CN220187131U - Efficient absorption heat pump system - Google Patents
Efficient absorption heat pump system Download PDFInfo
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- CN220187131U CN220187131U CN202221730157.6U CN202221730157U CN220187131U CN 220187131 U CN220187131 U CN 220187131U CN 202221730157 U CN202221730157 U CN 202221730157U CN 220187131 U CN220187131 U CN 220187131U
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- 239000003507 refrigerant Substances 0.000 claims abstract description 272
- 239000006096 absorbing agent Substances 0.000 claims abstract description 238
- 238000010438 heat treatment Methods 0.000 claims abstract description 216
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 8
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- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
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- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Treating Waste Gases (AREA)
Abstract
An efficient absorption heat pump system. The efficient absorption heat pump system comprises: evaporator, absorber, generator, condenser. In the process of heat absorption, evaporation and heat release and condensation by taking refrigerant water as a medium, the high-efficiency absorption heat pump system repeatedly uses a certain amount of heat energy, and has the advantages of low energy consumption, high energy utilization efficiency, low-temperature heat source heat absorption by the heat pump and high heating capacity.
Description
Technical Field
The utility model relates to a high-efficiency absorption heat pump system.
Background
The absorption heat pump is used as a circulating system for realizing heat transfer from low temperature to high temperature by utilizing high-grade energy source drive, so that the energy-saving potential is further excavated under the current 'double carbon' situation, and the carbon dioxide emission is reduced, thereby having important significance. When the conventional absorption heat pump at present has the problems of low working efficiency, poor adaptability and the like. When the temperature of the high-temperature driving heat source provided by a user is high, throttling, cooling and depressurization are often needed, so that energy loss is caused, and the efficiency of driving and separating the absorbent solution by the high-temperature driving heat source is reduced; when the temperature of the high-temperature driving heat source provided by a user is low, the regeneration of the absorbent solution is unstable, even the absorbent solution cannot be started, and the system cannot normally operate. Basically, the system runs in heating seasons, is idle in other seasons, and is used for three seasons in one season, so that huge investment waste and energy waste are caused.
Disclosure of Invention
In order to solve the problems, the utility model provides a high-efficiency absorption heat pump system. The efficient absorption heat pump system comprises an evaporator, an absorber, a condenser and a generator;
the evaporator comprises an evaporator tank body, and an evaporator heat transfer pipe is arranged in the tank body; the evaporator tank body is provided with an evaporator low-temperature heat source inlet, an evaporator low-temperature heat source outlet, an evaporator refrigerant water inlet and an evaporator refrigerant water vapor outlet; the low-temperature heat source inlet of the evaporator is directly or indirectly communicated with the low-temperature heat source outlet of the evaporator through an evaporator heat transfer pipe; the number of the evaporators is one or more;
the absorber comprises an absorber tank body, and an absorber heat transfer pipe is arranged in the absorber tank body; an absorber spraying device is arranged above the absorber heat transfer pipe in the absorber tank body; the absorber tank body is provided with an absorber cold water inlet, an absorber cold water outlet, an absorber refrigerant water vapor inlet, an absorber concentrated absorbent solution inlet and an absorber diluted absorbent solution outlet; the absorber concentrated absorbent solution inlet is directly or indirectly communicated with the absorber spraying device; the absorber cold water inlet is directly or indirectly communicated with the absorber cold water outlet through the absorber heat transfer pipe; the absorber is one or more;
The condenser comprises a condenser tank body, and a condenser heat transfer pipe is arranged in the condenser tank body; the condenser tank body is provided with a condenser cooling water inlet, a condenser cooling water outlet, a condenser refrigerant water vapor inlet and a condenser refrigerant water outlet; the condenser cooling water inlet is directly or indirectly communicated with the condenser cooling water outlet through the condenser heat transfer pipe; the number of the condensers is one or more;
the generator is provided with a generator high-temperature heat source inlet and a generator high-temperature heat source outlet;
the generator comprises a two-effect or multi-effect generator; wherein the 1 st effect sub-generator is used as the last effect sub-generator of the 2 nd effect sub-generator; similarly, the 2 nd effect generator is used as the last effect generator of the last 1 effect generator;
each effect generator comprises an effect generator tank body, and each effect generator tank body is internally provided with the effect generator heat transfer tube; each of the effect generator tank bodies is provided with the effect generator high-temperature heat source inlet, the effect generator high-temperature heat source outlet, the effect generator dilute absorbent solution inlet, the effect generator concentrated absorbent solution outlet and the effect generator refrigerant steam outlet; the high-temperature heat source inlet of each effect generator is directly or indirectly communicated with the high-temperature heat source outlet of the effect generator through the heat transfer pipe of the effect generator;
The high-temperature heat source inlet of the 1 st effect generator of the generator is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source inlets of other effect generators are directly or indirectly communicated with the refrigerant steam outlets of the last effect generator; the refrigerant steam outlet of the last effect sub-generator is directly or indirectly communicated with the refrigerant steam inlet of the condenser;
the high-temperature heat source outlet of the 1 st effect generator of the generator is directly or indirectly communicated with the high-temperature heat source outlet of the generator; the outlets of the high-temperature heat sources of the other effect generators are respectively and independently communicated with the refrigerant water inlet of the evaporator directly or indirectly; or, directly or indirectly communicate with the evaporator refrigerant water inlet through the condenser; or, the device is also provided with a cold water preheater, wherein the cold water preheater is provided with a cold water inlet of the cold water preheater, a cold water outlet of the cold water preheater, a cold water inlet of the cold water preheater and a cold water outlet of the cold water preheater, and other high-temperature heat source outlets of the various effect generators are respectively and independently communicated with the cold water inlet of the cold water preheater directly or indirectly; the cold water outlet of the cold water preheater is directly or indirectly communicated with the cold water inlet of the absorber;
Each effect generator is independently selected from an immersion heat exchange mode or a spray heat exchange mode; when any one of the effect generators adopts a spray type heat exchange mode, the effect generator spray device is also arranged in the effect generator tank body, and the dilute absorbent solution inlet of the effect generator is directly or indirectly communicated with the effect generator spray device;
the dilute absorbent solution inlet of any one of the generators is communicated with the concentrated absorbent solution outlet of the generator through the inside of the tank body of the generator and forms an absorbent channel of the generator; the absorber channels of each effect generator adopt a parallel connection mode, a serial connection mode or a serial-parallel connection mixing mode; in the parallel connection mode, the dilute absorbent solution inlet of each effect generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber, and the concentrated absorbent solution outlet of each effect generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber; in the series connection communication mode, the concentrated absorbent solution outlet of the uppermost sub-generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber, the concentrated absorbent solution outlet of each other sub-generator is directly or indirectly communicated with the dilute absorbent solution inlet of the last sub-generator, and the dilute absorbent solution inlet of the last sub-generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber;
The condenser refrigerant water outlet is in direct or indirect communication with the evaporator refrigerant water inlet; the evaporator refrigerant vapor outlet is in direct or indirect communication with the absorber refrigerant vapor inlet;
the absorber cold water outlet is directly or indirectly communicated with the condenser cooling water inlet;
preferably, in the efficient absorption heat pump system, the heat transfer tube comprises a round tube, a square tube and a rectangular tube; the rectangular tube comprises plate pairs of a plate heat exchanger;
preferably, the high-efficiency absorption heat pump system adopts lithium bromide solution or other solution with strong water absorption as absorbent solution; water or aqueous solution is used as refrigerant;
preferably, in the efficient absorption heat pump system, a vacuum air extractor is further provided for extracting non-condensable gases such as air in the unit, and keeping the system in a vacuum state;
optionally, an absorbent solution pump is connected in series with an absorbent solution channel directly or indirectly communicated with the absorber dilute absorbent solution outlet or the absorber concentrated absorbent solution inlet;
optionally, the evaporator tank body is also provided with an evaporator refrigerant water outlet, an evaporator refrigerant water circulation inlet or the evaporator refrigerant water inlet is used as the evaporator refrigerant water circulation inlet; an evaporator spraying device is arranged above the evaporator heat transfer pipe in the evaporator tank body; a refrigerant pump is also arranged; the evaporator refrigerant water outlet is directly or indirectly communicated with the evaporator refrigerant water circulation inlet through the refrigerant pump; the evaporator refrigerant water circulation inlet is directly or indirectly communicated with the evaporator spraying device;
Optionally, the level of the last effect sub-generator to the next effect sub-generator of the generator is sequentially increased;
optionally, a cold water reheater is connected in series with the condenser cooling water outlet; the cold water reheater is heated by hot water, steam or flue gas;
optionally, a first cold water reheater is also provided, the first cold water reheater being provided with a first cold water reheater inlet, and a first cold water reheater outlet; the first cold water reheater inlet is directly or indirectly communicated with the absorber cold water outlet; the outlet of the first cold water reheater is communicated with a hot user; optionally, the first cold water reheater is heated with hot water, steam or flue gas;
optionally, each effect sub-generator of the generator adopts an integrated structure, and adjacent sub-generators are separated by a partition plate.
Preferably, in the efficient absorption heat pump system, one or more downstream generators are further arranged; each downstream generator comprises a 1-effect or multi-effect generator;
herein, a first downstream generator of the generators is referred to as a first generator, a second downstream generator is referred to as a second generator, and so on. Except as otherwise limited, the 1 st effect sub-generator of the generator is referred to as the 1 st effect sub-generator, the 2 nd effect sub-generator of the generator is referred to as the 2 nd effect sub-generator, and so on; the 1 st sub-generator of the first generator is called a 1 st sub-first generator, the 2 nd sub-generator of the first generator is called a 2 nd sub-first generator, and so on; the 1 st sub-generator of the second generator is called a 1 st sub-second generator, the 2 nd sub-generator of the second generator is called a 2 nd sub-second generator, and so on; and the same applies to each downstream generator.
Each effect generator of each downstream generator comprises a tank body of the effect generator, and a heat transfer tube of the effect generator is arranged in the tank body of each effect generator of each downstream generator; each effect generator tank body of each downstream generator is provided with the high-temperature heat source inlet of the effect generator, the high-temperature heat source outlet of the effect generator, the dilute absorbent solution inlet of the effect generator, the concentrated absorbent solution outlet of the effect generator and the refrigerant steam outlet of the effect generator; the high-temperature heat source inlet of each effect generator of each downstream generator is directly or indirectly communicated with the high-temperature heat source outlet of the effect generator through the heat transfer pipe of the effect generator;
the 1 st effect sub generator high temperature heat source inlet is directly or indirectly communicated with the generator high temperature heat source inlet; the high-temperature heat source inlet of the 1 st effect sub first generator is directly or indirectly communicated with the high-temperature heat source outlet of the 1 st effect sub generator; similarly, the high-temperature heat source inlet of the 1 st effect sub-generator of each downstream generator is directly or indirectly communicated with the high-temperature heat source outlet of the 1 st effect sub-generator of the upstream generator of the downstream generator; the 1 st effect sub-generator of the most downstream generator is directly or indirectly communicated with the generator high temperature heat source outlet;
Except for the high-temperature heat source inlet of the 1 st effect sub-generator in each downstream generator, the high-temperature heat source inlet of each other effect sub-generator in each downstream generator is directly or indirectly communicated with the refrigerant water vapor outlet of the last effect sub-generator; the refrigerant vapor outlet of the last effect sub-generator in each downstream generator is directly or indirectly communicated with the refrigerant vapor inlet of the condenser;
except the 1 st effect generator high-temperature heat source outlet in each downstream generator, the other effect generator high-temperature heat source outlets in each downstream generator are respectively and independently communicated with the evaporator refrigerant water inlet directly or indirectly; or, directly or indirectly communicate with the evaporator refrigerant water inlet through the condenser; or is directly or indirectly communicated with the refrigerant water inlet of the cold water preheater; wherein the cold water preheater is provided with one or more than one;
each effect generator in each downstream generator is independently selected from an immersed heat exchange mode or a spray heat exchange mode; when any one of the effect generators adopts a spray type heat exchange mode, the effect generator spray device is also arranged in the effect generator tank body, and the dilute absorbent solution inlet of the effect generator is directly or indirectly communicated with the effect generator spray device;
The dilute absorbent solution inlet of any one of the downstream generators is communicated with the concentrated absorbent solution outlet of the generator through the inside of the tank body of the generator and forms an absorbent channel of the generator; the absorber channels of each effect generator in each downstream generator are connected in parallel, in series or in a series-parallel mixed mode; in the parallel connection mode, the dilute absorbent solution inlet of each effect generator in each downstream generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber, and the concentrated absorbent solution outlet of each effect generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber; in the series connection communication mode, the concentrated absorbent solution outlet of the uppermost sub-generator in each downstream generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber, the concentrated absorbent solution outlet of each other sub-generator is directly or indirectly communicated with the dilute absorbent solution inlet of the last sub-generator, and the dilute absorbent solution inlet of the last sub-generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber;
optionally, a heat exchange device is further provided, wherein the heat exchange device is provided with a cold absorbent channel and a hot absorbent channel, and the cold absorbent channel is connected in series with the absorbent channel of the dilute absorbent solution of the absorber flowing to each generator; the heat absorber channels are connected in series with the concentrated absorbent solution of each generator flowing to the absorber channels of the absorber;
Optionally, the heat transfer tube comprises a round tube, a square tube, and a rectangular tube; the rectangular tube comprises plate pairs of a plate heat exchanger;
optionally, the level of the last effect sub-generator to the next effect sub-generator in each downstream generator is sequentially increased;
optionally, each effect sub-generator in each downstream generator adopts an integrated structure, and adjacent sub-generators are separated by a partition plate.
Preferably, in the efficient absorption heat pump system, one or more downstream generator high-temperature heat source inlets are further arranged; any one of the downstream generator high temperature heat source inlets is directly or indirectly communicated with the 1 st effect sub generator high temperature heat source inlet of the downstream generator.
Preferably, the efficient absorption heat pump system further comprises: the boiler comprises a boiler, a bypass economizer, an air preheater, a flue heat exchanger, a desulfurizing tower, a spray tower, a chimney, a blower and a blast heater; wherein,
the boiler is provided with a fuel inlet, a boiler air supply inlet and a boiler flue gas outlet;
the bypass economizer is provided with a bypass economizer flue gas inlet, a bypass economizer flue gas outlet, a bypass economizer working medium water inlet and a bypass economizer working medium water outlet;
The air preheater is provided with an air preheater flue gas inlet, an air preheater flue gas outlet, an air preheater air supply inlet and an air preheater air supply outlet;
the flue heat exchanger is provided with a flue heat exchanger smoke inlet, a flue heat exchanger smoke outlet, a flue heat exchanger working medium water inlet and a flue heat exchanger working medium water outlet; optionally, the flue heat exchanger is a dividing wall heat exchanger;
the desulfurizing tower includes: a desulfurizing tower body and a slurry circulating pump; a slurry pond is arranged at the bottom of the desulfurizing tower body; the lower part of the desulfurizing tower body is provided with a desulfurizing tower flue gas inlet, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet; a desulfurizing tower spraying device is arranged between the desulfurizing tower flue gas inlet and the desulfurizing tower flue gas outlet, the desulfurizing tower spraying device is directly or indirectly communicated with the slurry circulating pump, and the slurry circulating pump is directly or indirectly communicated with the slurry pool; optionally, a desulfurizing tower demister is arranged between the desulfurizing tower spraying device and the desulfurizing tower flue gas outlet;
the spray tower is provided with a spray tower flue gas inlet, a spray tower flue gas outlet, a spray tower heat medium water inlet and a spray tower heat medium water outlet; a spray tower water receiving device is arranged at the bottom of the spray tower; a spray tower water distribution device for heating medium water is arranged between the spray tower flue gas inlet and the spray tower flue gas outlet; the spray tower water distribution device is directly or indirectly communicated with the spray tower heat medium water inlet, and the spray tower water receiving device is directly or indirectly communicated with the spray tower heat medium water outlet; optionally, the spray tower water distribution device is a water distribution tank or a water distribution pipe or a spray device;
The blower is provided with a blower inlet and a blower outlet;
the air supply heater is provided with an air supply inlet of the air supply heater, an air supply outlet of the air supply heater, a working medium water inlet of the air supply heater and a working medium water outlet of the air supply heater;
the boiler flue gas outlet is directly or indirectly communicated with the air preheater flue gas inlet and the bypass economizer flue gas inlet at the same time; the flue gas outlet of the air preheater and the flue gas outlet of the bypass economizer are directly or indirectly communicated with the flue gas inlet of the flue heat exchanger; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the flue gas outlet of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet of the spray tower; the flue gas outlet of the spray tower is directly or indirectly communicated with the chimney;
the air supply inlet of the air blower is directly or indirectly communicated with the atmosphere; the air supply outlet of the air supply blower is directly or indirectly communicated with the air supply inlet of the air supply heater; the air supply outlet of the air supply heater is directly or indirectly communicated with the air supply inlet of the air preheater; the air preheater air supply outlet is directly or indirectly communicated with the boiler air supply inlet;
The working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; the flue heat exchanger working medium water outlet is directly or indirectly communicated with the working medium water inlet of the air supply heater;
the spray tower heating medium water outlet is directly or indirectly communicated with the evaporator low-temperature heat source inlet; the low-temperature heat source outlet of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet;
the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; or the bypass economizer working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the downstream generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the downstream generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet.
Or the bypass economizer comprises a first-stage bypass heat exchange module and a second-stage bypass heat exchange module which are connected in series front and back; the first-stage bypass heat exchange module is provided with a bypass economizer flue gas inlet, a first-stage bypass heat exchange module flue gas outlet, a first-stage bypass heat exchange module working medium water inlet and a bypass economizer working medium water outlet; the second-stage bypass heat exchange module is provided with a second-stage bypass heat exchange module smoke inlet, a bypass economizer smoke outlet, a bypass economizer working medium water inlet and a second-stage bypass heat exchange module working medium water outlet; the flue gas outlet of the first-stage bypass heat exchange module is directly or indirectly communicated with the flue gas inlet of the second-stage bypass heat exchange module; the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module and the generator high-temperature heat source inlet at the same time, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the bypass economizer; or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module and the working medium water inlet of the downstream generator, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the bypass economizer.
Optionally, the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module through a bypass header or/and a first bypass deaerator or/and a first bypass water supply pump;
optionally, the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the bypass economizer through a cooler; optionally, the cooler is a generator of other absorption heat pumps or other air supply heaters;
optionally, a spray tower demister is arranged on a flue gas channel between the spray tower water distribution device and the chimney;
optionally, a heat medium water circulating pump is arranged on a heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet or the spray tower heat medium water inlet;
optionally, a high-temperature heat source water pump is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet or the generator high-temperature heat source outlet;
optionally, a cold water pump is connected in series on a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet;
optionally, a dust remover or/and a draught fan are connected in series at the flue gas inlet of the flue heat exchanger or the flue gas outlet of the flue heat exchanger;
Optionally, the flue heat exchanger comprises a first stage flue heat exchange module and a second stage flue heat exchange module which are connected in series; the first-stage flue heat exchange module is provided with a flue heat exchanger flue gas inlet, a first-stage flue heat exchange module flue gas outlet, a first-stage flue heat exchange module working medium water inlet and a flue heat exchanger working medium water outlet; the second-stage flue heat exchange module is provided with a second-stage flue heat exchange module flue gas inlet, a flue heat exchanger flue gas outlet, a flue heat exchanger working medium water inlet and a second-stage flue heat exchange module working medium water outlet; the flue gas outlet of the first-stage flue heat exchange module is directly or indirectly communicated with the flue gas inlet of the second-stage flue heat exchange module through a dust remover and/or an induced draft fan, and the working medium water outlet of the second-stage flue heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage flue heat exchange module;
optionally, the bypass economizer working medium water outlet is also communicated with a heat user;
optionally, the flue heat exchanger is a tubular heat exchanger or a heat pipe heat exchanger;
optionally, the flue heat exchanger is a series connection of a heat pipe heat exchanger and a tubular heat exchanger;
optionally, a first desulfurizing tower is connected in series on the flue directly or indirectly communicated with the desulfurizing tower flue gas outlet or the desulfurizing tower flue gas outlet;
Optionally, the bypass economizer has two or more heat exchange modules and their series/parallel switching structures;
optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger or the working medium water outlet of the flue heat exchanger;
optionally, a bypass feed water pump or/and a bypass deaerator or/and a buffer water tank are arranged on a working medium water channel directly or indirectly communicated with the working medium water inlet of the bypass economizer.
Preferably, in the high-efficiency absorption heat pump system, the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; a fourth switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the flue heat exchanger;
Or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; a fifth switching valve is arranged on a branch line from the high-temperature heat source outlet of the generator to the working medium water inlet of the air supply heater, and a sixth switching valve is arranged on a branch line from the working medium water outlet of the flue heat exchanger to the working medium water inlet of the air supply heater;
Or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the working medium water inlet of the downstream generator, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the downstream generator; a fourth switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the flue heat exchanger;
or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the downstream generator high-temperature heat source channel is connected in series with a working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the downstream generator; and a fifth switching valve is arranged on a branch line from the high-temperature heat source outlet of the generator to the working medium water inlet of the air supply heater, and a sixth switching valve is arranged on a branch line from the working medium water outlet of the flue heat exchanger to the working medium water inlet of the air supply heater.
Preferably, in the efficient absorption heat pump system, the absorber cold water outlet or the condenser cooling water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; and the working medium water outlet of the flue heat exchanger is also directly or indirectly communicated with a heat user.
Preferably, in the efficient absorption heat pump system, a first flue heat exchanger is further arranged; the first flue heat exchanger is provided with a first flue heat exchanger smoke inlet, a first flue heat exchanger smoke outlet, a first flue heat exchanger working medium water inlet and a first flue heat exchanger working medium water outlet; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the first flue heat exchanger; the flue gas outlet of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the first flue heat exchanger is a dividing wall type heat exchanger; the absorber cold water outlet or the condenser cooling water outlet is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger.
Preferably, in the efficient absorption heat pump system, a first air supply heater is further provided; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
Preferably, in the efficient absorption heat pump system, a second air supply heater is further arranged; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; preferably, when the first air supply heater is provided, the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
Preferably, in the efficient absorption heat pump system, a steam turbine, a condenser, a condensate pump, a first low-pressure heater, a deaerator, a water supply pump and a high-pressure heater are further arranged;
the steam turbine is provided with a steam turbine steam inlet, a steam turbine steam outlet, a steam turbine high-pressure steam extraction outlet and a steam turbine low-pressure steam extraction outlet;
the condenser is provided with a condenser steam inlet and a condenser working medium water outlet;
the condensate pump is provided with a condensate pump inlet and a condensate pump outlet;
the first low-pressure heater is provided with a first low-pressure heater working medium water inlet and a first low-pressure heater working medium water outlet;
the low-pressure heater is provided with a low-pressure heater working medium water inlet, a low-pressure heater working medium water outlet and a low-pressure heater steam extraction inlet;
the deaerator is provided with a deaerator working medium water inlet and a deaerator working medium water outlet;
the water feed pump is provided with a water feed pump inlet and a water feed pump outlet;
the high-pressure heater is provided with a high-pressure heater working medium water inlet, a high-pressure heater working medium water outlet and a high-pressure heater steam extraction inlet;
the boiler is also provided with a boiler working medium water inlet and a boiler steam outlet;
The boiler steam outlet is directly or indirectly communicated with the steam inlet of the steam turbine; the steam outlet of the steam turbine is directly or indirectly communicated with the steam inlet of the condenser; the condenser working medium water outlet is directly or indirectly communicated with the condensate pump inlet; the outlet of the condensate pump is directly or indirectly communicated with the working medium water inlet of the first low-pressure heater; the first low-pressure heater working medium water outlet is directly or indirectly communicated with the low-pressure heater working medium water inlet; the low-pressure heater working medium water outlet is directly or indirectly communicated with the deaerator working medium water inlet; the working medium water outlet of the deaerator is directly or indirectly communicated with the inlet of the water feeding pump; the water feed pump outlet is directly or indirectly communicated with the working medium water inlet of the high-pressure heater; the high-pressure heater working medium water outlet is directly or indirectly communicated with the boiler working medium water inlet; the low-pressure heater steam extraction inlet is directly or indirectly communicated with the steam turbine low-pressure steam extraction outlet; the high-pressure heater steam extraction inlet is directly or indirectly communicated with the steam turbine high-pressure steam extraction outlet; the bypass economizer working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the water supply pump outlet; the bypass economizer working medium water outlet is directly or indirectly communicated with the boiler working medium water inlet;
The low-pressure heater is one-stage or multi-stage low-pressure heater; the high-pressure heater is a one-stage or multi-stage high-pressure heater; the first low-pressure heater is a one-stage or multi-stage low-pressure heater; the high-pressure steam extraction outlet of the steam turbine is one-stage or multi-stage; the low-pressure steam extraction outlet of the steam turbine is one-stage or multi-stage;
optionally, the bypass economizer working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the feed pump outlet through the flue heat exchanger; the bypass economizer working medium water inlet is directly or indirectly communicated with the flue heat exchanger working medium water outlet; the flue heat exchanger working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the water supply pump outlet.
Preferably, in the efficient absorption heat pump system, the spray tower is arranged above the desulfurizing tower, the desulfurizing tower and the spray tower are connected through a liquid collecting device to form a desulfurizing and spraying integrated structure, and the slurry pool, the desulfurizing tower flue gas inlet, the desulfurizing tower spray device, the liquid collecting device, the spray tower water distributing device and the spray tower flue gas outlet are sequentially arranged inside the desulfurizing and spraying integrated structure from bottom to top; the liquid collecting device is of a multifunctional integrated structure and comprises a flue gas outlet of the desulfurizing tower, a flue gas inlet of the spraying tower and a water receiving device of the spraying tower, flue gas from the desulfurizing tower can enter the spraying tower through the liquid collecting device, and heat medium water from the spraying tower falls into the liquid collecting device to be collected and is guided out of the liquid collecting device through a heat medium water outlet of the spraying tower so as not to flow into the desulfurizing tower.
Preferably, in the efficient absorption heat pump system, the liquid collecting device is a liquid collecting and demisting integrated structure with a demisting function, and the liquid collecting and demisting integrated structure comprises a liquid collecting chassis, a gas lifting pipe and a gas lifting cap; the liquid collecting chassis is provided with a plurality of vent holes, the vent holes are correspondingly provided with the gas lifting pipes, the top ends of the gas lifting pipes are provided with gas lifting caps, and gas lifting channels for the circulation of flue gas are arranged on the gas lifting caps or between the gas lifting caps and the top ends of the gas lifting pipes or on the pipe walls of the upper sections of the gas lifting pipes; a guide vane or a cyclone is arranged in the gas lift pipe, or/and a demisting pipe is connected below the gas lift pipe or arranged in the gas lift pipe, and the guide vane or the cyclone is arranged in the demisting pipe; the gas lifting pipe and the demisting pipe are of a split structure or an integrated structure; the liquid collecting chassis is provided with a water retaining edge or is in sealing connection with the inner wall of the tower body of the desulfurization spraying integrated structure, the inner wall of the desulfurization spraying integrated structure is used as the water retaining edge, an upward opening space enclosed between the liquid collecting chassis and the water retaining edge is used as a spray tower water receiving device, and the spray tower water receiving device is directly or indirectly communicated with a spray tower heating medium water outlet; optionally, the lift cap adopts a tower-type shutter structure, the outer diameter of the lift cap and the outer diameter of the lift pipe are smaller than or equal to the inner diameter of the vent hole on the liquid collecting chassis, and the lift pipe and the lift cap are installed in a mode of being detachable from the liquid collecting chassis.
Preferably, in the efficient absorption heat pump system, a filler layer is arranged between the liquid collecting device and the spray tower water distribution device.
Preferably, in the efficient absorption heat pump system, a bypass flue gas control baffle is arranged on a flue gas diversion branch of a flue gas inlet of the bypass economizer or a flue gas outlet of the bypass economizer, and is used for adjusting the flue gas flow entering a flue gas channel of the bypass economizer.
The blower herein refers to various blowers that supply oxygen required for combustion to the air supply in the boiler, such as blowers and/or primary blowers in a power plant; the boiler refers to a device that burns fuel to emit heat and generates flue gas.
The steam turbine is generally used for driving a generator to generate electricity, and has the advantages of improving the working efficiency, improving the working capacity and reducing the energy consumption, namely reducing the electricity generation coal consumption and the power supply coal consumption.
The water distribution device of the spray tower is a water distribution tank, a water distribution pipe, a spray device or the like, and only needs to be capable of distributing the heat medium water into the flue gas. The spray tower water receiving device can be a tower pool positioned at the lower part of the spray tower or other structural forms, so long as the heat medium water flowing out from the water distribution device can be collected.
The absorption heat pump is a circulating system which is driven by high-grade energy to realize heat transfer from low temperature to high temperature. The heat energy is used for driving operation, other solutions with strong water absorbability such as lithium bromide solution or ammonia water and the like can be used as absorbents, water or aqueous solution is used as a refrigerant, heat is extracted from a low-grade heat source, medium-temperature and high-temperature hot water or steam meeting the requirements of processes or heating is prepared, waste heat recycling is realized, and heat energy is conveyed from low temperature to high temperature.
The absorption heat pump optionally further comprises heat exchanger suction devices, canned pumps (solution pump and refrigerant pump), etc. The air extractor extracts noncondensable gases such as air in the unit and keeps the unit in a high vacuum state all the time. The specific structure of other conventional components related to the absorption heat pump belongs to the conventional technology, and is not described herein.
The dividing wall type heat exchanger is also called a surface type heat exchanger, and refers to a heat exchanger that cold side medium and hot side medium are not in direct contact, but indirectly exchange heat through wall surfaces such as heat exchange tube walls or heat exchange plate walls, such as a tube type heat exchanger, a plate type heat exchanger, a heat tube type heat exchanger, a tube type heat tube hybrid type heat exchanger and the like, wherein the heat exchange process of the heat tube type heat exchanger is that the hot side medium transfers heat to an intermediate medium in a heat tube through a heat tube hot section tube wall, and the intermediate medium transfers heat to the cold side medium through a heat tube cold section tube wall.
The heat transfer tube described herein includes round tube, square tube, rectangular tube. Wherein the rectangular tubes comprise plate pairs of the plate heat exchanger.
Any of the generators herein may employ a spray heat exchange or an immersion heat exchange. The spraying type heat exchange mode is that the dilute absorbent solution from the dilute absorbent solution inlet of the effect generator is sprayed and sprinkled on the heat transfer pipe of the effect generator through a spraying device, and the heat transfer pipe of the effect generator mainly transfers heat to the dilute absorbent solution in a convection mode, so that the heat exchange efficiency is higher; any of the generators can also adopt an immersion heat exchange mode: the dilute absorbent solution from the dilute absorbent solution inlet of the effect generator is accumulated at the bottom of the tank body of the effect generator to form a proper depth, the effect generator heat transfer tube is immersed in the absorbent solution, and the effect generator heat transfer tube mainly transfers heat to the absorbent solution in a conduction mode.
Communication as described herein, including direct communication and indirect communication;
herein, optionally, means that it may be selected, e.g., with or without, being provided, in some way or not.
The sequential arrangement, sequential communication, etc. of the various devices or components described herein are related to sequential expressions and do not exclude the case where other devices or components are disposed between two devices or components that are sequentially adjacent.
In the process of absorbing heat, evaporating, releasing heat and condensing by taking refrigerant water as a medium, the high-efficiency absorption heat pump system repeatedly uses a certain amount of heat energy, and has the advantages of low energy consumption, high energy utilization efficiency, low-temperature heat source heat absorption by the heat pump and high heating capacity.
Description of the drawings:
FIG. 1 is a schematic diagram of one embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 1-1 is a schematic diagram of a junction structure of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIGS. 1-2 are schematic junction structure diagrams of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIGS. 1-3 are schematic structural views of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIGS. 1-4 are schematic structural views of another embodiment of an evaporator in a high efficiency absorption heat pump system of the present utility model;
FIGS. 1-5 are schematic junction structure views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIGS. 1-6 are schematic junction structure diagrams of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 2-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
fig. 2-2 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIGS. 2-3 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIG. 3 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 4 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 4-1 is a schematic view of another connection of the flue heat exchanger 22 in the high efficiency absorption heat pump system of the present utility model;
FIG. 4-2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIGS. 4-3 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIGS. 4-4 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIG. 5 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 5-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 6 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 6-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 6-2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 7 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 7-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 8 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 8-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 9 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 9-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 10 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 10-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 11 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 12 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 12-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 12-2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIGS. 12-3, 12-4, 12-5, 12-6, 12-7 are schematic structural views of further embodiments of the high efficiency absorption heat pump system of the present utility model;
FIGS. 12-8 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIGS. 12-9 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model;
FIG. 13 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model;
FIG. 14 is a schematic diagram of one embodiment of a desulfurizing tower, spray tower in some embodiments of the high efficiency absorption heat pump system of the present utility model;
Fig. 15 is a schematic structural view of an embodiment of a liquid collecting device in the high-efficiency absorption heat pump system of the present utility model.
FIGS. 15a and 15b are schematic structural views of an embodiment of a guide vane;
FIG. 15-1 is a schematic view of another embodiment of a liquid collection device;
FIG. 15-2 is a schematic view of another embodiment of a liquid collection device;
fig. 15-3 are schematic structural views of another embodiment of a liquid collection device in a high efficiency absorption heat pump system of the present utility model;
15-4 are schematic structural views of one embodiment of an air lift cap of a liquid collection device;
FIG. 16 is a schematic diagram of another embodiment of a desulfurizing tower, a spray tower in a high efficiency absorption heat pump system of the present utility model;
reference numerals illustrate:
21. a boiler;
21-1 boiler fuel inlet;
21-2 boiler air supply inlet;
21-3 boiler flue gas outlet;
21-4 boiler steam outlet;
21-5 boiler working medium water inlet;
52. an air preheater;
52-1 air preheater flue gas inlet;
52-2 air preheater flue gas outlet;
52-3 air preheater supply air inlet;
52-4 air preheater air supply outlets;
15 by-pass economizer;
15-1 by-pass economizer flue gas inlet;
15-2 by-pass economizer flue gas outlet;
15-3 bypass economizer working medium water inlet;
15-4 bypass economizer working medium water outlet;
15a first stage bypass heat exchange module;
15a-2 a flue gas outlet of the first-stage bypass heat exchange module;
15a-3 working medium water inlet of the first-stage bypass heat exchange module;
15b second stage bypass heat exchange module;
15b-1 a flue gas inlet of a second-stage bypass heat exchange module;
15-8 by-pass flue gas control baffles;
30C a first bypass deaerator;
32C a first bypass feed pump;
22 flue heat exchanger;
a flue gas inlet of a 22-1 flue heat exchanger;
a flue gas outlet of the 22-2 flue heat exchanger;
22-3 flue heat exchanger working medium water inlet;
22-4 flue heat exchanger working medium water outlet;
22a first stage flue heat exchange module;
22a-2 a flue gas outlet of the first-stage flue heat exchange module;
22a-3 working medium water inlet of the first-stage flue heat exchange module;
22b a second stage flue heat exchange module;
22b-1 a flue gas inlet of a second stage flue heat exchange module;
22b-4 working medium water outlet of the second-stage flue heat exchange module;
6 a desulfurizing tower;
6-1 of a desulfurizing tower body;
6-2 slurry circulation pump;
6-3 slurry tanks;
6-4 flue gas outlets of the desulfurizing tower;
6-5 flue gas inlets of the desulfurizing tower;
6-6, a desulfurizing tower spraying device;
7, a chimney;
8, an air blower;
8-1 blower inlet;
8-2 and an air supply outlet of the blower;
9, an air supply heater;
9-1 air supply inlet of air supply heater;
9-2 an air supply outlet of an air supply heater;
9-3 a hot medium water inlet of an air supply heater;
9-4 a hot medium water outlet of the air supply heater;
12 a spray tower;
12-1 a flue gas inlet of a spray tower;
12-2 a flue gas outlet of the spray tower;
12-3 a spray tower heating medium water inlet;
12-4 a spray tower heating medium water outlet;
12-5 a spray tower water receiving device;
12-6 spraying tower water distribution device;
12-7 liquid collecting devices;
12-8 of a liquid collecting chassis;
12-9 liters of air pipes;
12-10 liters of air cap;
12-11 vent holes;
12-12 swirlers;
12-13 liter gas channels;
12-14 water blocking edges;
12-15 demisting pipes;
12-16 filler layers;
25 steam turbines;
25-1 steam inlet of steam turbine;
25-2 steam turbine steam outlets;
25-5 high-pressure steam extraction outlet of steam turbine;
25-4 and a low-pressure steam extraction outlet of the steam turbine;
27, a condenser;
27-1 condenser steam inlet;
27-2 and a condenser working medium water outlet;
26, a condensate pump;
26-1 condensate pump inlet;
26-2 condensate pump outlet;
29 low pressure heater;
29-1 working medium water inlet of low-pressure heater;
29-2 working medium water outlet of low-pressure heater;
29-3 a low pressure heater extraction inlet;
a 30 deaerator;
30-1 working medium water inlet of deaerator;
30-2 working medium water outlet of deaerator;
32 a water feed pump;
32-1 feed pump inlet;
32-2 a feed pump outlet;
31 high pressure heater;
31-1 working medium water inlet of high-pressure heater;
31-2 working medium water outlet of high-pressure heater;
31-3 a high pressure heater steam extraction inlet;
28 a first low pressure heater;
28-1 a first low pressure heater working fluid water inlet;
28-2 a first low pressure heater working fluid water outlet;
36 raw water users;
35 raw water source device;
60 dust collectors;
61, induced draft fan;
1 an evaporator;
1-0 evaporator tank;
1-1 low temperature heat source inlet of evaporator;
1-2 low temperature heat source outlet of evaporator;
1-3 evaporator refrigerant water inlet;
1-4 evaporator refrigerant vapor outlet;
1-6 evaporator heat transfer tubes;
1-7 evaporator spraying devices;
1-8 refrigerant pumps;
1-9 evaporator refrigerant water outlet;
1-10 evaporator refrigerant water circulation inlets;
2 an absorber;
2-0 absorber tank;
2-1 absorber cold water inlet;
2-2 absorber cold water outlet;
2-3 absorber refrigerant vapor inlet;
2-4 absorber concentrated absorbent solution inlet;
2-5 absorber lean absorbent solution outlet;
2-6 absorber heat transfer tubes;
2-7 absorber spray devices;
3 a generator;
3-11 generator high temperature heat source inlet;
3-12 high temperature heat source outlets of the generator;
3-11-1 a first generator high temperature heat source inlet;
3-1 st effect generator;
3-0-1 st effect generator tank;
3-1-1 st effect generator high temperature heat source inlet;
3-2-1 st effect generator high temperature heat source outlet;
3-3-1. Sup. St generator dilute absorbent solution inlet;
3-4-1 st effect generator concentrated absorbent solution outlet;
3-5-1 st effect generator refrigerant vapor outlet;
3-6-1 st effect sub-generator heat transfer tube;
3-7-1 st effect generator spray device;
3-2 nd effect generator;
3-0-2 nd effect generator tank;
3-1-2 the high temperature heat source inlet of the 2 nd effect generator;
3-2-2 nd effect generator high temperature heat source outlet;
3-3-2 th effect generator dilute absorbent solution inlet;
3-4-2 nd effect generator concentrated absorbent solution outlet;
3-5-2 nd effect generator refrigerant water vapor outlet;
3-6-2 nd effect sub-generator heat transfer pipe;
3-7-2 nd effect generator spray device;
3-3 rd effect generator;
3-0-3 rd generator tank;
3-1-3 rd efficient sub-generator high temperature heat source inlet;
3-2-3 rd effect generator high temperature heat source outlet;
3-3-3 the 3 rd generator dilute absorbent solution inlet;
3-4-3 the 3 rd generator concentrated absorbent solution outlet;
3-5-3 rd effect generator refrigerant vapor outlet;
3-6-3 rd effect sub-generator heat transfer tube;
3-7-3 rd effect generator spray device;
3-11-1 a first generator high temperature heat source inlet;
31 a first generator;
31-1 first sub-generator of 1 st effect;
3-0-1-1 the 1 st effect first sub-generator tank;
3-1-1-1 the 1 st effect first sub-generator high temperature heat source inlet;
3-2-1-1 st effect first sub-generator high temperature heat source outlet;
3-3-1-1 a 1 st effect first sub-generator dilute absorbent solution inlet;
3-4-1-1 st effect first sub-generator concentrated absorbent solution outlet;
3-5-1-1 st effect first sub-generator refrigerant vapor outlet;
3-6-1-1 st effect first sub-generator heat transfer tube;
3-7-1-1 the 1 st effect first sub-generator spray device;
31-2 nd effect first sub-generator;
3-0-2-1 the 2 nd effect first sub-generator tank;
3-1-2-1 the high temperature heat source inlet of the first sub-generator of the 2 nd effect;
3-2-2-1 the high temperature heat source outlet of the first sub-generator with the 2 nd effect;
3-3-2-1 a 2 nd effect first sub-generator dilute absorbent solution inlet;
3-4-2-1 a 2 nd effect first sub-generator concentrated absorbent solution outlet;
3-5-2-1 2 nd effect first generator refrigerant steam outlet;
3-6-2-1 a 2 nd effect first sub-generator heat transfer tube;
3-7-2-1 the 2 nd effect first sub-generator spray device;
a second generator 32;
32-1 first-effect second sub-generator;
3-0-1-2 the 1 st effect second sub-generator tank;
3-1-1-2 the 1 st effect second sub-generator high temperature heat source inlet;
3-2-1-2 the 1 st effect second sub-generator high temperature heat source outlet;
3-3-1-2 first effect second sub-generator dilute absorbent solution inlet;
3-4-1-2 first effect second sub-generator concentrated absorbent solution outlet;
3-5-1-2 the 1 st effect second sub-generator refrigerant vapor outlet;
3-6-1-2 first effect second sub-generator heat transfer tube;
3-7-1-2 the 1 st effect second sub-generator spray device;
4 a condenser;
4-1 condenser cooling water inlet;
4-2 condenser cooling water outlet
4-3 condenser refrigerant vapor inlet;
4-4 condenser refrigerant water outlet;
4-6 condenser heat transfer tubes;
16 cold water reheater;
7, a first cold water reheater;
7-1 a first cold water reheater inlet;
7-2 a first cold water reheater outlet;
41 cold water preheater
41-1 cold water inlet of cold water preheater;
41-2 cold water outlets of the cold water preheater;
41-3 a cold water preheater refrigerant water inlet;
41-4 refrigerant water outlet of cold water preheater;
10 heat exchange means;
2-8 absorbent solution pumps;
80 a first supply air heater;
80-1 a first supply air heater supply air inlet;
80-2 a first supply air heater supply air outlet;
80-3 a first air supply heater heating medium water inlet;
80-4 a first air supply heater heating medium water outlet;
a second supply air heater 100;
100-1 a second supply air heater supply air inlet;
100-2 a second air supply heater air supply outlet;
100-3 a second supply air heater cold water inlet;
100-4 a cold water outlet of a second air supply heater;
15-14 first switching valve;
15-13 second switching valve;
22-14 third switching valve;
22-13 fourth switching valve;
9-13 fifth switching valve;
9-10 sixth switching valve.
Detailed Description
Hereinafter, specific embodiments of the present utility model will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the structure of an embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 1, the high-efficiency absorption heat pump system of the present utility model includes an evaporator 1, an absorber 2, a generator 3, and a condenser 4;
the evaporator 1 comprises an evaporator tank body 1-0, and an evaporator heat transfer tube 1-6 is arranged in the evaporator tank body 1-0; the evaporator tank body 1-0 is provided with an evaporator low-temperature heat source inlet 1-1, an evaporator low-temperature heat source outlet 1-2, an evaporator refrigerant water inlet 1-3 and an evaporator refrigerant water vapor outlet 1-4; the low-temperature heat source inlet 1-1 of the evaporator is directly or indirectly communicated with the low-temperature heat source outlet 1-2 of the evaporator through the evaporator heat transfer pipe 1-6; one or more evaporators 1 (1 in this embodiment);
The absorber 2 comprises an absorber tank body 2-0, and an absorber heat transfer pipe 2-6 is arranged in the absorber tank body 2-0; an absorber spraying device 2-7 is arranged above the absorber heat transfer pipe 2-6 in the absorber tank body 2-0; the absorber tank body 2-0 is provided with an absorber cold water inlet 2-1, an absorber cold water outlet 2-2, an absorber refrigerant water vapor inlet 2-3, an absorber concentrated absorbent solution inlet 2-4 and an absorber dilute absorbent solution outlet 2-5; the absorber concentrated absorbent solution inlet 2-4 is directly or indirectly communicated with the absorber spraying device 2-7; the absorber cold water inlet 2-1 is directly or indirectly communicated with the absorber cold water outlet 2-2 through the absorber heat transfer pipe 2-6; one or more (1 in this embodiment) absorbers 2;
the condenser 4 comprises a condenser tank body 4-0, and a condenser heat transfer tube 4-6 is arranged in the condenser tank body 4-0; the condenser tank body 4-0 is provided with a condenser cooling water inlet 4-1, a condenser cooling water outlet 4-2, a condenser refrigerant water vapor inlet 4-3 and a condenser refrigerant water outlet 4-4; the condenser cooling water inlet 4-1 is directly or indirectly communicated with the condenser cooling water outlet 4-2 through the condenser heat transfer pipe 4-6; one or more (1 in this embodiment) condensers 4;
The generator 3 is provided with a 1 st effect sub-generator 3-1, a 2 nd effect sub-generator 3-2, a 3 rd effect sub-generator 3-3, a generator high temperature heat source inlet 3-11 and a generator high temperature heat source outlet 3-12;
the 1 st effect sub generator 3-1 comprises a 1 st effect sub generator tank body 3-0-1, wherein a 1 st effect sub generator heat transfer tube 3-6-1 and a 1 st effect sub generator spray device 3-7-1 are arranged in the 1 st effect sub generator tank body 3-0-1; the 1 st effect sub generator tank body 3-0-1 is provided with a 1 st effect sub generator high temperature heat source inlet 3-1-1, a 1 st effect sub generator high temperature heat source outlet 3-2-1, a 1 st effect sub generator dilute absorbent solution inlet 3-3-1, a 1 st effect sub generator concentrated absorbent solution outlet 3-4-1 and a 1 st effect sub generator refrigerant water vapor outlet 3-5-1; the high-temperature heat source inlet 3-1-1 of the 1 st effect sub-generator is directly or indirectly communicated with the high-temperature heat source outlet 3-2-1 of the 1 st effect sub-generator through the heat transfer tube 3-6-1 of the 1 st effect sub-generator; the dilute absorbent solution inlet 3-3-1 of the 1 st effect generator is directly or indirectly communicated with the spraying device 3-7-1 of the 1 st effect generator;
the 2 nd effect sub-generator 3-2 comprises a 2 nd effect sub-generator tank body 3-0-2, and a sub-2 nd effect sub-generator heat transfer pipe 3-6-2 and a 2 nd effect sub-generator spray device 3-7-2 are arranged in the 2 nd effect sub-generator tank body 3-0-2; the 2 nd effect sub generator tank body 3-0-2 is provided with a 2 nd effect sub generator high temperature heat source inlet 3-1-2, a 2 nd effect sub generator high temperature heat source outlet 3-2-2, a 2 nd effect sub generator dilute absorbent solution inlet 3-3-2, a 2 nd effect sub generator concentrated absorbent solution outlet 3-4-2 and a 2 nd effect sub generator refrigerant water vapor outlet 3-5-2; the high-temperature heat source inlet 3-1-2 of the 2 nd effect sub-generator is directly or indirectly communicated with the high-temperature heat source outlet 3-2-2 of the 2 nd effect sub-generator through the heat transfer tube 3-6-2 of the 2 nd effect sub-generator; the dilute absorbent solution inlet 3-3-2 of the 2 nd effect generator is directly or indirectly communicated with the spraying device 3-7-2 of the 2 nd effect generator;
The 3 rd effect sub generator 3-3 comprises a 3 rd effect sub generator tank body 3-0-3, wherein a 3 rd effect sub generator heat transfer pipe 3-6-3 and a 3 rd effect sub generator spray device 3-7-3 are arranged in the 3 rd effect sub generator tank body 3-0-3; the 3 rd effect sub generator tank body 3-0-3 is provided with a 3 rd effect sub generator high temperature heat source inlet 3-1-3, a 3 rd effect sub generator high temperature heat source outlet 3-2-3, a 3 rd effect sub generator dilute absorbent solution inlet 3-3-3, a 3 rd effect sub generator concentrated absorbent solution outlet 3-4-3 and a 3 rd effect sub generator refrigerant water vapor outlet 3-5-3; the high-temperature heat source inlet 3-1-3 of the 3 rd effect sub-generator is directly or indirectly communicated with the high-temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator through the heat transfer pipe 3-6-3 of the 3 rd effect sub-generator; the dilute absorbent solution inlet 3-3-3 of the 3 rd effect generator is directly or indirectly communicated with the spray device 3-7-3 of the 3 rd effect generator.
The generator high-temperature heat source inlet 3-11 is directly or indirectly communicated with the 1 st effect generator high-temperature heat source inlet 3-1-1; the 1 st effect sub generator high temperature heat source outlet 3-2-1 is directly or indirectly communicated with the generator high temperature heat source outlet 3-12;
the high-temperature heat source inlet 3-1-2 of the 2 nd effect sub-generator is directly or indirectly communicated with the refrigerant water vapor outlet 3-5-1 of the 1 st effect sub-generator, and the high-temperature heat source inlet 3-1-3 of the 3 rd effect sub-generator is directly or indirectly communicated with the refrigerant water vapor outlet 3-5-2 of the 2 nd effect sub-generator;
The high-temperature heat source outlet 3-2-2 of the 2 nd effect sub-generator and the high-temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator are directly or indirectly (such as through a heat exchanger) communicated with the evaporator refrigerant water inlet 1-3;
the 3 rd effect sub-generator refrigerant water vapor outlet 3-5-3 is directly or indirectly communicated with the cooler refrigerant water vapor inlet 4-3;
the absorber dilute absorbent solution outlet 2-5 is directly or indirectly communicated with the 3 rd effect generator dilute absorbent solution inlet 3-3-3; the dilute absorbent solution inlet 3-3-2 of the 2 nd effect generator is directly or indirectly communicated with the concentrated absorbent solution outlet 3-4-3 of the 3 rd effect generator; the 1 st effect generator dilute absorbent solution inlet 3-3-1 is directly or indirectly communicated with the 2 nd effect generator concentrated absorbent solution outlet 3-4-2, and the 1 st effect generator concentrated absorbent solution outlet 3-4-1 is directly or indirectly communicated with the absorber concentrated absorbent solution inlet 2-4;
the condenser refrigerant water outlet 4-4 is directly or indirectly communicated with the evaporator refrigerant water inlet 1-3; the evaporator refrigerant water vapor outlet 1-4 is directly or indirectly communicated with the absorber refrigerant water vapor inlet 2-3;
The absorber cold water outlet 2-2 is directly or indirectly communicated with the condenser cooling water inlet 4-1;
the high-efficiency absorption heat pump system can be further provided with a vacuum air extractor (not shown in the figure) for extracting non-condensable gases such as air in the unit and keeping the system in a high vacuum state all the time.
The working process is as follows:
the heat medium water from the low-temperature heat source enters the evaporator heat transfer tube 1-6 in the evaporator 1 through the evaporator low-temperature heat source inlet 1-1, the evaporator 1 is in a low-pressure (such as vacuum) state, the refrigerant water of the condenser 4 enters the evaporator 1 through the condenser refrigerant water outlet 4-4 and the evaporator refrigerant water inlet 1-3, the principle that the boiling point of the water is low under the low-pressure state is utilized, the refrigerant water absorbs the heat of the heat medium water in the evaporator heat transfer tube 1-6 and then evaporates and cools the heat medium water, and meanwhile, the refrigerant water vapor generated by evaporation flows out of the evaporator 1 through the evaporator refrigerant water vapor outlet 1-4 and enters the absorber 2. The cooled heat medium water flows out of the evaporator 1 through the low-temperature heat source outlet 1-2 of the evaporator.
Cold water from a heating user enters the absorber heat transfer tube 2-7 of the absorber 2 through the absorber cold water inlet 2-1, refrigerant water vapor from the evaporator 1 enters the absorber 2 through the absorber refrigerant water vapor inlet 2-3, concentrated absorbent solution from the generator 3 is spread in the absorber 2 through the absorber concentrated absorbent solution inlet 2-4 and the absorber spray device 2-7, and concentrated absorbent solution (such as lithium bromide concentrated solution) absorbs the refrigerant water vapor from the evaporator 1 by utilizing the strong water absorption property of the concentrated absorbent solution in the absorber 2, and emits heat to raise the solution temperature, and the solution temperature can be higher than the temperature of the heating medium water from the low temperature heat source. When the absorbent solution contacts with the absorber heat transfer pipe 2-6, cold water in the heat transfer pipe is heated, so that heat transfer from low-grade heat of the heat medium water from a low-temperature heat source to cold water is realized, the temperature of the cold water is increased, and the temperature of the cold water can be higher than the temperature of the heat medium water at the low-temperature heat source inlet 1-1 of the evaporator. Then flows out of the absorber 2 through the absorber cold water outlet 2-2, enters the condenser cooling water inlet 4-1, and after the concentrated absorbent solution is changed into the dilute absorbent solution, flows out of the absorber 2 through the absorber dilute absorbent solution outlet 2-5 and is conveyed to the generator 3 (a solution pump can be arranged for driving in general).
A high-temperature driving heat source medium (such as hot water, steam and the like) enters the generator 3 through the generator high-temperature heat source inlet 3-11, firstly enters the heat transfer tube 3-6-1 of the 1 st effect sub generator through the 1 st effect sub generator high-temperature heat source inlet 3-1-1, the dilute absorbent solution (the concentrated absorbent solution for the 2 nd effect sub generator) from the 2 nd effect sub generator flows out of the 1 st effect sub generator 3-3-1 through the 1 st effect sub generator dilute absorbent solution inlet 3-3-1 and the 1 st effect sub generator spraying device 3-7-1, is scattered on the outer wall of the 1 st effect sub generator heat transfer tube 3-6-1, is heated by the high-temperature driving heat source medium in the 1 st effect sub generator heat transfer tube 3-6-1, evaporates into refrigerant water vapor, is concentrated into the concentrated absorbent solution through the 1 st effect sub generator dilute absorbent solution outlet 3-4-1, and then flows out of the 1 st effect sub generator 3-1 through the 1 st effect sub generator concentrated absorbent solution outlet 3-4-1, and enters the concentrated absorbent solution 2-4 through the 1 st effect sub generator concentrated absorbent solution inlet 2-4. The heat source medium (hot water, steam and the like) is driven at high temperature in the heat transfer tube 3-6-1 of the 1 st effect sub-generator to heat the concentrated dilute absorbent solution, meanwhile, refrigerant water vapor with higher temperature is generated, and the refrigerant water vapor flows out of the 1 st effect sub-generator 3-1 through the refrigerant water vapor outlet 3-5-1 of the 1 st effect sub-generator and enters the 2 nd effect sub-generator 3-2; the high-temperature driving heat source medium (hot water, steam and the like) exchanges heat and cools, and then flows out of the 1 st effect sub-generator through the 1 st effect sub-generator high-temperature heat source outlet 3-2-1 and flows out of the generator 3 through the generator high-temperature heat source outlet 3-12;
The refrigerant water vapor from the 1 st effect sub-generator 3-1 is used as a high-temperature driving heat source of the 2 nd effect sub-generator 3-2, enters the 2 nd effect sub-generator heat transfer tube 3-6-2 through the 2 nd effect sub-generator high-temperature heat source inlet 3-1-2, and the dilute absorbent solution from the 3 rd effect sub-generator (the concentrated absorbent solution for the 3 rd effect sub-generator and the dilute absorbent solution for the 2 nd effect sub-generator) flows out of the 2 nd effect sub-generator 3-2 through the 2 nd effect sub-generator dilute absorbent solution inlet 3-3-2 and the 2 nd effect sub-generator spraying device 3-7-2, is scattered on the outer wall of the 2 nd effect sub-generator heat transfer tube 3-6-2, is heated and concentrated into the concentrated absorbent solution by the refrigerant water vapor in the 2 nd effect sub-generator heat transfer tube 3-6-2, and flows out of the 2 nd effect sub-generator 3-2 through the 2 nd effect sub-generator concentrated absorbent solution outlet 3-4-2 to enter the 1 st effect sub-generator 3-1. The dilute absorbent solution is heated and concentrated, and simultaneously, refrigerant water vapor with higher temperature is generated, and flows out of the 2 nd effect sub-generator 3-2 through the refrigerant water vapor outlet 3-5-2 of the 2 nd effect sub-generator and enters the 3 rd effect sub-generator 3-3; the refrigerant water vapor in the heat transfer tube 3-6-2 of the 2 nd effect sub-generator is condensed into refrigerant water after heat exchange and temperature reduction, flows out of the 2 nd effect sub-generator 3-2 through the high temperature heat source outlet 3-2-2 of the 2 nd effect sub-generator, is sent to the refrigerant water inlet 1-3 of the evaporator, and can be sent to the evaporator 1 after heat exchange and temperature reduction through the heat exchanger, for example, the refrigerant water in the high temperature heat source outlet 3-2-2 of the 2 nd effect sub-generator is used for heating the absorbent solution in the 3 rd effect sub-generator 3-3 and then is sent to the evaporator 1 (not shown in the figure);
The refrigerant water vapor from the 2 nd effect sub-generator 3-2 is used as a high temperature driving heat source of the 3 rd effect sub-generator 3-3, enters the 3 rd effect sub-generator heat transfer tube 3-6-3 of the 3 rd effect sub-generator 3-3 through the high temperature heat source inlet 3-1-3 of the 3 rd effect sub-generator, the dilute absorbent solution from the dilute absorbent solution outlet 2-5 of the absorber is scattered on the outer wall of the 3 rd effect sub-generator heat transfer tube 3-6-3 through the dilute absorbent solution inlet 3-3-3 of the 3 rd effect sub-generator and the 3 rd effect sub-generator spray device 3-7-3, is heated and concentrated into a concentrated absorbent solution through the refrigerant water vapor in the 3-6-3 of the 3 rd effect sub-generator heat transfer tube, flows out of the 3 rd effect sub-generator 3 through the concentrated absorbent solution outlet 3-4-3 of the 3 rd effect sub-generator, and enters the 2 nd effect sub-generator 3-2. The dilute absorbent solution is heated and concentrated, and simultaneously, refrigerant water vapor with higher temperature is generated, and flows out of the 3 rd effect sub-generator 3-3 through the 3 rd effect sub-generator refrigerant water vapor outlet 3-5-3, and is sent to the condenser refrigerant water vapor inlet 4-3 to enter the condenser 4; the refrigerant water vapor in the heat transfer tube 3-6-3 of the 3 rd effect sub-generator is condensed into refrigerant water after heat exchange and temperature reduction, flows out of the 3 rd effect sub-generator 3-3 through the high temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator, is sent to the refrigerant water inlet 1-3 of the evaporator, and is also sent to the evaporator 1 (not shown in the figure) after heat exchange and temperature reduction through the heat exchanger;
When the number N of the sub-generators is greater than 3, the workflow of the 1 st effect sub-generator is substantially the same as that of the 1 st effect sub-generator 3-1 of the present embodiment, the workflow of the nth effect sub-generator is substantially the same as that of the 3 rd effect sub-generator 3-3 of the present embodiment, and the workflow of the intermediate effect sub-generator is substantially the same as that of the 2 nd effect sub-generator 3-2 of the present embodiment, and details thereof are omitted.
Cold water from the cold water outlet 2-2 of the absorber, which is heated by the absorber 2, is used as cooling water, enters the condenser heat transfer tube 4-6 through the condenser cooling water inlet 4-1, high-temperature refrigerant water vapor from the 3 rd effect generator 3-3 of the generator 3 and optionally condensed refrigerant water from the heat transfer tubes of the 2 rd and 3 rd effect generators exchange heat with the cooling water in the condenser heat transfer tube 4-6 in the condenser 4, and the refrigerant water vapor releases condensation latent heat to condense into refrigerant water. After the cold water absorbs heat and heats up, the cold water flows out of the condenser 4 through the condenser cooling water outlet 4-2 and is sent to a heat user for use; the refrigerant water flows out of the condenser 4 through the condenser refrigerant water outlet 4-4, enters the evaporator 1 and evaporates, thus circulating.
The high-efficiency absorption heat pump system adopts a multi-effect cascade generator, and uses secondary steam (absorbing gasification latent heat) generated by heating a dilute absorbent solution by a heat source driven by a high temperature of a sub-generator of the previous effect (referring to the effect close to the 1 st effect) step by step as a heat source driven by a high temperature of a sub-generator of the next effect (referring to the effect far from the 1 st effect) (giving off the vaporization latent heat). The heat is transferred to the absorbent solution in the 1 st effect generator by the high-temperature driving heat source from the outside, the absorbent solution absorbs the vaporization latent heat to generate refrigerant water vapor which is concentrated at the same time, and most of the heat transferred to the absorbent solution by the high-temperature driving heat source is carried by the refrigerant water vapor to be transferred to the next effect; the refrigerant vapor from the last effect generator is used as a high-temperature driving heat source to transfer heat to the first effect absorbent solution to be condensed into refrigerant water, the first effect absorbent solution absorbs vaporization latent heat to generate refrigerant vapor and is concentrated at the same time, the refrigerant vapor generated by the first effect carries most of heat carried by the first effect refrigerant vapor and then transfers to the next effect generator, and the like, the absorbent solution absorbs vaporization latent heat and simultaneously generates refrigerant vapor to be concentrated, the refrigerant vapor heats the absorbent solution to emit vaporization latent heat and is condensed into the refrigerant water-absorbent solution to absorb vaporization latent heat to generate refrigerant vapor to be concentrated at the same time, and a certain amount of heat energy is repeatedly used in the process of absorbing, vaporizing and exothermic condensing by taking the refrigerant water as a medium to drive the separation of the dilute absorbent solution into the concentrated absorbent solution and the refrigerant vapor, so that the separation, the concentration and the regeneration of the dilute absorbent solution are realized, the consumed energy is small, and the energy utilization efficiency is high. Therefore, the multi-effect absorption heat pump has high utilization efficiency of high-temperature driving heat, the heat pump can absorb low-temperature heat source heat with lower temperature, and the heating capacity is high.
In the embodiment, the absorbent channels of the generators 3 are connected in series, and the generators 3 adopt a mode of driving the heat source medium and the absorbent solution to flow reversely and exchange heat to drive the absorbent and the refrigerant steam to separate, so that the concentrated absorbent solution with higher concentration can be obtained, and the concentrated absorbent solution can be sent to the absorber to absorb the heat of the low-temperature heat source.
Any effect generator can also adopt an immersion type heat exchange mode: the dilute absorbent solution from the dilute absorbent solution inlet of the effect generator is accumulated at the bottom of the tank body of the effect generator to form a proper depth, the effect generator heat transfer tube is immersed in the absorbent solution, and the effect generator heat transfer tube mainly transfers heat to the absorbent solution in a conduction mode.
Optionally, an absorbent solution pump 2-8 is connected in series to the absorbent solution channel, which is directly or indirectly connected to the dilute absorbent solution outlet 2-5 or the concentrated absorbent solution inlet 2-4 of the absorber, for driving the absorbent solution to flow.
In actual use, the heat exchange device 10 may also be provided in general. The heat exchange device is used for heating the dilute absorbent solution with lower temperature from the absorber 2 by using the concentrated absorbent solution with higher temperature from the generator 3, the concentrated absorbent solution after heat exchange and temperature reduction is sent into the absorber 2 again, and the dilute absorbent solution after heat exchange and temperature increase is sent into the generator 3 again, so that the consumption of a high-temperature driving heat source is reduced.
Optionally, the level of the 1 st effect sub-generator to the 3 rd effect sub-generator increases sequentially. That is, the 3 rd effect sub-generator 3-3 is higher in level than the 2 nd effect sub-generator 3-2, and the 2 nd effect sub-generator 3-2 is higher in level than the 1 st effect sub-generator 3-1. The advantages are that when the absorbent solution connection mode and the flow mode of each effect generator in the generator 3 in the embodiment are adopted, the absorbent solution can flow automatically step by step from top to bottom, and the power consumption of the system is reduced.
Optionally, each effect generator of the generator 3 adopts an integrated structure, and adjacent effect generators in the generator 3 can be separated by a partition plate, so that materials and occupied space can be reduced.
Fig. 1-1 is a schematic structural view of another embodiment of the high efficiency absorption heat pump of the present utility model.
As shown in fig. 1-1, on the basis of fig. 1, the condenser cooling water outlet 4-2 is connected in series with a cold water reheater 16. When the cold water temperature of the condenser cooling water outlet 4-2 cannot meet the requirement of a heat user, the cold water is further heated by the cold water reheater 16 and sent to the user for use. The cold water reheater 16 may be heated with hot water, steam or flue gas.
Fig. 1-2 are schematic structural views of another embodiment of the high efficiency absorption heat pump of the present utility model.
As shown in fig. 1-2, a first cold water reheater 7 is also provided on the basis of fig. 1-1. The first cold water reheater 7 is provided with a first cold water reheater inlet 7-1 and a first cold water reheater outlet 7-2; the first cold water reheater inlet 7-1 is in direct or indirect communication with the absorber cold water outlet 2-2; the first cold water reheater outlet 7-2 communicates with the hot user. Optionally, the first cold water reheater 7 is heated with hot water, steam or flue gas.
The working flow is as follows:
a part of the cold water heated by the absorber 2 is split and sent to the first cold water reheater 7 for heating and then sent to a hot user for use. Because the efficient absorption heat pump system of the utility model adopts the multi-effect generator, the same high-temperature driving heat source heat can drive and separate more concentrated absorbent solution for absorbing the heat of low-temperature heat source by the absorber 2, besides the refrigerant water vapor generated by the last effect (3 rd effect in the embodiment) of the sub-generator is sent to the condenser 4 to heat cold water from the absorber 2, the refrigerant water vapor generated by the high-temperature driving heat source of other sub-generators is used as the next high-temperature driving heat source to heat the dilute absorbent solution, and the refrigerant water vapor is subjected to heat exchange, temperature reduction and release of vaporization latent heat to be condensed into refrigerant water, if the available heat carried by the refrigerant water vapor sent to the condenser 4 to heat the cold water is less, the refrigerant water vapor entering the condenser 4 is generally sent to the evaporator 1. For this purpose, the cold water heated by the absorber 2 can be split off to a part and sent to the first heater 7 for further heating and then sent to the hot user for use. Therefore, the heat of the low-temperature heat source is absorbed by the absorption heat pump by utilizing the multi-effect generator and the absorber, and the temperature of cold water sent out by the absorption heat pump can be ensured so as to meet the requirements of heat users.
Fig. 1-3 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 1-3, the main difference between fig. 1-3 and fig. 1 is that the absorbent channels of the generators 3 are connected in parallel. Each effect generator dilute absorbent solution inlet is directly or indirectly communicated with the absorber dilute absorbent solution outlet 2-5, and each effect generator concentrated absorbent solution outlet is directly or indirectly communicated with the absorber concentrated absorbent solution inlet 2-4. For this embodiment, the 1 st effect sub-generator dilute absorbent solution inlet 3-3-1, the 2 nd effect sub-generator dilute absorbent solution inlet 3-3-2, and the 3 rd effect sub-generator dilute absorbent solution inlet 3-3-3 are all in direct or indirect communication with the absorber dilute absorbent solution outlet 2-5; the 1 st effect sub generator concentrated absorbent solution outlet 3-4-1, the 2 nd effect sub generator concentrated absorbent solution outlet 3-4-2 and the 3 rd effect sub generator concentrated absorbent solution outlet 3-4-3 are directly or indirectly communicated with the absorber concentrated absorbent solution inlet 2-4.
The working process is as follows:
the dilute absorbent solution from the dilute absorbent solution outlet 2-5 of the absorber enters the sub-generator through the dilute absorbent solution inlet of each sub-generator to be heated and concentrated, and then is sent to the concentrated absorbent solution inlet 2-4 of the absorber through the concentrated absorbent solution outlet of the sub-generator to enter the absorber 2. The benefit of this embodiment is that the generator may increase the amount of separation of the dilute absorbent solution, but it may be disadvantageous to increase the concentration of the concentrated absorbent solution.
The absorber channels of the generator 3 can also be connected in series and parallel in a mixed communication mode, namely, the absorber channels of partial generators of the generator 3 are connected in parallel, and the absorber channels of partial generators are connected in series. And will not be described in detail herein.
Fig. 1-4 are schematic structural views of another embodiment of an evaporator in a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 1-4, the evaporator tank 1-0 is also provided with an evaporator refrigerant water outlet 1-9 and an evaporator refrigerant water circulation inlet 1-10; an evaporator spraying device 1-7 is arranged above the evaporator heat transfer pipe 1-6 in the evaporator tank 1-0; the device is also provided with a refrigerant pump 1-8; the evaporator refrigerant water outlet 1-9 is directly or indirectly communicated with the evaporator refrigerant water circulation inlet 1-10 through the refrigerant pump 1-8; the evaporator refrigerant water circulation inlet 1-10 is in direct or indirect communication with the evaporator spray device 1-7.
The working process is as follows:
the part of the refrigerant water from the evaporator refrigerant water inlet 1-3, which is not evaporated, falls to the lower part of the evaporator tank body 1-0, and the refrigerant water flows out from the evaporator refrigerant water outlet 1-9 and enters the evaporator spraying device 1-7 through the evaporator refrigerant water circulation inlet 1-10 under the driving of the refrigerant pump 1-8, the evaporator spraying device 1-7 spreads the refrigerant water on the evaporator heat transfer tube 1-6, absorbs the heat of the low-temperature heat source after exchanging heat with the low-temperature heat source water in the evaporator heat transfer tube 1-6, and part of the refrigerant water is evaporated into refrigerant water vapor in the vacuum environment in the evaporator tank body 1-0 and then flows out of the evaporator 1 into the absorber 2 through the evaporator refrigerant water vapor outlet 1-4; part of the refrigerant water which is not evaporated falls into the lower part of the evaporator tank 1-0, and continues to circulate under the driving of the refrigerant pump 1-8.
The evaporator refrigerant water inlets 1-10 may also utilize the evaporator refrigerant water inlets 1-3.
The refrigerant water from the refrigerant water inlet 1-3 of the evaporator can be sprayed on the outer wall of the heat transfer tube 1-6 of the evaporator through the spraying device, and the heat exchange efficiency is high. And the refrigerant can be driven by a refrigerant pump to circularly spray and exchange heat with low-temperature heat sources in the evaporator heat transfer tubes 1-6 after being input into the evaporator 1.
Fig. 1-5 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 1 to 5, the difference from fig. 1 is that the high temperature heat source outlets of the other effect generators except the 1 st effect generator 3-1 are directly or indirectly communicated with the refrigerant water inlet 1-3 of the evaporator through the condenser 4. The high-temperature heat source outlet 3-2-2 of the 2 nd effect sub-generator and the high-temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator are respectively communicated with the refrigerant water inlet 1-3 of the evaporator directly or indirectly through the condenser 4.
The working process is as follows:
after the refrigerant water vapor from the 1 st effect sub-generator 3-1 enters the 2 nd effect sub-generator heat transfer tube 3-6-2 for heat exchange, the refrigerant water vapor flows out of the 2 nd effect sub-generator high temperature heat source outlet 3-2-2, then is sent to the condenser 4 for further heat exchange and cooling with cold water, and is sent to the evaporator 1 in a refrigerant water state for heat exchange and evaporation with a low temperature heat source.
The water vapor of the refrigerant from the 2 nd effect sub-generator 3-2 enters the heat transfer tube 3-6-3 of the 3 rd effect sub-generator to exchange heat, flows out of the high temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator, is sent to the condenser 4 to exchange heat with cold water further for cooling, is sent to the evaporator 1 in the water state of the refrigerant, and exchanges heat with the low temperature heat source for evaporation;
the refrigerant steam from the last effect sub-generator enters the heat transfer tube of the first effect sub-generator to exchange heat and flow out, and the common temperature is still higher, so that the refrigerant steam can be sent to the condenser to exchange heat with cold water to cool and then is sent to the evaporator 1 to exchange heat and evaporate, and the heat of the low-temperature heat source in the heat transfer tube 1-6 of the evaporator can be absorbed more.
Fig. 1-6 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 1-6, the difference from fig. 1 is that a cold water preheater 40 is further provided, the cold water preheater 40 is provided with a cold water inlet 40-1 of the cold water preheater, a cold water outlet 40-2 of the cold water preheater, a cold water inlet 40-3 of the cold water preheater and a cold water outlet 40-4 of the cold water preheater, and the high temperature heat source outlets of the other sub-generators except the 1 st sub-generator 3-1 are directly or indirectly communicated with the refrigerant water inlet 1-3 of the evaporator through the cold water preheater 40, namely, the high temperature heat source outlet 3-2-2 of the 2 nd sub-generator and the high temperature heat source outlet 3-2-3 of the 3 rd sub-generator are respectively and directly or indirectly communicated with the cold water inlet 40-3 of the cold water preheater; the cold water outlet 40-4 of the cold water preheater is directly or indirectly communicated with the cold water inlet 1-3 of the evaporator, cold water from a hot user is directly or indirectly communicated with the cold water inlet 40-1 of the cold water preheater, and the cold water outlet 40-2 of the cold water preheater is directly or indirectly communicated with the cold water inlet 2-1 of the absorber.
The working process is as follows:
after the water vapor of the refrigerant from the 1 st effect sub-generator 3-1 enters the 2 nd effect sub-generator heat transfer tube 3-6-2 for heat exchange, the water vapor flows out of the 2 nd effect sub-generator high temperature heat source outlet 3-2-2, then is sent to the cold water preheater 40 for further heat exchange and cooling with cold water, and is sent to the evaporator 3 in the water state of the refrigerant for heat exchange and evaporation with a low temperature heat source;
after the water vapor of the refrigerant from the 2 nd effect sub-generator 3-2 enters the heat transfer tube 3-6-3 of the 3 rd effect sub-generator to exchange heat, the water vapor flows out of the high temperature heat source outlet 3-2-3 of the 3 rd effect sub-generator, then is sent to the cold water preheater 40 to exchange heat with cold water further for cooling, and is sent to the evaporator 3 in the water state of the refrigerant to exchange heat with the low temperature heat source for evaporation;
the cold water is preheated by a cold water preheater 40 and then sent to the absorber 2.
Because the refrigerant water vapor from the last effect sub-generator enters the heat transfer tube of the present effect sub-generator to exchange heat and condense, and the common temperature is still higher after the refrigerant water flows out, the refrigerant water vapor can be sent to the cold water preheater to exchange heat with the cold water to cool and then is sent to the evaporator 1 to exchange heat and evaporate, and the heat of the low-temperature heat source in the heat transfer tubes 1-6 of the evaporator can be absorbed more. In a certain range, the temperature of the cold water is raised, and the influence on the absorption of the refrigerant water vapor from the evaporator 1 by the concentrated absorbent solution in the absorber 2 is small, so that the temperature of the cold water at the cold water outlet 2-2 of the absorber can be raised, and the efficiency of the absorption heat pump can be improved.
According to different temperatures of the refrigerant water at the high-temperature heat source outlets of the sub-generators, the connection modes of fig. 1, fig. 1-5 and fig. 1-6 can be adopted, for example, the refrigerant water at the high-temperature heat source outlet of the sub-generator with low temperature of the refrigerant water at the high-temperature heat source outlet of the sub-generator is sent to the evaporator 3, and the refrigerant water at the high-temperature heat source outlet of the sub-generator with high temperature of the refrigerant water at the high temperature of the sub-generator is sent to the evaporator 3 through the condenser 4 or the cold water preheater 40. Different sub-generators in the same generator may be connected in different ways.
Fig. 2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 2, on the basis of fig. 1, the high-efficiency absorption heat pump system is further provided with a first generator 31 and a second generator 32;
the first generator 31 includes a 1 st-effect sub first generator 31-1 and a 2 nd-effect sub first generator 31-2;
the 1 st effect sub first generator 31-1 comprises a 1 st effect sub first generator tank body 3-0-1-1, and a 1 st effect sub first generator heat transfer tube 3-6-1-1 is arranged in the 1 st effect sub first generator tank body 3-0-1-1; the 1 st effect first generator tank body 3-0-1-1 is provided with a 1 st effect first generator high temperature heat source inlet 3-1-1-1, a 1 st effect first generator high temperature heat source outlet 3-2-1-1, a 1 st effect first generator dilute absorbent solution inlet 3-3-1-1, a 1 st effect first generator concentrated absorbent solution outlet 3-4-1-1 and a 1 st effect first generator refrigerant water vapor outlet 3-5-1-1; the high-temperature heat source inlet 3-1-1-1 of the first generator of the 1 st effect is directly or indirectly communicated with the high-temperature heat source outlet 3-2-1-1-1 of the first generator of the 1 st effect through the heat transfer tube 3-6-1-1-1 of the first generator of the 1 st effect, and a heating channel of the first generator of the 1 st effect is formed. The 1 st effect first generator tank body 3-0-1-1 is also internally provided with a 1 st effect first generator spray device 3-7-1-1, and the 1 st effect first generator dilute absorbent solution inlet 3-3-1-1 is directly or indirectly communicated with the 1 st effect first generator spray device 3-7-1-1.
The 2 nd effect sub first generator 31-2 comprises a 2 nd effect sub first generator tank body 3-0-2-1, and a 2 nd effect sub first generator heat transfer tube 3-6-2-1 is arranged in the 2 nd effect sub first generator tank body 3-0-2-1; the 2 nd effect sub first generator tank body 3-0-2-1 is provided with a 2 nd effect sub first generator high temperature heat source inlet 3-1-2-1, a 2 nd effect sub first generator high temperature heat source outlet 3-2-2-1, a 2 nd effect sub first generator dilute absorbent solution inlet 3-3-2-1, a 2 nd effect sub first generator concentrated absorbent solution outlet 3-4-2-1 and a 2 nd effect sub first generator refrigerant water vapor outlet 3-5-2-1; the high-temperature heat source inlet 3-1-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the high-temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect through the heat transfer tube 3-6-2-1 of the first generator of the 2 nd effect, and forms a heating channel of the first generator of the 2 nd effect. The 2 nd effect first generator tank body 3-0-2-1 is also internally provided with a 2 nd effect first generator spray device 3-7-2-1, and the 2 nd effect first generator dilute absorbent solution inlet 3-3-2-1 is directly or indirectly communicated with the 2 nd effect first generator spray device 3-7-2-1.
The high-temperature heat source inlet 3-1-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the refrigerant water vapor outlet 3-5-1-1 of the first generator of the 1 st effect, the high-temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the refrigerant water inlet 1-3 of the evaporator, and the refrigerant water vapor outlet 3-5-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the refrigerant water vapor inlet 4-3 of the condenser.
The 2 nd effect first generator dilute absorbent solution inlet 3-3-2-1 is directly or indirectly communicated with the absorber dilute absorbent solution outlet 2-5; the concentrated absorbent solution outlet 3-4-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the dilute absorbent solution inlet 3-3-1-1 of the first generator of the 1 st effect; the 1 st effect first generator concentrated absorbent solution outlet 3-4-1-1 is directly or indirectly communicated with the absorber concentrated absorbent solution inlet 2-4.
The second generator 32 includes a 1 st effect sub-second generator 32-1;
the 1 st effect sub second generator 32-1 comprises a 1 st effect sub second generator tank 3-0-1-2, and a 1 st effect sub second generator heat transfer tube 3-6-1-2 is arranged in the 1 st effect sub second generator tank 3-0-1-2; the 1 st effect sub second generator tank body 3-0-1-2 is provided with a 1 st effect sub second generator high temperature heat source inlet 3-1-1-2, a 1 st effect sub second generator high temperature heat source outlet 3-2-1-2, a 1 st effect sub second generator dilute absorbent solution inlet 3-3-1-2, a 1 st effect sub second generator concentrated absorbent solution outlet 3-4-1-2 and a 1 st effect sub second generator refrigerant water vapor outlet 3-5-1-2; the high-temperature heat source inlet 3-1-1-2 of the second generator of the 1 st effect is directly or indirectly communicated with the high-temperature heat source outlet 3-2-1-2 of the second generator of the 1 st effect through the heat transfer tube 3-6-1-2 of the second generator of the 1 st effect, and a heating channel of the second generator of the 1 st effect is formed. The 1 st effect sub second generator tank body 3-0-1-2 is also internally provided with a 1 st effect sub second generator spray device 3-7-1-2, and the 1 st effect sub second generator dilute absorbent solution inlet 3-3-1-2 is directly or indirectly communicated with the 1 st effect sub second generator spray device 3-7-1-2.
The refrigerant vapor outlet 3-5-1-2 of the second generator of the 1 st effect is directly or indirectly communicated with the refrigerant vapor inlet 4-3 of the condenser.
The 1 st effect second generator dilute absorbent solution inlet 3-3-1-2 is directly or indirectly communicated with the absorber dilute absorbent solution outlet 2-5, and the 1 st effect second generator concentrated absorbent solution outlet 3-4-1-2 is directly or indirectly communicated with the absorber concentrated absorbent solution inlet 2-4.
The 1 st effect sub-generator high temperature heat source outlet 3-2-1 of the generator 3 is directly or indirectly communicated with the 1 st effect sub-first generator high temperature heat source inlet 3-1-1-1 of the first generator 31; the 1 st effect first generator high temperature heat source outlet 3-2-1-1 is directly or indirectly communicated with the 1 st effect second generator high temperature heat source inlet 3-1-1-2 of the second generator 32; the 1 st effect of the second generator 32 is that the second generator high temperature heat source outlet 3-2-1-2 is directly or indirectly communicated with the generator high temperature heat source outlet 3-12.
The working process is as follows:
the operation of the first generator 31: the high-temperature driving heat source medium from the generator high-temperature heat source inlet 3-11 flows out after heat exchange and temperature reduction of the 1 st effect sub generator 3-1 of the generator 3, and enters the 1 st effect sub first generator heat transfer tube 3-6-1-1 through the 1 st effect sub first generator high-temperature heat source outlet 3-1-1-1 as the high-temperature driving heat source medium of the first generator 31, the dilute absorbent solution from the 2 nd effect sub first generator (the concentrated absorbent solution for the 2 nd effect sub first generator and the dilute absorbent solution for the 1 st effect sub first generator) flows out through the 1 st effect sub first generator dilute absorbent solution inlet 3-3-1-1 and the 1 st effect sub first generator spray device 3-7-1-1, is scattered on the outer wall of the 1 st effect sub first generator heat transfer tube 3-6-1-1, is heated and concentrated by the high-temperature driving heat source medium in the 1 st effect sub first generator heat transfer tube 3-6-1-1 to flow out to the concentrated absorbent solution through the 1 effect sub first generator 3-1-1-1, and then flows out to the first generator 1 effect sub 1-1-1, and is delivered to the first generator 1-1-1 effect sub 1 through the first generator 1-1-1, and the concentrated absorbent solution is delivered to the first generator 1-1-1 effect sub 1. The high-temperature driving heat source medium in the heat transfer tube 3-6-1-1 of the 1 st effect sub-first generator heats the concentrated dilute absorbent solution and generates refrigerant water vapor with higher temperature, and the refrigerant water vapor flows out of the 1 st effect sub-first generator 31-1 through the refrigerant water vapor outlet 3-5-1-1 of the 1 st effect sub-first generator and enters the 2 nd effect sub-first generator 31-2; after the heat transfer of the heat source medium driven by the high temperature in the heat transfer pipe 3-6-1-1 of the 1 st effect sub-first generator exchanges heat and cools, the heat flows out of the 1 st effect sub-first generator 31-1 and the first generator 31 through the high temperature heat source outlet 3-2-1-1 of the 1 st effect sub-first generator and is sent to the second generator 32.
The refrigerant water vapor from the first generator 31-1 of the 1 st effect is used as a high-temperature driving heat source medium of the first generator 31-2 of the 2 nd effect, enters the first generator heat transfer tube 3-6-2-1 of the 2 nd effect through the high-temperature heat source inlet 3-1-2-1 of the first generator of the 2 nd effect, the dilute absorbent solution from the dilute absorbent solution outlet 2-5 of the absorber flows out of the first generator 31-2 of the 2 nd effect through the absorbent solution inlet 3-3-2-1 of the first generator of the 2 nd effect and the spraying device 3-7-2-1 of the first generator of the 2 nd effect, is scattered on the outer wall of the first generator heat transfer tube 3-6-2-1 of the 2 nd effect, is heated and concentrated into the concentrated absorbent solution through the concentrated absorbent solution outlet 3-4-2-1 of the first generator of the 2 nd effect, and enters the first generator 31-1 of the 1 st effect. The refrigerant vapor in the 2 nd effect first generator heat transfer tube 3-6-2-1 heats the concentrated dilute absorbent solution and generates the refrigerant vapor with higher temperature, and the refrigerant vapor flows out of the 2 nd effect first generator 31-2 through the 2 nd effect first generator refrigerant vapor outlet 3-5-2-1 and is sent to the condenser refrigerant vapor inlet 4-3; the refrigerant water vapor in the heat transfer tube 3-6-2-1 of the first generator of the 2 nd effect is condensed into refrigerant water after heat exchange and temperature reduction, flows out of the first generator 31-2 of the 2 nd effect through the high-temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect, is sent to the refrigerant water inlet 1-3 of the evaporator, and can be sent to the evaporator 1 (not shown in the figure) after heat exchange and temperature reduction through the heat exchanger;
The second generator 32 operates: the high-temperature driving heat source medium enters the 1 st effect secondary second generator heat transfer tube 3-6-1-2 through the 1 st effect secondary second generator high-temperature heat source inlet 3-1-1-2 after heat exchange and temperature reduction of the 1 st effect secondary first generator 31-1 and is used as the high-temperature driving heat source medium of the second generator 32, the dilute absorbent solution from the absorber dilute absorbent solution outlet 2-5 flows out of the 1 st effect secondary second generator 32-1 through the 1 st effect secondary absorbent solution inlet 3-3-1-2 and the 1 st effect secondary second generator spray device 3-7-1-2 after being heated and concentrated into the concentrated absorbent solution through the 1 st effect secondary second generator concentrated absorbent solution outlet 3-4-1-2 and is spread on the outer wall of the 1 st effect secondary second generator heat transfer tube 3-6-1-2, and is sent to the absorber 2. The high temperature driving heat source medium in the heat transfer tube 3-6-1-2 of the second generator of the 1 st effect heats the concentrated dilute absorbent solution and simultaneously generates refrigerant water vapor with higher temperature, and the refrigerant water vapor flows out of the second generator 32-1 of the 1 st effect through the refrigerant water vapor outlet 3-5-1-2 of the second generator of the 1 st effect and is sent to the refrigerant water vapor inlet 4-3 of the condenser. The high-temperature driving heat source medium exchanges heat and cools down, and then flows out of the 1 st effect sub second generator 32-1 and the second generator 32 through the 1 st effect sub second generator high-temperature heat source outlet 3-2-1-2, and is sent out of the system through the generator high-temperature heat source outlet 3-12.
Other working processes are the same as those of fig. 1, and will not be described again.
The first generator and the second generator are arranged, the high-temperature driving heat source after heat exchange and temperature reduction of the 1 st effect sub-generator of the generator 3 is used as the high-temperature driving heat source of the first generator and the high-temperature driving heat source of the second generator in sequence, the high-temperature driving heat source is subjected to gradual heat exchange and temperature reduction, and the multi-effect generator is arranged according to the temperature level of each stage of high-temperature driving heat source, so that the high-temperature driving heat source can be fully utilized, and the efficiency of the absorption heat pump is improved.
Each effect sub-generator in any downstream generator can independently select an immersion type heat exchange mode: the dilute absorbent solution from the dilute absorbent solution inlet of the effect generator is accumulated at the bottom of the tank body of the effect generator to form a proper depth, the effect generator heat transfer tube is immersed in the absorbent solution, and the effect generator heat transfer tube mainly transfers heat to the absorbent solution in a conduction mode.
Optionally, the heat transfer tube comprises a round tube, a square tube, and a rectangular tube; the rectangular tube comprises plate pairs of a plate heat exchanger;
optionally, the level of each sub-generator of each said generator is raised in turn. For example, in the embodiment shown in FIG. 2, the 2 nd sub-first generator 31-2 of the first generator is level higher than the 1 st sub-first generator 31-1. The advantages are that when the absorbent solution connection mode and the flow mode (the absorbent channels of the sub-generators are connected in series) of the sub-generators of each generator are adopted in the embodiment, the flow can be gradually automatically carried out from top to bottom, and the power consumption of the system is reduced.
Optionally, each effect generator of any generator adopts an integrated structure. That is, the adjacent sub-generators can be separated by a partition board, so that the material consumption and the occupied area can be reduced.
Fig. 2-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 2-1, the difference from fig. 2 is that the 1 st sub second generator concentrated absorbent solution outlet 3-4-1-2 of the second generator 32 is in direct or indirect communication with the 1 st sub first generator dilute absorbent solution inlet 3-3-1-1 of the first generator 31; the 1 st effect first generator concentrated absorbent solution outlet 3-4-1-1 of said first generator 31 is in direct or indirect communication with the 1 st effect generator dilute absorbent solution inlet 3-3-1 of the generator 3.
The working process comprises the following steps: the concentrated absorbent solution at the 1 st-effect second-generator concentrated absorbent solution outlet 3-4-1-2 of the second generator 32 is sent to the absorbent channel of the 1 st-effect first generator 31-1 of the first generator 31 to be further heated and concentrated, and the concentrated absorbent solution at the 1 st-effect first-generator concentrated absorbent solution outlet 3-4-1-1 of the first generator 31 is sent to the absorbent concentrated absorbent solution inlet 2-4 after being further heated and concentrated through the absorbent channel of the 1 st-effect first-generator 3-1 of the generator 3. The advantage is that the concentration of the concentrated absorbent solution at the outlet of each generator at the downstream can be increased, thereby improving the efficiency of the absorption heat pump. For the downstream generator, especially the most downstream generator, the concentration of the absorbent solution at the outlet of the downstream generator is reduced due to the lower temperature of the inputted high-temperature driving heat source, and the concentrated absorbent solution at the outlet of the sub-generator of the downstream generator is sent to the upstream first-effect (or other effects) sub-generator with higher high-temperature driving heat source or the first-effect (or other effects) sub-generator of the most upstream generator for further concentration, so that the working efficiency of the absorption heat pump can be ensured.
Fig. 2-2 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 2-2, the difference from fig. 2 is that the high-temperature heat source outlets of the other sub-generators except the high-temperature heat source outlet of the 1 st sub-generator are directly or indirectly communicated with the refrigerant water inlet of the evaporator through the condenser.
The working process is as follows:
the refrigerant water vapor from the first generator 31-1 of the 1 st effect enters the heat transfer tube 3-6-2-1 of the first generator of the 2 nd effect for heat exchange, flows out of the high temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect, is sent to the condenser 4 for further heat exchange and cooling with cold water, is sent to the evaporator 1 in the water state of the refrigerant, and is subjected to heat exchange and evaporation with the low temperature heat source.
The refrigerant water vapor from the last sub-generator in each generator enters the heat transfer tube of the sub-generator for heat exchange and condensation to form refrigerant water which flows out, and the common temperature is still higher, so that the refrigerant water vapor can be sent to the condenser for heat exchange and cooling with cold water before being sent to the evaporator 1 for heat exchange and evaporation, and the heat of a low-temperature heat source in the heat transfer tubes 1-6 of the evaporator can be absorbed more.
In this embodiment, the refrigerant water at the high-temperature heat source outlets 3-2-2 and 3-efficiency sub-generator high-temperature heat source outlets 3-2-3 is also sent to the condenser 4 to be further heat-exchanged with cold water for cooling, and then sent to the evaporator 1 to be heat-exchanged with low-temperature heat source for cooling.
Fig. 2-3 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 2-3, differs from fig. 2 in that,
the first cold water preheater 41 is further provided, and the first cold water preheater 41 is provided with a first cold water preheater cold water inlet 41-1, a first cold water preheater cold water outlet 41-2, a first cold water preheater refrigerant water inlet 41-3 and a first cold water preheater refrigerant water outlet 41-4. The high-temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect is directly or indirectly communicated with the refrigerant water inlet 41-3 of the first cold water preheater; the first cold water preheater refrigerant water outlet 41-4 is directly or indirectly communicated with the evaporator refrigerant water inlet 1-3, cold water from a hot user is directly or indirectly communicated with the first cold water preheater cold water inlet 41-1, and the first cold water preheater cold water outlet 41-2 is directly or indirectly communicated with the absorber cold water inlet 2-1.
The working process is as follows:
after the water vapor of the refrigerant from the first generator 31-1 of the 1 st effect enters the heat transfer tube 3-6-2-1 of the first generator of the 2 nd effect to exchange heat, the water vapor flows out of the high-temperature heat source outlet 3-2-2-1 of the first generator of the 2 nd effect, and then is sent to the first cold water preheater 41 to exchange heat with cold water for further cooling, and then is sent to the evaporator 3 in a water state of the refrigerant to exchange heat with the low-temperature heat source for evaporation; the cold water is preheated by the first cold water preheater 41 and then sent to the absorber 2.
The refrigerant water vapor from the last effect sub-generator in any generator enters the heat transfer tube of the effect sub-generator to exchange heat and condense, and then flows out, and the common temperature is still higher, so that the refrigerant water vapor can be sent to the cold water preheater to exchange heat with cold water for cooling, then is sent to the evaporator 1 to exchange heat and evaporate, and can absorb the heat of the low-temperature heat source in the heat transfer tubes 1-6 of the evaporator more. In a certain range, the temperature of the cold water is raised, and the influence on the absorption of the refrigerant water vapor from the evaporator 1 by the concentrated absorbent solution in the absorber 2 is small, so that the temperature of the cold water at the cold water outlet 2-2 of the absorber can be raised, and the efficiency of the absorption heat pump can be improved.
In this embodiment, the refrigerant water at the high-temperature heat source outlets 3-2-2 and 3-efficiency sub-generator high-temperature heat source outlets 3-2-3 is also sent to the first cold water preheater 41 to preheat cold water and then sent to the evaporator 1.
According to the difference of the temperature of the refrigerant water at the high-temperature heat source outlet of each sub-generator, the connection modes of fig. 2, 2-2 and 2-3 can be adopted, for example, if the temperature of the refrigerant water at the high-temperature heat source outlet of each sub-generator is low, the refrigerant water at the high-temperature heat source outlet of each sub-generator is sent to the evaporator 3, and if the temperature of the refrigerant water at the high-temperature heat source outlet of each sub-generator is high, the refrigerant water at the high-temperature heat source outlet of each sub-generator is sent to the evaporator 3 through the condenser 4 or the cold water preheater 40. Different sub-generators in the same generator may be connected in different ways.
Fig. 3 is a schematic diagram of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in FIG. 3, the high-efficiency absorption heat pump system is also provided with a downstream generator high-temperature heat source inlet 3-11-1; the high-temperature heat source inlet 3-11-1 of the downstream generator is directly or indirectly communicated with the high-temperature heat source inlet of the 1 st effect sub-generator of the downstream generator. In this embodiment, the downstream generator high temperature heat source inlet 3-11-1 is in direct or indirect communication with the 1 st effect second generator high temperature heat source inlet 3-1-1-2 of the second generator 32.
The working process is as follows:
working fluid water from the downstream generator high temperature heat source inlet 3-11-1 is sent to the 1 st effect second generator high temperature heat source inlet 3-1-1-2 of the second generator 32 as a high temperature driving heat source. The other workflow is the same as in fig. 2. The main advantage is that when the temperature of the high-temperature heat source medium from outside the system is lower, if the medium is sent to the generator high-temperature heat source inlet 3-11, the medium can not normally operate the system, and when the medium is sent to the downstream generator high-temperature heat source inlet 3-11-1, the normal operation of one or a plurality of downstream generators with low requirements on the high-temperature driving heat source temperature can be ensured. In different seasons and different time periods, the heat user needs of the absorption heat pump are different, the flow and the temperature of the high-temperature driving heat source medium supplied to the absorption heat pump are different, for example, the heat user needs are large in heating season, the other seasons are small, the high-temperature driving heat source medium can be adopted in heating season, so that the working efficiency and the external heat supply quantity of the absorption heat pump are improved, the other seasons can adopt other low-temperature high-temperature driving heat source mediums, the working efficiency and the external heat supply quantity of the absorption heat pump are reduced, and the high-temperature driving heat source medium with higher temperature is used in other more valuable or needed aspects. Therefore, the high-efficiency absorption heat pump system solves the problem of poor adaptability of the traditional absorption heat pump, and particularly, most of the absorption heat pumps are only used in heating seasons, and other seasons are idle in shutdown, so that investment is wasted.
The generator of the absorption heat pump adopts a longitudinal multi-effect series connection and transverse multi-stage expansion matrix structure and a countercurrent step heat exchange and step concentration mode, the upstream generator is suitable for a high-temperature driving heat source, the working efficiency and the heat energy output can be improved, the downstream generator can work normally under a medium-temperature high-temperature driving heat source, the generator can work in sections or in series, and a multi-stage high-temperature driving heat source interface is arranged. When the heat user load is high or the temperature of the high-temperature driving heat source is high, the upstream generator is adopted to operate or the transverse serial operation is adopted, the heat energy utilization efficiency is high, and the heat energy output is high; when the load of a heat user is low or the temperature of a high-temperature driving heat source is low, a downstream generator is adopted to operate, so that the regeneration of the absorbent solution can be ensured, and the normal operation of the system can be ensured. When the temperature of the high-temperature driving heat source provided by a user is low, the absorbent solution is regenerated unstably or even can not be started, and the system can not normally run. In fact, the absorption heat pump in the prior art basically operates in heating seasons, and is idle in other seasons, and one season is used for three seasons, so that huge investment waste and energy waste are caused.
Fig. 4 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 4, on the basis of fig. 1, the efficient absorption heat pump system further comprises: a boiler 21, a bypass economizer 15, an air preheater 52, a flue heat exchanger 22, a desulfurizing tower 6, a spray tower 12, a chimney 7, a blower 8, and a blower heater 9; wherein,
the boiler 21 is provided with a fuel inlet 21-1, a boiler air supply inlet 21-2 and a boiler flue gas outlet 21-3;
the bypass coal-saving device 15 is provided with a bypass coal-saving device smoke inlet 15-1, a bypass coal-saving device smoke outlet 15-2, a bypass coal-saving device working medium water inlet 15-3 and a bypass coal-saving device working medium water outlet 15-4;
the air preheater 52 is provided with an air preheater flue gas inlet 52-1, an air preheater flue gas outlet 52-2, an air preheater air supply inlet 52-3, and an air preheater air supply outlet 52-4;
the flue heat exchanger 22 is provided with a flue heat exchanger flue gas inlet 22-1, a flue heat exchanger flue gas outlet 22-2, a flue heat exchanger working medium water inlet 22-3 and a flue heat exchanger working medium water outlet 22-4; optionally, the flue heat exchanger 22 is a dividing wall heat exchanger;
the desulfurizing tower 6 includes: a desulfurizing tower body 6-1 and a slurry circulating pump 6-2; the bottom of the desulfurizing tower body 6-1 is provided with a slurry pool 6-3; the lower part of the desulfurizing tower body 6-1 is provided with a desulfurizing tower flue gas inlet 6-5, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet 6-4; a desulfurizing tower spraying device 6-6 is arranged between the desulfurizing tower flue gas inlet 6-5 and the desulfurizing tower flue gas outlet 6-4, the desulfurizing tower spraying device 6-6 is directly or indirectly communicated with the slurry circulating pump 6-2, and the slurry circulating pump 6-2 is directly or indirectly communicated with the slurry pool 6-3; optionally, a desulfurizing tower demister 6-7 is arranged between the desulfurizing tower spraying device 6-6 and the desulfurizing tower flue gas outlet 6-4;
The spray tower 12 is provided with a spray tower flue gas inlet 12-1, a spray tower flue gas outlet 12-2, a spray tower heat medium water inlet 12-3 and a spray tower heat medium water outlet 12-4. The bottom of the spray tower 12 is provided with a spray tower water receiving device 12-5. A spray tower water distribution device 12-6 for heating medium water is arranged between the spray tower flue gas inlet 12-1 and the spray tower flue gas outlet 12-2. The spray tower water distribution device 12-6 is communicated with the spray tower heat medium water inlet 12-3, and the spray tower water receiving device 12-5 is communicated with the spray tower heat medium water outlet 12-4; optionally, the spray tower water distribution device 12-6 is a water distribution tank or a water distribution pipe or a spray device;
the blower 8 is provided with a blower inlet 8-1 and a blower outlet 8-2;
the air supply heater 9 is provided with an air supply heater air supply inlet 9-1, an air supply heater air supply outlet 9-1, an air supply heater working medium water inlet 9-4 and an air supply heater working medium water outlet 9-5;
the boiler flue gas outlet 21-3 communicates directly or indirectly with both the air preheater flue gas inlet 52-1 and the bypass economizer flue gas inlet 15-1; the air preheater flue gas outlet 52-2 and the bypass economizer flue gas outlet 15-2 are both in direct or indirect communication with the flue heat exchanger flue gas inlet 22-1; the flue gas outlet 22-2 of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet 6-5 of the desulfurizing tower; the flue gas outlet 6-4 of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet 12-1 of the spraying tower; the spray tower flue gas outlet 12-2 is directly or indirectly communicated with the chimney 7;
The blower outlet 8-2 is directly or indirectly communicated with the blower inlet 9-1 of the blower heater; the air supply outlet 9-2 of the air supply heater is directly or indirectly communicated with the air supply inlet 52-3 of the air preheater; the air preheater supply air outlet 52-4 communicates directly or indirectly with the boiler supply air inlet 21-2;
the working medium water outlet 9-4 of the air supply heater is directly or indirectly communicated with the working medium water inlet 22-3 of the flue heat exchanger; the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the air supply heater working medium water inlet 9-3;
the spray tower heating medium water outlet 12-4 is directly or indirectly communicated with the evaporator low-temperature heat source inlet 1-1; the low-temperature heat source outlet 1-2 of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet 12-3;
the bypass economizer working medium water outlet 15-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the bypass economizer working medium water inlet 15-3;
the working process is as follows:
fuel is sent into a hearth of the boiler 21 through a boiler fuel inlet 21-1, an air blower 8 sends air into the hearth of the boiler 21 through an air preheater 52 and a boiler air supply inlet 21-2, the fuel burns to release heat, and flue gas generated by combustion flows out of the boiler 21 through a boiler flue gas outlet 21-3; then a part of flue gas is sent into the air preheater 52 through the flue gas inlet 52-1 of the air preheater to heat the air sent from the air sending outlet 8-2 of the air sending machine, and the flue gas exchanges heat with the air sent by the air sending machine to cool and then flows out of the air preheater 52 through the flue gas outlet 52-2 of the air preheater; part of the flue gas enters a flue gas channel of the bypass economizer 15 through a flue gas inlet 15-1 of the bypass economizer, exchanges heat with working medium water in a working medium water channel of the bypass economizer 15, cools down, and flows out of the bypass economizer 15 through a flue gas outlet 15-2 of the bypass economizer; the flue gas from the air preheater flue gas outlet 52-2 and the flue gas from the bypass economizer flue gas outlet 15-2 enter the flue gas channel of the flue heat exchanger 22 directly or indirectly through other equipment (e.g., a dust collector or/and an induced draft fan) through the flue heat exchanger flue gas inlet 22-1, heat (including heating through heat exchanger tube walls or heat exchanger plate walls, or heating through heat exchanger tube walls or heat exchanger plate walls and an intermediate medium, etc. the same applies below) the working fluid water flowing through the flue heat exchanger working fluid water channel. When the flue heat exchanger 22 is a heat pipe heat exchanger (one of the partition wall heat exchangers), the heat exchange process is as follows: the flue gas flowing through the flue heat exchanger 22 flue gas channel transfers the heat of the flue gas to an intermediate medium, such as water, in the heat pipe through the heat pipe heat section pipe wall of the flue heat exchanger 22, the intermediate medium is heated and evaporated to be in a gaseous state under the vacuum condition in the heat pipe, and the gaseous intermediate medium in the heat pipe transfers the heat to the heat pipe cold section and transfers the heat to working medium water outside the heat pipe through the heat pipe cold section pipe wall. The flue gas flows out of the flue gas outlet 22-2 of the flue heat exchanger after being cooled, and then directly flows into the flue gas inlet 6-5 of the desulfurizing tower or indirectly flows into the desulfurizing tower 6 through other equipment (such as a dust remover or/and a draught fan);
The flue gas enters the desulfurizing tower 6 from the desulfurizing tower flue gas inlet 6-5 and flows through the desulfurizing tower spraying device 6-6 from bottom to top, the desulfurizing slurry in the slurry pond 6-3 enters the desulfurizing tower spraying device 6-6 under the driving of the slurry circulating pump 6-2, the desulfurizing tower spraying device 6-6 sprays the desulfurizing slurry into the flue gas from top to bottom, the flue gas and the desulfurizing slurry exchange heat and transfer mass in a countercurrent manner, and the flue gas is optionally defogged through the desulfurizing tower defogger 6-7 in a saturated state or a nearly saturated state after being exchanged and desulfurized, and flows out of the desulfurizing tower 6 through the desulfurizing tower flue gas outlet 6-4.
The desulfurized saturated or nearly saturated flue gas enters the spray tower 12 through the spray tower flue gas inlet 12-1. The heat medium water from the low-temperature heat source outlet 1-2 of the evaporator is conveyed to the spray tower water distribution device 12-6 through the spray tower heat medium water inlet 12-3, the spray tower water distribution device 12-6 distributes the heat medium water into the flue gas, the flue gas and the heat medium water are subjected to mixed heat exchange in the spray tower 12, the saturated flue gas is further cooled, dehumidified and washed, and then the saturated flue gas is discharged into the atmosphere through the spray tower flue gas outlet 12-2 and the chimney 7.
Working medium water flows through a working medium water channel of the flue heat exchanger through a working medium water inlet 22-3 of the flue heat exchanger, the working medium water and flue gas absorb the waste heat of the flue gas through heat exchange to rise in temperature, then enters the working medium water channel of the air supply heater 9 through a working medium water outlet 22-4 of the flue heat exchanger and a working medium water inlet 9-3 of the air supply heater, the temperature of the working medium water is reduced after the working medium water heats air flowing through the air supply channel of the air supply heater 9, then flows out through a working medium water outlet 9-4 of the air supply heater, and then returns to the working medium water inlet 22-3 of the flue heat exchanger for recycling; the air supply enters an air supply channel of the air supply heater 9 through an air supply heater air supply inlet 9-1 under the drive of an air blower 8, is heated and warmed by working medium water from a flue heat exchanger 22, flows out of the air supply heater 9 through an air supply heater air supply outlet 9-2, enters an air preheater 52 through an air preheater air supply inlet 52-3, is further heated and warmed by flue gas from a boiler flue gas outlet 21-3, flows out of the air preheater 52 through an air preheater air supply outlet 52-4, and enters a boiler furnace through a boiler air supply inlet 21-2;
The sensible heat of flue gas, the vaporization latent heat of water vapor condensation and the reaction heat of the desulfurization process are absorbed by the heat medium water in the spray tower 12, the temperature is raised, the heat medium water is collected by the spray tower water receiving device 12-5, is directly or indirectly sent to the low-temperature heat source inlet 1-1 of the evaporator through the spray tower heat medium water outlet 12-4, enters the evaporator heat transfer tube 1-6, exchanges heat with the refrigerant water conveyed from the condenser 4 or/and the generator 3 in a vacuum environment, flows out of the evaporator 1 through the evaporator low-temperature heat source outlet 1-2 after being cooled, returns to the spray tower heat medium water inlet 12-3, enters the spray tower water distribution device 12-6 and is recycled; the refrigerant water absorbs the heat of the heat medium water in the evaporator heat transfer tubes 1-6 to evaporate to generate refrigerant water vapor, and the refrigerant water vapor is sent to the absorber.
The working medium water with higher temperature from the working medium water outlet 15-4 of the bypass economizer is used as a high-temperature driving heat source medium, enters the generator 3 through the high-temperature heat source inlet 3-11 of the generator, exchanges heat with the dilute absorbent solution from the absorber 2, cools down, flows out of the generator through the high-temperature heat source outlet 3-12 of the generator, returns to the working medium water inlet 15-3 of the bypass economizer, and is recycled. When a downstream generator is provided, such as a first generator, a second generator, etc., the high temperature driven heat source medium also enters the downstream generator through the generator 3 and exits through the generator high temperature heat source outlets 3-12, as follows.
The low-temperature heat energy of the heat medium water from the spray tower heat medium water outlet 12-4 is converted into the heat energy with higher temperature of the cold water under the drive of the high-temperature driving heat source medium from the bypass economizer 15.
Other working processes are basically the same as those of fig. 1 and 2, and are not repeated.
Working medium water from the flue heat exchanger heats air flowing through the air supply heater 9, and the air supply with the temperature increased is sent to the hearth of the boiler 21 after being further heated by the air preheater 52, so that the combustion efficiency of the boiler 21 can be further improved, and the waste heat of flue gas is recovered and sent to the hearth of the boiler 21, so that the fuel consumption can be equivalently saved, and the high-efficiency utilization of the waste heat of the flue gas is realized. Since the air preheater 52 has a high heat exchange efficiency, and the flow rate and heat capacity of the flue gas flowing through the air preheater 52 are much greater than those of the air supplied through the air preheater 52, the temperature difference (end difference) between the flue gas temperature of the air preheater flue gas inlet 52-1 and the supply air temperature of the air preheater supply air outlet 52-4 is small. In general, an increase in the supply air temperature of the air preheater supply air inlet 52-3 results in a smaller increase in the supply air temperature of the air preheater supply air outlet 52-4, i.e., the increase in the supply air temperature through the supply air heater supply air outlet 9-2 eventually results in less heat being supplied to the boiler furnace, most of the heat is converted into heat energy of the flue gas at the flue gas outlet of the air preheater, and this energy is converted into an equal heat rise due to the constant flue gas volume. As the air supply temperature entering the air preheater 52 is increased, the smoke temperature at the outlet of the air preheater 52 is increased, the smoke temperature at the smoke inlet 22-1 of the flue heat exchanger is increased, the waste heat of smoke absorbed by working medium water flowing through the flue heat exchanger 22 is increased, the temperature is increased, and after the working medium water flows out of the flue heat exchanger 22, the air supply heater 9 is used for heating and supplying air, the air supply temperature is increased, and the smoke temperature at the outlet of the air preheater is further increased; the circulation is that the temperature of the flue gas at the outlet of the air preheater 52 is continuously increased, the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger is also continuously increased, and the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger can not be stabilized until the heat leaving the system is equal to the heat entering the system, namely, the heat is balanced, and the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger reaches a higher level. That is, the low-temperature flue gas waste heat at the outlet of the air preheater 52 is converted into high-temperature flue gas heat through the flue heat exchanger 22, the air supply heater 9 and the air preheater 52, the temperature of the inlet flue gas of the flue heat exchanger 22 is increased, the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger is also increased, so that the low-temperature flue gas waste heat at the outlet of the air preheater 52 is converted into high-temperature flue gas heat, and the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger is increased.
On the basis of the above, in order to convert the low-grade flue gas waste heat into heat energy with higher temperature, a part of flue gas flowing through the air preheater 52 is separated and flows out into a flue gas channel of the bypass economizer 15. Under the condition that the smoke temperature of the smoke outlet 52-2 of the air preheater and the air supply temperature of the air supply outlet 52-4 of the air preheater are kept unchanged, the heat of the smoke which is split into the smoke channel of the bypass economizer 15 is equal to the heat which is transmitted to the air supply by the air supply heater 9 (the heat dissipation loss and the secondary factors are ignored), but the temperature is the smoke temperature of the smoke inlet 52-1 of the air preheater. In general, the smoke temperature of the smoke outlet 52-2 of the air preheater is about 120 ℃, the smoke temperature of the smoke inlet 52-1 of the air preheater is about 300 ℃, the heat is equal, the heat energy temperature and the quality are greatly improved, and the working medium water temperature of the working medium water outlet 15-4 of the bypass economizer can also be improved. Therefore, by the flue heat exchanger 22, the air supply heater 9, the air preheater 52 and the bypass economizer 15, the low-temperature flue gas waste heat from the air preheater flue gas outlet 52-2 can be converted into high-temperature heat energy with equal heat (neglecting secondary factors such as heat dissipation) and the utilization value and the utilization efficiency can be greatly improved. Namely, the low-grade smoke energy after the air preheater is converted into higher-grade heat energy, and the temperature of the working medium water at the working medium water outlet 15-4 of the bypass economizer can be increased. Therefore, by the flue heat exchanger 22, the air supply heater 9, the air preheater 52 and the bypass economizer 15, the low-temperature flue gas waste heat from the air preheater flue gas outlet 52-2 can be converted into high-temperature heat energy with higher temperature, wherein the heat is equal (secondary factors such as heat dissipation are omitted), and the utilization value and the utilization efficiency are greatly improved.
When the heat transferred to the air supply through the air supply heater 9 is ignored and finally distributed into the hearth of the boiler 21 and other secondary factors, the heat transferred to the air supply by the air supply heater 9 is converted into the equal heat to be converted into the increase of the flue gas temperature of the flue gas outlet 52-2 of the air preheater or the increase of the bypass flue gas flow of the bypass economizer 15, namely the heat and the temperature of the working medium water outlet 22-4 of the flue heat exchanger or the heat and the temperature of the working medium water outlet 15-4 of the bypass economizer. The heat transferred to the air supply by the air supply heater 9 can be controlled to be converted into the proportion of the temperature rise of the flue gas of the air preheater flue gas outlet 52-2 and the increase of the bypass flue gas flow of the bypass economizer 15 by means of adjusting the bypass flue gas flow entering the bypass economizer flue gas inlet 15-1, namely, the proportion of the heat and the temperature rise of the working medium water of the flue heat exchanger working medium water outlet 22-4 and the heat and the temperature rise of the working medium water of the bypass economizer working medium water outlet 15-4.
The energy saving effect is better when accounting for the part of the heat transferred to the supply air by the supply air heater 9 that is eventually distributed into the furnace of the boiler 21.
In addition, the bypass economizer 15 is arranged to shunt a part of bypass flue gas from the flue gas entering the air preheater 52, so that the system resistance can be greatly reduced, the part of flue resistance increased by the flue heat exchanger 22 can be offset, and the power consumption of the induced draft fan can be reduced. Setting the inlet and outlet flue gas pressure difference of the air preheater 52 as U, the flue gas flow as Q, and the resistance of the air preheater as R, wherein R=U/Q; after the technology of the utility model is adopted, the bypass flue gas flow of the air preheater 52 which is shunted to the bypass economizer 15 is Q1, and the flue gas pressure difference at the inlet and the outlet of the air preheater 52 is changed into U1= (Q-Q1) R. It can be seen that the reduction of the flue gas flow of the air preheater can greatly reduce the pressure difference between the flue gas inlet and the flue gas outlet of the air preheater.
The air supply temperature of the air supply inlet 52-3 of the air preheater is increased, so that the problems of low-temperature corrosion and the like of the cold end of the air preheater can be effectively solved, and the old and difficult problems of deposition blockage of ammonium bisulfate of the air preheater 52 can be effectively solved: at present, most boiler units are provided with a denitration system, when the boiler load is low and the flue gas temperature is low, the efficiency of the denitration system is reduced, the ammonia spraying amount is required to be increased, and excessive ammonia gas reacts with sulfide in the flue gas to generate ammonium bisulfate. As the temperature of the flue gas in the air preheater gradually decreases, ammonium bisulfate changes from a gaseous state to a nasal discharge-like mucus in the air preheater 52 to adhere to dust, and when the temperature decreases below the solidification point temperature of the ammonium bisulfate, the ammonium bisulfate is deposited on heat exchange elements of the air preheater 52, thereby causing corrosion and blockage of the air preheater 52 and seriously affecting the operation of the air preheater. The system increases the air supply temperature of the air supply inlet 52-3 of the air preheater, and can effectively avoid the problems of corrosion and blockage of the air preheater 52 caused by ammonium bisulfate. The method can be used for improving the flexibility of the thermal power plant, reducing the lowest stable load of the unit and improving the peak shaving capacity.
The blower herein refers to various blowers that supply oxygen required for combustion to the air supply in the boiler, such as blowers and/or primary blowers in a power plant; the boiler refers to a device that burns fuel to emit heat and generates flue gas.
The utility model can convert the low-temperature heat energy of the flue gas outlet 52-2 of the air preheater into the high-temperature heat energy of the working medium water outlet 15-4 of the bypass economizer, and further uses the high-temperature working medium water of the working medium water outlet 15-4 of the bypass economizer as a high-temperature driving heat source medium of the generator 3. Meanwhile, the generator 3 of the utility model adopts a multi-effect generator, so that the advantage of high temperature of working medium water from the bypass economizer 15 can be fully utilized, the utilization efficiency of high-temperature driving heat source medium is improved, the amount or/and concentration of concentrated absorbent solution is increased, the absorber 2 is increased to absorb the heat of refrigerant water vapor from the evaporator 1, the heat of heat medium water from the spray tower 12 absorbed by the evaporator 1 is increased, the working efficiency of the absorption heat pump is improved, and more available heat is output. That is, under the condition that the heat of the flue gas waste heat of the flue gas outlet 52-2 of the air preheater is the same, the low-grade flue gas waste heat of the outlet of the desulfurizing tower 6 can be recovered more, the flue gas temperature and humidity of the outlet of the spraying tower 12 can be further reduced, and the pollutant emission and the smoke plume phenomenon are reduced. Further, the utility model adopts the downstream generator (the first generator, the second generator and the like), so that the advantage of high temperature of working medium water from the bypass economizer 15 can be more fully utilized, the utilization efficiency of high-temperature driving heat source medium is improved, and the efficiency of the absorption heat pump is improved.
In general, the flue gas temperature of the flue gas outlet 52-2 of the air preheater is about 120 ℃, and the temperature of working medium water from the flue heat exchanger 22 is about 90 ℃; the smoke temperature of the smoke inlet 52-1 of the air preheater is about 300 ℃, and the temperature of working medium water (high-temperature driving heat source) from the working medium water outlet 15-4 of the bypass economizer can reach about 290 ℃ (can be adjusted according to the requirement of the absorption heat pump); the saturated flue gas temperature of the flue gas outlet 6-4 of the desulfurizing tower is about 50 ℃, and the temperature of the heat medium water from the spray tower 12 is about 40 ℃ (low temperature heat source); the cold water temperature at the condenser cooling water outlet 4-2 can reach about 80 deg.c (output heat energy). That is, the low-grade flue gas waste heat which is difficult to recycle after the desulfurization is recycled by utilizing the mixed heat exchange of the spray tower heat medium water and the flue gas, the low-temperature flue gas waste heat of the air preheater flue gas outlet 52-2 is equivalently converted into high-temperature heat energy (which can be adjusted according to the requirement) of about 290 ℃ by utilizing the flue heat exchanger 22, the air supply heater 9 and the bypass economizer 15 and is used as a high-temperature driving heat source medium of the generator 3, the low-temperature heat of the heat medium water which is difficult to utilize and is from the spray tower 12 is converted into the middle-temperature heat which is available by utilizing the evaporator 1, the absorber 2, the generator 3 and the condenser 4, and the heat of the cold water of the condenser cooling water outlet 4-2 is equal to the sum of the heat of the working medium water from the bypass economizer working medium water outlet 15-4 and the heat of the heat medium water from the spray tower heat medium water outlet 12-4 (under the condition that the first cold water reheater 7 is not considered to be arranged), so that the increase of the available heat is realized. Compared with the prior art that a high-temperature driving heat source with higher use value is adopted, all heat of the embodiment is from flue gas waste heat, the flue gas waste heat is recovered by the flue gas waste heat, the waste is treated by the waste, the waste is recovered by the waste, and the waste is turned into wealth, so that the flue gas waste heat recovery amount, the energy quality and the utilization efficiency are greatly improved, and the economical efficiency is greatly improved.
The heat medium water is sent to the spray tower 12 for mixed heat exchange after heat exchange and temperature reduction of the evaporator. The pollutants in the flue gas such as residual desulfurization slurry, sulfur dioxide, sulfur trioxide, fine dust (such as PM 2.5), heavy metals and the like can be further removed through the washing of the large flow and full coverage of the heat medium water; the temperature and the humidity of the flue gas are reduced, and the condensable particles in the flue gas are reduced; the fine mist droplets formed by condensing the water vapor in the flue gas are used as condensation nuclei, and other fine particles can be condensed by condensation to form large particles, so that the removal efficiency is improved; the humidity of the smoke is reduced, the local atmospheric environment can be improved, the possibility of forming aerosol and haze is reduced, and the smoke plume phenomenon of the chimney is further weakened, so that the purpose of whitening the chimney is realized. As the utility model can absorb more waste heat of flue gas, the flue gas temperature at the inlet of the chimney 7 is lower, and the pollutant emission and the smoke plume can be further reduced.
In addition, the saturated flue gas or near saturated flue gas after desulfurization in the spray tower is mixed with heat medium water for heat exchange and cooling, part of water in the saturated flue gas is condensed and separated out, so that the effect of water recovery can be achieved, the part of water is condensed water without chloride ions, after the condensed water is recovered to a system, the process water supplementing can be reduced, when the process water supplementing contains chloride ions, the intake of chloride ions can be reduced, the treatment cost and the discharge of waste water are reduced, and further energy and water conservation and the discharge reduction of flue gas pollutants and water pollution are realized.
Because the flue gas at the outlet of the desulfurizing tower 6 is desulfurized and dedusted to reach a higher emission standard, the condensed water of the flue gas in the spray tower 12 has higher water quality, and can be sent to the outside of the system for use, and the water balance of the desulfurizing tower 6 is not influenced. As the saturated flue gas temperature at the outlet of the desulfurizing tower 6 is lower, near-zero end difference heat exchange can be realized by adopting mixed heat exchange, and the recovery amount of flue gas waste heat is increased.
The emission of pollutants is fundamentally reduced while the recovery and utilization efficiency of the waste heat of the flue gas is improved, and the emission of carbon dioxide is included, so that the realization of a carbon neutralization target is facilitated.
Therefore, the embodiment realizes the high-efficiency recovery and the high-efficiency utilization of the waste heat of the flue gas, and simultaneously realizes the water conservation, the deep emission reduction of the flue gas, the near zero emission and the treatment of the flue gas plume.
The number of the spray tower heating medium water outlets 12-4 can be one or more; the spray tower heating medium water inlet 12-3 may be one or more.
Optionally, a spray tower demister (not shown in the figure) is arranged on a flue gas channel between the spray tower water distribution device 12-6 and the chimney 7. The purpose is to further purify the flue gas entering the chimney through a spray tower demister.
Optionally, a heat medium water circulating pump (not shown in the figure) is arranged on the heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet 12-4 or the spray tower heat medium water inlet 12-3. The purpose is to provide flowing power for the heat medium water through a heat medium water circulating pump.
Optionally, a high-temperature heat source water pump (not shown in the figure) is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11 or the generator high-temperature heat source outlet 3-12. The purpose is to provide flowing power for the high-temperature driving heat source through the high-temperature heat source water pump.
Optionally, a dust collector or/and an induced draft fan (not shown in the figure) is connected in series to the flue heat exchanger flue gas inlet 22-1 or the flue heat exchanger flue gas outlet 22-2. The flue heat exchanger may be connected in series at any position of the flue gas channel between the air preheater and the desulfurizing tower. The dust remover can remove part of dust in the flue gas; the induced draft fan is used for sucking the flue gas in the boiler furnace and sending the flue gas to a chimney.
Optionally, the spray tower heating medium water inlet 12-3 communicates directly or indirectly with raw water source means 35 and the spray tower heating medium water outlet communicates directly or indirectly with raw water user 36. Raw water from the raw water source device 35 enters the spray tower water distribution device 12-6 through the spray tower heat medium water inlet 12-3, the raw water is heated by utilizing flue gas of the spray tower, and the heated raw water is sent to the raw water user 36 through the spray tower heat medium water outlet 12-4 so as to fully utilize the flue gas waste heat and reduce the energy consumption.
Optionally, the bypass economizer working medium water outlet 15-4 is also in communication with a hot user (not shown in the figures).
Optionally, the flue heat exchanger 22 is a tubular heat exchanger or a heat pipe heat exchanger;
optionally, the flue heat exchanger 22 is a series connection of a heat pipe heat exchanger and a tubular heat exchanger, and the heat pipe heat exchanger is arranged at the inlet of the flue heat exchanger 22, that is, at the windward position of the flue gas flow direction. The leakage quantity of the heat pipe heat exchanger after abrasion leakage is only the water quantity in a single heat pipe, so that a large quantity of leakage is avoided, and large-area ash sticking and blocking are avoided.
Optionally, a first desulfurizing tower (not shown in the figure) is connected in series on a flue which is directly or indirectly communicated with the desulfurizing tower flue gas outlet 6-5 or the desulfurizing tower flue gas outlet 6-4;
optionally, the bypass economizer 15 has two or more heat exchange modules and a series/parallel switching structure thereof, and the connection manner of the heat exchange modules of the bypass economizer 15 can be switched. If the high-temperature driving heat source is required to have high temperature, adopting a serial structure, wherein the flow rate of the working medium water in the working medium water channel of the bypass economizer 15 is small; if the temperature of the high-temperature driving heat source is low, a parallel structure is adopted, and at the moment, the flow rate of the working medium water in the working medium water channel of the bypass economizer 15 is large.
Optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet 22-3 of the flue heat exchanger or the working medium water outlet 22-4 of the flue heat exchanger;
optionally, a bypass feed pump or/and a bypass deaerator or/and a buffer water tank (not shown in the figure) is/are arranged on the working fluid water channel directly or indirectly communicated with the working fluid water inlet 15-3 of the bypass economizer. Wherein the bypass feed water pump is used for driving working medium water to enter the bypass economizer 15 and meeting the requirement of the working medium water pressure of the system; the bypass deaerator is used for removing oxygen in the working medium water so as to prevent the working medium water from corroding a working medium water channel; the buffer water tank provides buffer capacity for the bypass feed pump, and ensures the operation safety of the water pump.
Optionally, a cold water pump is connected in series with a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet.
Optionally, the high-temperature heat source outlet 3-12 of the generator is directly or indirectly communicated with the working medium water inlet 15-3 of the bypass economizer through a cooler; optionally, the cooler is a generator of other absorption heat pumps or other blow heaters (not shown).
Fig. 4-1 is a schematic diagram of another connection mode structure of the flue heat exchanger 22 in the high-efficiency absorption heat pump system of the present utility model. As shown in fig. 4-1, unlike fig. 4, the flue heat exchanger 22 includes a first stage flue heat exchange module 22a and a second stage flue heat exchange module 22b connected in series; the first-stage flue heat exchange module 22a is provided with a flue heat exchanger flue gas inlet 22-1, a first-stage flue heat exchange module flue gas outlet 22a-2, a first-stage flue heat exchange module working medium water inlet 22a-3 and a flue heat exchanger working medium water outlet 22-4; the second-stage flue heat exchange module 22b is provided with a second-stage flue heat exchange module flue gas inlet 22b-1, a flue heat exchanger flue gas outlet 22-2, a flue heat exchanger working medium water inlet 22-3 and a second-stage flue heat exchange module working medium water outlet 22b-4; the flue gas outlet 22a-2 of the first-stage flue heat exchange module is directly or indirectly communicated with the flue gas inlet 22b-1 of the second-stage flue heat exchange module through a dust remover 60 or/and an induced draft fan 61, and the working medium water outlet 22b-4 of the second-stage flue heat exchange module is directly or indirectly communicated with the working medium water inlet 22a-3 of the first-stage flue heat exchange module.
The purpose of adopting the structure is mainly to match the relevant parameters of the flue heat exchanger with the parameters of the flue gas at the inlet of the dust remover. If the temperature of the working medium water at the working medium water inlet 22-3 of the flue heat exchanger is too low, the smoke temperature at the inlet of the dust remover 60 is too low, and the low-temperature corrosion of the dust remover is possibly caused; if the flue heat exchanger 22 recovers the waste heat of the flue gas, the low temperature corrosion of the dust remover can be caused when the flue heat exchanger outlet flue temperature is too low. In this case, the stack heat exchanger 22 is divided into a first stage stack heat exchange module 22a and a second stage stack heat exchange module 22b, and is disposed before and after the dust remover. The flue gas firstly passes through the first-stage flue heat exchange module 22a, then passes through a dust remover 60 or/and an induced draft fan 61, and then enters the second-stage flue heat exchange module 22b; the working medium water is heated by the second-stage flue heat exchange module 22b and then enters the first-stage flue heat exchange module 22a for continuous heating.
Fig. 4-2 is a schematic diagram of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 4-2, the main difference from fig. 4 is that the flue heat exchanger working fluid water outlet 22-4 is directly or indirectly connected with the generator high temperature heat source inlet 3-11, and the generator high temperature heat source outlet 3-12 is directly or indirectly connected with the flue heat exchanger working fluid water inlet 22-3.
The working process is as follows:
the working medium water from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source medium of the generator 3, enters the generator 3 through the high-temperature heat source inlet 3-11 of the generator, exchanges heat and cools down, flows out through the high-temperature heat source outlet 3-12 of the generator, returns to the working medium water inlet 22-3 of the flue heat exchanger, and is recycled. At this time, the efficiency of the absorption heat pump system may be low, but the working fluid water of the bypass economizer working fluid water outlet 15-4 may be more used for heat users. The other principle is the same as in fig. 4.
Fig. 4-3 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 4-3, the main difference between the two embodiments is that the generator 3 high temperature heat source channel is connected in series with the working fluid water channel between the flue heat exchanger working fluid water outlet 22-4 and the air supply heater working fluid water inlet 9-3, the flue heat exchanger working fluid water outlet 22-4 is directly or indirectly connected with the generator high temperature heat source inlet 3-11, the generator high temperature heat source outlet 3-12 is directly or indirectly connected with the air supply heater working fluid water inlet 9-3, and the air supply heater working fluid water outlet 9-4 is directly or indirectly connected with the flue heat exchanger working fluid water inlet 22-3.
The working process is as follows:
working medium water from a working medium water outlet 22-4 of the flue heat exchanger firstly enters the generator 3 as a high-temperature driving heat source medium to exchange heat and cool, then is used as a heating heat source to be sent to the air supply heater 9 to be heated and supplied, and returns to the flue heat exchanger 22 after exchanging heat and cooling with the air supply, so that the working medium water is recycled. Compared with fig. 4-2, the embodiment can more fully utilize the heat of the working medium water from the flue heat exchanger 22, and can also reduce the temperature of the working medium water at the working medium water inlet 22-3 of the flue heat exchanger and improve the heat exchange efficiency of the flue heat exchanger 22.
Fig. 4-4 are schematic structural views of another embodiment of the boiler flue gas waste heat recovery system of the present utility model.
As shown in fig. 4 to 4, the bypass economizer 15 is different from fig. 4 in that it includes a first stage bypass heat exchange module 15a and a second stage bypass heat exchange module 15b connected in series one after the other; the first-stage bypass heat exchange module is provided with a bypass economizer flue gas inlet 15-1, a first-stage bypass heat exchange module flue gas outlet 15a-2, a first-stage bypass heat exchange module working medium water inlet 15a-3 and a bypass economizer working medium water outlet 15-4; the second-stage bypass heat exchange module 15b is provided with a second-stage bypass heat exchange module smoke inlet 15b-1, a bypass economizer smoke outlet 15-2, a bypass economizer working medium water inlet 15-3 and a second-stage bypass heat exchange module working medium water outlet 15b-4; the first-stage bypass heat exchange module flue gas outlet 15a-2 is directly or indirectly communicated with the second-stage bypass heat exchange module flue gas inlet 15b-1, and the second-stage bypass heat exchange module working medium water outlet 15b-4 is simultaneously directly or indirectly communicated with the first-stage bypass heat exchange module working medium water inlet 15a-3 and the generator high-temperature heat source inlet 3-11; the high-temperature heat source outlet 3-12 of the generator is directly or indirectly communicated with the working medium water inlet 15-3 of the bypass economizer.
The working process is as follows:
the flue gas from the boiler flue gas outlet 1-3 passes through the first-stage bypass heat exchange module 15a and the second-stage bypass heat exchange module 15b in sequence, exchanges heat with working medium water, cools down and then is sent to the flue heat exchanger 22; the working medium water flows out through a working medium water outlet 15b-4 of the second-stage bypass heat exchange module after heat exchange and temperature rise of the second-stage bypass heat exchange module 15b and the flue gas, and then a part of the working medium water is sent to the first-stage bypass heat exchange module 15a to be subjected to further heat exchange and temperature rise of the flue gas with higher temperature, and then is sent to a heat user; part of the solution is used as a high-temperature driving heat source and enters the generator 3 through the generator high-temperature heat source inlet 3-11, the dilute absorbent solution from the absorber 2 in the generator 3 exchanges heat and cools down, and then flows out of the generator through the generator high-temperature heat source outlet 3-12 and returns to the second-stage bypass heat exchange module 15b for recycling. When a downstream generator is provided, such as a first generator, a second generator, etc., the high temperature driven heat source medium also enters the downstream generator through the generator 3 and exits through the generator high temperature heat source outlets 3-12, as follows.
The bypass economizer has the advantages that the working medium water in the middle tap (the working medium water outlet 15b-4 of the second-stage bypass heat exchange module) of the bypass economizer 15 is used as a high-temperature driving heat source of the generator, the temperature level is equivalent, the heat pump efficiency can be improved, and meanwhile, the high-end working medium water in the working medium water outlet 15-4 of the bypass economizer can be used for users with high temperature requirements, such as power generation.
Optionally, the working fluid water at the working fluid water outlet 15b-4 of the second-stage bypass heat exchange module is subjected to deoxygenation through a bypass header (not shown in the figure) or through a first bypass deoxygenator (not shown in the figure) or/and is boosted by a first bypass feed water pump 32C and then is sent to the first-stage bypass heat exchange module 15a to be further subjected to heat exchange with flue gas with higher temperature for temperature rise.
Fig. 5 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 5, on the basis of fig. 4 and 4-2, the bypass economizer working medium water outlet 15-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the bypass economizer working medium water inlet 15-3; the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; a first switching valve 15-14 is arranged on a diversion branch from a working medium water outlet 15-4 of the bypass economizer to a high-temperature heat source inlet 3-11 of the generator; a second switching valve 15-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 15-3 of the bypass economizer; a third switching valve 22-14 is arranged on a diversion branch from the flue heat exchanger working medium water outlet 22-4 to the generator high-temperature heat source inlet 3-11; a fourth switching valve 22-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 22-3 of the flue heat exchanger.
The working process is as follows:
the first switching valve 15-14 and the second switching valve 15-13 are opened, the third switching valve 22-14 and the fourth switching valve 22-13 are closed, and the high-temperature working medium water from the working medium water outlet 15-4 of the bypass economizer is used as a high-temperature driving heat source to be sent into the high-temperature heat source inlet 3-11 of the generator, is subjected to heat exchange with the absorbent in the generator 3 and is cooled, and then is returned to the working medium water inlet 15-3 of the bypass economizer through the high-temperature heat source outlet 3-12 of the generator for recycling. In this way, the absorption heat pump system has high working efficiency, the sent available heat is large, the outlet smoke temperature of the spray tower is low, and the absorption heat pump system can be used for heating the outside in heating seasons.
The first switching valve 15-14 and the second switching valve 15-13 are closed, the third switching valve 22-14 and the fourth switching valve 22-13 are opened, and the high-temperature working medium water from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source to be sent into the high-temperature heat source inlet 3-12 of the generator, is subjected to heat exchange with the absorbent in the generator 3 and is cooled, and then is returned to the working medium water inlet 22-3 of the flue heat exchanger through the high-temperature heat source outlet 3-12 of the generator for recycling. In this way, the working efficiency of the absorption heat pump system is reduced, the available heat sent is reduced, the smoke temperature of the outlet of the spray tower is reduced, and the temperature of the high-temperature working medium water at the working medium water outlet 15-4 of the bypass economizer can be used for other more valuable or needed purposes, such as power generation, and the method can be used in non-heating seasons. In addition, the environmental temperature in non-heating seasons is high, the smoke plume phenomenon of the chimney is weakened, and the influence of the rising of the smoke temperature at the outlet of the spray tower on the smoke plume phenomenon of the chimney is also weakened.
The heat source medium flow and the temperature of the high-temperature driving heat source medium supplied to the absorption heat pump are different in different seasons and different in time periods, for example, the heat source medium flow and the temperature of the high-temperature driving heat source medium supplied to the absorption heat pump are different in heat user demand in heating seasons, the high-temperature working medium water of the high-temperature driving heat source medium-bypass economizer working medium water outlet 15-4 can be adopted in heating seasons, the working efficiency of the absorption heat pump and the external heat supply quantity are improved, the working medium water of the other lower-temperature high-temperature driving heat source medium-flue heat exchanger working medium water outlet 22-4 can be adopted in other seasons, the working efficiency of the absorption heat pump and the external heat supply quantity are reduced, and the high-temperature working medium water of the high-temperature driving heat source medium-bypass working medium water outlet 15-4 can be used in other more valuable or required aspects, such as power generation. Therefore, the high-efficiency absorption heat pump system solves the problem of poor adaptability of the traditional absorption heat pump, and particularly, most of the absorption heat pumps are only used in heating seasons, and other seasons are idle in shutdown, so that investment is wasted.
The efficient absorption heat pump system has the advantages of strong adaptability, high flexibility and the like, can be normally used all the year round, can obtain more reasonable and effective utilization and value improvement of the waste heat of the flue gas, and can improve the investment and utilization value of equipment.
Of course, the mode of manually changing the source of the high-temperature driving heat source medium can be adopted according to actual needs or seasonal changes without arranging the switching valve.
Fig. 5-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 5-1, on the basis of fig. 4 and 4-3, the bypass economizer working medium water outlet 15-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the bypass economizer working medium water inlet 15-3; the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet 22-4 and the air supply heater working medium water inlet 9-3, the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the air supply heater working medium water inlet 9-3, and the air supply heater working medium water outlet 9-4 is directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; a first switching valve 15-14 is arranged on a diversion branch from a working medium water outlet 15-4 of the bypass economizer to a high-temperature heat source inlet 3-11 of the generator; a second switching valve 15-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 15-3 of the bypass economizer; a third switching valve 22-14 is arranged on a diversion branch from the flue heat exchanger working medium water outlet 22-4 to the generator high-temperature heat source inlet 3-11; a fifth switching valve 9-13 is arranged on a branch line from the generator high-temperature heat source outlet 3-12 to the air supply heater working medium water inlet 9-3, and a sixth switching valve 9-10 is arranged on a branch line from the flue heat exchanger working medium water outlet 22-4 to the air supply heater working medium water inlet 9-3.
The working process is as follows:
the first switching valve 15-14, the second switching valve 15-13 and the sixth switching valve 9-10 are opened, the third switching valve 22-14 and the fifth switching valve 9-13 are closed, high-temperature working medium water from the bypass economizer working medium water outlet 15-4 is used as a high-temperature driving heat source to be sent into the generator high-temperature heat source inlet 3-12, and after heat exchange and temperature reduction are carried out between the generator 3 and the absorbent, the high-temperature working medium water returns to the bypass economizer working medium water inlet 15-3 through the generator high-temperature heat source outlet 3-12 for recycling. In this way, the absorption heat pump system has high working efficiency, the sent available heat is large, the outlet smoke temperature of the spray tower is low, and the absorption heat pump system can be used for heating the outside in heating seasons.
The first switching valve 15-14, the second switching valve 15-13 and the sixth switching valve 9-10 are closed, the third switching valve 22-14 and the fifth switching valve 9-13 are opened, high-temperature working medium water from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source to be sent into the high-temperature heat source inlet 3-11 of the generator, exchanges heat with the absorbent in the generator 3 and cools down, flows out from the high-temperature heat source outlet 3-12 of the generator and is used as a heating heat source of the air supply heater 9, is sent into the air supply heater 9 through the working medium water inlet 9-3 of the air supply heater for heating and air supply, and returns to the working medium water inlet 15-3 of the flue heat exchanger after exchanging heat and cooling down, and is recycled. Compared with fig. 5, the embodiment can more fully utilize the heat of the working medium water from the flue heat exchanger 22, and can also reduce the temperature of the working medium water at the working medium water inlet 22-3 of the flue heat exchanger and improve the heat exchange efficiency of the flue heat exchanger 22.
Of course, the mode of manually changing the source of the high-temperature driving heat source medium can be adopted according to actual needs or seasonal changes without arranging the switching valve.
Fig. 6 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 6, on the basis of fig. 3, the efficient absorption heat pump system further comprises: a boiler 21, a bypass economizer 15, an air preheater 52, a flue heat exchanger 22, a desulfurizing tower 6, a spray tower 12, a chimney 7, a blower 8, and a blower heater 9; wherein,
the boiler 21 is provided with a fuel inlet 21-1, a boiler air supply inlet 21-2 and a boiler flue gas outlet 21-3;
the bypass coal-saving device 15 is provided with a bypass coal-saving device smoke inlet 15-1, a bypass coal-saving device smoke outlet 15-2, a bypass coal-saving device working medium water inlet 15-3 and a bypass coal-saving device working medium water outlet 15-4;
the air preheater 52 is provided with an air preheater flue gas inlet 52-1, an air preheater flue gas outlet 52-2, an air preheater air supply inlet 52-3, and an air preheater air supply outlet 52-4;
the flue heat exchanger 22 is provided with a flue heat exchanger flue gas inlet 22-1, a flue heat exchanger flue gas outlet 22-2, a flue heat exchanger working medium water inlet 22-3 and a flue heat exchanger working medium water outlet 22-4; optionally, the flue heat exchanger 22 is a dividing wall heat exchanger;
The desulfurizing tower 6 includes: a desulfurizing tower body 6-1 and a slurry circulating pump 6-2; the bottom of the desulfurizing tower body 6-1 is provided with a slurry pool 6-3; the lower part of the desulfurizing tower body 6-1 is provided with a desulfurizing tower flue gas inlet 6-5, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet 6-4; a desulfurizing tower spraying device 6-6 is arranged between the desulfurizing tower flue gas inlet 6-5 and the desulfurizing tower flue gas outlet 6-4, the desulfurizing tower spraying device 6-6 is directly or indirectly communicated with the slurry circulating pump 6-2, and the slurry circulating pump 6-2 is directly or indirectly communicated with the slurry pool 6-3; optionally, a desulfurizing tower demister 6-7 is arranged between the desulfurizing tower spraying device 6-6 and the desulfurizing tower flue gas outlet 6-4;
the spray tower 12 is provided with a spray tower flue gas inlet 12-1, a spray tower flue gas outlet 12-2, a spray tower heat medium water inlet 12-3 and a spray tower heat medium water outlet 12-4. The bottom of the spray tower 12 is provided with a spray tower water receiving device 12-5. A spray tower water distribution device 12-6 for heating medium water is arranged between the spray tower flue gas inlet 12-1 and the spray tower flue gas outlet 12-2. The spray tower water distribution device 12-6 is communicated with the spray tower heat medium water inlet 12-3, and the spray tower water receiving device 12-5 is communicated with the spray tower heat medium water outlet 12-4; optionally, the spray tower water distribution device 12-6 is a water distribution tank or a water distribution pipe or a spray device;
The blower 8 is provided with a blower inlet 8-1 and a blower outlet 8-2;
the air supply heater 9 is provided with an air supply heater air supply inlet 9-1, an air supply heater air supply outlet 9-1, an air supply heater working medium water inlet 9-4 and an air supply heater working medium water outlet 9-5;
the boiler flue gas outlet 21-3 communicates directly or indirectly with both the air preheater flue gas inlet 52-1 and the bypass economizer flue gas inlet 15-1; the air preheater flue gas outlet 52-2 and the bypass economizer flue gas outlet 15-2 are both in direct or indirect communication with the flue heat exchanger flue gas inlet 22-1; the flue gas outlet 22-2 of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet 6-5 of the desulfurizing tower; the flue gas outlet 6-4 of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet 12-1 of the spraying tower; the spray tower flue gas outlet 12-2 is directly or indirectly communicated with the chimney 7;
the blower outlet 8-2 is directly or indirectly communicated with the blower inlet 9-1 of the blower heater; the air supply outlet 9-2 of the air supply heater is directly or indirectly communicated with the air supply inlet 52-3 of the air preheater; the air preheater supply air outlet 52-4 communicates directly or indirectly with the boiler supply air inlet 21-2;
The working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet 22-3 of the flue heat exchanger; the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the air supply heater working medium water inlet 9-3;
the spray tower heating medium water outlet 12-4 is directly or indirectly communicated with the evaporator low-temperature heat source inlet 1-1; the low-temperature heat source outlet 1-2 of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet 12-3;
the flue heat exchanger working medium outlet 22-4 is directly or indirectly communicated with the downstream generator high-temperature heat source inlet 3-11-1, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3;
the working process is as follows:
fuel is sent into a hearth of the boiler 21 through a boiler fuel inlet 21-1, an air blower 8 sends air into the hearth of the boiler 21 through an air preheater 52 and a boiler air supply inlet 21-2, the fuel burns to release heat, and flue gas generated by combustion flows out of the boiler 21 through a boiler flue gas outlet 21-3; then a part of flue gas is sent into the air preheater 52 through the flue gas inlet 52-1 of the air preheater to heat the air sent from the air sending outlet 8-2 of the air sending machine, and the flue gas exchanges heat with the air sent by the air sending machine to cool and then flows out of the air preheater 52 through the flue gas outlet 52-2 of the air preheater; part of the flue gas enters a flue gas channel of the bypass economizer 15 through a flue gas inlet 15-1 of the bypass economizer, exchanges heat with working medium water in a working medium water channel of the bypass economizer 15, cools down, and flows out of the bypass economizer 15 through a flue gas outlet 15-2 of the bypass economizer; the flue gas from the air preheater flue gas outlet 52-2 and the flue gas from the bypass economizer flue gas outlet 15-2 enter the flue gas channel of the flue heat exchanger 22 directly or indirectly through other equipment (e.g., a dust collector or/and an induced draft fan) through the flue heat exchanger flue gas inlet 22-1, heat (including heating through heat exchanger tube walls or heat exchanger plate walls, or heating through heat exchanger tube walls or heat exchanger plate walls and an intermediate medium, etc. the same applies below) the working fluid water flowing through the flue heat exchanger working fluid water channel. When the flue heat exchanger 22 is a heat pipe heat exchanger (one of the partition wall heat exchangers), the heat exchange process is as follows: the flue gas flowing through the flue heat exchanger 22 flue gas channel transfers the heat of the flue gas to an intermediate medium, such as water, in the heat pipe through the heat pipe heat section pipe wall of the flue heat exchanger 22, the intermediate medium is heated and evaporated to be in a gaseous state under the vacuum condition in the heat pipe, and the gaseous intermediate medium in the heat pipe transfers the heat to the heat pipe cold section and transfers the heat to working medium water outside the heat pipe through the heat pipe cold section pipe wall. The flue gas flows out of the flue gas outlet 22-2 of the flue heat exchanger after being cooled, and then directly flows into the flue gas inlet 6-5 of the desulfurizing tower or indirectly flows into the desulfurizing tower 6 after passing through other equipment (such as a dust remover or/and a draught fan);
The flue gas enters the desulfurizing tower 6 from the desulfurizing tower flue gas inlet 6-5 and flows through the desulfurizing tower spraying device 6-6 from bottom to top, the desulfurizing slurry in the slurry pond 6-3 enters the desulfurizing tower spraying device 6-6 under the driving of the slurry circulating pump 6-2, the desulfurizing tower spraying device 6-6 sprays the desulfurizing slurry into the flue gas from top to bottom, the flue gas and the desulfurizing slurry exchange heat and transfer mass in countercurrent, the flue gas is optionally defogged by the desulfurizing tower defogger 6-7 in a saturated state or a near saturated state after heat exchange and desulfurization, and flows out of the desulfurizing tower 6 through the desulfurizing tower flue gas outlet 6-4,
the desulfurized saturated or nearly saturated flue gas enters the spray tower 12 through the spray tower flue gas inlet 12-1. The heat medium water from the low-temperature heat source outlet 1-2 of the evaporator is conveyed to the spray tower water distribution device 12-6 through the spray tower heat medium water inlet 12-3, the spray tower water distribution device 12-6 distributes the heat medium water into the flue gas, the flue gas and the heat medium water are subjected to mixed heat exchange in the spray tower 12, the saturated flue gas is further cooled, dehumidified and washed, and then the saturated flue gas is discharged into the atmosphere through the spray tower flue gas outlet 12-2 and the chimney 7.
Working medium water flows through a working medium water channel of the flue heat exchanger through a working medium water inlet 22-3 of the flue heat exchanger, the working medium water and flue gas absorb the waste heat of the flue gas through heat exchange to rise in temperature, then enters the working medium water channel of the air supply heater 9 through a working medium water outlet 22-4 of the flue heat exchanger and a working medium water inlet 9-3 of the air supply heater, the temperature of the working medium water is reduced after the working medium water heats air flowing through the air supply channel of the air supply heater 9, then flows out through a working medium water outlet 9-4 of the air supply heater, and then returns to the working medium water inlet 22-3 of the flue heat exchanger for recycling; the air supply enters an air supply channel of the air supply heater 9 through an air supply heater air supply inlet 9-1 under the drive of an air blower 8, is heated and warmed by working medium water from a flue heat exchanger 22, flows out of the air supply heater 9 through an air supply heater air supply outlet 9-2, enters an air preheater 52 through an air preheater air supply inlet 52-3, is further heated and warmed by flue gas from a boiler flue gas outlet 21-3, flows out of the air preheater 52 through an air preheater air supply outlet 52-4, and enters a boiler furnace through a boiler air supply inlet 21-2;
The sensible heat of flue gas, the vaporization latent heat of water vapor condensation and the reaction heat of the desulfurization process are absorbed by the heat medium water in the spray tower 12, the temperature is raised, the heat medium water is collected by the spray tower water receiving device 12-5, is directly or indirectly sent to the low-temperature heat source inlet 1-1 of the evaporator through the spray tower heat medium water outlet 12-4, enters the evaporator heat transfer tube 1-6, exchanges heat with the refrigerant water conveyed from the condenser 4 or/and the generator 3, flows out of the evaporator 1 through the evaporator low-temperature heat source outlet 1-2 after being cooled, returns to the spray tower heat medium water inlet 12-3, enters the spray tower water distribution device 12-6, and is recycled.
The working medium water with higher temperature from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source medium, enters the second generator 32 through the high-temperature heat source inlet 3-11-1 of the downstream generator, exchanges heat with the dilute absorbent solution from the absorber 2, cools down, flows out of the generator 3 through the high-temperature heat source outlet 3-12 of the generator, returns to the working medium water inlet 22-3 of the flue heat exchanger, and is recycled.
The low-temperature heat energy of the heat medium water from the spray tower heat medium water outlet 12-4 is converted into the heat energy with higher temperature of the cold water under the drive of the high-temperature driving heat source medium from the flue heat exchanger 22.
Other working processes are basically the same as those of fig. 4, and will not be described again.
The main use of this embodiment is that when the external heat user load is low or the high temperature working fluid water of the bypass economizer working fluid water outlet 15-4 needs to be used for other purposes, such as non-heating seasons, the external heat load is less, the high temperature working fluid water of the bypass economizer working fluid water outlet 15-4 can be used for heating the working fluid water from the steam turbine system, and the working fluid water of the flue heat exchanger working fluid water outlet 22-4 is used for the high temperature driving heat source medium of the generator. However, since the temperature of the high-temperature heat source medium from the flue heat exchanger 22 is low, if the medium is sent to the generator high-temperature heat source inlet 3-11, the system can not normally operate, and at the moment, the medium is sent to the downstream generator high-temperature heat source inlet 3-11-1, so that the normal operation of one or a plurality of downstream generators with low requirements on the high-temperature driving heat source temperature can be ensured. Therefore, the utility model can ensure the normal operation of the system by adjusting the input interface of the high-temperature driving heat source medium of the generator according to the change of the heat demand of the system heat user.
The number of the spray tower heating medium water outlets 12-4 can be one or more; the spray tower heating medium water inlet 12-3 may be one or more.
Optionally, a spray tower demister (not shown in the figure) is arranged on a flue gas channel between the spray tower water distribution device 12-6 and the chimney 7. The purpose is to further purify the flue gas entering the chimney through a spray tower demister.
Optionally, a heat medium water circulating pump (not shown in the figure) is arranged on the heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet 12-4 or the spray tower heat medium water inlet 12-3. The purpose is to provide flowing power for the heat medium water through a heat medium water circulating pump.
Optionally, a high-temperature heat source water pump (not shown in the figure) is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11 or the generator high-temperature heat source outlet 3-12. The purpose is to provide flowing power for the high-temperature driving heat source through the high-temperature heat source water pump.
Optionally, a dust collector or/and an induced draft fan (not shown in the figure) is connected in series to the flue heat exchanger flue gas inlet 22-1 or the flue heat exchanger flue gas outlet 22-2. The flue heat exchanger may be connected in series at any position of the flue gas channel between the air preheater and the desulfurizing tower. The dust remover can remove part of dust in the flue gas; the induced draft fan is used for sucking the flue gas in the boiler furnace and sending the flue gas to a chimney.
Optionally, the spray tower heating medium water inlet 12-3 communicates directly or indirectly with raw water source means 35 and the spray tower heating medium water outlet communicates directly or indirectly with raw water user 36. Raw water from the raw water source device 35 enters the spray tower water distribution device 12-6 through the spray tower heat medium water inlet 12-3, the raw water is heated by utilizing flue gas of the spray tower, and the heated raw water is sent to the raw water user 36 through the spray tower heat medium water outlet 12-4 so as to fully utilize the flue gas waste heat and reduce the energy consumption.
Optionally, the bypass economizer working medium water outlet 15-4 is also in communication with a hot user (not shown in the figures).
Optionally, the flue heat exchanger 22 is a tubular heat exchanger or a heat pipe heat exchanger;
optionally, the flue heat exchanger 22 is a series connection of a heat pipe heat exchanger and a tubular heat exchanger, and the heat pipe heat exchanger is arranged at the inlet of the flue heat exchanger 22, that is, at the windward position of the flue gas flow direction. The leakage quantity of the heat pipe heat exchanger after abrasion leakage is only the water quantity in a single heat pipe, so that a large quantity of leakage is avoided, and large-area ash sticking and blocking are avoided.
Optionally, a first desulfurizing tower (not shown in the figure) is connected in series on a flue which is directly or indirectly communicated with the desulfurizing tower flue gas outlet 6-5 or the desulfurizing tower flue gas outlet 6-4;
Optionally, the bypass economizer 15 has two or more heat exchange modules and a series/parallel switching structure thereof, and the connection manner of the heat exchange modules of the bypass economizer 15 can be switched. If the high-temperature driving heat source is required to have high temperature, adopting a serial structure, wherein the flow rate of the working medium water in the working medium water channel of the bypass economizer 15 is small; if the temperature of the high-temperature driving heat source is low, a parallel structure is adopted, and at the moment, the flow rate of the working medium water in the working medium water channel of the bypass economizer 15 is large.
Optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet 22-3 of the flue heat exchanger or the working medium water outlet 22-4 of the flue heat exchanger;
optionally, a bypass feed pump or/and a bypass deaerator or/and a buffer water tank (not shown in the figure) is/are arranged on the working fluid water channel directly or indirectly communicated with the working fluid water inlet 15-3 of the bypass economizer. The bypass water supply pump is used for driving working medium water to enter the bypass economizer 15 and normally flow in the system, and meets the requirement of the pressure of the working medium water of the system; the bypass deaerator is used for removing oxygen in the working medium water so as to prevent the working medium water from corroding a working medium water channel; the buffer water tank provides buffer capacity for the bypass feed pump, and ensures the operation safety of the water pump.
Optionally, a cold water pump is connected in series with a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet.
Optionally, the high-temperature heat source outlet 3-12 of the generator is directly or indirectly communicated with the working medium water inlet 15-3 of the bypass economizer through a cooler; optionally, the cooler is a generator of other absorption heat pumps or other blow heaters (not shown).
Fig. 6-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 6-1, the main difference from fig. 6 is that the second generator 32 high temperature heat source channel is connected in series with the working fluid water channel between the flue heat exchanger working fluid water outlet 22-4 and the air supply heater working fluid water inlet 9-3, the flue heat exchanger working fluid water outlet 22-4 is directly or indirectly connected with the downstream generator high temperature heat source inlet 3-11-1, the generator high temperature heat source outlet 3-12 is directly or indirectly connected with the air supply heater working fluid water inlet 9-3, and the air supply heater working fluid water outlet 9-4 is directly or indirectly connected with the flue heat exchanger working fluid water inlet 22-3.
The working process is as follows:
working medium water from the working medium water outlet 22-4 of the flue heat exchanger is firstly used as a high-temperature driving heat source medium to enter the second generator 32 for heat exchange and cooling, then is used as a heating heat source to be sent to the air supply heater 9 for heating and air supply, and returns to the flue heat exchanger 22 for continuous recycling after heat exchange and cooling with the air supply. Compared with fig. 6, the embodiment can more fully utilize the heat of the working medium water from the flue heat exchanger 22, and can also reduce the temperature of the working medium water at the working medium water inlet 22-3 of the flue heat exchanger and improve the heat exchange efficiency of the flue heat exchanger 22.
Fig. 6-2 is a schematic structural view of another embodiment of the boiler flue gas waste heat recovery system of the present utility model.
As shown in fig. 6-2, the bypass economizer 15 is different from fig. 6 in that the bypass economizer includes a first stage bypass heat exchange module 15a and a second stage bypass heat exchange module 15b connected in series one after the other; the first-stage bypass heat exchange module is provided with a bypass economizer flue gas inlet 15-1, a first-stage bypass heat exchange module flue gas outlet 15a-2, a first-stage bypass heat exchange module working medium water inlet 15a-3 and a bypass economizer working medium water outlet 15-4; the second-stage bypass heat exchange module 15b is provided with a second-stage bypass heat exchange module smoke inlet 15b-1, a bypass economizer smoke outlet 15-2, a bypass economizer working medium water inlet 15-3 and a second-stage bypass heat exchange module working medium water outlet 15b-4; the first-stage bypass heat exchange module flue gas outlet 15a-2 is directly or indirectly communicated with the second-stage bypass heat exchange module flue gas inlet 15b-1, and the second-stage bypass heat exchange module working medium water outlet 15b-4 is simultaneously directly or indirectly communicated with the first-stage bypass heat exchange module working medium water inlet 15a-3 and the downstream generator high-temperature heat source inlet 3-11-1; the high-temperature heat source outlet 3-12 of the generator is directly or indirectly communicated with the working medium water inlet 15-3 of the bypass economizer.
The working process is as follows:
the flue gas from the boiler flue gas outlet 1-3 passes through the first-stage bypass heat exchange module 15a and the second-stage bypass heat exchange module 15b in sequence, exchanges heat with working medium water, cools down and then is sent to the flue heat exchanger 22; the working medium water flows out through a working medium water outlet 15b-4 of the second-stage bypass heat exchange module after heat exchange and temperature rise of the second-stage bypass heat exchange module 15b and the flue gas, and then a part of the working medium water is sent to the first-stage bypass heat exchange module 15a to be subjected to further heat exchange and temperature rise of the flue gas with higher temperature, and then is sent to a heat user; part of the heat is used as a high-temperature driving heat source, enters the second generator 32 through the high-temperature heat source inlet 3-11-1 of the downstream generator, exchanges heat with the dilute absorbent solution from the absorber 2 in the second generator 32, cools down, flows out of the generator 3 through the high-temperature heat source outlet 3-12 of the generator, and returns to the second-stage bypass heat exchange module 15b for recycling.
The bypass economizer has the advantages that the working medium water in the middle tap (the working medium water outlet 15b-4 of the second-stage bypass heat exchange module) of the bypass economizer 15 is used as a high-temperature driving heat source of the generator, the temperature level is equivalent, the heat pump efficiency can be improved, and meanwhile, the high-end working medium water in the working medium water outlet 15-4 of the bypass economizer can be used for users with high temperature requirements, such as power generation.
Optionally, the working fluid water at the working fluid water outlet 15b-4 of the second-stage bypass heat exchange module is subjected to heat exchange and temperature rise with the flue gas at a higher temperature by passing through a bypass header (not shown in the figure) or by passing through the first bypass deaerator 30C for deaeration or/and passing through the first bypass feed pump 32C for boosting, and then is sent to the first-stage bypass heat exchange module 15 a.
Fig. 7 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 7, on the basis of fig. 6, the bypass economizer working medium water outlet 15-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the bypass economizer working medium water inlet 15-3; the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the downstream generator high-temperature heat source inlet 3-11-1, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; a first switching valve 15-14 is arranged on a diversion branch from a working medium water outlet 15-4 of the bypass economizer to a high-temperature heat source inlet 3-11 of the generator; a second switching valve 15-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 15-3 of the bypass economizer; a third switching valve 22-14 is arranged on a branch line from the working medium water outlet 22-4 of the flue heat exchanger to the high-temperature heat source inlet 3-11-1 of the downstream generator; a fourth switching valve 22-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 22-3 of the flue heat exchanger.
The working process is as follows:
the first switching valve 15-14 and the second switching valve 15-13 are opened, the third switching valve 22-14 and the fourth switching valve 22-13 are closed, and the high-temperature working medium water from the bypass economizer working medium water outlet 15-4 is used as a high-temperature driving heat source to be sent into the generator high-temperature heat source inlet 3-11, cooled in the generator 3 and returned to the bypass economizer working medium water inlet 15-3 through the generator high-temperature heat source outlet 3-12 for recycling. In this way, the absorption heat pump system has high working efficiency, the sent available heat is large, the outlet smoke temperature of the spray tower is low, and the absorption heat pump system can be used for heating the outside in heating seasons.
The first switching valve 15-14 and the second switching valve 15-13 are closed, the third switching valve 22-14 and the fourth switching valve 22-13 are opened, and high-temperature working medium water from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source to be sent into the high-temperature heat source inlet 3-11-1 of the downstream generator, and after the downstream generator 32 exchanges heat and cools, the high-temperature working medium water returns to the working medium water inlet 15-3 of the flue heat exchanger through the high-temperature heat source outlet 3-12 of the generator for recycling. Under the general condition, the temperature of the working medium water at the working medium water outlet 22-4 of the flue heat exchanger is lower than that of the working medium water at the working medium water outlet 15-4 of the bypass economizer, and the working medium water deviates greatly from the temperature of the high-temperature driving heat source designed for the upstream generator, if the working medium water is sent to the high-temperature heat source inlet 3-11 of the generator, the system can not normally operate, and at the moment, the working medium water is sent to the high-temperature heat source inlet 3-11-1 of the downstream generator, so that the normal operation of the part of the generator with low requirement on the temperature of the high-temperature driving heat source can be ensured. In this way, the working efficiency of the absorption heat pump system is reduced, the available heat delivered is reduced, the cooling amplitude of the spray tower outlet is reduced, but the high temperature working fluid water of the bypass economizer working fluid water outlet 15-4 can be used for other more valuable or needed purposes, such as power generation, and the method can be used in non-heating seasons. In addition, the environmental temperature in non-heating seasons is high, the smoke plume phenomenon of the chimney is weakened, and the influence of the rising of the smoke temperature at the outlet of the spray tower on the smoke plume phenomenon of the chimney is also weakened.
The heat source medium flow and temperature are different in the heat user demand of the absorption heat pump in different seasons and different time periods, for example, the heat user demand of the absorption heat pump is large in heating season, the heat source medium can be driven at high temperature in other seasons with small heating season, the working efficiency and external heat supply quantity of the absorption heat pump can be improved, the heat source medium can be driven at other lower temperature in other seasons, the working efficiency and external heat supply quantity of the absorption heat pump are reduced, and the high-temperature working medium water of the working medium outlet 15-4 of the bypass economizer with high temperature can be used for other more valuable or needed aspects, such as power generation. Therefore, the high-efficiency absorption heat pump system solves the problem of poor adaptability of the traditional absorption heat pump, and particularly, most of the absorption heat pumps are only used in heating seasons, and other seasons are idle in shutdown, so that investment is wasted. The efficient absorption heat pump system has the advantages of strong adaptability and high flexibility, can be normally used all the year round in all seasons, can improve the equipment investment utilization value, and can more reasonably and effectively fully utilize the waste heat of the flue gas and improve the value.
Of course, the mode of manually changing the source of the high-temperature driving heat source medium can be adopted according to actual needs or seasonal changes without arranging the switching valve.
Fig. 7-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 7-1, on the basis of fig. 4 and 6-1, the bypass economizer working medium water outlet 15-4 is directly or indirectly communicated with the generator high-temperature heat source inlet 3-11, and the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the bypass economizer working medium water inlet 15-3; the downstream generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet 22-4 and the air supply heater working medium water inlet 9-3, the flue heat exchanger working medium water outlet 22-4 is directly or indirectly communicated with the downstream generator high-temperature heat source inlet 3-11-1, the generator high-temperature heat source outlet 3-12 is directly or indirectly communicated with the air supply heater working medium water inlet 9-3, and the air supply heater working medium water outlet 9-4 is directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; a first switching valve 15-14 is arranged on a diversion branch from a working medium water outlet 15-4 of the bypass economizer to a high-temperature heat source inlet 3-11 of the generator; a second switching valve 15-13 is arranged on a diversion branch from the high-temperature heat source outlet 3-12 of the generator to the working medium water inlet 15-3 of the bypass economizer; a third switching valve 22-14 is arranged on a branch line from the working medium water outlet 22-4 of the flue heat exchanger to the high-temperature heat source inlet 3-11-1 of the downstream generator; a fifth switching valve 9-13 is arranged on a branch line from the generator high-temperature heat source outlet 3-12 to the air supply heater working medium water inlet 9-3, and a sixth switching valve 9-10 is arranged on a branch line from the flue heat exchanger working medium water outlet 22-4 to the air supply heater working medium water inlet 9-3.
The working process is as follows:
the first switching valve 15-14, the second switching valve 15-13 and the sixth switching valve 9-10 are opened, the third switching valve 22-14 and the fifth switching valve 9-13 are closed, high-temperature working medium water from the bypass economizer working medium water outlet 15-4 is used as a high-temperature driving heat source to be sent into the generator high-temperature heat source inlet 3-11, and after heat exchange and temperature reduction are carried out in the generator 3 with absorbent solution, the high-temperature working medium water returns to the bypass economizer working medium water inlet 15-3 through the generator high-temperature heat source outlet 3-12 for recycling. In this way, the absorption heat pump system has high working efficiency, the sent available heat is large, the outlet smoke temperature of the spray tower is low, and the absorption heat pump system can be used for heating the outside in heating seasons.
The first switching valve 15-14, the second switching valve 15-13 and the sixth switching valve 9-10 are closed, the third switching valve 22-14 and the fifth switching valve 9-13 are opened, high-temperature working medium water from the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source to be sent into the high-temperature heat source inlet 3-11-1 of the downstream generator, heat exchange and cooling are carried out between the downstream generator 32 and absorbent solution, and then the absorbent solution flows out through the high-temperature heat source outlet 3-12 of the generator, is used as a heating heat source of the air supply heater 9, is sent into the air supply heater 9 through the working medium water inlet 9-3 of the air supply heater to heat and supply air, and returns to the working medium water inlet 15-3 of the flue heat exchanger after heat exchange and cooling, and is recycled. Compared with fig. 7, the embodiment can more fully utilize the heat of the working medium water from the flue heat exchanger 22, and can also reduce the temperature of the working medium water at the working medium water inlet 22-3 of the flue heat exchanger and improve the heat exchange efficiency of the flue heat exchanger 22.
Of course, the mode of manually changing the source of the high-temperature driving heat source medium can be adopted according to actual needs or seasonal changes without arranging the switching valve.
Fig. 8 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 8, on the basis of fig. 4, the absorber cold water outlet 2-2 is also directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; the flue heat exchanger working medium water outlet 22-4 is also directly or indirectly communicated with a heat user.
The working process is as follows:
the part of cold water heated by the absorber 2 is split into the working medium water inlet 22-3 of the flue heat exchanger, and after being heated by the flue heat exchanger 22 together with the working medium water of the working medium water outlet 9-4 of the air supply heater, part of the cold water is sent to the working medium water inlet 9-3 of the air supply heater for heating and air supply, and the other part of the cold water is sent to or used by a heat user.
Because the efficient absorption heat pump system of the utility model adopts a multi-effect generator and even further adopts a downstream generator, the same high-temperature heat source heat can drive to separate and regenerate more concentrated absorbent solution for absorbing and extracting the heat of a low-temperature heat source, but the refrigerant water vapor generated by the last effect generator in each generator is sent to the condenser 4 for heating cold water from the absorber 2, the high-temperature driving heat source of the other effect generators is used for heating the refrigerant water vapor generated by the dilute absorbent solution and is basically used as the high-temperature driving heat source of the next effect generator for heating the dilute absorbent solution, and the heat exchange, cooling and evaporation latent heat release are condensed into the refrigerant water and then sent to the evaporator 1 (except for a small part of the refrigerant water which is optionally sent to the evaporator 1 after passing through the condenser 4), so that the refrigerant water vapor entering the condenser 4 is reduced. For this purpose, cold water heated by the absorber 2 is split off to a part and sent to the flue heat exchanger 22 for further heating and then to the hot user. Therefore, the heat of a low-temperature heat source absorbed by the absorption heat pump is increased by utilizing each effect generator and absorber of each generator, and the temperature of cold water sent by the absorption heat pump can be ensured so as to meet the heat consumption requirement and the heat consumption requirement of heat users. In addition, the flue gas temperature of the flue gas outlet 52-2 of the air preheater and the working medium water temperature of the working medium water outlet 22-4 of the flue heat exchanger can be adjusted by adjusting the flow rate ratio of the working medium water flowing to the air supply heater 9 and the heat user or/and the bypass flue gas flow of the bypass economizer 15, so that the water temperature sent to the heat user, the high-temperature driving heat source temperature from the bypass economizer and the efficiency of the absorption heat pump can be adjusted, the requirements of the heat user can be better met, and the utilization efficiency of the flue gas waste heat can be improved.
Fig. 8-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 8-1, on the basis of fig. 4, the condenser cooling water outlet 4-2 is also directly or indirectly communicated with the flue heat exchanger working medium water inlet 22-3; the flue heat exchanger working medium water outlet 22-4 is also directly or indirectly communicated with a heat user.
The working process is as follows:
the water is heated by the absorber 2 and the condensed water 4 and then sent to the working medium water inlet 22-3 of the flue heat exchanger, and the working medium water together with the working medium water outlet 9-4 of the air supply heater is heated by the flue heat exchanger 22, and then part of the water is sent to the working medium water inlet 9-3 of the air supply heater for heating and air supply, and the other part of the water is sent to a heat user for use.
Unlike fig. 8, this embodiment delivers cold water from the condenser cooling water outlet 4-2 to the flue heat exchanger 22 for reheating and then to the hot user. In contrast to fig. 8, in the present embodiment, the cold water is heated by the refrigerant steam from the generator and then sent to the flue heat exchanger for heating, and the heat exchange efficiency of the system is reduced from the standpoint of heat transfer since the refrigerant steam from the generator is less hot and has a higher temperature, that is, the cold water having a lower temperature but a higher flow rate is heated by the heat source having a higher temperature but less heat.
Fig. 9 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 9, on the basis of fig. 4, the high-efficiency absorption heat pump system is further provided with a first flue heat exchanger 5; the first flue heat exchanger 5 is provided with a first flue heat exchanger flue gas inlet 5-1, a first flue heat exchanger flue gas outlet 5-2, a first flue heat exchanger working medium water inlet 5-3 and a first flue heat exchanger working medium water outlet 5-4; the flue gas outlet 22-2 of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet 5-1 of the first flue heat exchanger; the flue gas outlet 5-2 of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet 6-5 of the desulfurizing tower; the first flue heat exchanger 5 is a dividing wall type heat exchanger; the absorber cold water outlet 2-2 is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger;
The working process is as follows:
the cold water heated by the absorber 2 is partially split into a working medium water inlet 5-3 of the first flue heat exchanger, and is heated by the flue gas of the first flue heat exchanger 5 and then sent to a heat user for use.
Because the efficient absorption heat pump system of the utility model adopts the multi-effect generator and even further adopts the downstream generator, the same high-temperature heat source heat can drive and separate more concentrated absorbent solution for absorbing and extracting the heat of a low-temperature heat source by the absorber 2, but the refrigerant water vapor generated by the last effect generator in each generator is sent to the condenser 4 for heating cold water from the absorber 2, the high-temperature driving heat source of the other effect generators is used for heating the refrigerant water vapor generated by the dilute absorbent solution and is basically used as the high-temperature driving heat source of the next effect generator for heating the dilute absorbent solution, and the refrigerant water vapor which is sent to the evaporator 1 after heat exchange, temperature reduction and condensation (except for a small part of refrigerant water which is optionally sent to the evaporator 1 after passing through the condenser 4) is reduced. For this purpose, cold water heated by the absorber 2 is split off to a part and sent to the first flue heat exchanger 5 for further heating and then sent to the hot user for use. Therefore, the heat of a low-temperature heat source absorbed by the absorption heat pump is increased by utilizing each effect generator and absorber of each generator, and the temperature of cold water sent by the absorption heat pump can be ensured so as to meet the heat consumption requirement and the heat consumption requirement of heat users.
With respect to fig. 8, this embodiment has no direct effect on the operation of the blast heater, but the system adds equipment.
Fig. 9-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 9-1, the difference from fig. 9 is that the condenser cooling water outlet 4-2 is directly or indirectly connected to the first flue heat exchanger working fluid water inlet 5-3.
The working process is as follows:
the cold water heated by the absorber 2 and the condensed water 4 is sent to the working medium water inlet 5-3 of the first flue heat exchanger, and is sent to a heat user for use after being heated by the first flue heat exchanger 5.
The difference from fig. 9 is that the present embodiment sends cold water from the condenser cooling water outlet 4-2 to the first flue heat exchanger 5 for reheating and then to the heat consumer. In contrast to fig. 9, in the present embodiment, the refrigerant steam from the generator is used for heating and then sent to the first flue heat exchanger for heating. The heat utilization efficiency of the refrigerant water vapor from the generator is reduced due to the fact that the heat of the refrigerant water vapor is less and the temperature is higher, namely, the heat source with higher temperature and less heat is used for heating the cold water with lower temperature and larger flow, but the system is simple.
Fig. 10 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 10, on the basis of fig. 4-2, the high-efficiency absorption heat pump system is further provided with a first air supply heater 80; the first air supply heater 80 is provided with a first air supply heater air supply inlet 80-1, a first air supply heater air supply outlet 80-2, a first air supply heater cold water inlet 80-3 and a first air supply heater cold water outlet 80-4; the air supply channel of the first air supply heater 80 is connected in series with the air channel of the blower air supply inlet 8-1 or the blower air supply outlet 8-2 which is directly or indirectly communicated, and the air supply inlet 80-1 of the first air supply heater is directly or indirectly communicated with the atmosphere; the first air supply heater air supply outlet 80-2 is directly or indirectly communicated with the air supply heater air supply inlet 9-1; the first air supply heater cold water inlet 80-3 is directly or indirectly communicated with the condenser cooling water outlet 4-2; the first supply air heater cold water outlet 80-4 communicates directly or indirectly with the absorber cold water inlet 2-1.
The working process is as follows:
the cold water from the condenser cooling water outlet 4-2 is sent to the first air supply heater cold water inlet 80-3 to enter the first air supply heater 80 cold water channel, and after the air supply flowing through the first air supply heater 80 air supply channel is heated, the air supply is sent back to the absorber cold water inlet 2-1 through the first air supply heater cold water outlet 80-4. The other working processes are basically the same as those of fig. 4-2, and will not be described again.
Working medium for heat exchanger by utilizing fluePart of working medium water at the water outlet 22-4 is used as a high-temperature driving heat source, the heat quantity is set as Qg, the heat quantity of a low-temperature heat source of low-temperature heat medium water from the spray tower 12 is absorbed by the first type of absorption heat pump, and the heat quantity is set as Q d The medium temperature heat converted into the condenser cooling water outlet 4-2 is set as Q Z Q is known according to the working principle of the first type of absorption heat pump Z ＝Qg+Q d . This heat is transferred to the air supply through the first air supply heater 80 and then enters the air preheater 52, and when the smoke temperature of the air preheater smoke outlet 52-2 is kept unchanged and the air supply temperature of the air preheater air supply outlet 52-4 is kept unchanged and the secondary factors such as heat dissipation are ignored, the bypass smoke flow of the bypass economizer 15 can be increased, and the heat of this part of smoke is Q Z ＝Qg+Q d That is, the heat energy Qg of the medium-temperature flue gas (high-temperature driving heat source) from the flue heat exchanger 22 and the low-grade heat energy Q of the saturated flue gas which is difficult to use after desulfurization from the spray tower 12 are converted into heat energy Qg of the absorption heat pump (including the evaporator 1, the absorber 2, the generator 3, the condenser 4, and the like), the spray tower 12, the first air supply heater 80, the air preheater 52, and the bypass economizer 15 d High-temperature heat energy Q converted into flue gas of bypass economizer flue gas inlet 15-1 Z ＝Qg+Q d And then the high-temperature working medium water heat energy is converted into the bypass economizer working medium water outlet 15-4, so that the high-temperature working medium water heat energy can be used for heat users with high heat energy quality, such as steam turbine power generation, and the energy-saving efficiency can be improved. The method can be used for non-heating seasons, and when no heating requirement exists outside the system, the low-grade flue gas waste heat of the air preheater outlet and the low-grade flue gas waste heat of the desulfurized saturated flue gas which is difficult to utilize can be converted into high-temperature working medium water heat energy of the bypass economizer working medium water outlet 15-4 for power generation or other purposes.
Fig. 10-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 10-1, the high-efficiency absorption heat pump system is also provided with a first air supply heater 80 as in fig. 10, on the basis of fig. 4. The difference from fig. 10 is that the high temperature driving heat source of the generator employs the working fluid water of the bypass economizer working fluid water outlet 15-4. Working medium water by using bypass economizerPart of the working medium water at the outlet 15-4 is used as a high-temperature driving heat source, the heat quantity is set as Qg, and the heat quantity of a low-temperature heat source of low-temperature heat medium water from the spray tower 12 is absorbed by an absorption heat pump and is set as Q d The medium temperature heat converted into the condenser cooling water outlet 4-2 is set as Q Z Q is known according to the working principle of the first type of absorption heat pump Z ＝Qg+Q d . This heat is transferred to the air supply through the first air supply heater 80 and then enters the air preheater 52, and when the temperature of the flue gas at the flue gas outlet 52-2 of the air preheater and the air supply temperature at the air supply outlet 52-4 of the air preheater are kept unchanged, the bypass flue gas flow rate of the bypass economizer 15 can be increased with equal heat, and the heat of this portion of flue gas is Q Z ＝Qg+Q d That is, the low-grade heat energy of saturated flue gas which is difficult to utilize after desulfurization from the spray tower 12 is converted into high-temperature heat energy of the flue gas by the absorption heat pump (comprising the evaporator 1, the absorber 2, the generator 3, the condenser 4 and the like), the spray tower 12, the first air supply heater 80, the air preheater 52, the bypass economizer 15 and the working medium water of the bypass economizer working medium water outlet 15-4 as a high-temperature driving heat source.
Optionally, a cold water pump (not shown) is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet 2-1 of the absorber or the cold water outlet 4-2 of the condenser.
The first supply air heater 80 is a dividing wall type heat exchanger.
Fig. 11 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 11, on the basis of fig. 4, the high-efficiency absorption heat pump system is further provided with a second air supply heater 100; the second air supply heater 100 is provided with a second air supply heater air supply inlet 100-1, a second air supply heater air supply outlet 100-2, a second air supply heater heat medium water inlet 100-3 and a second air supply heater heat medium water outlet 100-4; the air supply channel of the second air supply heater 100 is connected in series with the air channel of the blower air supply inlet 8-1 or the blower air supply outlet 8-2 which is directly or indirectly communicated, and the air supply inlet 100-1 of the second air supply heater is directly or indirectly communicated with the atmosphere; when the first air supply heater 80 is provided, the second air supply heater air supply outlet 100-2 is directly or indirectly communicated with the first air supply heater air supply inlet 80-1; when the first air supply heater 80 is not provided, the second air supply heater air supply outlet 100-2 is directly or indirectly communicated with the air supply heater air supply inlet 9-1; the second air supply heater heat medium water inlet 100-3 is directly or indirectly communicated with the spray tower heat medium water outlet 12-4; the second air supply heater heat medium water outlet 100-4 is directly or indirectly communicated with the spray tower heat medium water inlet 12-3.
The working process is as follows:
the heat medium water from the spray tower heat medium water outlet 12-4 is directly or indirectly sent to the second air supply heater heat medium water inlet 100-3, enters the heat medium water channel of the second air supply heater 100, and the air supply (air) enters the air supply channel of the second air supply heater 100 through the second air supply heater air supply inlet 100-1 under the driving of the blower 8, the temperature of the heat medium water in the heat medium water channel of the second air supply heater 100 is reduced after the air supply of the air supply channel of the second air supply heater 100 is heated, and then flows out through the heat medium water outlet 100-4 of the second air supply heater, returns to the spray tower heat medium water inlet 12-3 for recycling. The air with the increased temperature is fed to the furnace of the boiler 21 through the air preheater air supply outlet 52-4 after further heating up sequentially through the first air supply heater 80 (if any), the air supply heater 9 and the air preheater 52. When the heat transferred to the air supply through the second air supply heater 100 is ignored and finally distributed to the heat and other secondary factors entering the hearth of the boiler 21, the heat transferred to the air supply by the second air supply heater 100 is converted into the equal heat to increase the temperature of the flue gas outlet 52-2 of the air preheater or increase the bypass flue gas flow of the bypass economizer 15, namely, the working medium water heat of the working medium water outlet 22-4 of the flue heat exchanger or the working medium water heat of the working medium water outlet 15-4 of the bypass economizer is increased, so that the low-grade heat energy of the saturated flue gas after desulfurization is converted into the equal heat high-grade water heat energy through the spray tower 12, the second air supply heater 100, the air preheater 52, the flue heat exchanger 22 or the bypass economizer 15, and the utilization value and utilization efficiency of the heat energy can be improved. The heat transferred to the air supplied by the second air supply heater 100 can be controlled by means of adjusting the bypass flue gas flow entering the bypass economizer flue gas inlet 15-1, and the like, so that the ratio of the flue gas temperature rise of the air preheater flue gas outlet 52-2 to the bypass flue gas flow increase of the bypass economizer 15 is controlled, namely, the ratio of the working medium water heat and temperature increase of the flue heat exchanger working medium water outlet 22-4 to the ratio of the working medium water heat and temperature increase of the bypass economizer working medium water outlet 15-4 are controlled. The energy saving effect is better when the heat transferred to the air supply through the second air supply heater 100 is counted up and finally distributed into the furnace of the boiler 21.
Further, the heat energy is used as a high-temperature driving heat source medium of the generator and is input into the generator (the generator 3 and/or a generator downstream of the generator 3), so that the low-temperature heat of the heat medium water from the spray tower 12 can be recovered more, and the efficiency of the absorption heat pump and the external heat supply can be improved. Therefore, the low-temperature flue gas waste heat which is difficult to utilize after desulfurization can be recovered through mixed heat exchange of the spray tower and is converted into high-grade heat energy through the second air supply heater 100 and the air preheater 52, so that the full recovery and the efficient utilization of the flue gas waste heat are realized, and the increase of the flue gas waste heat recovery amount and the improvement of the heat energy quality are realized. The low-grade flue gas waste heat after desulfurization is converted into high-temperature hot water heat through the spray tower 12, the second air supply heater 100, the air preheater 52 and the bypass economizer 2 and is used as a high-temperature driving heat source of the generator, so that the absorption heat pump function is further exerted, the heat of the low-temperature heat source of the heat medium water from the spray tower 12 is further absorbed and converted into high-temperature available heat energy, and the low-grade heat energy of the flue gas after desulfurization is driven and absorbed by the low-grade heat energy from the flue gas after desulfurization and is converted into high-temperature available heat energy. In general, the temperature of the flue gas at the outlet of the desulfurizing tower 6 is about 50 ℃, the temperature of the flue gas at the outlet of the air preheater is about 120 ℃, the temperature of the air at the inlet of the air supply heater 80 is about 15 ℃, the temperature of the hot medium water after mixed heat exchange between the spray tower 12 and the flue gas can be increased to about 40 ℃, the temperature of the air supply water after being heated by the second air supply heater 100 can be increased to about 35 ℃, and the temperature of the flue gas at the flue gas outlet 52-2 of the air preheater is about 300 ℃. Under the condition that the air supply temperature of the air preheater air supply inlet 52-3 is increased, and other secondary factors are not taken into consideration, the air supply temperature of the air preheater air supply outlet 52-4 is increased (if the income is counted into the air supply system), the heat conservation is considered, the heat increase realized by the increased flue gas flow of the bypass economizer 15 is equal to the flue gas waste heat absorbed by the heat medium water from the spray tower 12, namely, the low-grade flue gas waste heat of about 50 ℃ at the outlet of the desulfurizing tower 6 is converted into the high-grade flue gas heat of about 120 ℃ at the flue gas inlet of the flue heat exchanger or about 300 ℃ at the air preheater 52 and the bypass economizer, so that the heat of the working medium water outlet 15-4 of the flue heat exchanger and the heat of the working medium water outlet 22-4 are improved, the recovery efficiency of the low-temperature heat of the heat medium water of the desulfurizing tower 12 is further increased through the absorption heat pump, and the high-grade flue gas waste heat recovery efficiency and the waste heat utilization efficiency are further improved.
The second blast heater 100 has self-adapting and self-adjusting capabilities for stack plume abatement: when the ambient temperature is low, smoke plume phenomenon is aggravated, and the diffusion of smoke pollutants at the outlet of the chimney is worsened; meanwhile, the air temperature of the air supply inlet 100-1 of the second air supply heater is low, the cooling capacity of the second air supply heater 100 to the heat medium water is improved, the temperature of the heat medium water outlet 100-3 of the second air supply heater is reduced, the condensation cooling of the heat medium water to the flue gas in the spray tower 12 is increased, the smoke plume regulating effect of the chimney is enhanced, and pollutants in the flue gas are reduced. And vice versa. When the atmospheric humidity increases, the diffusion of the smoke pollutants at the outlet of the chimney becomes worse, the smoke plume phenomenon is aggravated, meanwhile, the air humidity increases, the specific heat capacity increases, the cooling capacity of the second air supply heater 100 to the heat medium water increases, the temperature of the heat medium water at the heat medium water outlet 100-4 of the second air supply heater decreases, the condensation cooling of the smoke is increased, the smoke plume regulating effect of the chimney is enhanced, and the pollutants in the smoke are reduced. And vice versa.
The first blower heater 80 and/or the second blower heater 100 may be disposed in a blower passage between the blower outlet 8-2 and the air preheater blower inlet 52-3, or may be disposed at the blower inlet 8-1. The former mode is characterized in that the temperature of the air supply is increased after the air supply is driven and pressurized by the air blower, and under the same condition, the heat transferred to the air supply by the heater is reduced, but the power consumption of the air blower is basically unchanged; the latter approach has the advantage that the heater inlet air temperature is low and, under the same conditions, the heater can transfer more heat to the supply air, but the power consumption of the blower will increase slightly.
The second air supply heater 100 is a dividing wall type heat exchanger.
Fig. 12 is a schematic diagram of the structure of an embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 12, on the basis of fig. 4-2, the efficient absorption heat pump system is further provided with: a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, and a high-pressure heater 31; wherein,
the steam turbine 25 is provided with a steam turbine steam inlet 25-1, a steam turbine steam outlet 25-2, a steam turbine high-pressure steam extraction outlet 25-5 and a steam turbine low-pressure steam extraction outlet 25-4;
the condenser 27 is provided with a condenser steam inlet 27-1 and a condenser working medium water outlet 27-2;
the condensate water pump 26 is provided with a condensate water pump inlet 26-1 and a condensate water pump outlet 26-2;
the first low-pressure heater 28 is provided with a first low-pressure heater working medium water inlet 28-1 and a first low-pressure heater working medium water outlet 28-2;
the low-pressure heater 29 is provided with a low-pressure heater working medium water inlet 29-1, a low-pressure heater working medium water outlet 29-2 and a low-pressure heater steam extraction inlet 29-3;
the deaerator 30 is provided with a deaerator working medium water inlet 30-1 and a deaerator working medium water outlet 30-2;
The feed pump 32 is provided with a feed pump inlet 32-1 and a feed pump outlet 32-2;
the high-pressure heater 31 is provided with a high-pressure heater working medium water inlet 31-1, a high-pressure heater working medium water outlet 31-2 and a high-pressure heater steam extraction inlet 31-3;
the boiler 21 is also provided with a boiler steam outlet 21-4 and a boiler working medium water inlet 21-5;
the boiler steam outlet 21-4 communicates directly or indirectly with the turbine steam inlet 25-1; the steam turbine steam outlet 25-2 is directly or indirectly communicated with the condenser steam inlet 27-1; the condenser working medium water outlet 27-2 is directly or indirectly communicated with the condensate pump inlet 26-1; the condensate pump outlet 26-2 is directly or indirectly communicated with the first low pressure heater working fluid water inlet 28-1; the first low-pressure heater working fluid water outlet 28-2 is in direct or indirect communication with the low-pressure heater working fluid water inlet 29-1; the low-pressure heater working medium water outlet 29-2 is directly or indirectly communicated with the deaerator working medium water inlet 30-1; the deaerator working medium water outlet 30-2 is directly or indirectly communicated with the water feed pump inlet 32-1; the water feed pump outlet 32-2 is directly or indirectly communicated with the working medium water inlet 31-1 of the high-pressure heater; the high-pressure heater working medium water outlet 31-2 is directly or indirectly communicated with the boiler working medium water inlet 21-5; the low-pressure heater extraction inlet 29-3 is directly or indirectly communicated with the turbine low-pressure extraction outlet 25-4; the high-pressure heater steam extraction inlet 31-3 is directly or indirectly communicated with the steam turbine high-pressure steam extraction outlet 25-5; the bypass economizer working medium water inlet 15-3 is directly or indirectly communicated with the first low-pressure heater working medium water outlet 28-2; the bypass economizer working medium water outlet 15-4 is also directly or indirectly communicated with the boiler working medium water inlet 21-5.
The working process is as follows:
the high-pressure high-temperature steam generated by the combustion of the boiler 21 is subjected to work in the steam turbine 25, the pressure and the temperature are reduced, the low-pressure high-temperature steam is discharged into the steam condenser 27 through the steam turbine steam outlet 25-2 and the steam condenser working medium water inlet 27-1, the cooled low-pressure steam is condensed into working medium water (condensed water) through the steam condenser 27, the working medium water flows out of the steam condenser 27 through the steam condenser working medium water outlet 27-2, then enters the first low-pressure heater 28 through the first low-pressure heater working medium water inlet 28-1 to heat and raise the temperature, part of the working medium water is sent into the low-pressure heater 29 through the low-pressure heater working medium water inlet 29-1, the working medium water is heated and raised in the low-pressure heater 29 by using the extraction steam from the steam turbine low-pressure extraction steam outlet 25-4, the working medium water after the temperature is raised flows out of the low-pressure heater 29 through the low-pressure heater working medium water outlet 29-2, the deoxygenated working medium water after the deoxygenated is sent into the deoxygenated 30, the working medium water after the deoxygenated is sent into the high-pressure heater 31 under the driving of the high-pressure heater 31, and the working medium water after the working medium water is heated by the high-pressure heater 31 is heated through the high-pressure heater working medium water outlet 31-5-pressure heater working medium water outlet 31; the other path is directly or indirectly sent to a working medium water inlet 15-3 of the bypass economizer through other equipment (such as a heater, a water pump, a buffer water tank and the like) to enter the bypass economizer 15, and the working medium water and the flue gas absorb the waste heat of the flue gas through heat exchange to raise the temperature and then flow out of the bypass economizer 15 through a working medium water outlet 15-4 of the bypass economizer; working fluid water (all or part) from the high-pressure heater 31 and the bypass economizer 15, respectively, is fed into the boiler 21 through the boiler working fluid water inlet 21-5; the fuel from the boiler fuel inlet 21-1 and the air supplied from the boiler air supply inlet 21-2 are burnt to release heat, the working medium water from the boiler working medium water inlet 21-5 is heated to generate high-pressure high-temperature steam, and the high-pressure high-temperature steam is sent to the steam turbine 26 through the boiler steam outlet 21-4 to continuously do work, and the cycle is performed.
The flue gas waste heat and the bypass economizer 15 are utilized to heat part of working medium water from the steam turbine condenser, so that steam turbine extraction steam for heating the working medium water in the traditional technology can be saved. The part of the extracted steam can return to the steam turbine to apply work and also can be extracted to supply heat to the outside, the steam turbine can reduce the power generation coal consumption when used for generating electricity, and meanwhile, the power generation capacity, the heat supply capacity and the thermoelectric ratio of the steam turbine are improved, the lowest steam inlet flow of the low-pressure cylinder can be reduced, and the peak shaving capacity and the flexibility of the unit are improved. In addition, the low-grade flue gas waste heat is converted into high-grade flue gas heat of the flue gas inlet 15-1 of the bypass economizer, working medium water from the working medium water outlet 27-2 of the condenser can be heated to the temperature requirement that the working medium water can enter the working medium water inlet 21-5 of the boiler (the working medium water can be sent to the working medium water inlet 21-5 of the boiler after being heated and warmed by a high-pressure heater system in the conventional technology), high-stage steam turbine extraction steam can be saved, and the working capacity of the steam with the same heat but high temperature in the steam turbine is high according to the steam turbine principle, so that the heat utilization efficiency is high, and the energy saving efficiency is greatly improved. In the case of accounting for the heat of the blast heater 9 fed into the furnace 1 through the air preheater 52, the flue gas waste heat recovery efficiency of the present utility model is higher.
The general boiler can also be provided with an economizer, namely the boiler working medium water inlet 21-5 also comprises the boiler economizer working medium water inlet as the boiler working medium water inlet 21-5.
Typically, the first low pressure heater 28 may be heated using steam extraction or other heat sources from the steam turbine 25. As shown in fig. 12, the steam turbine is further provided with a first low-pressure steam extraction outlet 25-3, the first low-pressure heater is further provided with a first low-pressure heater steam extraction inlet 28-3, and the first low-pressure heater steam extraction inlet 28-3 is directly or indirectly communicated with the first low-pressure steam extraction outlet 25-3; the first low-pressure heater can also heat working medium water by adopting other heat sources, such as shaft seal steam extraction heating in a power plant.
The low pressure heater 29 is a one-stage or multi-stage low pressure heater (one stage is shown in the figure); the high-pressure heater 31 is a one-stage or multi-stage high-pressure heater (one stage is shown in the figure); the first low pressure heater 28 is a one-stage or multi-stage low pressure heater (one stage is shown); the high-pressure steam extraction outlet 25-5 of the steam turbine is one-stage or multi-stage (one stage is shown in the figure); the low pressure extraction outlet 25-4 of the turbine is one or more stages (one stage is shown).
Fig. 12-1 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 12-1, the main difference from fig. 12 is that the bypass economizer working medium water inlet 15-3 communicates directly or indirectly with the feed pump outlet 32-2.
The working process is as follows:
working fluid water from the water feed pump outlet 32-2 is sent to the bypass economizer working fluid water inlet 15-3, heated by the bypass economizer 15 and sent to the boiler working fluid water inlet 21-5. Compared with the condition that the temperature of the working medium water from the working medium water outlet 28-2 of the first low-pressure heater in fig. 12 is higher, the working medium water from the working medium water inlet 15-3 of the bypass economizer in the embodiment is derived from the water supply pump outlet 32-2, more working medium water flow can be heated under the condition that the bypass economizer 15 has the same heat exchange capacity, more high-stage steam turbine extraction steam is saved, and therefore, the heat utilization efficiency is higher, and the energy saving efficiency is higher.
Fig. 12-2 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 12-2, the main difference from fig. 12-1 is that the cold water of the condenser cooling water outlet 4-2 is heated by the first air supply heater 80 to supply air. In the mode, the working medium water is heated by utilizing low-grade flue gas waste heat at the outlets of the flue heat exchanger 22 and the air preheater, a part of the working medium water at the outlet of the flue heat exchanger 22 is sent to the air supply heater 9 to heat and supply air, and then the air supply heater 9, the air preheater 2, the flue heat exchanger 22 and the bypass economizer 15 are converted into high-temperature flue gas heat energy at the flue heat exchanger flue gas inlet 22-1 or/and the bypass economizer flue gas inlet 15-1; the working medium water at the working medium water outlet 22-4 of the flue heat exchanger is used as a high-temperature driving heat source to be sent to a generator of the absorption heat pump, low-grade heat energy of the heating medium water from the spray tower 12 is absorbed, the absorption heat pump (comprising an evaporator, an absorber, a generator, a condenser and the like) is utilized to convert the low-grade heat energy into usable heat energy, the first air supply heater 80 is utilized to heat and supply air, and then the air preheater 2 and the bypass economizer 15 are utilized to convert the high-temperature heat energy of the flue gas at the flue gas inlet 15-1 of the bypass economizer; then, the high-temperature flue gas heat energy from the bypass economizer 15 and the flue gas inlet 15-1 of the bypass economizer is used for heating the working medium water from the working medium water outlet 28-2 of the first low-pressure heater or the working medium water from the water supply pump outlet 32-2 (the water supply pump outlet 32-2 in the embodiment) and then is sent to the working medium water inlet 21-5 of the boiler, so that the high-stage steam turbine extraction can be saved, the part of steam can return to the steam turbine cylinder for doing work, and the working capacity of the steam with the same heat but high temperature in the steam turbine is high according to the steam turbine principle, so that the utilization efficiency of the flue gas heat is high, and the energy saving efficiency is greatly improved.
The method can be used for non-heating seasons, when no heating requirement exists outside the system, the low-grade flue gas waste heat of the air preheater outlet and the low-grade flue gas waste heat of the desulfurized saturated flue gas which is difficult to utilize can be converted into the high-temperature working medium water heat energy of the bypass economizer working medium water outlet 15-4 for power generation or other purposes, so that the utilization efficiency of the flue gas waste heat is greatly improved, and meanwhile, the effective utilization of the non-heating season absorption heat pump is realized. And the temperature and humidity of the smoke emission can be reduced, and the smoke pollutant emission and smoke plume phenomenon can be reduced.
Fig. 12-3, 12-4, 12-5, 12-6, 12-7 are schematic structural views of further embodiments of the high efficiency absorption heat pump system of the present utility model, wherein,
fig. 12-3 and 12-4 are respectively based on fig. 4-3 and 10, and a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, a high-pressure heater 31, and the like are provided in the manner of fig. 12.
Fig. 12-5 are based on fig. 4-2, and a second blast heater 100 is provided in the manner of fig. 11, and a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, a high-pressure heater 31, and the like are provided in the manner of fig. 12.
Fig. 12-6 on the basis of fig. 4-3, a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, a high-pressure heater 31, and the like are provided in the manner of fig. 12-1.
Fig. 12-7 are a view of fig. 4-2, in which a second blast heater 100 is provided in the manner of fig. 11, and a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, a high-pressure heater 31, and the like are provided in the manner of fig. 12-1.
Fig. 12-8 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 12 to 8, on the basis of fig. 6 to 2, a first air supply heater 80 is provided in the manner of fig. 10, and a steam turbine 25, a condenser 27, a condensate pump 26, a first low-pressure heater 28, a low-pressure heater 29, a deaerator 30, a feed pump 32, a high-pressure heater 31, and the like are provided in the manner of fig. 12.
Fig. 12-9 are schematic structural views of another embodiment of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 12-9, the bypass economizer working medium water inlet 15-3 communicates directly or indirectly with the first low pressure heater working medium water outlet 28-2 or the feedwater pump outlet 32-2 through the flue heat exchanger 22; the bypass economizer working medium water inlet 15-3 is directly or indirectly communicated with the flue heat exchanger working medium water outlet 22-4; the flue heat exchanger working fluid water inlet 22-3 is directly or indirectly connected to the first low pressure heater working fluid water outlet 28-2 or the feed pump outlet 32-2 (in this embodiment, the flue heat exchanger working fluid water inlet 22-3 is directly or indirectly connected to the first low pressure heater working fluid water outlet 28-2).
The working process is as follows:
working medium water from the working medium water outlet 28-2 of the first low-pressure heater firstly enters the flue heat exchanger 22 through the working medium water inlet 22-3 of the flue heat exchanger, exchanges heat with flue gas to raise temperature, then flows out of the flue heat exchanger 22, and then enters the bypass economizer 15 through the working medium water inlet 15-3 of the bypass economizer to further heat and raise temperature.
In this way, the working medium water at the working medium water outlet 15b-4 of the second-stage bypass heat exchange module is used as a high-temperature driving heat source of the generator, so that the temperature is higher, the efficiency of the heat pump can be improved, more waste heat of saturated flue gas after the desulfurizing tower is absorbed and converted into medium-temperature heat energy to heat and supply air, and then the waste heat is converted into high-temperature heat at the flue gas inlet 15-1 of the bypass economizer. The energy from the high-temperature driving heat source of the second-stage bypass heat exchange module is returned to the air supply through the first air supply heater 80, and is also returned to the flue gas heat energy of the flue gas inlet 15-1 of the bypass economizer through the air preheater and the bypass economizer in an equivalent manner under the condition of keeping the flue gas at the outlet of the air preheater and the air supply temperature of the air supply outlet of the air preheater unchanged. The bypass economizer working medium water outlet 15-4 is used for heating the working medium water from the first low pressure heater 28 or the feed water pump 32 (the first low pressure heater in this embodiment), and the flue gas waste heat utilization efficiency is greatly improved. In addition, under the mode, the outlet flue gas of the air preheater can be reduced as much as possible, the flue gas waste heat is converted to the high-temperature heat of the inlet flue gas of the bypass economizer as much as possible, the bypass flue gas flow is increased, the flue resistance and the fan power consumption can be further reduced, and the heat exchange capacity, the area and the manufacturing cost of the flue heat exchanger can be reduced.
From the above, the utility model realizes the full and deep recovery of the flue gas waste heat and converts the flue gas waste heat into high-grade heat energy, thereby greatly improving the usable range, the utilization value and the utilization efficiency of the flue gas waste heat; meanwhile, the utility model also provides stronger adaptability and mode selectivity.
If the temperature difference between low-temperature heat medium water at the outlet of the spray tower and the air supply is large in heating seasons and when the heating load is high, part of heat medium water is heated and supplied by the second air supply heater 100 and is converted into high-grade heat energy through the air preheater and the bypass economizer; converting low-grade flue gas waste heat at an outlet of the air preheater into high-temperature working medium water heat energy at a working medium water outlet of the bypass economizer by using a flue heat exchanger, an air supply heater, the air preheater and the bypass economizer; and then the other part of heat medium water from the spray tower is used as a low-temperature heat source, the high-temperature working medium water bypassing the working medium water outlet of the economizer is used as a high-temperature driving heat source, the heat of the heat medium water from the spray tower is further recovered by utilizing the absorption heat pump, and the available heat output by the absorption heat pump system is large and the temperature level is high. Thereby greatly improving the recovery efficiency and the utilization efficiency of the waste heat of the flue gas.
When there is no heating demand in non-heating season or outside the system, working medium water at the working medium water outlet of the flue heat exchanger is used as a high-temperature driving heat source, the waste heat of the flue gas is recovered through the absorption heat pump and the spray tower, the first air supply heater is used for heating and supplying air, and the waste heat is converted into high-temperature flue gas heat energy at the flue gas inlet of the bypass economizer through the air preheater and the bypass economizer; and converting the low-grade flue gas waste heat at the outlet of the air preheater into high-temperature flue gas heat energy at the flue gas inlet of the bypass economizer by using the flue heat exchanger, the air supply heater, the air preheater and the bypass economizer. By utilizing the bypass economizer and the high-temperature flue gas at the flue gas inlet to heat the working medium water from the working medium water outlet of the first low-pressure heater or the water supply pump outlet, the power generation coal consumption can be greatly reduced, and the energy-saving efficiency is improved. At this time, the working medium water temperature of the working medium water outlet of the flue heat exchanger is considered to be low, and the working medium water can be sent to the high-temperature heat source inlet 3-11-1 of the downstream generator so as to ensure the normal operation of the absorption heat pump. And working medium water at the working medium water outlet of the second-stage bypass heat exchange module can be used as a high-temperature driving heat source.
In practical application, the first air supply heater and the second air supply heater may be combined into one, which is called as a common air supply heater. In heating season, the environment temperature is low, the heat medium water from the spray tower and the common air supply heater are used for heating and air supply, and the heat exchange efficiency is high; in non-heating seasons, the environment temperature is high, the temperature difference between the heat medium water at the heat medium water outlet of the spray tower and the air supply is small, the heat exchange efficiency is low, the heat of the heat medium water at the heat medium water outlet of the spray tower can be recovered by utilizing the absorption heat pump and converted into medium-temperature heat energy of cold water at the outlet (the condenser cooling water outlet or/and the absorber cold water outlet) of the absorption heat pump with high temperature, and the heat source of the common air supply heater is changed into the cold water at the outlet of the absorption heat pump, so that the heat exchange efficiency is improved. Meanwhile, the absorption heat pump in non-heating seasons also exerts investment value.
The working fluid water at the working fluid water outlet 22-4 of the flue heat exchanger in fig. 12, fig. 12-1, fig. 12-2, fig. 12-3, fig. 12-4, fig. 12-5, fig. 12-6, fig. 12-7, fig. 12-8 or the working fluid water at the working fluid water outlet 15b-4 of the second-stage bypass heat exchange module can also be sent to the high-temperature heat source inlet 3-11-1 of the downstream generator, and the details are not repeated.
Fig. 13 is a schematic diagram of another embodiment of a high efficiency absorption heat pump system of the present utility model.
As shown in fig. 13, on the basis of fig. 12-8, a bypass flue gas control baffle 15-8 is arranged on a flue gas diversion branch from the boiler flue gas outlet 21-3 to the bypass economizer flue gas inlet 15-1, and is used for adjusting the flue gas flow rate entering the flue gas channel of the bypass economizer 15.
The working principle is as follows:
the flue gas temperature of the flue gas outlet 52-2 of the air preheater, the working medium water temperature of the working medium water outlet 22-4 of the flue heat exchanger and the working medium water temperature of the working medium water outlet 15-4 of the bypass economizer can be further adjusted by adjusting the opening degree of the bypass flue gas control baffle 15-8 to adjust the ratio between the flue gas flow entering the flue gas channel of the bypass economizer 15 and the flue gas flow entering the flue gas channel of the air preheater 52.
At present, the main problems of the boiler unit are as follows: firstly, the flue gas temperature is low under low load, so that the denitration efficiency is ensured, a large amount of ammonium bisulfate is generated due to excessive ammonia spraying of a denitration system, and then the ammonium bisulfate is deposited on heat exchange elements of an air preheater and a flue heat exchanger, so that blocking corrosion is caused; secondly, the flue heat exchanger for recycling the waste heat of the flue gas has the problems of abrasion, corrosion, leakage, blockage and the like, and seriously affects the operation of a unit; thirdly, under the condition of adopting electric dust removal, if the smoke temperature at the outlet of the air preheater is too high, the electric dust removal efficiency after the air preheater is arranged is reduced; and fourthly, the resistance of the flue is large, the load capacity of the unit is influenced, and the power consumption of the fan is increased.
The system and the method provided by the embodiment can solve the problems and further improve the recycling efficiency of the waste heat of the flue gas: in the normal operation stage, on the premise of ensuring that the air supply temperature of the air supply outlet of the air preheater is within a certain range, the bypass flue gas control baffle 15-8 is opened, the bypass flue gas flow is increased, the flue gas temperature of the air preheater flue gas outlet is reduced as much as possible, and the flue gas waste heat can be converted into the high-temperature heat energy of the bypass economizer. Meanwhile, as the outlet smoke temperature of the air preheater is reduced, namely the inlet smoke temperature of the dust remover is low, the flue heat exchanger can be arranged behind the dust remover on the premise of ensuring the dust removal efficiency, so that the abrasion problem of the flue heat exchanger is solved. Because the air preheater and the dust remover are covered by dust, and the leakage risk is avoided, the flue gas temperature at the outlet of the air preheater is reduced as much as possible, and ammonium bisulfate can be trapped in the air preheater and the dust remover, so that the influence on the flue heat exchanger is reduced. When the ammonium bisulfate blockage in the air preheater reaches a certain degree, the bypass flue gas control baffle 15-8 can be closed or turned off in a staged way, and the flue gas waste heat at the outlet of the air preheater or/and the flue gas waste heat after desulfurization are returned to the air preheater by utilizing the absorption heat pump and the first air supply heater 80 by utilizing the heat exchanger 22 and the air supply heater 9, and the temperature in the air preheater and the flue gas temperature at the outlet of the air preheater can be greatly increased to the ammonium bisulfate gasification temperature, and the air preheater is cleaned by utilizing the soot blower in a matched manner, so that the normal operation is recovered. In addition, by utilizing the bypass economizer and the bypass flue gas baffle, the flue resistance and the fan power consumption can be reduced, and meanwhile, the areas of the flue heat exchanger and the air supply heater can be reduced, so that the flue resistance and the air supply channel resistance are reduced, and the power consumption of the induced draft fan and the air supply fan is reduced.
The bypass flue gas control baffle 15-8 may also be disposed on a flue gas diversion branch of the bypass economizer flue gas outlet 15-2.
FIG. 14 is a schematic diagram of one embodiment of a desulfurizing tower, a spray tower, in some embodiments of the high efficiency absorption heat pump system of the present utility model.
As shown in fig. 14, in the high-efficiency absorption heat pump system, the spray tower 12 is disposed above the desulfurizing tower 6, and the desulfurizing tower 6 and the spray tower 12 are connected through the liquid collecting device 12-7 to form a desulfurizing and spraying integrated structure. The desulfurization spraying integrated structure is internally provided with a slurry pool 6-3, a desulfurization tower flue gas inlet 6-5, a desulfurization tower spraying device 6-6, a desulfurization tower demister 6-7, a liquid collecting device 12-7, a spray tower water distributing device 12-6 and a spray tower flue gas outlet 12-2 from bottom to top.
The liquid collecting device 12-7 is a multifunctional integrated structure comprising the flue gas outlet 6-4 of the desulfurizing tower, the flue gas inlet 12-1 of the spraying tower and the water receiving device 12-5 of the spraying tower, flue gas from the desulfurizing tower 6 can enter the spraying tower 12 through the liquid collecting device 12-7, and heat medium water from the water distributing device 12-6 of the spraying tower falls into the liquid collecting device 12-7 to be collected and is led out of the spraying tower 12 through the heat medium water outlet 12-4 of the spraying tower to be incapable of flowing into the desulfurizing tower 6.
The tower wall of the tower body above the liquid collecting device 12-7 (the spray tower body in the present embodiment) and the tower wall of the tower body below the liquid collecting device 12-7 (the desulfurizing tower body in the present embodiment) can be directly connected, and the liquid collecting device 12-7 is arranged in the combined part of the tower wall of the tower body above the liquid collecting device 12-7 and the tower wall of the tower body below the liquid collecting device 12-7 and is separated up and down by the liquid collecting device 12-7; the tower wall of the tower body above the liquid collecting device 12-7 can be connected with the liquid collecting device 12-7, and then the liquid collecting device 12-7 is connected with the tower wall of the tower body below the liquid collecting device.
The structure has the advantages of saving occupied space, reducing system resistance and having great advantages especially for the improvement of the existing unit. The liquid collecting device 12-7 can be a water receiving disc commonly used in single-tower double-circulation, a liquid collector commonly used in the chemical industry, a liquid collector and the like, so long as the functional requirements of the liquid collecting device are met.
Fig. 15 is a schematic structural view of an embodiment of a liquid collecting device in the high-efficiency absorption heat pump system of the present utility model.
As shown in fig. 15, the liquid collecting device 12-7 has a liquid collecting and demisting integrated structure with demisting function. The liquid collecting and demisting integrated structure comprises a liquid collecting chassis 12-8, a gas lift pipe 12-9 and a gas lift cap 12-10. The liquid collecting chassis 12-8 is provided with a plurality of vent holes 12-11, the vent holes 12-11 are correspondingly provided with the gas raising pipes 12-9, the top ends of the gas raising pipes 12-9 are provided with the gas raising caps 12-10, and gas raising channels 12-13 for flue gas circulation are arranged between the gas raising caps 12-10 or between the gas raising caps 12-10 and the top ends of the gas raising pipes 12-9 or on the pipe wall of the upper section of the gas raising pipes 12-9; the draft tube 12-9 is provided with guide vanes or swirlers 12-12 therein (fig. 15a, 15b are schematic structural views of an embodiment of the guide vanes); the liquid collecting chassis 12-8 is provided with a water blocking edge 12-4 or the liquid collecting chassis 12-8 is in sealing connection with the inner wall of the tower body of the desulfurization spraying integrated structure and takes the inner wall of the desulfurization spraying integrated structure as a water blocking edge 12-14, an upward opening space enclosed between the liquid collecting chassis 12-8 and the water blocking edge 12-14 is taken as a spray tower water receiving device 12-5, and the spray tower water receiving device 12-5 is communicated with the spray tower heating medium water outlet 12-4. The guide vane or the cyclone 12-12 is fixedly arranged in the gas lift pipe, and when the flue gas flows through the guide vane or the cyclone from bottom to top, the flue gas generates high-speed rotary motion taking the central line of the gas lift pipe as the center under the guide effect of the flue gas and takes spiral ascending motion.
The structure can purify the flue gas entering the spray tower 12, reduce the pollution of the flue gas to the heat medium water, and simultaneously reduce the height of the desulfurization and spray integrated structure.
The working principle is as follows: the flue gas with particles and fog drops from the desulfurizing tower 6 flows upwards into the gas lift pipe 12-9 in the liquid collecting and demisting integrated structure 12-7, the flue gas rotates at a high speed and ascends around the central line of the gas lift pipe 12-9 under the action of the guide vane or the cyclone 12-12 in the gas lift pipe 12-9, namely, the flue gas moves in a spiral ascending mode, the particles and the fog drops collide with each other and are condensed into large particles, the large particles and the fog drops as well as the heavy particles with a specific gravity are thrown to the pipe wall of the gas lift pipe 12-9 under the action of centrifugal force to be trapped, and then flow downwards under the action of gravity, so that the separation and removal of the particles, the fog drops and the flue gas are realized. The flue gas continues to flow upwards to the gas raising cap 12-10, flows into the spray tower 12 from the gas raising cap itself or the gas raising channel 12-13 arranged between the top end of the gas raising cap 12-10 and the gas raising pipe 12-9 or on the pipe wall of the upper section of the gas raising pipe 12-9, flows upwards to be mixed and heat exchanged with the heat medium water falling from the spray tower water distribution device 12-6 from top to bottom in countercurrent, and then the temperature, humidity and pollutants of the flue gas are further reduced, and flows out of the spray tower 12 through the spray tower flue gas outlet 12-2. The heat medium water from the spray tower water distribution device 12-6 falls into the spray tower water receiving device 12-5 from top to bottom, and the heat medium water together with condensed water condensed and separated from the flue gas is led out of the spray tower 12 through the spray tower heat medium water outlet 12-4. The function of the gas-raising cap 12-10 is to enable the flue gas from the desulfurizing tower 6 to flow into the spraying tower 12, while the heat medium water from the water distribution device 12-6 of the spraying tower 12 cannot flow into the desulfurizing tower 6. The lift cap may take the shape of a cap, a shutter, or other commercially available lift cap forms, as long as the above-described function is achieved. The air lifting cap and the air lifting pipe can be of an integrated structure or a split structure. One of the gas risers may correspond to one of the gas caps, or two or more of the gas risers may share one of the gas caps.
It is possible to take the form of a structure in which the outer diameter of the gas-raising cap 12-10 is larger than the outer diameter of the gas-raising tube 12-9, that is, the vertical projection of the gas-raising cap 12-10 is completely covered and larger than the vertical projection of the gas-raising tube. Since the diameter of the gas-raising cap 12-10 is larger than the outer diameter of the gas-raising pipe 12-6, the heat medium water cannot flow into the gas-raising pipe 12-9, that is, cannot flow into the desulfurizing tower 6.
The distance of each of the risers 12-9 can be appropriately adjusted as needed to provide the desired volume of the heat medium water reservoir.
The liquid collecting device 12-7 can also adopt the structure shown in fig. 15-1, a demisting pipe 12-15 is connected below the gas raising pipe 12-9, and a guide vane or a cyclone is arranged in the demisting pipe. The working principle is basically the same as that of the prior art.
The liquid collecting device 12-7 can also adopt the structure shown in fig. 15-2, a demisting pipe 12-15 is arranged in the gas raising pipe 12-9, and guide vanes or swirlers are arranged in the demisting pipe. The working principle is basically the same as that of the prior art.
The riser pipe 12-9 and the demisting pipe 12-15 can be separated or integrated.
Optionally, the water blocking edge is connected with the tower body above the liquid collecting device (the tower body of the spray tower in the embodiment) or/and the tower body below the liquid collecting device (the tower body of the desulfurizing tower in the embodiment) to form an integrated structure. The tower wall of the tower body above the liquid collecting device 12-7 and the tower wall of the tower body below the liquid collecting device 12-7 can be directly connected, the liquid collecting device 12-7 is arranged in the combination part of the tower wall of the tower body above the liquid collecting device 12-7 and the tower wall of the tower body below the liquid collecting device 12-7, and is vertically separated through the liquid collecting device 12-7, the inner wall of the tower body above the liquid collecting device 12-7 can be used as a water blocking edge, and the liquid collecting and demisting integrated structure can also be provided with a water blocking edge on the liquid collecting chassis; the tower wall of the tower body above the liquid collecting device 12-7 can be connected with the water blocking edge of the liquid collecting device 12-7, and then the water blocking edge of the liquid collecting device 12-7 is connected with the tower wall of the tower body below the water blocking edge.
Fig. 15-3 are schematic structural views of another embodiment of a liquid collecting device in a high efficiency absorption heat pump system of the present utility model.
Fig. 15-4 are schematic structural views of one embodiment of an air cap of a liquid collection device.
15-3 and 15-4, based on FIG. 15, the lift cap 12-10 adopts a tower-type shutter structure with a small top and a large bottom, and flue gas from below the lift cap 12-10 can flow to above the lift cap 12-10 through the lift cap 12-10, but heat medium water from above the lift cap 12-10 cannot flow to below the lift cap 12-10 through the lift cap 12-10; in addition, the outer diameter of the riser cap and the outer diameter of the riser are smaller than or equal to the inner diameter of the vent hole 12-11 on the liquid collecting chassis 12-8, so that the riser 12-9 and the riser cap 12-10 can be pulled out from the lower part of the liquid collecting chassis 12-8 for maintenance. The purpose is mainly to reduce the height of the desulfurization spraying integrated structure.
Fig. 16 is a schematic structural view of another embodiment of a desulfurizing tower and a spray tower in the high-efficiency absorption heat pump system of the present utility model.
As shown in FIG. 16, a filler layer 12-16 is disposed between the liquid collecting device 12-7 and the water distributing device 12-6. The advantages are that: when the flow rate of the heating medium is fixed, the residence time and the heat transfer area of the heating medium can be improved, and the heat exchange efficiency and the outlet water temperature can be improved.
The foregoing description is only exemplary of the utility model and is not intended to limit the scope of the utility model. Equivalent alterations, modifications and combinations will be effected by those skilled in the art without departing from the spirit and principles of this utility model.
Claims (51)
1. The efficient absorption heat pump system is characterized by comprising an evaporator, an absorber, a condenser and a generator;
the evaporator comprises an evaporator tank body, and an evaporator heat transfer pipe is arranged in the tank body; the evaporator tank body is provided with an evaporator low-temperature heat source inlet, an evaporator low-temperature heat source outlet, an evaporator refrigerant water inlet and an evaporator refrigerant water vapor outlet; the low-temperature heat source inlet of the evaporator is directly or indirectly communicated with the low-temperature heat source outlet of the evaporator through an evaporator heat transfer pipe; the number of the evaporators is one or more;
the absorber comprises an absorber tank body, and an absorber heat transfer pipe is arranged in the absorber tank body; an absorber spraying device is arranged above the absorber heat transfer pipe in the absorber tank body; the absorber tank body is provided with an absorber cold water inlet, an absorber cold water outlet, an absorber refrigerant water vapor inlet, an absorber concentrated absorbent solution inlet and an absorber diluted absorbent solution outlet; the absorber concentrated absorbent solution inlet is directly or indirectly communicated with the absorber spraying device; the absorber cold water inlet is directly or indirectly communicated with the absorber cold water outlet through the absorber heat transfer pipe; the absorber is one or more;
The condenser comprises a condenser tank body, and a condenser heat transfer pipe is arranged in the condenser tank body; the condenser tank body is provided with a condenser cooling water inlet, a condenser cooling water outlet, a condenser refrigerant water vapor inlet and a condenser refrigerant water outlet; the condenser cooling water inlet is directly or indirectly communicated with the condenser cooling water outlet through the condenser heat transfer pipe; the number of the condensers is one or more;
the generator is provided with a generator high-temperature heat source inlet and a generator high-temperature heat source outlet;
the generator comprises a two-effect or multi-effect generator; wherein the 1 st effect sub-generator is used as the last effect sub-generator of the 2 nd effect sub-generator; similarly, the 2 nd effect generator is used as the last effect generator of the last 1 effect generator;
each effect generator comprises an effect generator tank body, and each effect generator tank body is internally provided with the effect generator heat transfer tube; each of the effect generator tank bodies is provided with the effect generator high-temperature heat source inlet, the effect generator high-temperature heat source outlet, the effect generator dilute absorbent solution inlet, the effect generator concentrated absorbent solution outlet and the effect generator refrigerant steam outlet; the high-temperature heat source inlet of each effect generator is directly or indirectly communicated with the high-temperature heat source outlet of the effect generator through the heat transfer pipe of the effect generator;
The high-temperature heat source inlet of the 1 st effect generator of the generator is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source inlets of other effect generators are directly or indirectly communicated with the refrigerant steam outlets of the last effect generator; the refrigerant steam outlet of the last effect sub-generator is directly or indirectly communicated with the refrigerant steam inlet of the condenser;
the high-temperature heat source outlet of the 1 st effect generator of the generator is directly or indirectly communicated with the high-temperature heat source outlet of the generator; the outlets of the high-temperature heat sources of the other effect generators are respectively and independently communicated with the refrigerant water inlet of the evaporator directly or indirectly; or, directly or indirectly communicate with the evaporator refrigerant water inlet through the condenser; or, the device is also provided with a cold water preheater, wherein the cold water preheater is provided with a cold water inlet of the cold water preheater, a cold water outlet of the cold water preheater, a cold water inlet of the cold water preheater and a cold water outlet of the cold water preheater, and other high-temperature heat source outlets of the various effect generators are respectively and independently communicated with the cold water inlet of the cold water preheater directly or indirectly; the cold water outlet of the cold water preheater is directly or indirectly communicated with the cold water inlet of the absorber;
Each effect generator is independently selected from an immersion type heat exchange mode or a spray type heat exchange mode; when any one of the effect generators adopts a spray type heat exchange mode, the effect generator spray device is also arranged in the effect generator tank body, and the dilute absorbent solution inlet of the effect generator is directly or indirectly communicated with the effect generator spray device;
the dilute absorbent solution inlet of any one of the generators is communicated with the concentrated absorbent solution outlet of the generator through the inside of the tank body of the generator and forms an absorbent channel of the generator; the absorber channels of each effect generator adopt a parallel connection mode, a serial connection mode or a serial-parallel connection mixing mode; in the parallel connection mode, the dilute absorbent solution inlet of each effect generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber, and the concentrated absorbent solution outlet of each effect generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber; in the series connection communication mode, the concentrated absorbent solution outlet of the uppermost sub-generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber, the concentrated absorbent solution outlet of each other sub-generator is directly or indirectly communicated with the dilute absorbent solution inlet of the last sub-generator, and the dilute absorbent solution inlet of the last sub-generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber; the condenser refrigerant water outlet is in direct or indirect communication with the evaporator refrigerant water inlet; the evaporator refrigerant vapor outlet is in direct or indirect communication with the absorber refrigerant vapor inlet;
The absorber cold water outlet is directly or indirectly communicated with the condenser cooling water inlet;
optionally, a heat exchange device is further provided, wherein the heat exchange device is provided with a cold absorbent channel and a hot absorbent channel, and the cold absorbent channel is connected in series with the absorbent channel of the dilute absorbent solution flow direction generator of the absorber; the heat absorber channel is connected in series with an absorber channel of the generator, through which the concentrated absorber solution flows to the absorber;
optionally, an absorbent solution pump is connected in series with an absorbent solution channel directly or indirectly communicated with the absorber dilute absorbent solution outlet or the absorber concentrated absorbent solution inlet;
optionally, the evaporator tank body is also provided with an evaporator refrigerant water outlet, an evaporator refrigerant water circulation inlet or the evaporator refrigerant water inlet is used as the evaporator refrigerant water circulation inlet; an evaporator spraying device is arranged above the evaporator heat transfer pipe in the evaporator tank body; a refrigerant pump is also arranged; the evaporator refrigerant water outlet is directly or indirectly communicated with the evaporator refrigerant water circulation inlet through the refrigerant pump; the evaporator refrigerant water circulation inlet is directly or indirectly communicated with the evaporator spraying device;
Optionally, a cold water reheater is connected in series with the condenser cooling water outlet.
2. A high efficiency absorption heat pump system according to claim 1, further comprising one or more downstream generators;
each downstream generator comprises a 1-effect or multi-effect generator; each effect generator of each downstream generator comprises a tank body of the effect generator, and a heat transfer tube of the effect generator is arranged in the tank body of each effect generator of each downstream generator; each effect generator tank body of each downstream generator is provided with the high-temperature heat source inlet of the effect generator, the high-temperature heat source outlet of the effect generator, the dilute absorbent solution inlet of the effect generator, the concentrated absorbent solution outlet of the effect generator and the refrigerant steam outlet of the effect generator; the high-temperature heat source inlet of each effect generator of each downstream generator is directly or indirectly communicated with the high-temperature heat source outlet of the effect generator through the heat transfer pipe of the effect generator;
the 1 st effect sub generator high temperature heat source inlet is directly or indirectly communicated with the generator high temperature heat source inlet; the high-temperature heat source inlet of the 1 st effect sub first generator is directly or indirectly communicated with the high-temperature heat source outlet of the 1 st effect sub generator; similarly, the high-temperature heat source inlet of the 1 st effect sub-generator of each downstream generator is directly or indirectly communicated with the high-temperature heat source outlet of the 1 st effect sub-generator of the upstream generator of the downstream generator; the 1 st effect sub-generator of the most downstream generator is directly or indirectly communicated with the generator high temperature heat source outlet;
Except for the high-temperature heat source inlet of the 1 st effect sub-generator in each downstream generator, the high-temperature heat source inlet of each other effect sub-generator in each downstream generator is directly or indirectly communicated with the refrigerant water vapor outlet of the last effect sub-generator; the refrigerant vapor outlet of the last effect sub-generator in each downstream generator is directly or indirectly communicated with the refrigerant vapor inlet of the condenser;
except the 1 st effect generator high-temperature heat source outlet in each downstream generator, the other effect generator high-temperature heat source outlets in each downstream generator are respectively and independently communicated with the evaporator refrigerant water inlet directly or indirectly; or, directly or indirectly communicate with the evaporator refrigerant water inlet through the condenser; or is directly or indirectly communicated with the refrigerant water inlet of the cold water preheater; wherein the cold water preheater is provided with one or more than one;
each effect generator in each downstream generator independently selects an immersed heat exchange mode or a spray heat exchange mode; when any one of the effect generators adopts a spray type heat exchange mode, the effect generator spray device is also arranged in the effect generator tank body, and the dilute absorbent solution inlet of the effect generator is directly or indirectly communicated with the effect generator spray device;
The dilute absorbent solution inlet of any one of the downstream generators is communicated with the concentrated absorbent solution outlet of the generator through the inside of the tank body of the generator and forms an absorbent channel of the generator; the absorber channels of each effect generator in each downstream generator are connected in parallel, in series or in a series-parallel mixed mode; in the parallel connection mode, the dilute absorbent solution inlet of each effect generator in each downstream generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber, and the concentrated absorbent solution outlet of each effect generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber; in the series connection communication mode, the concentrated absorbent solution outlet of the uppermost sub-generator in each downstream generator is directly or indirectly communicated with the concentrated absorbent solution inlet of the absorber, the concentrated absorbent solution outlet of each other sub-generator is directly or indirectly communicated with the dilute absorbent solution inlet of the last sub-generator, and the dilute absorbent solution inlet of the last sub-generator is directly or indirectly communicated with the dilute absorbent solution outlet of the absorber;
optionally, a heat exchange device is further provided, wherein the heat exchange device is provided with a cold absorbent channel and a hot absorbent channel, and the cold absorbent channel is connected in series with the absorbent channel of the dilute absorbent solution of the absorber flowing to each generator; the heat absorber channels are connected in series with the concentrated absorbent solution of each generator flowing to the absorber channels of the absorber;
Optionally, one or more downstream generator high temperature heat source inlets are also provided; any one of the downstream generator high temperature heat source inlets is directly or indirectly communicated with the 1 st effect sub generator high temperature heat source inlet of the downstream generator.
3. A high efficiency absorption heat pump system according to claim 1, further comprising: the boiler comprises a boiler, a bypass economizer, an air preheater, a flue heat exchanger, a desulfurizing tower, a spray tower, a chimney, a blower and a blast heater; wherein,
the boiler is provided with a fuel inlet, a boiler air supply inlet and a boiler flue gas outlet;
the bypass economizer is provided with a bypass economizer flue gas inlet, a bypass economizer flue gas outlet, a bypass economizer working medium water inlet and a bypass economizer working medium water outlet;
the air preheater is provided with an air preheater flue gas inlet, an air preheater flue gas outlet, an air preheater air supply inlet and an air preheater air supply outlet;
the flue heat exchanger is provided with a flue heat exchanger smoke inlet, a flue heat exchanger smoke outlet, a flue heat exchanger working medium water inlet and a flue heat exchanger working medium water outlet; the flue heat exchanger is a dividing wall type heat exchanger;
the desulfurizing tower includes: a desulfurizing tower body and a slurry circulating pump; a slurry pond is arranged at the bottom of the desulfurizing tower body; the lower part of the desulfurizing tower body is provided with a desulfurizing tower flue gas inlet, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet; a desulfurizing tower spraying device is arranged between the desulfurizing tower flue gas inlet and the desulfurizing tower flue gas outlet, the desulfurizing tower spraying device is directly or indirectly communicated with the slurry circulating pump, and the slurry circulating pump is directly or indirectly communicated with the slurry pool; optionally, a desulfurizing tower demister is arranged between the desulfurizing tower spraying device and the desulfurizing tower flue gas outlet;
The spray tower is provided with a spray tower flue gas inlet, a spray tower flue gas outlet, a spray tower heat medium water inlet and a spray tower heat medium water outlet; a spray tower water receiving device is arranged at the bottom of the spray tower; a spray tower water distribution device for heating medium water is arranged between the spray tower flue gas inlet and the spray tower flue gas outlet; the spray tower water distribution device is directly or indirectly communicated with the spray tower heat medium water inlet, and the spray tower water receiving device is directly or indirectly communicated with the spray tower heat medium water outlet;
the blower is provided with a blower inlet and a blower outlet;
the air supply heater is provided with an air supply inlet of the air supply heater, an air supply outlet of the air supply heater, a working medium water inlet of the air supply heater and a working medium water outlet of the air supply heater;
the boiler flue gas outlet is directly or indirectly communicated with the air preheater flue gas inlet and the bypass economizer flue gas inlet at the same time; the flue gas outlet of the air preheater and the flue gas outlet of the bypass economizer are directly or indirectly communicated with the flue gas inlet of the flue heat exchanger; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the flue gas outlet of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet of the spray tower; the flue gas outlet of the spray tower is directly or indirectly communicated with the chimney;
The air supply inlet of the air blower is directly or indirectly communicated with the atmosphere; the air supply outlet of the air supply blower is directly or indirectly communicated with the air supply inlet of the air supply heater; the air supply outlet of the air supply heater is directly or indirectly communicated with the air supply inlet of the air preheater; the air preheater air supply outlet is directly or indirectly communicated with the boiler air supply inlet;
the working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; the flue heat exchanger working medium water outlet is directly or indirectly communicated with the working medium water inlet of the air supply heater;
the spray tower heating medium water outlet is directly or indirectly communicated with the evaporator low-temperature heat source inlet; the low-temperature heat source outlet of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet;
the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet;
Optionally, a spray tower demister is arranged on a flue gas channel between the spray tower water distribution device and the chimney;
optionally, a heat medium water circulating pump is arranged on a heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet or the spray tower heat medium water inlet;
optionally, a high-temperature heat source water pump is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet or the generator high-temperature heat source outlet;
optionally, a cold water pump is connected in series on a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet;
optionally, a dust remover or/and a draught fan are connected in series at the flue gas inlet of the flue heat exchanger or the flue gas outlet of the flue heat exchanger;
optionally, the bypass economizer working medium water outlet is also communicated with a heat user;
optionally, a first desulfurizing tower is connected in series on the flue directly or indirectly communicated with the desulfurizing tower flue gas outlet or the desulfurizing tower flue gas outlet;
optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger or the working medium water outlet of the flue heat exchanger;
optionally, a bypass feed water pump or/and a bypass deaerator or/and a buffer water tank are arranged on a working medium water channel directly or indirectly communicated with the working medium water inlet of the bypass economizer.
4. A high efficiency absorption heat pump system according to claim 2, further comprising: the boiler comprises a boiler, a bypass economizer, an air preheater, a flue heat exchanger, a desulfurizing tower, a spray tower, a chimney, a blower and a blast heater; wherein,
the boiler is provided with a fuel inlet, a boiler air supply inlet and a boiler flue gas outlet;
the bypass economizer is provided with a bypass economizer flue gas inlet, a bypass economizer flue gas outlet, a bypass economizer working medium water inlet and a bypass economizer working medium water outlet;
the air preheater is provided with an air preheater flue gas inlet, an air preheater flue gas outlet, an air preheater air supply inlet and an air preheater air supply outlet;
the flue heat exchanger is provided with a flue heat exchanger smoke inlet, a flue heat exchanger smoke outlet, a flue heat exchanger working medium water inlet and a flue heat exchanger working medium water outlet; the flue heat exchanger is a dividing wall type heat exchanger;
the desulfurizing tower includes: a desulfurizing tower body and a slurry circulating pump; a slurry pond is arranged at the bottom of the desulfurizing tower body; the lower part of the desulfurizing tower body is provided with a desulfurizing tower flue gas inlet, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet; a desulfurizing tower spraying device is arranged between the desulfurizing tower flue gas inlet and the desulfurizing tower flue gas outlet, the desulfurizing tower spraying device is directly or indirectly communicated with the slurry circulating pump, and the slurry circulating pump is directly or indirectly communicated with the slurry pool; optionally, a desulfurizing tower demister is arranged between the desulfurizing tower spraying device and the desulfurizing tower flue gas outlet;
The spray tower is provided with a spray tower flue gas inlet, a spray tower flue gas outlet, a spray tower heat medium water inlet and a spray tower heat medium water outlet; a spray tower water receiving device is arranged at the bottom of the spray tower; a spray tower water distribution device for heating medium water is arranged between the spray tower flue gas inlet and the spray tower flue gas outlet; the spray tower water distribution device is directly or indirectly communicated with the spray tower heat medium water inlet, and the spray tower water receiving device is directly or indirectly communicated with the spray tower heat medium water outlet;
the blower is provided with a blower inlet and a blower outlet;
the air supply heater is provided with an air supply inlet of the air supply heater, an air supply outlet of the air supply heater, a working medium water inlet of the air supply heater and a working medium water outlet of the air supply heater;
the boiler flue gas outlet is directly or indirectly communicated with the air preheater flue gas inlet and the bypass economizer flue gas inlet at the same time; the flue gas outlet of the air preheater and the flue gas outlet of the bypass economizer are directly or indirectly communicated with the flue gas inlet of the flue heat exchanger; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the flue gas outlet of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet of the spray tower; the flue gas outlet of the spray tower is directly or indirectly communicated with the chimney;
The air supply inlet of the air blower is directly or indirectly communicated with the atmosphere; the air supply outlet of the air supply blower is directly or indirectly communicated with the air supply inlet of the air supply heater; the air supply outlet of the air supply heater is directly or indirectly communicated with the air supply inlet of the air preheater; the air preheater air supply outlet is directly or indirectly communicated with the boiler air supply inlet;
the working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; the flue heat exchanger working medium water outlet is directly or indirectly communicated with the working medium water inlet of the air supply heater;
the spray tower heating medium water outlet is directly or indirectly communicated with the evaporator low-temperature heat source inlet; the low-temperature heat source outlet of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet;
the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; or the bypass economizer working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the downstream generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the downstream generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet;
Optionally, a spray tower demister is arranged on a flue gas channel between the spray tower water distribution device and the chimney;
optionally, a heat medium water circulating pump is arranged on a heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet or the spray tower heat medium water inlet;
optionally, a high-temperature heat source water pump is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet or the generator high-temperature heat source outlet;
optionally, a cold water pump is connected in series on a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet;
optionally, a dust remover or/and a draught fan are connected in series at the flue gas inlet of the flue heat exchanger or the flue gas outlet of the flue heat exchanger;
optionally, the bypass economizer working medium water outlet is also communicated with a heat user;
optionally, a first desulfurizing tower is connected in series on the flue directly or indirectly communicated with the desulfurizing tower flue gas outlet or the desulfurizing tower flue gas outlet;
optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger or the working medium water outlet of the flue heat exchanger;
optionally, a bypass feed water pump or/and a bypass deaerator or/and a buffer water tank are arranged on a working medium water channel directly or indirectly communicated with the working medium water inlet of the bypass economizer.
5. A high efficiency absorption heat pump system according to claim 1, further comprising: the boiler comprises a boiler, a bypass economizer, an air preheater, a flue heat exchanger, a desulfurizing tower, a spray tower, a chimney, a blower and a blast heater; wherein,
the boiler is provided with a fuel inlet, a boiler air supply inlet and a boiler flue gas outlet;
the bypass economizer comprises a first-stage bypass heat exchange module and a second-stage bypass heat exchange module which are connected in series front and back; the first-stage bypass heat exchange module is provided with a bypass economizer flue gas inlet, a first-stage bypass heat exchange module flue gas outlet, a first-stage bypass heat exchange module working medium water inlet and a bypass economizer working medium water outlet; the second-stage bypass heat exchange module is provided with a second-stage bypass heat exchange module smoke inlet, a bypass economizer smoke outlet, a bypass economizer working medium water inlet and a second-stage bypass heat exchange module working medium water outlet; the flue gas outlet of the first-stage bypass heat exchange module is directly or indirectly communicated with the flue gas inlet of the second-stage bypass heat exchange module;
the air preheater is provided with an air preheater flue gas inlet, an air preheater flue gas outlet, an air preheater air supply inlet and an air preheater air supply outlet;
The flue heat exchanger is provided with a flue heat exchanger smoke inlet, a flue heat exchanger smoke outlet, a flue heat exchanger working medium water inlet and a flue heat exchanger working medium water outlet; the flue heat exchanger is a dividing wall type heat exchanger;
the desulfurizing tower includes: a desulfurizing tower body and a slurry circulating pump; a slurry pond is arranged at the bottom of the desulfurizing tower body; the lower part of the desulfurizing tower body is provided with a desulfurizing tower flue gas inlet, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet; a desulfurizing tower spraying device is arranged between the desulfurizing tower flue gas inlet and the desulfurizing tower flue gas outlet, the desulfurizing tower spraying device is directly or indirectly communicated with the slurry circulating pump, and the slurry circulating pump is directly or indirectly communicated with the slurry pool; optionally, a desulfurizing tower demister is arranged between the desulfurizing tower spraying device and the desulfurizing tower flue gas outlet;
the spray tower is provided with a spray tower flue gas inlet, a spray tower flue gas outlet, a spray tower heat medium water inlet and a spray tower heat medium water outlet; a spray tower water receiving device is arranged at the bottom of the spray tower; a spray tower water distribution device for heating medium water is arranged between the spray tower flue gas inlet and the spray tower flue gas outlet; the spray tower water distribution device is directly or indirectly communicated with the spray tower heat medium water inlet, and the spray tower water receiving device is directly or indirectly communicated with the spray tower heat medium water outlet;
The blower is provided with a blower inlet and a blower outlet;
the air supply heater is provided with an air supply inlet of the air supply heater, an air supply outlet of the air supply heater, a working medium water inlet of the air supply heater and a working medium water outlet of the air supply heater;
the boiler flue gas outlet is directly or indirectly communicated with the air preheater flue gas inlet and the bypass economizer flue gas inlet at the same time; the flue gas outlet of the air preheater and the flue gas outlet of the bypass economizer are directly or indirectly communicated with the flue gas inlet of the flue heat exchanger; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the flue gas outlet of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet of the spray tower; the flue gas outlet of the spray tower is directly or indirectly communicated with the chimney;
the air supply inlet of the air blower is directly or indirectly communicated with the atmosphere; the air supply outlet of the air supply blower is directly or indirectly communicated with the air supply inlet of the air supply heater; the air supply outlet of the air supply heater is directly or indirectly communicated with the air supply inlet of the air preheater; the air preheater air supply outlet is directly or indirectly communicated with the boiler air supply inlet;
The working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; the flue heat exchanger working medium water outlet is directly or indirectly communicated with the working medium water inlet of the air supply heater;
the spray tower heating medium water outlet is directly or indirectly communicated with the evaporator low-temperature heat source inlet; the low-temperature heat source outlet of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet;
the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; or the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module and the generator high-temperature heat source inlet at the same time, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the bypass economizer;
Optionally, the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module through a bypass header or/and a first bypass deaerator or/and a first bypass water supply pump;
optionally, a spray tower demister is arranged on a flue gas channel between the spray tower water distribution device and the chimney;
optionally, a heat medium water circulating pump is arranged on a heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet or the spray tower heat medium water inlet;
optionally, a high-temperature heat source water pump is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet or the generator high-temperature heat source outlet;
optionally, a cold water pump is connected in series on a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet;
optionally, a dust remover or/and a draught fan are connected in series at the flue gas inlet of the flue heat exchanger or the flue gas outlet of the flue heat exchanger;
optionally, the bypass economizer working medium water outlet is also communicated with a heat user;
optionally, a first desulfurizing tower is connected in series on the flue directly or indirectly communicated with the desulfurizing tower flue gas outlet or the desulfurizing tower flue gas outlet;
Optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger or the working medium water outlet of the flue heat exchanger;
optionally, a bypass feed water pump or/and a bypass deaerator or/and a buffer water tank are arranged on a working medium water channel directly or indirectly communicated with the working medium water inlet of the bypass economizer.
6. A high efficiency absorption heat pump system according to claim 2, further comprising: the boiler comprises a boiler, a bypass economizer, an air preheater, a flue heat exchanger, a desulfurizing tower, a spray tower, a chimney, a blower and a blast heater; wherein,
the boiler is provided with a fuel inlet, a boiler air supply inlet and a boiler flue gas outlet;
the bypass economizer comprises a first-stage bypass heat exchange module and a second-stage bypass heat exchange module which are connected in series front and back; the first-stage bypass heat exchange module is provided with a bypass economizer flue gas inlet, a first-stage bypass heat exchange module flue gas outlet, a first-stage bypass heat exchange module working medium water inlet and a bypass economizer working medium water outlet; the second-stage bypass heat exchange module is provided with a second-stage bypass heat exchange module smoke inlet, a bypass economizer smoke outlet, a bypass economizer working medium water inlet and a second-stage bypass heat exchange module working medium water outlet; the flue gas outlet of the first-stage bypass heat exchange module is directly or indirectly communicated with the flue gas inlet of the second-stage bypass heat exchange module;
The air preheater is provided with an air preheater flue gas inlet, an air preheater flue gas outlet, an air preheater air supply inlet and an air preheater air supply outlet;
the flue heat exchanger is provided with a flue heat exchanger smoke inlet, a flue heat exchanger smoke outlet, a flue heat exchanger working medium water inlet and a flue heat exchanger working medium water outlet; the flue heat exchanger is a dividing wall type heat exchanger;
the desulfurizing tower includes: a desulfurizing tower body and a slurry circulating pump; a slurry pond is arranged at the bottom of the desulfurizing tower body; the lower part of the desulfurizing tower body is provided with a desulfurizing tower flue gas inlet, and the upper part of the desulfurizing tower body is provided with a desulfurizing tower flue gas outlet; a desulfurizing tower spraying device is arranged between the desulfurizing tower flue gas inlet and the desulfurizing tower flue gas outlet, the desulfurizing tower spraying device is directly or indirectly communicated with the slurry circulating pump, and the slurry circulating pump is directly or indirectly communicated with the slurry pool; optionally, a desulfurizing tower demister is arranged between the desulfurizing tower spraying device and the desulfurizing tower flue gas outlet;
the spray tower is provided with a spray tower flue gas inlet, a spray tower flue gas outlet, a spray tower heat medium water inlet and a spray tower heat medium water outlet; a spray tower water receiving device is arranged at the bottom of the spray tower; a spray tower water distribution device for heating medium water is arranged between the spray tower flue gas inlet and the spray tower flue gas outlet; the spray tower water distribution device is directly or indirectly communicated with the spray tower heat medium water inlet, and the spray tower water receiving device is directly or indirectly communicated with the spray tower heat medium water outlet;
The blower is provided with a blower inlet and a blower outlet;
the air supply heater is provided with an air supply inlet of the air supply heater, an air supply outlet of the air supply heater, a working medium water inlet of the air supply heater and a working medium water outlet of the air supply heater;
the boiler flue gas outlet is directly or indirectly communicated with the air preheater flue gas inlet and the bypass economizer flue gas inlet at the same time; the flue gas outlet of the air preheater and the flue gas outlet of the bypass economizer are directly or indirectly communicated with the flue gas inlet of the flue heat exchanger; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the flue gas outlet of the desulfurizing tower is directly or indirectly communicated with the flue gas inlet of the spray tower; the flue gas outlet of the spray tower is directly or indirectly communicated with the chimney;
the air supply inlet of the air blower is directly or indirectly communicated with the atmosphere; the air supply outlet of the air supply blower is directly or indirectly communicated with the air supply inlet of the air supply heater; the air supply outlet of the air supply heater is directly or indirectly communicated with the air supply inlet of the air preheater; the air preheater air supply outlet is directly or indirectly communicated with the boiler air supply inlet;
The working medium water outlet of the air supply heater is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; the flue heat exchanger working medium water outlet is directly or indirectly communicated with the working medium water inlet of the air supply heater;
the spray tower heating medium water outlet is directly or indirectly communicated with the evaporator low-temperature heat source inlet; the low-temperature heat source outlet of the evaporator is directly or indirectly communicated with the spray tower heat medium water inlet;
the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; or the bypass economizer working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; or the working medium outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the downstream generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; or the downstream generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; or the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module and the generator high-temperature heat source inlet at the same time, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the bypass economizer; or the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module and the working medium water inlet of the downstream generator, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the bypass economizer;
Optionally, the working medium water outlet of the second-stage bypass heat exchange module is directly or indirectly communicated with the working medium water inlet of the first-stage bypass heat exchange module through a bypass header or/and a first bypass deaerator or/and a first bypass water supply pump;
optionally, a spray tower demister is arranged on a flue gas channel between the spray tower water distribution device and the chimney;
optionally, a heat medium water circulating pump is arranged on a heat medium water pipeline which is directly or indirectly communicated with the spray tower heat medium water outlet or the spray tower heat medium water inlet;
optionally, a high-temperature heat source water pump is arranged on the high-temperature heat source channel which is directly or indirectly communicated with the generator high-temperature heat source inlet or the generator high-temperature heat source outlet;
optionally, a cold water pump is connected in series on a cold water channel directly or indirectly communicated with the condenser cooling water outlet or the absorber cold water inlet;
optionally, a dust remover or/and a draught fan are connected in series at the flue gas inlet of the flue heat exchanger or the flue gas outlet of the flue heat exchanger;
optionally, the bypass economizer working medium water outlet is also communicated with a heat user;
optionally, a first desulfurizing tower is connected in series on the flue directly or indirectly communicated with the desulfurizing tower flue gas outlet or the desulfurizing tower flue gas outlet;
Optionally, a working medium water pump is arranged on a working medium water channel which is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger or the working medium water outlet of the flue heat exchanger;
optionally, a bypass feed water pump or/and a bypass deaerator or/and a buffer water tank are arranged on a working medium water channel directly or indirectly communicated with the working medium water inlet of the bypass economizer.
7. A high efficiency absorption heat pump system according to claim 3 or 5 wherein the bypass economizer working medium water outlet is in direct or indirect communication with the generator high temperature heat source inlet, the generator high temperature heat source outlet being in direct or indirect communication with the bypass economizer working medium water inlet; the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; a fourth switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the flue heat exchanger;
Or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; and a fifth switching valve is arranged on a branch line from the high-temperature heat source outlet of the generator to the working medium water inlet of the air supply heater, and a sixth switching valve is arranged on a branch line from the working medium water outlet of the flue heat exchanger to the working medium water inlet of the air supply heater.
8. A high efficiency absorption heat pump system according to claim 4 or 6 wherein the bypass economizer working medium water outlet is in direct or indirect communication with the generator high temperature heat source inlet, the generator high temperature heat source outlet being in direct or indirect communication with the bypass economizer working medium water inlet; the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the high-temperature heat source inlet of the generator, and the high-temperature heat source outlet of the generator is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; a fourth switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the flue heat exchanger;
or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the generator high-temperature heat source channel is connected in series with the working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the generator; a fifth switching valve is arranged on a branch line from the high-temperature heat source outlet of the generator to the working medium water inlet of the air supply heater, and a sixth switching valve is arranged on a branch line from the working medium water outlet of the flue heat exchanger to the working medium water inlet of the air supply heater;
Or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the working medium water outlet of the flue heat exchanger is directly or indirectly communicated with the working medium water inlet of the downstream generator, and the generator high-temperature heat source outlet is directly or indirectly communicated with the working medium water inlet of the flue heat exchanger; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the downstream generator; a fourth switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the flue heat exchanger;
or the bypass economizer working medium water outlet is directly or indirectly communicated with the generator high-temperature heat source inlet, and the generator high-temperature heat source outlet is directly or indirectly communicated with the bypass economizer working medium water inlet; the downstream generator high-temperature heat source channel is connected in series with a working medium water channel between the flue heat exchanger working medium water outlet and the air supply heater working medium water inlet, the flue heat exchanger working medium water outlet is directly or indirectly communicated with the downstream generator high-temperature heat source inlet, the generator high-temperature heat source outlet is directly or indirectly communicated with the air supply heater working medium water inlet, and the air supply heater working medium water outlet is directly or indirectly communicated with the flue heat exchanger working medium water inlet; a first switching valve is arranged on a diversion branch from a working medium water outlet of the bypass economizer to a high-temperature heat source inlet of the generator; a second switching valve is arranged on a diversion branch from a high-temperature heat source outlet of the generator to a working medium water inlet of the bypass economizer; a third switching valve is arranged on a diversion branch from a working medium water outlet of the flue heat exchanger to a high-temperature heat source inlet of the downstream generator; and a fifth switching valve is arranged on a branch line from the high-temperature heat source outlet of the generator to the working medium water inlet of the air supply heater, and a sixth switching valve is arranged on a branch line from the working medium water outlet of the flue heat exchanger to the working medium water inlet of the air supply heater.
9. A high efficiency absorption heat pump system according to claim 3 wherein the absorber cold water outlet or the condenser cooling water outlet is also in direct or indirect communication with the flue heat exchanger working fluid water inlet; the working medium water outlet of the flue heat exchanger is also directly or indirectly communicated with a heat user;
or, a first cold water reheater is further provided, and the first cold water reheater is provided with a first cold water reheater inlet and a first cold water reheater outlet; the first cold water reheater inlet is directly or indirectly communicated with the absorber cold water outlet; the outlet of the first cold water reheater is communicated with a hot user;
or, a first flue heat exchanger is also arranged; the first flue heat exchanger is provided with a first flue heat exchanger smoke inlet, a first flue heat exchanger smoke outlet, a first flue heat exchanger working medium water inlet and a first flue heat exchanger working medium water outlet; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the first flue heat exchanger; the flue gas outlet of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the first flue heat exchanger is a dividing wall type heat exchanger; the absorber cold water outlet or the condenser cooling water outlet is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger.
10. A high efficiency absorption heat pump system according to claim 4 wherein the absorber cold water outlet or the condenser cooling water outlet is also in direct or indirect communication with the flue heat exchanger working fluid water inlet; the working medium water outlet of the flue heat exchanger is also directly or indirectly communicated with a heat user;
or, a first cold water reheater is further provided, and the first cold water reheater is provided with a first cold water reheater inlet and a first cold water reheater outlet; the first cold water reheater inlet is directly or indirectly communicated with the absorber cold water outlet; the outlet of the first cold water reheater is communicated with a hot user;
or, a first flue heat exchanger is also arranged; the first flue heat exchanger is provided with a first flue heat exchanger smoke inlet, a first flue heat exchanger smoke outlet, a first flue heat exchanger working medium water inlet and a first flue heat exchanger working medium water outlet; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the first flue heat exchanger; the flue gas outlet of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the first flue heat exchanger is a dividing wall type heat exchanger; the absorber cold water outlet or the condenser cooling water outlet is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger.
11. A high efficiency absorption heat pump system according to claim 5 wherein the absorber cold water outlet or the condenser cooling water outlet is also in direct or indirect communication with the flue heat exchanger working fluid water inlet; the working medium water outlet of the flue heat exchanger is also directly or indirectly communicated with a heat user;
or, a first cold water reheater is further provided, and the first cold water reheater is provided with a first cold water reheater inlet and a first cold water reheater outlet; the first cold water reheater inlet is directly or indirectly communicated with the absorber cold water outlet; the outlet of the first cold water reheater is communicated with a hot user;
or, a first flue heat exchanger is also arranged; the first flue heat exchanger is provided with a first flue heat exchanger smoke inlet, a first flue heat exchanger smoke outlet, a first flue heat exchanger working medium water inlet and a first flue heat exchanger working medium water outlet; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the first flue heat exchanger; the flue gas outlet of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the first flue heat exchanger is a dividing wall type heat exchanger; the absorber cold water outlet or the condenser cooling water outlet is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger.
12. A high efficiency absorption heat pump system according to claim 6 wherein the absorber cold water outlet or the condenser cooling water outlet is also in direct or indirect communication with the flue heat exchanger working fluid water inlet; the working medium water outlet of the flue heat exchanger is also directly or indirectly communicated with a heat user;
or, a first cold water reheater is further provided, and the first cold water reheater is provided with a first cold water reheater inlet and a first cold water reheater outlet; the first cold water reheater inlet is directly or indirectly communicated with the absorber cold water outlet; the outlet of the first cold water reheater is communicated with a hot user;
or, a first flue heat exchanger is also arranged; the first flue heat exchanger is provided with a first flue heat exchanger smoke inlet, a first flue heat exchanger smoke outlet, a first flue heat exchanger working medium water inlet and a first flue heat exchanger working medium water outlet; the flue gas outlet of the flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the first flue heat exchanger; the flue gas outlet of the first flue heat exchanger is directly or indirectly communicated with the flue gas inlet of the desulfurizing tower; the first flue heat exchanger is a dividing wall type heat exchanger; the absorber cold water outlet or the condenser cooling water outlet is also directly or indirectly communicated with the working medium water inlet of the first flue heat exchanger; the working medium water outlet of the first flue heat exchanger is directly or indirectly communicated with a heat user; optionally, a dust remover or/and an induced draft fan are connected in series on a flue gas channel between the flue heat exchanger and the first flue heat exchanger; optionally, a working medium water circulating water pump is arranged on the working medium water channel directly or indirectly communicated with the working medium water outlet of the first flue heat exchanger or the working medium water inlet of the first flue heat exchanger.
13. A high efficiency absorption heat pump system according to claim 3 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
14. A high efficiency absorption heat pump system according to claim 4 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
15. A high efficiency absorption heat pump system according to claim 5 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
16. A high efficiency absorption heat pump system according to claim 6 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
17. A high efficiency absorption heat pump system according to claim 9 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
18. A high efficiency absorption heat pump system according to claim 10 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
19. A high efficiency absorption heat pump system according to claim 11 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
20. A high efficiency absorption heat pump system according to claim 12 further comprising a first supply air heater; the first air supply heater is provided with a first air supply heater air supply inlet, a first air supply heater air supply outlet, a first air supply heater cold water inlet and a first air supply heater cold water outlet; the air supply channel of the first air supply heater is connected in series with an air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the first air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the first air supply heater cold water inlet is directly or indirectly communicated with the condenser cooling water outlet; the first air supply heater cold water outlet is directly or indirectly communicated with the absorber cold water inlet; the first air supply heater is a dividing wall type heat exchanger; optionally, a cold water pump is arranged on a cold water channel which is directly or indirectly communicated with the cold water inlet of the absorber or the cold water outlet of the condenser.
21. A high efficiency absorption heat pump system according to claim 3 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
22. A high efficiency absorption heat pump system according to claim 4 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
23. A high efficiency absorption heat pump system according to claim 5 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
24. A high efficiency absorption heat pump system according to claim 6 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
25. A high efficiency absorption heat pump system according to claim 9 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
26. A high efficiency absorption heat pump system according to claim 10 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
27. A high efficiency absorption heat pump system according to claim 11 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
28. A high efficiency absorption heat pump system according to claim 12 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the air supply outlet of the second air supply heater is directly or indirectly communicated with the air supply inlet of the air supply heater; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
29. A high efficiency absorption heat pump system according to claim 13 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
30. A high efficiency absorption heat pump system according to claim 14 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
31. A high efficiency absorption heat pump system according to claim 15 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
32. A high efficiency absorption heat pump system according to claim 16 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
33. A high efficiency absorption heat pump system according to claim 17 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
34. A high efficiency absorption heat pump system according to claim 18 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
35. A high efficiency absorption heat pump system according to claim 19 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
36. A high efficiency absorption heat pump system according to claim 20 further comprising a second supply air heater; the second air supply heater is provided with a second air supply heater air supply inlet, a second air supply heater air supply outlet, a second air supply heater heating medium water inlet and a second air supply heater heating medium water outlet; the air supply channel of the second air supply heater is connected in series with the air channel which is directly or indirectly communicated with the air supply inlet of the air blower or the air supply outlet of the air blower; the second air supply heater air supply outlet is directly or indirectly communicated with the first air supply heater air supply inlet; the second air supply heater heating medium water inlet is directly or indirectly communicated with the spray tower heating medium water outlet; the second air supply heater heating medium water outlet is directly or indirectly communicated with the spray tower heating medium water inlet; the second air supply heater is a dividing wall type heat exchanger.
37. A high efficiency absorption heat pump system according to any one of claims 3-6, 9-36, further comprising a steam turbine, a condenser, a condensate pump, a first low pressure heater, a deaerator, a feed pump, and a high pressure heater;
the steam turbine is provided with a steam turbine steam inlet, a steam turbine steam outlet, a steam turbine high-pressure steam extraction outlet and a steam turbine low-pressure steam extraction outlet;
the condenser is provided with a condenser steam inlet and a condenser working medium water outlet;
the condensate pump is provided with a condensate pump inlet and a condensate pump outlet;
the first low-pressure heater is provided with a first low-pressure heater working medium water inlet and a first low-pressure heater working medium water outlet;
the low-pressure heater is provided with a low-pressure heater working medium water inlet, a low-pressure heater working medium water outlet and a low-pressure heater steam extraction inlet;
the deaerator is provided with a deaerator working medium water inlet and a deaerator working medium water outlet;
the water feed pump is provided with a water feed pump inlet and a water feed pump outlet;
the high-pressure heater is provided with a high-pressure heater working medium water inlet, a high-pressure heater working medium water outlet and a high-pressure heater steam extraction inlet;
The boiler is also provided with a boiler working medium water inlet and a boiler steam outlet;
the boiler steam outlet is directly or indirectly communicated with the steam inlet of the steam turbine; the steam outlet of the steam turbine is directly or indirectly communicated with the steam inlet of the condenser; the condenser working medium water outlet is directly or indirectly communicated with the condensate pump inlet; the outlet of the condensate pump is directly or indirectly communicated with the working medium water inlet of the first low-pressure heater; the first low-pressure heater working medium water outlet is directly or indirectly communicated with the low-pressure heater working medium water inlet; the low-pressure heater working medium water outlet is directly or indirectly communicated with the deaerator working medium water inlet; the working medium water outlet of the deaerator is directly or indirectly communicated with the inlet of the water feeding pump; the water feed pump outlet is directly or indirectly communicated with the working medium water inlet of the high-pressure heater; the high-pressure heater working medium water outlet is directly or indirectly communicated with the boiler working medium water inlet; the low-pressure heater steam extraction inlet is directly or indirectly communicated with the steam turbine low-pressure steam extraction outlet; the high-pressure heater steam extraction inlet is directly or indirectly communicated with the steam turbine high-pressure steam extraction outlet; the bypass economizer working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the water supply pump outlet; the bypass economizer working medium water outlet is directly or indirectly communicated with the boiler working medium water inlet;
The low-pressure heater is one-stage or multi-stage low-pressure heater; the high-pressure heater is a one-stage or multi-stage high-pressure heater; the first low-pressure heater is a one-stage or multi-stage low-pressure heater; the high-pressure steam extraction outlet of the steam turbine is one-stage or multi-stage; the low-pressure steam extraction outlet of the steam turbine is one-stage or multi-stage;
optionally, the bypass economizer working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the feed pump outlet through the flue heat exchanger; the bypass economizer working medium water inlet is directly or indirectly communicated with the flue heat exchanger working medium water outlet; the flue heat exchanger working medium water inlet is directly or indirectly communicated with the first low-pressure heater working medium water outlet or the water supply pump outlet.
38. The efficient absorption heat pump system according to any one of claims 3-6,9-36, wherein the spray tower is arranged above the desulfurizing tower, the desulfurizing tower and the spray tower are connected through a liquid collecting device to form a desulfurizing and spraying integrated structure, and the slurry pool, the desulfurizing tower flue gas inlet, the desulfurizing tower spray device, the liquid collecting device, the spray tower water distributing device and the spray tower flue gas outlet are arranged inside the desulfurizing and spraying integrated structure in sequence from bottom to top; the liquid collecting device is of a multifunctional integrated structure and comprises a flue gas outlet of the desulfurizing tower, a flue gas inlet of the spraying tower and a water receiving device of the spraying tower, flue gas from the desulfurizing tower can enter the spraying tower through the liquid collecting device, and heat medium water from the spraying tower falls into the liquid collecting device to be collected and is guided out of the liquid collecting device through a heat medium water outlet of the spraying tower so as not to flow into the desulfurizing tower.
39. The efficient absorption heat pump system according to claim 37, wherein the spray tower is arranged above the desulfurizing tower, the desulfurizing tower and the spray tower are connected through a liquid collecting device to form a desulfurizing and spraying integrated structure, and the slurry pool, the desulfurizing tower flue gas inlet, the desulfurizing tower spray device, the liquid collecting device, the spray tower water distributing device and the spray tower flue gas outlet are arranged inside the desulfurizing and spraying integrated structure in sequence from bottom to top; the liquid collecting device is of a multifunctional integrated structure comprising a flue gas outlet of the desulfurizing tower, a flue gas inlet of the spraying tower and a water receiving device of the spraying tower, flue gas from the desulfurizing tower can enter the spraying tower through the liquid collecting device, and heat medium water from the spraying tower falls into the liquid collecting device to be collected and is guided out of the liquid collecting device through the heat medium water outlet of the spraying tower so as not to flow into the desulfurizing tower; optionally, a filler layer is arranged between the liquid collecting device and the spray tower water distribution device.
40. A high efficiency absorption heat pump system according to claim 38 wherein the liquid collecting device is a liquid collecting and demisting integrated structure with demisting function, the liquid collecting and demisting integrated structure comprising a liquid collecting chassis, a gas lift pipe, and a gas lift cap; the liquid collecting chassis is provided with a plurality of vent holes, the vent holes are correspondingly provided with the gas lifting pipes, the top ends of the gas lifting pipes are provided with gas lifting caps, and gas lifting channels for the circulation of flue gas are arranged on the gas lifting caps or between the gas lifting caps and the top ends of the gas lifting pipes or on the pipe walls of the upper sections of the gas lifting pipes; a guide vane or a cyclone is arranged in the gas lift pipe, or/and a demisting pipe is connected below the gas lift pipe or arranged in the gas lift pipe, and the guide vane or the cyclone is arranged in the demisting pipe; the gas lifting pipe and the demisting pipe are of a split structure or an integrated structure; the liquid collecting chassis is provided with a water retaining edge or is in sealing connection with the inner wall of the tower body of the desulfurization spraying integrated structure, the inner wall of the desulfurization spraying integrated structure is used as the water retaining edge, an upward opening space enclosed between the liquid collecting chassis and the water retaining edge is used as a spray tower water receiving device, and the spray tower water receiving device is directly or indirectly communicated with a spray tower heating medium water outlet; optionally, the lift cap adopts a tower-type shutter structure, the outer diameter of the lift cap and the outer diameter of the lift pipe are smaller than or equal to the inner diameter of the vent hole on the liquid collecting chassis, and the lift pipe and the lift cap are installed in a mode of being detached from the liquid collecting chassis; optionally, a filler layer is arranged between the liquid collecting device and the spray tower water distribution device.
41. A high efficiency absorption heat pump system according to claim 39 wherein the liquid collecting device is a liquid collecting and demisting integrated structure with demisting function, the liquid collecting and demisting integrated structure comprising a liquid collecting chassis, a gas lift pipe, and a gas lift cap; the liquid collecting chassis is provided with a plurality of vent holes, the vent holes are correspondingly provided with the gas lifting pipes, the top ends of the gas lifting pipes are provided with gas lifting caps, and gas lifting channels for the circulation of flue gas are arranged on the gas lifting caps or between the gas lifting caps and the top ends of the gas lifting pipes or on the pipe walls of the upper sections of the gas lifting pipes; a guide vane or a cyclone is arranged in the gas lift pipe, or/and a demisting pipe is connected below the gas lift pipe or arranged in the gas lift pipe, and the guide vane or the cyclone is arranged in the demisting pipe; the gas lifting pipe and the demisting pipe are of a split structure or an integrated structure; the liquid collecting chassis is provided with a water retaining edge or is in sealing connection with the inner wall of the tower body of the desulfurization spraying integrated structure, the inner wall of the desulfurization spraying integrated structure is used as the water retaining edge, an upward opening space enclosed between the liquid collecting chassis and the water retaining edge is used as a spray tower water receiving device, and the spray tower water receiving device is directly or indirectly communicated with a spray tower heating medium water outlet; optionally, the lift cap adopts a tower-type shutter structure, the outer diameter of the lift cap and the outer diameter of the lift pipe are smaller than or equal to the inner diameter of the vent hole on the liquid collecting chassis, and the lift pipe and the lift cap are installed in a mode of being detachable from the liquid collecting chassis.
42. A high efficiency absorption heat pump system according to any one of claims 3-6,9-36 wherein a bypass flue gas control baffle is provided on the bypass economizer flue gas inlet or the flue gas diversion branch of the bypass economizer flue gas outlet for adjusting the flue gas flow into the bypass economizer flue gas passage.
43. A high efficiency absorption heat pump system according to claim 37 wherein a bypass flue gas control baffle is provided on the flue gas diversion branch of the bypass economizer flue gas inlet or the bypass economizer flue gas outlet for adjusting the flue gas flow into the bypass economizer flue gas passage.
44. A high efficiency absorption heat pump system according to claim 38 wherein a bypass flue gas control baffle is provided on the flue gas diversion branch of the bypass economizer flue gas inlet or the bypass economizer flue gas outlet for adjusting the flue gas flow into the bypass economizer flue gas passage.
45. A high efficiency absorption heat pump system according to claim 39 wherein a bypass flue gas control baffle is provided on the flue gas diversion branch of the bypass economizer flue gas inlet or the bypass economizer flue gas outlet for adjusting the flue gas flow into the bypass economizer flue gas passage.
46. The efficient absorption heat pump system according to claim 40, wherein a bypass flue gas control baffle is provided on a flue gas diversion branch of the bypass economizer flue gas inlet or the bypass economizer flue gas outlet for adjusting a flue gas flow rate into the bypass economizer flue gas channel.
47. A high efficiency absorption heat pump system according to claim 41 wherein a bypass flue gas control baffle is provided on the bypass economizer flue gas inlet or the bypass economizer flue gas outlet flue gas diversion branch for adjusting the flow of flue gas into the bypass economizer flue gas passage.
48. A high efficiency absorption heat pump system according to any one of claims 1-6, wherein the high efficiency absorption heat pump system employs a lithium bromide solution or ammonia water as an absorbent solution; water or an aqueous solution is used as the refrigerant.
49. A high efficiency absorption heat pump system according to any one of claims 1-6 wherein the level of the last to the next sub-generator of each generator increases in sequence.
50. A high efficiency absorption heat pump system according to any one of claims 1-6 wherein each sub-generator of each generator is of unitary construction with a separator separating adjacent sub-generators of each generator.
51. A high efficiency absorption heat pump system according to claim 3 or 4 wherein the bypass economizer has two or more heat exchange modules and their series/parallel switching arrangements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220176845 | 2022-01-21 | ||
| CN2022201768456 | 2022-01-21 |
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| Publication Number | Publication Date |
|---|---|
| CN220187131U true CN220187131U (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221730157.6U Active CN220187131U (en) | 2022-01-21 | 2022-07-06 | Efficient absorption heat pump system |
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| Country | Link |
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| CN (1) | CN220187131U (en) |
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2022
- 2022-07-06 CN CN202221730157.6U patent/CN220187131U/en active Active
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