CN102435015A - Condensation heat recovery device in power station - Google Patents
Condensation heat recovery device in power station Download PDFInfo
- Publication number
- CN102435015A CN102435015A CN2011102911087A CN201110291108A CN102435015A CN 102435015 A CN102435015 A CN 102435015A CN 2011102911087 A CN2011102911087 A CN 2011102911087A CN 201110291108 A CN201110291108 A CN 201110291108A CN 102435015 A CN102435015 A CN 102435015A
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- water
- pipeline
- heat
- heat pump
- cwr 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a heat recovery device and discloses a condensation heat recovery device in a power station. The condensation heat recovery device comprises a steam pipeline (4), a high-temperature waste-water pipeline (6), a cooling water circulation pipeline (1) and a demineralized water pipeline (5), wherein the steam pipeline (4) is connected with a steam engine (41) and a condenser (13); the high-temperature waste-water pipeline (6) is connected with a lithium bromide refrigerating machine (8) and an absorbing heat pump (7); the cooling water circulation pipeline (1) passes through the condenser (13), absorbing heat pump (7) and the lithium bromide refrigerating machine (8) from a cooling circulation water tank (12), and returns to the cooling circulation water tank (12). In the condensation heat recovery device, condensation heat in the power station is recycled for refrigeration by adopting a heat pump and absorbing and refrigeration technologies, so that cooling efficiency is improved, and the condensation heat recovery device has the advantages of high recycling ratio of water resource, energy saving and environmental protection.
Description
Technical field
The present invention relates to a kind of heat reclamation device, relate in particular to a kind of power plant heat of condensation retracting device.
Background technology
The thermal power plant condensation heat enters atmosphere through cooling tower or air cooling island and forms huge heat-energy losses, is the low main cause of thermal power plant energy use efficiency, not only causes the waste of energy and water or electricity, has also seriously polluted atmosphere simultaneously.Thermal power plant condensation heat emptying is the ubiquitous problem in the China and even the world, is waste, also is helpless.Yet along with the development of heat pump techniques, the particularly appearance of large high-temperature water resource heat pump makes the generating set conserve water energy, and reclaiming condensation heat will become possibility.
Summary of the invention
The present invention is directed to condensation heat in the prior art, steam heat and be difficult to utilize and reclaim, a kind of water that heat pump techniques reclaims power plant's vapor form and power plant heat of condensation retracting device of waste water residual heat of adopting is provided.
In order to solve the problems of the technologies described above, the present invention is able to solve through following technical proposals:
Power plant heat of condensation retracting device comprises steam pipework, hot waste water pipeline, cooling water circulation line, demineralized water pipeline, and described steam pipework connects steam turbine and condenser; The hot waste water pipeline connects lithium bromide refrigerator and sorption type heat pump; The cooling water circulation line begins from the cool cycles pond, through getting back to the cool cycles pond behind condenser, sorption type heat pump, the lithium bromide refrigerator.The steam that steam turbine produces is delivered to condenser; Steam is given the cooling water in the cooling water circulation line through condenser with thermal energy transfer; Have the cooling water process sorption type heat pump of heat energy and in sorption type heat pump, carry out heat exchange with inner loop pipeline, inner loop pipeline is given the demineralized water pipeline through the water water-to-water heat exchanger with thermal energy transfer.The hot waste water pipeline; Boiler continuous blow-down just and the sewage that regularly discharges; This hot waste water pipeline is through the heat exchange at lithium bromide refrigerator and sorption type heat pump; Give cooling water circulation line and CWR road with thermal energy transfer, wherein the CWR road is given the demineralized water pipeline through the water water-to-water heat exchanger with thermal energy transfer again.Cooling water circulation line and hot waste water pipeline all pass through lithium bromide refrigerator, and the heat energy in its pipeline can be used as the heat dynamic resource of lithium bromide refrigerator, and cooling circulating water is freezed, and improve condenser efficient.
As preferably, described cooling water circulation line also passes through centrifugal heat pump, and centrifugal heat pump is arranged between sorption type heat pump and the lithium bromide refrigerator.Through centrifugal heat pump is set, can the heat energy of the cooling water that passes through sorption type heat pump be carried out further thermal energy exchange, give the demineralized water pipeline through inner loop pipeline with the thermal energy transfer in the cooling water circulation line, improved the utilization rate of heat energy.
As preferably, also be provided with the CWR road on the described cooling water circulation line, the CWR road is through the water water-to-water heat exchanger, and the demineralized water pipeline also passes through the water water-to-water heat exchanger; The water inlet on CWR road is arranged between centrifugal heat pump and the lithium bromide refrigerator, and the water return outlet on CWR road is arranged between condenser and the sorption type heat pump.Through the CWR road is set, can select to open CWR road water compensating valve, will carry resorption to receive heat pump again at the cooling water after centrifugal heat pump carries out heat exchange and carry out heat exchange.Simultaneously, the demineralized water pipeline is also passed through on the CWR road, and the heat energy of a part is directly passed to the demineralized water pipeline.
As preferably, described demineralized water pipeline connects sweet-water tank, through with the water water-to-water heat exchanger after get back to sweet-water tank through the demineralized water water return pipeline.Heat energy in the demineralized water pipeline obtains through the water water-to-water heat exchanger.
As preferably, also comprise inner loop pipeline, inner loop pipeline is through centrifugal heat pump, sorption type heat pump, lithium bromide refrigerator and water water-to-water heat exchanger.Inner loop pipeline carries out heat exchange through lithium bromide refrigerator in the sorption type heat pump on the cooling water circulation line, the hot waste water pipeline and the centrifugal heat pump on the CWR road and obtains heat energy, through the water water-to-water heat exchanger heat energy that obtains is passed to the demineralized water pipeline with the mode of heat exchange then.
As preferably, described CWR road is provided with CWR road circulating pump and CWR road water compensating valve, and CWR road water compensating valve is arranged on the CWR road that gets into before the lithium bromide refrigerator.Can carry out the secondary recovery utilization to cooling water through opening CWR road water compensating valve, improve the utilization ratio of heat energy through sorption type heat pump.
As preferably, described demineralized water water return pipeline is provided with demineralized water water return pipeline control valve, is provided with the deoxygenation pipeline between water water-to-water heat exchanger and the demineralized water water return pipeline control valve, and the deoxygenation pipeline is connected with oxygen-eliminating device.When demineralized water water return pipeline control valve was opened, the water in the demineralized water pipeline was back to sweet-water tank after through the water water-to-water heat exchanger; When demineralized water water return pipeline control valve was closed, the water in the demineralized water pipeline was through getting into oxygen-eliminating device through the deoxygenation pipeline behind the water water-to-water heat exchanger.
As preferably, described steam pipework is through steam turbine, and the steam that steam turbine is produced is delivered to the vapour condenser, and steam is given thermal energy transfer through the vapour condenser and coagulated water behind the cooling water in the cooling water circulation line and discharge.
As preferably, described inner loop pipeline is provided with the inner loop pipeline water compensating valve.Along with the water in the inner loop pipeline has certain evaporating loss at the continuous release heat energy that absorbs, therefore, logical inner loop pipeline water compensating valve can carry out certain replenishing to the water in the inner loop pipeline, thus the normal operation of assurance inner loop pipeline.
The present invention is used for refrigeration through adopting heat pump and absorption refrigeration technology that the heat of condensation of power plant is reclaimed, and improves cooling effectiveness, has water resource recovery utilization rate height, the advantage of energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
1-cooling water circulation line wherein; 2-CWR road; The 3-inner loop pipeline; The 4-steam pipework; 5-demineralized water pipeline; 6-hot waste water pipeline; The 7-sorption type heat pump; The 8-lithium bromide refrigerator; 9-water water-to-water heat exchanger; The centrifugal heat pump of 10-; The 11-coolant circulation pump; 12-cool cycles pond; The 13-condenser; 21-CWR road circulating pump; 22-CWR road water compensating valve; 31-inner loop pipeline circulating pump; 32-inner loop pipeline water compensating valve; The 41-steam turbine; 51-demineralized water pipeline circulating pump; 52-demineralized water water return pipeline control valve; The 53-oxygen-eliminating device; The 54-sweet-water tank; The 61-wastewater disposal basin.
The specific embodiment
Below in conjunction with the accompanying drawing 1 and the specific embodiment the present invention is described in further detail:
Embodiment 1
Power plant heat of condensation retracting device, as shown in Figure 1, comprise steam pipework 4, hot waste water pipeline 6, cooling water circulation line 1, demineralized water pipeline 5, described steam pipework 4 connects steam turbine 41 and condenser 13; Hot waste water pipeline 6 connects lithium bromide refrigerator 8 and sorption type heat pump 7; Cooling water circulation line 1 is 12 beginnings from the cool cycles pond, through getting back to cool cycles pond 12 behind condenser 13, sorption type heat pump 7, the lithium bromide refrigerator 8.The steam that steam turbine 41 produces is delivered to condenser 13; Steam is given the cooling water in the cooling water circulation line 1 through condenser 13 with thermal energy transfer; The cooling water that has heat energy carries out heat exchange through sorption type heat pump 7 and in sorption type heat pump 7 with inner loop pipeline 3, and inner loop pipeline 3 is given demineralized water pipeline 5 through water water-to-water heat exchanger 9 with thermal energy transfer.Hot waste water pipeline 6 is through the heat exchange at lithium bromide refrigerator 8 and sorption type heat pump 7; Give cooling water circulation line 1 and CWR road 2 with thermal energy transfer, wherein CWR road 2 is given demineralized water pipeline 5 through water water-to-water heat exchanger 9 with thermal energy transfer again.Cooling water circulation line 1 and hot waste water pipeline 6 all pass through lithium bromide refrigerator 8, and the heat energy in its pipeline can be used as the heat dynamic resource of lithium bromide refrigerator 8, freezes.Hot waste water pipeline 6 passes through lithium bromide refrigerator 8, sorption type heat pump 7 successively and discharges heat energy.Wherein, cooling water circulation line 1 is that j1, CWR road 2 are j6 for j4, demineralized water pipeline 5 for j5, hot waste water pipeline 6 for j3, steam pipework 4 for j2, inner loop pipeline 3.
Cooling water circulation line 1 also passes through centrifugal heat pump 10, and centrifugal heat pump 10 is arranged between sorption type heat pump 7 and the lithium bromide refrigerator 8.Through centrifugal heat pump 10 is set, can the heat energy of the cooling water that passes through sorption type heat pump 7 be carried out further thermal energy exchange, give demineralized water pipeline 5 through inner loop pipeline 3 with the thermal energy transfer in the cooling water circulation line 1, improved the utilization rate of heat energy.Cooling water circulation line 1 is provided with coolant circulation pump 11, and coolant circulation pump 11 is arranged between cool cycles pond 12 and the condenser 13.Cooling water circulation line 1 passes through sorption type heat pump 7, centrifugal heat pump 10, lithium bromide refrigerator 8 successively and discharges heat energy.
Also be provided with CWR road 2 on the cooling water circulation line 1, CWR road 2 is through water water-to-water heat exchanger 9, and demineralized water pipeline 5 also passes through water water-to-water heat exchanger 9; The water inlet on CWR road 2 is arranged between centrifugal heat pump 10 and the lithium bromide refrigerator 8, and the water return outlet on CWR road 2 is arranged between condenser 13 and the sorption type heat pump 7.Through CWR road 2 is set, can select to open CWR road water compensating valve 22, will carry resorption to receive heat pump 7 again at the cooling water after centrifugal heat pump 10 carries out heat exchange and carry out heat exchange.Simultaneously, demineralized water pipeline 5 is also passed through on CWR road 2, and the heat energy of a part is directly passed to demineralized water pipeline 5.Also be provided with CWR road circulating pump 21 on the CWR road 2.CWR road 2 is passed through to absorb heat energy at lithium bromide refrigerator 8 places, gives demineralized water pipeline 5 through water water-to-water heat exchanger 9 with thermal energy transfer then, converges the back with entering sorption type heat pump 7 cooling water circulation line 1 before then and gets into sorption type heat pump 7.
Demineralized water pipeline 5 connects sweet-water tank 54, through getting back to brine tank 54 with water water-to-water heat exchanger 9 backs through the demineralized water water return pipeline.Heat energy in the demineralized water pipeline 5 obtains through water water-to-water heat exchanger 9.Demineralized water pipeline 5 is provided with demineralized water pipeline circulating pump 51, and demineralized water pipeline circulating pump 51 is arranged between water water-to-water heat exchanger 9 and the brine tank 54.Demineralized water pipeline 5 is through absorbing heat energy with water water-to-water heat exchanger 9 backs.After water temperature in the demineralized water pipeline 5 is increased to more than 90 ℃, open demineralized water water return pipeline control valve 52, give oxygen-eliminating device 53 with delivery.
Also comprise inner loop pipeline 3, inner loop pipeline 3 is through centrifugal heat pump 10, sorption type heat pump 7, lithium bromide refrigerator 8 and water water-to-water heat exchanger 9.Inner loop pipeline 3 carries out heat exchange through lithium bromide refrigerator 8 in the sorption type heat pump on the cooling water circulation line 17, the hot waste water pipeline 6 and the centrifugal heat pump on the CWR road 2 10 and obtains heat energy, through water water-to-water heat exchanger 9 heat energy that obtains is passed to demineralized water pipeline 5 with the mode of heat exchange then.Inner loop pipeline 3 is provided with inner loop pipeline circulating pump 31, and inner loop pipeline circulating pump 31 is arranged between centrifugal heat pump 10 and the water water-to-water heat exchanger 9.Water in the inner loop pipeline 3 obtains heat energy through centrifugal heat pump 10 backs; Temperature is increased to more than 70 ℃; This moment is at the sorption type heat pump 7 of flowing through, because higher through the cooling water temperature of sorption type heat pump 7, so after the water in the inner loop pipeline 3 are continued heating; Inner loop pipeline 3 is through lithium bromide refrigerator 8 release portion heat energy, and temperature drops to below 53 ℃ after continuing to discharge heat energy through water water-to-water heat exchanger 9 then.
CWR road 2 is provided with CWR road circulating pump 21 and CWR road water compensating valve 22, and CWR road water compensating valve 22 is arranged on and gets on the lithium bromide refrigerator 8 CWR road 2 before.Can carry out the secondary recovery utilization to cooling water through opening CWR road water compensating valve 22, improve the utilization ratio of heat energy through sorption type heat pump 7.After CWR road water compensating valve 22 is opened, continue on cooling water circulation line 1 through the hot water of centrifugal heat pump 10 is a part of, another part gets into CWR road 2; At this moment; Replenish the lower normal-temperature water of entering temperature through CWR road water compensating valve 22; Make that getting into lithium bromide refrigerator 8 preceding water temperatures through CWR road 2 reduces greatly; And through lithium bromide refrigerator 8 time, absorbed heat energy, then this part heat energy has been passed to demineralized water pipeline 5 through water water-to-water heat exchanger 9.
The demineralized water water return pipeline is provided with demineralized water water return pipeline control valve 52, is provided with the deoxygenation pipeline between water water-to-water heat exchanger 9 and the demineralized water water return pipeline control valve 52, and the deoxygenation pipeline is connected with oxygen-eliminating device 53.When demineralized water water return pipeline control valve 52 was opened, the water in the demineralized water pipeline 5 was back to sweet-water tank 54 after through water water-to-water heat exchanger 9; When demineralized water water return pipeline control valve 52 was closed, the water in the demineralized water pipeline 5 got into oxygen-eliminating device 53 through water water-to-water heat exchanger 9 backs through the deoxygenation pipeline.
Steam pipework 4 process steam turbines 41, the steam that steam turbine 41 is produced is delivered to condenser 13, and steam coagulates the water discharge after giving the cooling water in the cooling water circulation line 1 through condenser 13 with thermal energy transfer.Steam work done in steam turbine that boiler produces; In the cyclic process of this heating agent; Need emit a large amount of condensation heat, the steam after the steam turbine work done gets into condenser 13 through steam discharge, in the process of condenser 13 condensations, discharges heat energy and condense into water after backheat, to get into boiler again; At this moment, raise through the cooling water temperature in the condenser 13 cooling water circulation lines 1.
Inner loop pipeline 3 is provided with inner loop pipeline water compensating valve 32.Along with the water in the inner loop pipeline 3 discharge heat energy and have certain evaporating loss constantly absorbing, therefore, logical inner loop pipeline water compensating valve 32 can carry out certain replenishing to the water in the inner loop pipeline 3, thereby guarantees the normal operation of inner loop pipeline 3.
In a word, the above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (9)
1. a power plant heat of condensation retracting device comprises steam pipework (4), hot waste water pipeline (6), cooling water circulation line (1), demineralized water pipeline (5), it is characterized in that: described steam pipework (4) connects steam turbine (41) and condenser (13); Hot waste water pipeline (6) connects lithium bromide refrigerator (8) and sorption type heat pump (7); Cooling water circulation line (1) is from cool cycles pond (12) beginning, through getting back to cool cycles pond (12) after condenser (13), sorption type heat pump (7), lithium bromide refrigerator (8) refrigeration.
2. power plant according to claim 1 heat of condensation retracting device is characterized in that: described cooling water circulation line (1) also passes through centrifugal heat pump (10), and centrifugal heat pump (10) is arranged between sorption type heat pump (7) and the lithium bromide refrigerator (8).
3. power plant according to claim 2 heat of condensation retracting device; It is characterized in that: also be provided with CWR road (2) on the described cooling water circulation line (1); CWR road (2) is through water water-to-water heat exchanger (9), and demineralized water pipeline (5) also passes through water water-to-water heat exchanger (9); The water inlet on CWR road (2) is arranged between centrifugal heat pump (10) and the lithium bromide refrigerator (8), and the water return outlet of CWR road (2) is arranged between condenser (13) and the sorption type heat pump (7).
4. power plant according to claim 1 heat of condensation retracting device is characterized in that: described demineralized water pipeline (5) connects sweet-water tank (54), through getting back to sweet-water tank (54) with water water-to-water heat exchanger (9) back through the demineralized water water return pipeline.
5. power plant according to claim 3 heat of condensation retracting device is characterized in that: also comprise inner loop pipeline (3), inner loop pipeline (3) is through centrifugal heat pump (10), sorption type heat pump (7), lithium bromide refrigerator (8) and water water-to-water heat exchanger (9).
6. power plant according to claim 3 heat of condensation retracting device; It is characterized in that: described CWR road (2) is provided with CWR road circulating pump (21) and CWR road water compensating valve (22), and CWR road water compensating valve (22) is arranged on and gets on lithium bromide refrigerator (8) the CWR road (2) before.
7. power plant according to claim 4 heat of condensation retracting device; It is characterized in that: described demineralized water water return pipeline is provided with demineralized water water return pipeline control valve (52); Be provided with the deoxygenation pipeline between water water-to-water heat exchanger (9) and the demineralized water water return pipeline control valve (52), the deoxygenation pipeline is connected with oxygen-eliminating device (53).
8. power plant according to claim 1 heat of condensation retracting device; It is characterized in that: described steam pipework (4) is through steam turbine (41); The steam that steam turbine (41) is produced is delivered to condenser (13), and steam coagulates the water discharge after giving the cooling water in the cooling water circulation line (1) through condenser (13) with thermal energy transfer.
9. power plant according to claim 5 heat of condensation retracting device is characterized in that: described inner loop pipeline (3) is provided with inner loop pipeline water compensating valve (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102911087A CN102435015B (en) | 2011-09-29 | 2011-09-29 | Condensation heat recovery device in power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102911087A CN102435015B (en) | 2011-09-29 | 2011-09-29 | Condensation heat recovery device in power station |
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| Publication Number | Publication Date |
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| CN102435015A true CN102435015A (en) | 2012-05-02 |
| CN102435015B CN102435015B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102911087A Expired - Fee Related CN102435015B (en) | 2011-09-29 | 2011-09-29 | Condensation heat recovery device in power station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809144A (en) * | 2012-08-06 | 2012-12-05 | 湖南创化低碳环保科技有限公司 | Device and method for using two-stage jet absorption heat pump to improve thermal cycle efficiency |
| CN102997311A (en) * | 2012-12-25 | 2013-03-27 | 浙江工商大学 | Power plant condensing heat recovery heat supply system |
| CN102997224A (en) * | 2012-12-25 | 2013-03-27 | 浙江工商大学 | Power plant condensing heat recycle system |
| CN104807237A (en) * | 2015-04-29 | 2015-07-29 | 北京中南亚太环境科技发展有限公司 | Energy-saving device applying lithium bromide |
| CN109026227A (en) * | 2018-08-27 | 2018-12-18 | 山东大学 | A kind of cooling heating and power generation system and method containing condensing units |
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| CN102997224A (en) * | 2012-12-25 | 2013-03-27 | 浙江工商大学 | Power plant condensing heat recycle system |
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| CN104807237A (en) * | 2015-04-29 | 2015-07-29 | 北京中南亚太环境科技发展有限公司 | Energy-saving device applying lithium bromide |
| CN104807237B (en) * | 2015-04-29 | 2017-05-24 | 北京中南亚太环境科技发展有限公司 | Energy-saving device applying lithium bromide |
| CN109026227A (en) * | 2018-08-27 | 2018-12-18 | 山东大学 | A kind of cooling heating and power generation system and method containing condensing units |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102435015B (en) | 2013-11-27 |
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