CN205783992U - A kind of energy conserving system utilizing heat pump heat smoke again - Google Patents
A kind of energy conserving system utilizing heat pump heat smoke again Download PDFInfo
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- CN205783992U CN205783992U CN201620465197.0U CN201620465197U CN205783992U CN 205783992 U CN205783992 U CN 205783992U CN 201620465197 U CN201620465197 U CN 201620465197U CN 205783992 U CN205783992 U CN 205783992U
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- water
- heat pump
- flue gas
- recirculated water
- branch road
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model discloses a kind of energy conserving system utilizing heat pump heat smoke again, utilize high-temperature flue gas to drive absorption heat pump to reclaim circulating water afterheat, the wet flue gas after heating wet desulfurizer；Its system specifically includes that steam turbine, condenser, economizer, air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, air-water heat exchanger, absorption heat pump, cooling tower and chimney, absorption heat pump is connected with flue A, fume afterheat degree of depth retracting device, air-water heat exchanger, recirculated water feed pipe and recirculated water return pipe respectively by pipeline, flow between absorption heat pump and air-water heat exchanger for closed cycle water；This utility model is possible not only to reclaim circulating water afterheat, it is also possible to the input gas temperature of wet desulphurization device is reduced to 100 DEG C and less, its exit gas temperature is increased to 80 DEG C and more than, there is good energy-saving benefit and environmental benefit.
Description
Technical field
This utility model belongs to comprehensive utilization of energy technical field, is specifically related to a kind of heat pump heat smoke again of utilizing
Energy conserving system, is particularly suited for the coal-burning power plant having wet desulphurization.
Background technology
Thermal power plant consumes the 50% of coal in China total output, and its heat loss due to exhaust gas with circulating water heating loss is
Maximum in various heat losses in electric power station system two, wherein heat loss due to exhaust gas accounts for the 80% of boiler Total heat loss
The highest, and under pure condensate operating mode, power plant be there are about the heat of 45% and dissipated at cooling tower by recirculated water.
Therefore, this two-part waste heat is recycled, be beneficial to improve further the energy profit of thermal power plant
Use efficiency.
At present, the raising required along with environmental protection policy, each thermal power plant utilizes Wet Flue Gas Desulfurization Technique pair the most substantially
Flue gas carries out desulfurization process, to reduce SO in flue gas2Content.But, thus there are two problems: one is
The flue-gas temperature entering wet desulphurization device is too high, not only reduces desulfuration efficiency, also add the steaming of moisture
Send out loss；Two is that the flue-gas temperature that wet desulphurization device exports is generally about 50 DEG C, and thus flue gas afterbody produces
Give birth to " gypsum rain " phenomenon, pollute environment.Although using GGH equipment, wet desulphurization device can be improved
Exit gas temperature, but its wasted heat is serious, adds heat loss.In the world to flue gas exhaust gas temperature
Suffering from relevant regulations, as Germany's regulation exhaust gas temperature must not be less than 72 DEG C, Britain must not specify less than 80 DEG C,
Japan then must not specify less than 90～110 DEG C.Although China is temporarily without relevant exhaust gas temperature mandatory provision, but
Being as environmental problem increasingly serious, every profession and trade pollution emission standard is the most harsh.Therefore, the most effectively
Reduction wet desulphurization device input gas temperature, improve its exit gas temperature, power plant saved energy and reduce the cost
And environmental conservation, play vital effect.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency present in prior art, according to " temperature boil on the nape opposite the mouth,
Cascade utilization " with principle providing a kind of reasonable in design, dependable performance, be conducive to improving the comprehensive energy of power plant
Effect and the energy conserving system utilizing heat pump heat smoke again of environmental conservation and using method thereof；Including following content:
A kind of energy conserving system utilizing heat pump heat smoke again, the described energy conserving system bag utilizing heat pump heat smoke again
Include economizer, air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, air-water heat exchanger,
Chimney；
Described economizer, air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, gas-
Water-to-water heat exchanger is sequentially connected by pipeline with chimney；
Preferably, the described energy conserving system utilizing heat pump heat smoke more also include steam turbine, absorption heat pump,
Cooling tower, condenser, flue A, flue gas branch road A, flue gas branch road B, closed cycle water lines A,
Closed cycle water lines B, recirculated water feed pipe, recirculated water return pipe, recirculated water branch road A and recirculated water branch road
B；
Described flue A is connected with air preheater and fume afterheat degree of depth retracting device, described absorption type heat
Pump is connected with flue A, fume afterheat degree of depth retracting device respectively by flue gas branch road A, flue gas branch road B；
Described air-water heat exchanger is by closed cycle water lines A, closed cycle water lines B with absorption heat pump even
Connect；
Described condenser is connected with cooling tower by recirculated water feed pipe, recirculated water return pipe, and described recirculated water supplies
Water pipe is connected with absorption heat pump by recirculated water branch road A, and described recirculated water return pipe passes through recirculated water branch road B
It is connected with absorption heat pump.
Preferably, the driving heat source of the described absorption heat pump in the energy conserving system utilizing heat pump heat smoke again is
High-temperature flue gas after air preheater heat exchange.
The using method of a kind of energy conserving system utilizing heat pump heat smoke again, flue gas is after economizer, through air
High-temperature flue gas after preheater heat exchange enters absorption heat pump by flue gas branch road A, carrys out self-circulating water feed pipe
Recirculated water through recirculated water branch road A enter absorption heat pump, high-temperature flue gas drive absorption heat pump reclaim circulation
Water waste heat, heats from the closed cycle water of closed cycle water lines A, the closed cycle water after heating again by
Closed cycle water lines B enters air-water heat exchanger, in order to heat the wet flue gas after wet desulfurizer desulfurization；
High-temperature flue gas after absorption heat pump heat exchange flows back to fume afterheat degree of depth retracting device again through flue gas branch road B,
Recirculated water after absorption heat pump heat exchange converges with the recirculated water coming from cooling tower through recirculated water branch road B；
Closed cycle water only circulates between absorption heat pump and air-water heat exchanger；Air-water heat exchanger can be by wet
Flue gas to 80 DEG C and more than, fume afterheat degree of depth retracting device can be by cooling high-temperature fume to 100 DEG C
And below.
Specifically, this kind utilizes energy conserving system and the using method thereof of heat pump heat smoke again, including steam turbine, coagulates
Vapour device, economizer, air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, air-water change
Hot device, absorption heat pump, cooling tower and chimney, from boiler flue gas through piping pass sequentially through economizer,
Air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, air-water heat exchanger, then by cigarette
Chimney is discharged, and described energy conserving system also includes flue A, flue gas branch road A, flue gas branch road B, closed cycle
Water lines A, closed cycle water lines B, recirculated water feed pipe, recirculated water return pipe, recirculated water branch road A and
Recirculated water branch road B, described flue A are connected with air preheater and fume afterheat degree of depth retracting device, institute
State absorption heat pump to be returned with flue A, the fume afterheat degree of depth respectively by flue gas branch road A, flue gas branch road B
Receiving apparatus connects, and described air-water heat exchanger is by closed cycle water lines A, closed cycle water lines B and suction
Receipts formula heat pump connects, and described condenser is connected with cooling tower by recirculated water feed pipe, recirculated water return pipe,
Described recirculated water feed pipe is connected with absorption heat pump by recirculated water branch road A, and described recirculated water return pipe leads to
Cross recirculated water branch road B to be connected with absorption heat pump.
High-temperature flue gas after air preheater heat exchange enters absorption heat pump by flue gas branch road A, carrys out self-loopa
The recirculated water of water feed pipe enters absorption heat pump through recirculated water branch road A, and high-temperature flue gas drives absorption heat pump
Reclaiming circulating water afterheat, heat the closed cycle water from closed cycle water lines A, the enclosed after heating is followed
Ring water is entered air-water heat exchanger by closed cycle water lines B again, in order to heat after wet desulfurizer desulfurization
Wet flue gas；High-temperature flue gas after absorption heat pump heat exchange flows back to the fume afterheat degree of depth again through flue gas branch road B and returns
Receiving apparatus, the recirculated water after absorption heat pump heat exchange is through recirculated water branch road B and the recirculated water coming from cooling tower
Converge；Closed cycle water only circulates between absorption heat pump and air-water heat exchanger；Air-water heat exchanger is permissible
Wet flue gas is heated to 80 DEG C and more than, fume afterheat degree of depth retracting device can by cooling high-temperature fume extremely
100 DEG C and less.
This utility model compared with prior art, has the following advantages and effect: (1) is reasonable in design, structure letter
Single, dependable performance, cascade utilization principle based on energy, it is low with flue gas that appropriate design reclaims circulating water afterheat
Temperature waste heat, effectively carries out the energy conserving system of wet flue gas reheating simultaneously；(2) wet method can be taken off by this utility model
The input gas temperature of sulfur device is reduced to 100 DEG C and following, by the exit gas temperature liter of wet desulphurization device
Up to 80 DEG C and more than.Therefore, this utility model, while heat recovery, decreases " Gypsum Fibrosum
Rain " phenomenon, protect environment.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that, retouch below
Accompanying drawing in stating is only embodiments more of the present utility model, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is energy conserving system and the using method thereof utilizing heat pump heat smoke again in embodiment of the present utility model
System structure schematic diagram.
Label declaration: 1 economizer, 2 air preheaters, 3 fume afterheat degree of depth retracting devices, 4 wet
Formula desulfurizer, 5 air-water heat exchangers, 6 chimneys, 7 absorption heat pumps, 8 steam turbines, 9 coagulate
Vapour device, 10 cooling towers, 11 flue A, 12 flue gas branch road A, 13 flue gas branch road B, 14
Closed cycle water lines A, 15 closed cycle water lines B, 16 recirculated water feed pipes, 17 recirculated waters return
Water pipe, 18 recirculated water branch road A, 19 recirculated water branch road B.
Detailed description of the invention
Being described in further detail this utility model below in conjunction with embodiment, following example are to this practicality
Novel explanation and this utility model is not limited to following example.
Embodiment:
Seeing Fig. 1, the energy conserving system that this embodiment relates to includes steam turbine 8, condenser 9, economizer 1, sky
Air preheater 2, fume afterheat degree of depth retracting device 3, wet desulfurizer 4, air-water heat exchanger 5, absorption
Formula heat pump 7, cooling tower 10 and chimney 6, the flue gas from boiler passes sequentially through economizer 1, sky through piping
Air preheater 2, fume afterheat degree of depth retracting device 3, wet desulfurizer 4, air-water heat exchanger 5, then
Discharged by chimney 6, this energy conserving system also include flue A 11, flue gas branch road A 12, flue gas branch road B 13,
Closed cycle water lines A 14, closed cycle water lines B 15, recirculated water feed pipe 16, recirculated water backwater
Pipe 17, recirculated water branch road A 18 and recirculated water branch road B 19, described flue A 11 and air preheater
2 and fume afterheat degree of depth retracting device 3 connect, described absorption heat pump 7 is by flue gas branch road A 12, cigarette
Gas branch road B 13 is connected with flue A 11, fume afterheat degree of depth retracting device 3 respectively, described air-water
Heat exchanger 5 is connected with absorption heat pump 7 by closed cycle water lines A 14, closed cycle water lines B 15,
Described condenser 9 is connected with cooling tower 10 by recirculated water feed pipe 16, recirculated water return pipe 17, described
Recirculated water feed pipe 16 is connected with absorption heat pump 7 by recirculated water branch road A 18, described recirculated water backwater
Pipe 17 is connected with absorption heat pump 7 by recirculated water branch road B 19.
High-temperature flue gas after air preheater 2 heat exchange enters absorption heat pump 7 by flue gas branch road A 12, comes
The recirculated water of self-circulating water feed pipe 16 enters absorption heat pump 7 through recirculated water branch road A 18, and high-temperature flue gas drives
Dynamic absorption heat pump 7 reclaims the waste heat of recirculated water, heats the closed cycle from closed cycle water lines A 14
Water, the closed cycle water after heating is entered air-water heat exchanger 5 by closed cycle water lines B 15 again, in order to add
Heat wet flue gas after wet desulfurizer 4 desulfurization；High-temperature flue gas after absorption heat pump 7 heat exchange is through flue gas
Branch road B 13 flows back to fume afterheat degree of depth retracting device 3 again, and the recirculated water after absorption heat pump 7 heat exchange is through following
Ring water branch road B 19 converges with the recirculated water coming from cooling tower 10；Closed cycle water is only at absorption heat pump 7
And circulate between air-water heat exchanger 5；Air-water heat exchanger 5 wet flue gas can be heated to 80 DEG C and more than,
Fume afterheat degree of depth retracting device 3 can be by cooling high-temperature fume to 100 DEG C and following.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components,
Be named titles etc. can be different.All done according to structure, feature and the principle described in this utility model inventional idea
Equivalence or simple change, be all included in the protection domain of this utility model patent.Belonging to this utility model
Described specific embodiment can be made various amendment or supplements or adopt by those skilled in the art
Substitute by similar mode, without departing from structure of the present utility model or surmount the claims and determined
The scope of justice, all should belong to protection domain of the present utility model.
Claims (3)
1. the energy conserving system utilizing heat pump heat smoke again, it is characterised in that: described utilizes heat pump reheating
The energy conserving system of flue gas includes economizer, air preheater, fume afterheat degree of depth retracting device, wet type desulfurizing
Device, air-water heat exchanger, chimney；
Described economizer, air preheater, fume afterheat degree of depth retracting device, wet desulfurizer, gas-
Water-to-water heat exchanger is sequentially connected by pipeline with chimney.
The energy conserving system utilizing heat pump heat smoke more according to claim 1, it is characterised in that: described
Energy conserving system also includes that steam turbine, absorption heat pump, cooling tower, condenser, flue A, flue gas prop up
Road A, flue gas branch road B, closed cycle water lines A, closed cycle water lines B, recirculated water feed pipe, follow
Ring water return pipe, recirculated water branch road A and recirculated water branch road B；
Described flue A is connected with air preheater and fume afterheat degree of depth retracting device, described absorption type heat
Pump is by flue gas branch road A, flue gas branch road B respectively with flue A, fume afterheat degree of depth retracting device even
Connect；
Described air-water heat exchanger is by closed cycle water lines A, closed cycle water lines B and absorption heat pump
Connect；
Described condenser is connected with cooling tower by recirculated water feed pipe, recirculated water return pipe, and described recirculated water supplies
Water pipe is connected with absorption heat pump by recirculated water branch road A, and described recirculated water return pipe passes through recirculated water branch road
B is connected with absorption heat pump.
The energy conserving system utilizing heat pump heat smoke more according to claim 2, it is characterised in that: institute
The driving heat source of the absorption heat pump stated is the high-temperature flue gas after air preheater heat exchange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465197.0U CN205783992U (en) | 2016-05-19 | 2016-05-19 | A kind of energy conserving system utilizing heat pump heat smoke again |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465197.0U CN205783992U (en) | 2016-05-19 | 2016-05-19 | A kind of energy conserving system utilizing heat pump heat smoke again |
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| CN205783992U true CN205783992U (en) | 2016-12-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107224824A (en) * | 2017-07-14 | 2017-10-03 | 河南省德耀节能科技股份有限公司 | A kind of drying materials system |
| CN107238227A (en) * | 2017-06-21 | 2017-10-10 | 燕山大学 | A kind of fume afterheat depth recovery system based on Absorption heat-transformer |
| CN107401856A (en) * | 2016-05-19 | 2017-11-28 | 华电电力科学研究院 | A kind of energy conserving system and its application method using heat pump heat smoke again |
| CN108194939A (en) * | 2018-01-24 | 2018-06-22 | 中国华电科工集团有限公司 | It is a kind of to be used for the exhaust heat stepped device and method using with eliminating white smoke of thermal power plant |
| CN109210969A (en) * | 2018-10-29 | 2019-01-15 | 重庆赛迪热工环保工程技术有限公司 | A kind of residual heat of electric power plant and clean energy resource utilization system |
| CN109974062A (en) * | 2019-03-25 | 2019-07-05 | 大连理工大学 | A kind of fume afterheat depth recovery system using absorption heat pump and two-stage heat exchanger |
-
2016
- 2016-05-19 CN CN201620465197.0U patent/CN205783992U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401856A (en) * | 2016-05-19 | 2017-11-28 | 华电电力科学研究院 | A kind of energy conserving system and its application method using heat pump heat smoke again |
| CN107238227A (en) * | 2017-06-21 | 2017-10-10 | 燕山大学 | A kind of fume afterheat depth recovery system based on Absorption heat-transformer |
| CN107224824A (en) * | 2017-07-14 | 2017-10-03 | 河南省德耀节能科技股份有限公司 | A kind of drying materials system |
| CN108194939A (en) * | 2018-01-24 | 2018-06-22 | 中国华电科工集团有限公司 | It is a kind of to be used for the exhaust heat stepped device and method using with eliminating white smoke of thermal power plant |
| CN108194939B (en) * | 2018-01-24 | 2024-04-23 | 中国华电科工集团有限公司 | Device and method for waste heat cascade utilization and white smoke elimination of thermal power plant |
| CN109210969A (en) * | 2018-10-29 | 2019-01-15 | 重庆赛迪热工环保工程技术有限公司 | A kind of residual heat of electric power plant and clean energy resource utilization system |
| CN109974062A (en) * | 2019-03-25 | 2019-07-05 | 大连理工大学 | A kind of fume afterheat depth recovery system using absorption heat pump and two-stage heat exchanger |
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