CN113551536A - Water-collecting and heat-supplying system for flue gas of aluminum hydroxide roasting furnace - Google Patents
Water-collecting and heat-supplying system for flue gas of aluminum hydroxide roasting furnace Download PDFInfo
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- CN113551536A CN113551536A CN202110895051.5A CN202110895051A CN113551536A CN 113551536 A CN113551536 A CN 113551536A CN 202110895051 A CN202110895051 A CN 202110895051A CN 113551536 A CN113551536 A CN 113551536A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
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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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- 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]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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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
- 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]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention belongs to the technical field of aluminum oxide production, and particularly relates to a flue gas water-receiving and heat-supplying system of an aluminum hydroxide roasting furnace. The deep recovery system and the deep recovery method for the flue gas waste heat of the aluminum hydroxide roasting furnace achieve the purpose of the invention comprise a steam generator, an absorber, a solution pump, a heat exchanger, a regenerator, a condenser, an expansion valve, a heat consumer and a water pump. The system deeply recovers the flue gas waste heat of the aluminum hydroxide roasting furnace, and deeply recovers water resources and latent heat in the flue gas by utilizing the water receiving system and the heat pump system, thereby realizing greater economic and environmental effects.
Description
Technical Field
The invention belongs to the field of heat energy utilization, and particularly relates to a flue gas water-receiving and heat-supplying system for an aluminum hydroxide roasting furnace.
Background
At present, the flue gas waste heat recovery technology of the aluminum hydroxide roasting furnace only utilizes the temperature range of 160-110 ℃ of flue gas, and only recovers the sensible heat of the flue gas due to the dew point high and low-temperature corrosion characteristics of the flue gas. However, the flue gas of the roasting furnace has the characteristic of higher moisture, and the water resource and latent heat in the flue gas are deeply recovered, so that the greater economic and environmental effects can be realized.
Therefore, it is necessary to design a flue gas water-receiving and heat-supplying system for an aluminum hydroxide roasting furnace to solve the above problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a flue gas water-receiving and heat-supplying system for an aluminum hydroxide roasting furnace, which is used for deeply recycling the flue gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flue gas water-receiving and heat-supplying system of an aluminum hydroxide roasting furnace comprises a water-receiving system and a heat pump system, wherein the water-receiving system is a steam generator. The heat pump system comprises a steam generator, an absorber, a solution pump, a heat exchanger, a regenerator, a condenser, an expansion valve, a heat consumer and a water pump. The steam generator simultaneously belongs to a heat pump system of a water receiving system.
In the water receiving system, a flue gas inlet of the steam generator is communicated with a flue of the aluminum hydroxide roasting furnace, a flue gas outlet of the steam generator is communicated with a chimney, and the steam generator is provided with a flue gas condensate water outlet. The steam generator cools the 160 ℃ flue gas coming out of the flue of the aluminum hydroxide roasting furnace to 30 ℃, the moisture in the flue gas is condensed to form flue gas condensate water, the flue gas condensate water is recovered through a flue gas condensate water outlet of the steam generator, and the released heat is used for heating refrigerant water, so that the water is subjected to gas-liquid phase change and heat absorption evaporation.
In the heat pump system, a refrigerant inlet of a steam generator is communicated with an outlet of an expansion valve, a refrigerant outlet of the steam generator is communicated with a refrigerant inlet of an absorber, a concentrated solution inlet of the absorber is communicated with a concentrated solution outlet of a heat exchanger, a dilute solution outlet of the absorber is communicated with an inlet of a solution pump, an outlet of the solution pump is communicated with a dilute solution inlet of the heat exchanger, a concentrated solution outlet of a regenerator is communicated with a concentrated solution inlet of the heat exchanger, a dilute solution inlet of the regenerator is communicated with a dilute solution outlet of the heat exchanger, a refrigerant outlet of the regenerator is communicated with an inlet of a condenser, the regenerator is provided with an external steam inlet and a condensed water outlet, an outlet of the condenser is communicated with an inlet of the expansion valve, the condenser and the absorber are respectively provided with a hot water supply inlet and outlet, and hot water heated by the condenser and the absorber is gathered and then supplied to a hot water user through a water pump for cyclic use. The refrigerant is water, and the concentrated solution and the dilute solution are both absorbent lithium bromide solutions.
In the absorber, water vapor is absorbed by the strong solution of lithium bromide entering the absorber, the absorber changes from the strong solution to a weak solution and gives off heat, which is used to heat the hot water entering from the hot water inlet of the absorber, which is then passed out of the hot water outlet of the absorber. The exothermic dilute solution enters a solution pump.
The solution pump pressurizes the low pressure dilute solution from the absorber, and the low pressure dilute solution is sent to the regenerator after passing through the heat exchanger. In the regenerator, the heat of the external high-temperature steam introduced from the external steam inlet is used for heating the entering dilute solution, so that the water in the dilute solution is evaporated. The external high-temperature steam becomes condensed water after releasing heat and is discharged from a condensed water outlet of the regenerator; the dilute solution is evaporated to become a concentrated solution, is discharged from a concentrated solution outlet of the regenerator, and enters an absorber through a heat exchanger to complete the circulation of the absorbent lithium bromide solution; the water vapor evaporated from the weak solution is discharged from the regenerator refrigerant outlet.
In the heat exchanger, carry out the heat interaction from the dilute solution of lithium bromide that solution pump pressure boost let in and the concentrated solution of following regenerator exhaust, the concentrated solution temperature after external high temperature steam heating is higher, and the dilute solution temperature that has undergone the exothermic process of absorbing water in the absorber is lower, and the partial heat of concentrated solution shifts to dilute solution, carries out the heating of certain degree in advance to dilute solution, can reduce external high temperature steam quantity.
The water vapor discharged from the refrigerant outlet of the regenerator enters a condenser to condense the water vapor and release heat, the part of heat is used for heating the hot water entering from the hot water inlet of the condenser, and the hot water flows out through the outlet, thereby realizing the purpose of heat supply.
The hot water flowing out of the hot water outlets of the absorber and the condenser can be supplied to a heat user through the water pump after being gathered for supplying heat to the heat user, and the cold water after supplying heat can be divided and introduced into the hot water inlets of the condenser and the absorber, so that the circulation of the hot water is realized.
The condensed water from the condenser enters an expansion valve, the expansion valve makes the condensed water become saturated low-temperature low-pressure water after expansion, the low-temperature low-pressure water enters a steam generator again, the heat released by the flue gas with the temperature of 160 ℃ coming out from the flue of the aluminum hydroxide roasting furnace is converted into water vapor as described above, and the water vapor enters an absorber, so that the circulation process of the refrigerant is realized.
The processes are continuously and synchronously carried out, and the precedence relationship among the steps does not exist.
The flue gas discharged by the aluminum hydroxide roasting furnace contains a large amount of water vapor, has a large amount of latent heat and considerable water resources, and can realize continuous and effective condensation in a steam generator made of a shell-and-tube heat exchanger and emit enough heat to enable a refrigerant to generate gas-liquid phase change.
The invention has the beneficial effects that:
the flue gas of the deep recovery roasting furnace contains a large amount of water vapor and latent heat, is used for the process of supplying heat to a heat user by a heat pump system, is an energy-saving project for changing waste into valuable, not only reduces the comprehensive energy consumption of the alumina production to the maximum extent and reduces the production cost of the alumina, but also realizes the energy conservation and emission reduction of the alumina production to the maximum extent, and has great significance to the country, the society and the enterprise.
Drawings
FIG. 1 is a schematic diagram of a flue gas water-collecting power generation system of an aluminum hydroxide roasting furnace according to the present invention;
in the figure, 1 is a steam generator, 2 is an absorber, 3 is a solution pump, 4 is a heat exchanger, 5 is a regenerator, 6 is a condenser, 7 is an expansion valve, 8 is a water pump, and 9 is a heat consumer;
a-160 ℃ flue gas, B-30 ℃ flue gas, C-hot water supply inlet water, D-hot water supply outlet water, E-flue gas condensate water, F-external high-temperature steam, G-low-temperature low-pressure steam, H-low-temperature low-pressure dilute solution, I-low-temperature high-pressure dilute solution, J-medium-temperature high-pressure dilute solution, K-high-temperature high-pressure steam, L-low-temperature high-pressure water, M-low-temperature low-pressure water, N-high-temperature high-pressure concentrated solution, O-low-temperature high-pressure concentrated solution and P-steam condensate water.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, a flue gas water-receiving and heat-supplying system for an aluminum hydroxide roasting furnace comprises a steam generator 1, an absorber 2, a solution pump 3, a heat exchanger 4, a regenerator 5, a condenser 6, an expansion valve 7, a water pump 8 and a heat consumer 9.
The steam generator 1 simultaneously belongs to a water receiving system heat pump system, in the water receiving system, a flue gas inlet of the steam generator 1 is communicated with a flue of the roasting furnace, and a flue gas outlet is communicated with a chimney. The steam generator 1 is provided with a flue gas condensate water outlet.
In the heat pump system, a refrigerant inlet of a steam generator 1 is communicated with an outlet of an expansion valve 7, a refrigerant outlet of the steam generator 1 is communicated with a refrigerant inlet of an absorber 2, a concentrated solution inlet of the absorber 2 is communicated with a concentrated solution outlet of a heat exchanger 4, an absorbent dilute solution outlet of the absorber 2 is communicated with an inlet of a solution pump 3, an outlet of the solution pump 3 is communicated with a dilute solution inlet of the heat exchanger 4, a concentrated solution outlet of a regenerator 5 is communicated with a concentrated solution inlet of the heat exchanger 4, a dilute solution inlet of the regenerator 5 is communicated with a dilute solution outlet of the heat exchanger 4, a refrigerant outlet of the regenerator 5 is communicated with an inlet of a condenser 6, the regenerator 5 is provided with an external steam inlet and a condensed water outlet, an outlet of the condenser 6 is communicated with an inlet of the expansion valve 7, the condenser 6 and the absorber 2 are respectively provided with a hot water supply inlet and outlet, and hot water heated by the condenser 6 and the absorber 2 is supplied to a heat user 9 through a water pump 8 for cycle use.
The steam generator 1 is a shell-and-tube heat exchanger, the shell pass of which is a flue gas channel, and the tube pass of which is a refrigerant (water) channel.
The heat exchange tube of the steam generator 1 is made of fluoroplastic. The fluoroplastic heat exchange tube adopts a hose with a small diameter to form a heat transfer component, can be used for heat exchange of various strong corrosive media with the working temperature of below 200 ℃, and has extremely stable chemical properties and particularly good corrosion resistance. The fluoroplastic pipe has smooth wall surface, moderate flexibility and slight vibration during use, so that scaling is not easy to occur. The fluoroplastic heat exchanger has small volume and compact structure, and the heat transfer area in unit volume of the equipment is more than 4 times that of a shell-and-tube heat exchanger with a metal tube. The flexible fluoroplastic pipe can be safely worked under the impact and vibration of fluid, and the pipe bundle can be made into various special shapes as required.
The method for using the flue gas water-collecting and heat-supplying system of the aluminum hydroxide roasting furnace comprises the following steps:
the temperature of the flue gas A at 160 ℃ is reduced to the flue gas B at 30 ℃ through the steam generator 1, moisture in the flue gas is condensed to form flue gas condensate E, the flue gas condensate E is recovered through a flue gas condensate outlet, and heat is released to heat the refrigerant low-temperature low-pressure water M, so that the low-temperature low-pressure water M is subjected to gas-liquid phase change to form low-temperature low-pressure water vapor G.
The low-temperature low-pressure water vapor G is absorbed by a low-temperature high-pressure concentrated solution O of an absorbent lithium bromide in an absorber 2, the absorbent is changed into a low-temperature low-pressure dilute solution H from the low-temperature high-pressure concentrated solution O, the absorber releases heat to heat hot water inlet water C, a solution pump pressurizes the low-temperature low-pressure dilute solution H from the absorber to form a low-temperature high-pressure dilute solution I, the low-temperature high-pressure dilute solution I is converted into a medium-temperature high-pressure dilute solution G through a heat exchanger 4, and the medium-temperature high-pressure dilute solution G is sent to a regenerator 5.
In the regenerator 5, the heat of the external high-temperature steam F introduced from the external steam inlet is used for heating the entering medium-temperature high-pressure dilute solution G, so that the water in the dilute solution is evaporated. The external high-temperature steam F becomes condensed water after releasing heat and is discharged from a condensed water outlet of the regenerator; the dilute solution is evaporated to become a high-temperature high-pressure concentrated solution N, the high-temperature high-pressure concentrated solution N is discharged from a concentrated solution outlet of the regenerator, and the high-temperature high-pressure concentrated solution N is converted into a low-temperature high-pressure concentrated solution O through a heat exchanger and enters an absorber to complete the circulation of the absorbent lithium bromide solution; the high-temperature and high-pressure vapor K evaporated from the dilute solution is discharged from a regenerator refrigerant outlet.
In the heat exchanger, the low-temperature high-pressure dilute solution I which is pressurized and introduced from the solution pump and the high-temperature high-pressure concentrated solution N which is discharged from the regenerator are subjected to heat exchange, are respectively converted into a medium-temperature high-pressure dilute solution J and a low-temperature high-pressure concentrated solution O, and respectively enter the regenerator 5 and the absorber 2.
High-temperature and high-pressure steam K discharged from a regenerator refrigerant outlet enters the condenser 6 to condense the steam to release heat, the part of heat is used for heating hot water entering from a condenser hot water inlet, and the hot water flows out through an outlet to realize the purpose of heat supply.
Hot water outlet water D flowing out of hot water outlets of the absorber and the condenser can be supplied to a hot user 9 through a water pump 8 after being gathered for supplying heat for the hot user, and cold water (hot water inlet water C) after supplying heat can be divided into hot water inlets of the condenser and the absorber, so that hot water supply circulation is realized.
The condensed water from the condenser enters an expansion valve 7, the expansion valve 7 expands the condensed water to become saturated low-temperature low-pressure water M, and the low-temperature low-pressure water M enters the steam generator 1, and then is converted into low-temperature low-pressure steam G to enter the absorber through the heat released by the flue gas a with the temperature of 160 ℃ coming out of the flue of the aluminum hydroxide roasting furnace as described above, so that the circulation process of the refrigerant is realized.
It should be understood by those skilled in the art that the low temperature, low pressure, medium temperature, high pressure, etc. of the refrigerant (water or water vapor) and the absorbent (lithium bromide solution, abbreviated as solution) in the present specification and this embodiment are all relative to the substance, for example, the temperature of the high temperature solution is greater than that of the medium temperature solution, and the temperature of the medium temperature solution is greater than that of the low temperature solution, and the specific values are determined by practical situations; the flue gas with the temperature of 160 ℃ and the flue gas with the temperature of 30 ℃ only represent approximate temperatures of the flue gas, and do not represent the limitation on specific temperatures of the flue gas due to different practical situations.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (3)
1. The utility model provides an aluminium hydroxide bakes burning furnace flue gas over a slow fire and receives water heating system which characterized in that: the system comprises a water receiving system and a heat pump system, wherein the water receiving system is a steam generator, the heat pump system comprises a steam generator, an absorber, a solution pump, a heat exchanger, a regenerator, a condenser, an expansion valve, a heat consumer and a water pump, and the steam generator simultaneously belongs to the water receiving system heat pump system;
in the water receiving system, a flue gas inlet of the steam generator is communicated with a flue of the aluminum hydroxide roasting furnace, a flue gas outlet of the steam generator is communicated with a chimney, and the steam generator is provided with a flue gas condensate water outlet;
in the heat pump system, a refrigerant inlet of a steam generator is communicated with an outlet of an expansion valve, a refrigerant outlet of the steam generator is communicated with a refrigerant inlet of an absorber, a concentrated solution inlet of the absorber is communicated with a concentrated solution outlet of a heat exchanger, a dilute solution outlet of the absorber is communicated with an inlet of a solution pump, an outlet of the solution pump is communicated with a dilute solution inlet of the heat exchanger, a concentrated solution outlet of a regenerator is communicated with a concentrated solution inlet of the heat exchanger, a dilute solution inlet of the regenerator is communicated with a dilute solution outlet of the heat exchanger, a refrigerant outlet of the regenerator is communicated with an inlet of a condenser, the regenerator is provided with an external steam inlet and a condensed water outlet, an outlet of the condenser is communicated with an inlet of the expansion valve, the condenser and the absorber are respectively provided with a hot water supply inlet and outlet, and hot water heated by the condenser and the absorber is gathered and then supplied to a hot water user through a water pump for cyclic use.
2. The flue gas water-receiving and heat-supplying system of the aluminum hydroxide roasting furnace according to claim 1, characterized in that: the steam generator is a shell-and-tube heat exchanger, the shell pass of the steam generator is a flue gas channel, and the tube pass of the steam generator is a refrigerant water channel.
3. The flue gas water-receiving and heat-supplying system of the aluminum hydroxide roasting furnace according to claim 1 or 2, characterized in that: the heat exchange tube of the steam generator is made of fluoroplastic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110895051.5A CN113551536B (en) | 2021-08-05 | 2021-08-05 | Water-collecting and heat-supplying system for flue gas of aluminum hydroxide roasting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110895051.5A CN113551536B (en) | 2021-08-05 | 2021-08-05 | Water-collecting and heat-supplying system for flue gas of aluminum hydroxide roasting furnace |
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| CN113551536B CN113551536B (en) | 2023-03-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110132008A1 (en) * | 2008-01-08 | 2011-06-09 | Beijing Lianliyuan Technology Co., Ltd. | Absorption heat pump systems and methods for improving energy grade of low temperature waste heat |
| CN109163477A (en) * | 2018-08-03 | 2019-01-08 | 西安交通大学 | A kind of absorption type heat pump system of gas fired-boiler fume afterheat and condensate-water polishing |
| CN211781371U (en) * | 2019-11-11 | 2020-10-27 | 华北电力大学 | Heat pump heating system using desulfurization circulating slurry and steam turbine exhaust steam as heat sources |
| CN113007921A (en) * | 2021-04-01 | 2021-06-22 | 煤科院节能技术有限公司 | Boiler waste heat cascade utilization and deep water heat recovery system based on absorption heat pump |
-
2021
- 2021-08-05 CN CN202110895051.5A patent/CN113551536B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110132008A1 (en) * | 2008-01-08 | 2011-06-09 | Beijing Lianliyuan Technology Co., Ltd. | Absorption heat pump systems and methods for improving energy grade of low temperature waste heat |
| CN109163477A (en) * | 2018-08-03 | 2019-01-08 | 西安交通大学 | A kind of absorption type heat pump system of gas fired-boiler fume afterheat and condensate-water polishing |
| CN211781371U (en) * | 2019-11-11 | 2020-10-27 | 华北电力大学 | Heat pump heating system using desulfurization circulating slurry and steam turbine exhaust steam as heat sources |
| CN113007921A (en) * | 2021-04-01 | 2021-06-22 | 煤科院节能技术有限公司 | Boiler waste heat cascade utilization and deep water heat recovery system based on absorption heat pump |
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| CN113551536B (en) | 2023-03-24 |
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