CN109945224A - Low temperature heat system - Google Patents
Low temperature heat system Download PDFInfo
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- CN109945224A CN109945224A CN201910204364.4A CN201910204364A CN109945224A CN 109945224 A CN109945224 A CN 109945224A CN 201910204364 A CN201910204364 A CN 201910204364A CN 109945224 A CN109945224 A CN 109945224A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 249
- 239000000498 cooling water Substances 0.000 claims abstract description 87
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 238000010521 absorption reaction Methods 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000003546 flue gas Substances 0.000 claims abstract description 44
- 239000002918 waste heat Substances 0.000 claims abstract description 30
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 49
- 238000011084 recovery Methods 0.000 claims description 21
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 12
- 230000008901 benefit Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention belongs to using energy source equipment technical field more particularly to a kind of low temperature heat systems.The system includes absorption heat pump, low-temperature flue gas heat exchanger and condenser, and absorption heat pump is built-in with generator, evaporator and condenser；The condensation-water drain of condenser is connected with boiler feed water mouth, and low-temperature flue gas heat exchanger is connected with the flue of boiler, and the hot water outlet of low-temperature flue gas heat exchanger is connected with the hot water inlet of generator；Condenser is connected with the exhaust pipe of steam turbine, and the cooling water outlet of condenser is connected with the cooling water inlet of evaporator, and the condensation-water drain of condenser is connected with the condensation water inlet of condenser.The afterheat utilizing system is capable of the waste heat of reasonable utilization low-temperature flue gas waste heat and cooling circulating water, boiler will be fed using the condensed water after waste-heat heating, to which the low-quality waste heat in industrial production to be continuously converted into the available energy of production system, help to reduce heat energy loss when industrial production.
Description
Technical field
The invention belongs to using energy source equipment technical field more particularly to a kind of low temperature heat systems.
Background technique
Boiler is to be commonly used in provide the equipment of thermal energy, is chiefly used in the rows such as metallurgy, petrochemical industry, thermoelectricity and building materials manufacture
Industry, for boiler heating system, a more ring of thermal loss when the heat loss due to exhaust gas of boiler is boiler operatiopn heat supply
How section, therefore, reduce the heat loss due to exhaust gas of boiler, particularly important for economy that is energy saving, improving industry production.This
Outside, in most cases, need to be equipped with when setting boiler heats circulation cooling device provide cooling water to heat production or
Heating equipment carries out cooling down, and temperature increases after cooling water coke slurry heat, equally can also lose the heat of part.
In recent years, the cooling circulating water waste heat of thermal power plant etc. is used as the heat source of northern area winter heating, and application by
It is gradually generalized, still, popularization of this UTILIZATION OF VESIDUAL HEAT IN means in vast southern area is but restricted.Due to Industrial Boiler and fire
The energy consumption significant portion of electric system etc. is converted to low-quality waste heat, in this way, if can continuously convert the low-quality waste heat in this part
At production system available energy and generate economic benefit, just to rationally being provided using waste heat caused by the industrial premises such as thermal power plant
Another thinking.
Summary of the invention
The purpose of the present invention is to provide a kind of low temperature heat systems, it is intended to solve boiler smoke in the prior art
The technical issues of waste heat and cooling circulating water waste heat are not used appropriately.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of low temperature heat system, comprising:
Absorption heat pump, absorption heat pump are internally provided with generator, evaporator and condenser, the condensed water of condenser
Outlet is connected by the water inlet of boiler in Recovery of the hot water Guan Yuyu industrial premises；
Low-temperature flue gas heat exchanger is connected to replace the waste heat of low-temperature flue gas in flue and generate height for the flue with boiler
Warm heat medium water, the hot water outlet of low-temperature flue gas heat exchanger are connected with the hot water inlet of generator；
Condenser arranges steam turbine for being connected with the condensing water conduit of steamer in industrial premises and passing through cooling circulating water
Steam out is condensed into condensed water, and the cooling water outlet of condenser is connected with the cooling water inlet of evaporator, the condensation of condenser
Water out is connected with the condensation water inlet of condenser.
Further, low temperature heat system further includes being set between low-temperature flue gas heat exchanger and absorption heat pump
Heating agent water circulation pipe；Heating agent water circulation pipe includes heat medium water water inlet pipe and heat medium water return pipe, the connection of heat medium water water inlet pipe
The hot water outlet of low-temperature flue gas heat exchanger and the hot water inlet of generator, heat medium water return pipe be connected to generator cooling water outlet and
The cooling water inlet of low-temperature flue gas heat exchanger.
Further, heating agent water pump and heating agent water tank, heating agent water tank are additionally provided with along water (flow) direction on heat medium water water inlet pipe
It is connected by heating agent shunt valve with heat medium water return pipe.
Further, low temperature heat system further includes that the cooling water being set between condenser and absorption heat pump follows
Endless tube road；Cooling water circulation pipe includes cooling water inlet pipe and cooling water return pipe, and cooling water inlet pipe is connected to condenser
The cooling water inlet of cooling water outlet and evaporator, cooling water return pipe be connected to evaporator cooling water outlet and condenser it is cold
But water inlet.
Further, low temperature heat system further includes that the condensed water that is set between condenser and absorption heat pump is defeated
Water pipe, condensed water water-supply-pipe are connected to the condensation-water drain of condenser and the condensation water inlet of condenser.
Further, low temperature heat system further includes Recovery of the hot water pipe, and Recovery of the hot water pipe is connected to the condensation of condenser
The water inlet of water out and boiler is provided between condensed water water-supply-pipe and Recovery of the hot water pipe and is communicated with condensed water water-supply-pipe and heat
The condensed water shunt valve of water recovery tube, condensed water water-supply-pipe are provided on the pipeline section between condenser and condensed water shunt valve
Condensate pump, condensed water water-supply-pipe are provided with condenser inlet valve on the pipeline section between condenser and condensed water shunt valve,
Condenser bypass valve is provided on condensed water shunt valve.
Further, at least one low-pressure heater, and at least one low-pressure heater are provided on Recovery of the hot water pipe
Steam inlet for being connected with the exhaust pipe of steam turbine.
Further, it is additionally provided with and removes on pipeline section of the Recovery of the hot water pipe between low-pressure heater and the water inlet of boiler
Oxygen device.
Further, low temperature heat system further includes heating agent heat source supply pipe, and heating agent heat source feeds the input end of pipe
It is connected to for the exhaust pipe with steam turbine, the outlet end of heating agent heat source supply pipe with the hot water inlet of generator for being connected
It is logical.
Further, low temperature heat system further includes the cooling tower for supplementing the cooling circulating water of condenser, cold
But the water outlet of tower is connected by cooling tower outlet pipe with cooling water return pipe, and the water return outlet of cooling tower passes through cooling tower return water
Pipe is connected with cooling water inlet pipe, and cooling tower back-water valve (BWV) is provided on cooling tower return pipe.
Beneficial effects of the present invention: low temperature heat system of the invention, when work, the low-temperature flue gas of heating system
The waste heat of the flue gas of boiler discharge is first cemented out and it is utilized to heat heat medium water by heat exchanger, increases heating agent coolant-temperature gage, with
Afterwards, the heat medium water with higher temperature is transported in the generator of absorption heat pump and drives absorption type heat as power heat source
Pump work；At the same time, from condenser discharge for there is certain temperature cooling water quilt after condenser vapor condensation heat-exchange
It is delivered in the evaporator of absorption heat pump, absorption type heat pump work is so that the warm carried into the cooling water in evaporator
Amount passes to organic working medium in absorption heat pump, organic working medium displace the thermal energy of cooling water and further carry the thermal energy into
Enter in condenser；At this point, steam condenses the condensed water to be formed synchronization into condenser in condenser, organic working medium is just carried
The condensed water that further passes into condenser of heat increase condensate temperature, the condensed water being heated is then again
It is transported in the boiler in workshop, and the inside circulation that organic working medium after cooling then passes through absorption heat pump enters again
Next round heat exchange is carried out with cooling water in evaporator.Boiler replenishing water will be used as using the condensed water after waste-heat heating, by
Just there is certain temperature when entering boiler in water body, in this way, the energy consumption for heating boiler water just can be reduced.
In this way, the waste heat of the low temperature heat system not only low-temperature flue gas of reasonable utilization boiler discharge, also effective simultaneously
The waste heat being utilized in condenser for the cooling water of circulating cooling steam, effectively improve boiler low-temperature fume waste heat and
The utilization rate of cooling circulating water waste heat reduces heat energy loss when industrial production, improves the utilization rate of the energy；Meanwhile it should
By the waste-heat condensed water using cooling water, substitution extracts steam from steam turbine and is heated residual heat system, makes high temperature
Steam as far as possible in steam turbine can do work more, in this way, also can be improved the working efficiency of steam turbine；In addition, the low temperature
The condensed water formed in afterheat utilizing system also reasonable utilization condenser, can effectively increase the vacuum degree of condenser,
To improve the condensation efficiency of condenser condensed steam, condensing is reduced under the premise of not influencing industrial premises normal operation operation
The energy consumption of device.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of low temperature heat system provided in an embodiment of the present invention.
Wherein, each appended drawing reference in figure:
10-low-temperature flue gas heat exchanger 20-absorption heat pump, 21-generators
22-evaporator 23-condenser, 30-condensers
40-Recovery of the hot water pipe 50-heating agent water circulation pipe 51-heat medium water water inlet pipes
52-heat medium water return pipe 53-heating agent water pump 54-heating agent water tanks
55-heating agent shunt valve 60-cooling, 61-cooling water inlet pipes of water circulation pipe
62-cooling water return pipe 63-water circulating pump, 64-cooling water inlet valves
70-condensed water water-supply-pipe 71-condensed water, 72-condensate pumps of shunt valve
73-condenser inlet valve 74-condenser bypass, 80-low-pressure heaters of valve
81-oxygen-eliminating device 90-heating agent heat sources feed 100-flue of pipe
200-steam turbine 201-exhaust pipe, 300-cooling towers
301-cooling tower outlet pipe 302-cooling tower return pipe 303-cooling tower back-water valve (BWV)s.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of Fig. 1 description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in Figure 1, one embodiment of the invention provides a kind of low temperature heat system more particularly to a kind of utilization
Residual heat from boiler fume and cooling circulating water waste heat in absorption heat pump recycling industrial premises are continuously converted into having for production system
With the low temperature heat system of energy, wherein industrial premises can be the thermal power plant for being provided with boiler heating equipment, metallurgy
Factory, petrochemical plant and building materials manufactory etc..Specifically, which includes absorption heat pump 20, low-temperature flue gas
Heat exchanger 10 and condenser 30, absorption heat pump 20 are internally provided with generator 21, evaporator 22 and condenser 23, condenser
23 condensation-water drain is connected by Recovery of the hot water pipe 40 with the water inlet of boiler in industrial premises；Low-temperature flue gas heat exchanger 10
It is connected for the flue 100 with boiler and the waste heat for replacing low-temperature flue gas in flue 100 is to generate high temperature heat medium water, low temperature
The hot water outlet of flue gas heat-exchange unit 10 is connected with the hot water inlet of the generator 21 built in absorption heat pump 20；Condenser 30 is used for
It is connected with the exhaust pipe 201 of steam turbine 200 in industrial premises and steam steam turbine 200 being discharged by cooling circulating water is cold
Condensed water is congealed into, the cooling water outlet of condenser 30 is connected with the cooling water inlet of the evaporator 22 built in absorption heat pump 20,
The condensation-water drain of condenser 30 is connected with the condensation water inlet of condenser 23.
The low temperature heat system of the embodiment of the present invention, low-temperature flue gas heat exchanger 10 are connected with the flue 100 of boiler,
The low-temperature flue gas of boiler discharge is entered in low-temperature flue gas heat exchanger 10 by flue 100, and low-temperature flue gas heat exchanger 10 is made with water body
The waste heat of low-temperature flue gas is replaced for heat transfer (i.e. heat medium water)；201 phase of exhaust pipe of its condenser 30 and steam turbine 200
Even, the high-temperature steam that the work of steam turbine 200 generates is entered in condenser 30 by exhaust pipe 201, and condenser 30 is followed using water
The mode that ring cools makes steam condense to form condensed water.
Specifically, when the low temperature heat system of the present embodiment starts work, low-temperature flue gas heat exchanger 10 is first by pot
The waste heat for the flue gas that fire grate goes out cements out and it is utilized to heat heat medium water, increases heating agent coolant-temperature gage, then, has higher temperatures
The heat medium water of degree is transported in the generator 21 of absorption heat pump 20 and works as power heat source driving absorption heat pump 20.
Heat medium water heating and it is transported simultaneously, from 30 cooling water outlet of condenser be discharged have certain temperature cooling water be transported to
The evaporator 22 of absorption heat pump 20, the heat that absorption heat pump 20 works and carries the cooling water entered in evaporator 22
Amount passes to organic working medium in absorption heat pump 20, and organic working medium, which displaces, to be carried the thermal energy after the heat of cooling water and enter suction
The condenser 23 of receipts formula heat pump 20；At this point, steam condenses the condensed water to be formed and is synchronized to be delivered to condenser 23 in condenser 30
It is interior, in this way, the heat that organic working medium is just carried, which is further passed into the condensed water in condenser 23, makes condensed water temperature
Degree increases, finally, the condensed water being heated is discharged from the condensation-water drain of condenser 23, and is transported in workshop again
In boiler, and organic working medium after cooling then pass through absorption heat pump 20 inside circulation enter again in evaporator 22 with
Cooling water carries out next round heat exchange.The low temperature heat system will feed boiler using the condensed water after waste-heat heating,
Since water body has just had certain temperature when entering boiler, in this way, the energy for heating boiler water just can be reduced
Low-quality waste heat in industrial production, i.e., is continuously converted into the available energy of production system by consumption.
In this way, the low temperature heat system of the present embodiment is not only more than the low temperature of the flue gas of reasonable utilization boiler discharge
The waste heat in condenser 30 for the cooling of circulating cooling steam is also effectively utilized simultaneously, improves boiler low-temperature for heat
The utilization rate of fume afterheat and cooling circulating water waste heat reduces heat energy loss when industrial production, improves the utilization of the energy
Rate；Meanwhile the residual heat system by utilize cooling water waste-heat condensed water, instead of from steam turbine 200 extract steam into
Row heating enables high-temperature steam actings more as far as possible in steam turbine 200, to improve the working efficiency of steam turbine 200；
In addition, the condensed water formed in low temperature heat system also reasonable utilization condenser 30, can effectively increase solidifying
The vacuum degree of vapour device 30 operates normally work not influencing industrial premises to improve the condensation efficiency of 30 condensed steam of condenser
The energy consumption of condenser 30 is reduced under the premise of industry.
It should be noted that in the present embodiment, generally, the temperature of low-temperature flue gas is about 120 DEG C~150 DEG C, warp
Heat medium water can be heated to 80 DEG C~95 DEG C after crossing low temperature flue gas heat-exchange unit 10, so that heat medium water is capable of providing enough temperature
Degree is to drive absorption heat pump 20 to work；Cooling water after circulating cooling steam in condenser 30, temperature are about 30 DEG C
~40 DEG C, i.e. the water inlet inflow temperature of the evaporator 22 of absorption heat pump 20 is about 30 DEG C~40 DEG C, and the cooling water enters
Evaporator 22 and organic working medium exchange heat, and when the heat is used for heating condensate water again by organic working medium, then can be by condensed water
Temperature is heated to 80 DEG C or more, in this way, can be raw directly as boiler by treated the condensed water of absorption heat pump 20
Fisheries water.
It should also be noted that, " entering or flowing out " generator 21, evaporator 22 and condensation described in this implementation
Device 23 etc. can refer to and be directly entered or flow directly out corresponding structure in absorption heat pump 20, may also mean that logical
It crosses and enters indirectly after the processing such as such as absorber of the other structures inside absorption heat pump 10 or flow out indirectly, related in the part
And in the concrete operating principle of absorption heat pump 10, does not do and excessively repeat herein.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes being set to low-temperature flue gas
Heating agent water circulation pipe 50 between heat exchanger 10 and absorption heat pump 20, heat medium water is by heating agent water circulation pipe 50 in low temperature
Is recycled specifically between flue gas heat-exchange unit 10 and the generator 21 of absorption heat pump 20, and heating agent water circulation pipe 50 includes heating agent
Water water inlet pipe 51 and heat medium water return pipe 52, heat medium water water inlet pipe 51 are connected to hot water outlet and the generation of low-temperature flue gas heat exchanger 10
The hot water inlet of device 21, heat medium water return pipe 52 be connected to generator 21 cooling water outlet and low-temperature flue gas heat exchanger 10 cold water into
Mouthful；Heat medium water after the heat exchange heating of low-temperature flue gas heat exchanger 10 is transported to absorption heat pump 20 by heat medium water water inlet pipe 51
In built-in generator 21, heat medium water radiates after entering generator 21, and the heat medium water that temperature reduces after heat dissipation is further through heat medium water
Return pipe 52 comes back in low-temperature flue gas heat exchanger 10；In this way, heat medium water is recycled, so as to reduce the present embodiment
The work of low temperature heat system when the wastewater flow rate that generates, more economical and energy saving and environmental protection.
Specifically, as shown in Figure 1, being additionally provided with heating agent water pump 53 and heat medium water along water (flow) direction on heat medium water water inlet pipe 51
Case 54, heating agent water tank 54 are connected by heating agent shunt valve 55 with heat medium water return pipe 52.Wherein, heating agent water pump 53 is used for heating agent
Water pressurization, to guarantee the service time of heat medium water and the hydraulic pressure of supply；Heating agent water tank 54 is then for temporarily storing excessive heating agent
Water, i.e., when low-temperature flue gas heat exchanger 10 changes thermogenetic heating agent water greater than the amount for driving heat medium water needed for absorption heat pump 20
When, extra heat medium water is just stored in heating agent water tank 54, meanwhile, heating agent water tank 54 also passes through heating agent shunt valve 55 and heating agent
Water return pipe 52 is connected, in this way, heat medium water still is able to normally when 20 trouble hunting of absorption heat pump or when stopping working
It is exchanged heat by low-temperature flue gas heat exchanger 10, to make full use of the waste heat of low-temperature flue gas.Certainly, heating agent water pump 53 is set herein
Purpose be that heat medium water pressurization in the groove, in this way, when heat medium water prevalence pressure is sufficiently large, heating agent water pump 53 can also be with
It omits, therefore, herein to whether heating agent water pump 53 be arranged not doing unique restriction.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes being set to condenser 23
Cooling water circulation pipe 60 between condenser 30 and absorption heat pump 20, condenser 30 are interior for cold after circulating cooling steam
But water passes through cooling water circulation pipe 60 and is recycled between condenser 30 and the evaporator 22 of absorption heat pump 20；Specifically
Ground, cooling water circulation pipe 60 include cooling water inlet pipe 61 and cooling water return pipe 62, and cooling water inlet pipe 61 is connected to condensing
The cooling water outlet of device 30 and the cooling water inlet of evaporator 22, cooling water return pipe 62 are connected to the cooling water outlet of evaporator 22
With the cooling water inlet of condenser 30；Pass through cooling water inlet pipe 61 for the cooling water after circulating cooling steam in condenser 30
Into in evaporator 22, after the heat that cooling water is carried is transmitted to the organic working medium in absorption heat pump 20, the temperature of cooling water
Degree reduces, and then, low-temperature cooling water flows out from the cooling water outlet of evaporator 22 and passes through cooling water return pipe 62 by again
It is delivered in condenser 30 and is condensed for steam cooling；In this way, cooling water can be recycled, to reduce the present embodiment
The wastewater flow rate that low temperature heat system generates when working, system more environmental protection and economy.Generally, into evaporator 22
Cooling water after exchanging heat with organic working medium, temperature is down to 20 DEG C or so, after Gu Dangqi reenters condenser 30, still is able to
Good cooling effect is played to steam.
In another embodiment of the invention, it as shown in Figure 1, being provided with water circulating pump 63 on cooling water inlet pipe 61, uses
It pressurizes in cooling water, improves the conveying speed of cooling water, shorten fashionable colors of the cooling water in pipeline.Certainly, it sets herein
The purpose for setting water circulating pump 63 is to cooling water pressurization in the groove, in this way, recycling when cooling water prevalence pressure is sufficiently large
Water pump 63 also can be omitted, therefore, herein to whether water circulating pump 63 be arranged not doing unique restriction.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes being set to condenser 23
Condensed water water-supply-pipe 70 between absorption heat pump 20, the interior condensed water generated of condenser 30 are transported to by condensate pipe
In condenser 23 built in absorption heat pump 20, condensed water water-supply-pipe 70 is connected to the condensation-water drain and condenser 23 of condenser 30
Condensation water inlet.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes Recovery of the hot water pipe 40,
Recovery of the hot water pipe 40 is connected to the condensation-water drain of condenser 23 and the water inlet of boiler, condensed water water-supply-pipe 70 and Recovery of the hot water pipe
The condensed water shunt valve 71 for being communicated with condensed water water-supply-pipe 70 Yu Recovery of the hot water pipe 40, condensed water water-supply-pipe 70 are provided between 40
The condensation for pressurizeing to condensed water in the groove is provided on pipeline section between condenser 30 and condensed water shunt valve 71
Water pump 72, condensed water water-supply-pipe 70 are provided with condenser inlet on the pipeline section between condenser 23 and condensed water shunt valve 71
Valve 73 is provided with condenser bypass valve 74 on condensed water shunt valve 71.In this way, being connected to condensation by setting condensed water shunt valve 71
Water water-supply-pipe 70 and hot water return pipe 40, when absorption heat pump 20 stops working because of failure, what is be discharged out of condenser 30 is cold
Condensate can be discharged via condensed water shunt valve 71, so as to avoid causing due to 20 failure of absorption heat pump more than entire low temperature
Heat utilization system is stopped transport；Specifically, when absorption heat pump 20 does not work, condenser inlet valve 73 is closed, condenser bypass valve
74 open.
Specifically, in the present embodiment, as shown in Figure 1, being provided at least one low-pressure heater on Recovery of the hot water pipe 40
80, and the steam inlet of at least one low-pressure heater 80 is used to be connected with the exhaust pipe 201 of steam turbine 200, when cold
When condensate is directly input into hot water return pipe 40 without absorption heat pump 20, starts the low-pressure heater 80 and utilize steam turbine
200 discharge extra high-temperature steams condensed water is heated, in this way, even if absorption heat pump 10 stop transport in the case where,
Reasonable utilization can be carried out to the excess steam that steam turbine 200 is discharged by remaining on.
In another embodiment of the invention, as shown in Figure 1, Recovery of the hot water pipe 40 is between low-pressure heater 80 and boiler
Oxygen-eliminating device 81 is additionally provided on pipeline section between water inlet, setting oxygen-eliminating device 81 carries out at deoxygenation the condensed water after heat temperature raising
Reason removes oxygen and other some gases in water body, boiler feedwater pipeline and boiler plant etc. is avoided to be corroded.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes heating agent heat source supply pipe
90, for the input end of heating agent heat source supply pipe 90 for being connected to the exhaust pipe 201 of steam turbine 200, heating agent heat source feeds pipe 90
Outlet end for being connected with the hot water inlet of generator 21.When the waste heat of the low-temperature flue gas of boiler discharge is not enough to heat heat
Matchmaker's water and make heat medium water be increased to driving absorption heat pump 20 work required temperature when, heating agent heat source feed pipe 90 being capable of steamer
Machine 200 be discharged superheated steam be delivered in heat medium water water-supply-pipe, in this way, superheated steam by its heat transfer to heat medium water with into
The temperature of one step raising heat medium water.Specifically, heating agent heat source supply pipe 90 is connected with the exhaust pipe 201 of steam turbine 200
Valve (not shown) is provided at position, for opening or closing heating agent heat source supply this heat source feed channel of pipe 90.
In another embodiment of the invention, as shown in Figure 1, low temperature heat system further includes for supplementing condenser
The water outlet of the cooling tower 300 of 30 cooling circulating water, cooling tower 300 passes through cooling tower outlet pipe 301 and cooling water return pipe
62 are connected, and the water return outlet of cooling tower 300 is connected by cooling tower return pipe 302 with cooling water inlet pipe 61, cooling tower return pipe
Cooling tower back-water valve (BWV) 303 is provided on 302.In this way, when absorption heat pump 20 because maintenance or failure cannot work when, condenser 30
The cooling water of discharge can be transported in cooling tower 300, to ensure that the steam of condenser 30 condenses being normally carried out for work.Tool
Body, cooling water should be arranged on the pipeline section between cooling tower return pipe 302 and absorption heat pump 20 in cooling water inlet pipe 61
Inlet valve 64, when absorption heat pump 20 does not work, which is closed, and cold on cooling tower return pipe 302
But tower back-water valve (BWV) 303 is opened, in this way, just cooling tower can be discharged by cooling water return pipe 62 from the cooling water that condenser 30 flows out
In 300.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of low temperature heat system characterized by comprising
Absorption heat pump, the absorption heat pump are internally provided with generator, evaporator and condenser, the condenser it is cold
Condensate outlet is connected with the water inlet of boiler in industrial premises；
Low-temperature flue gas heat exchanger, for being connected with the flue of the boiler to replace the waste heat of low-temperature flue gas and production in the flue
Raw high temperature heat medium water, the hot water outlet of the low-temperature flue gas heat exchanger are connected with the hot water inlet of the generator；
Condenser arranges the steam turbine for being connected and passing through cooling circulating water with the exhaust pipe of steam turbine in industrial premises
Steam out is condensed into condensed water, and the cooling water outlet of the condenser is connected with the cooling water inlet of the evaporator, described
The condensation-water drain of condenser is connected with the condensation water inlet of the condenser.
2. low temperature heat system according to claim 1, which is characterized in that the low temperature heat system is also wrapped
Include the heating agent water circulation pipe being set between the low-temperature flue gas heat exchanger and the absorption heat pump；The heat medium water circulation
Pipeline includes heat medium water water inlet pipe and heat medium water return pipe, and the heat medium water water inlet pipe is connected to the heat of the low-temperature flue gas heat exchanger
The hot water inlet of water out and the generator, the heat medium water return pipe are connected to the cooling water outlet of the generator and described low
The cooling water inlet of warm flue gas heat-exchange unit.
3. low temperature heat system according to claim 2, which is characterized in that along water flow on the heat medium water water inlet pipe
Direction is additionally provided with heating agent water pump and heating agent water tank, and the heating agent water tank passes through heating agent shunt valve and the heat medium water return pipe phase
Even.
4. low temperature heat system according to claim 1, which is characterized in that the low temperature heat system is also wrapped
Include the cooling water circulation pipe being set between the condenser and the absorption heat pump；The cooling water circulation pipe includes
Cooling water inlet pipe and cooling water return pipe, the cooling water inlet pipe be connected to the condenser cooling water outlet and the steaming
The cooling water inlet of device is sent out, the cooling water return pipe is connected to the cooling of the cooling water outlet and the condenser of the evaporator
Water inlet.
5. low temperature heat system according to claim 1, which is characterized in that the low temperature heat system is also wrapped
The condensed water water-supply-pipe being set between the condenser and the absorption heat pump is included, described in the condensed water water-supply-pipe connection
The condensation water inlet of the condensation-water drain of condenser and the condenser.
6. low temperature heat system according to claim 5, which is characterized in that the low temperature heat system is also wrapped
Recovery of the hot water pipe is included, the Recovery of the hot water pipe is connected to the condensation-water drain of the condenser and the water inlet of the boiler；It is described
It is provided between condensed water water-supply-pipe and the Recovery of the hot water pipe and is communicated with the condensed water water-supply-pipe and the Recovery of the hot water pipe
Condensed water shunt valve, the condensed water water-supply-pipe sets on the pipeline section between the condenser and the condensed water shunt valve
It is equipped with condensate pump, the condensed water water-supply-pipe is arranged on the pipeline section between the condenser and the condensed water shunt valve
There is condenser inlet valve, is provided with condenser bypass valve on the condensed water shunt valve.
7. low temperature heat system according to claim 6, which is characterized in that be provided on the Recovery of the hot water pipe to
A few low-pressure heater, and the steam inlet of at least one low-pressure heater is for the exhaust pipe with the steam turbine
Road is connected.
8. low temperature heat system according to claim 7, which is characterized in that the Recovery of the hot water pipe is between described low
Oxygen-eliminating device is additionally provided on pipeline section between pressure heater and the water inlet of the boiler.
9. described in any item low temperature heat systems according to claim 1~8, which is characterized in that the low temperature exhaust heat benefit
It further include heating agent heat source supply pipe with system, the input end of the heating agent heat source supply pipe is for the exhaust pipe with the steam turbine
Road connection, the outlet end of the heating agent heat source supply pipe with the hot water inlet of the generator for being connected.
10. described in any item low temperature heat systems according to claim 1~8, which is characterized in that the low temperature exhaust heat benefit
With the cooling tower that system further includes for supplementing the cooling circulating water of the condenser, the water outlet of the cooling tower passes through cooling
Tower outlet pipe is connected with the cooling water return pipe, and the water return outlet of the cooling tower passes through cooling tower return pipe and the cooling
Water water inlet pipe is connected, and is provided with cooling tower back-water valve (BWV) on the cooling tower return pipe.
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| CN201910204364.4A CN109945224A (en) | 2019-03-18 | 2019-03-18 | Low temperature heat system |
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| CN201910204364.4A CN109945224A (en) | 2019-03-18 | 2019-03-18 | Low temperature heat system |
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| CN111964148A (en) * | 2020-08-17 | 2020-11-20 | 清华大学 | Absorption heat exchanger capable of realizing multi-zone independent heat supply and debugging method |
| CN112082417A (en) * | 2020-09-24 | 2020-12-15 | 华电水务工程有限公司 | Integrated high temperature heat exchange system and heat exchange method thereof |
| CN116951824A (en) * | 2023-07-28 | 2023-10-27 | 国能龙源电力技术工程有限责任公司 | Thermal power plant waste heat utilization system and thermal power plant |
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Address after: 518000 201, 202, building 7, Shenzhen Software Park, kejizhong 2nd Road, high tech Zone, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Aoyu Low Carbon Technology Co.,Ltd. Address before: 518000 201, 202, building 7, Shenzhen Software Park, kejizhong 2nd Road, high tech Zone, Nanshan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN AOTO-UNION ENERGY SAVING TECHNOLOGY CO.,LTD. |
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Application publication date: 20190628 |