CN102997311A - Power plant condensing heat recovery heat supply system - Google Patents
Power plant condensing heat recovery heat supply system Download PDFInfo
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- CN102997311A CN102997311A CN2012105830175A CN201210583017A CN102997311A CN 102997311 A CN102997311 A CN 102997311A CN 2012105830175 A CN2012105830175 A CN 2012105830175A CN 201210583017 A CN201210583017 A CN 201210583017A CN 102997311 A CN102997311 A CN 102997311A
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Abstract
The invention relates to a heat recovery device, and discloses a power plant condensing heat recovery heat supply system which comprises a steam pipeline, a circulating cooling water pipeline and an internal circulating pipeline. The power plant condensing heat recovery is characterized by further comprising a heat supply pipeline, and the heat supply pipeline comprises a heat user terminal, and condensing heat returns to the heat user terminal through water supply pipelines after passing through a water-water heat exchanger. The heat recovery device achieves condensing heat recovery by the heat exchange manner of an absorption heat pump, recovers power plant condensing heat, and waste heat in circulating cooling water, and uses the condensing heat and the waste heat for production and life heat supply, and therefore has the advantages of being high in heat energy recovery utilization rate, energy-saving and environment-protective and the like.
Description
Technical field
The present invention relates to a kind of power plant waste-heat recovery device, relate in particular to the solidifying recuperation of heat heating system of a kind of power plant.
Background technology
The thermal power plant condensation heat enters atmosphere by 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 large energy and water or electricity, has also seriously polluted atmosphere simultaneously.The thermal power plant condensation heat is emptying, is the ubiquitous problem in 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 will be so that the recovery of generating set condensation waste heat will become possibility.
Summary of the invention
The present invention is directed to the used heat that condenses in the prior art and be difficult to reclaim and the problem of utilizing, provide a kind of employing heat pump techniques to reclaim the hot heating system of power plant condensation.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
The recuperation of heat heating system is coagulated by a kind of power plant, comprise steam pipework, cooling water circulation pipeline, inner loop pipeline, also comprise heat supplying pipeline, described heat supplying pipeline comprises hot user terminal, sends back to hot user terminal by supply channel behind the water process water water-to-water heat exchanger in the heat supplying pipeline.Contain a large amount of waste heats in the circulating cooling water of power plant, heat supplying pipeline reclaims waste heat in the circulating cooling water of power plant by absorption heat pump and water water-to-water heat exchanger, and then is transported to hot user side, realizes Waste Heat Recovery and heat supply.
As preferably, the solidifying recuperation of heat heating system of described power plant also comprises the steam-water heat exchanging pipeline, and described steam-water heat exchanging pipeline is provided with vapor-water heat exchanger, after the absorption heat pump heat absorption, forms condensed water and discharges.
As preferably, described heat supplying pipeline (secondary heat supply network) is provided with for hot recycle pump, describedly is arranged between water water-to-water heat exchanger and the hot user terminal for hot recycle pump.By the dynamic action for hot recycle pump, make the water circulation in the heat supplying pipeline, heat is delivered to the terminal use.
As preferably, described steam pipework is through the steam turbine acting, and the exhaust steam that steam turbine is discharged is delivered to condenser, and exhaust steam becomes thermal energy transfer into solidifying water after to the cooling water in the cooling water circulation pipeline through condenser and discharges.
As preferably, described cooling water circulation pipeline is pumped back to coolant circulation pump through coolant circulation pump, condenser, absorption type heat, forms the loop, send cooling tower to environmental emission used heat thereby eliminated recirculated cooling water.By absorption heat pump with the thermal energy transfer in the cooling water circulation pipeline to heat supplying pipeline, improved the utilization rate of heat energy, reach the energy-saving and emission-reduction purpose.
As preferably, described inner loop pipeline (heat supply network) is through absorption heat pump and water water-to-water heat exchanger.Inner loop pipeline carries out heat exchange by the absorption heat pump on the cooling water circulation pipeline, vapor-water heat exchanger and improves a heat supply network temperature, then by the water water-to-water heat exchanger heat energy that obtains is passed to secondary heat supply network heat supplying pipeline in the mode of heat exchange, thereby give terminal hot user heat.
As preferably, described inner loop pipeline is provided with internal circulation pump, and described internal circulation pump is between absorption heat pump and water water-to-water heat exchanger.By the dynamic action of internal circulation pump, make the water circulation in the inner loop pipeline.
As preferably, described steam-water heat exchanging pipeline also is provided with control valve, and described control valve is between steam turbine and vapor-water heat exchanger.Adjusting by control valve can be controlled heating load, for different weather conditions, changes the constant hot user's temperature of control valve aperture.
The present invention realizes solidifying recuperation of heat by the heat exchange method of absorption heat pump, reclaims the waste heat in power plant's condensation heat, the recirculated cooling water, and it is high to have the heat energy recycle rate, the advantages such as energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Wherein: 1-steam pipework, 2-recirculated cooling water pipeline, 3-steam-water heat exchanging pipeline, 4-inner loop pipeline, 5-heat supplying pipeline, 6-vapor-water heat exchanger, 7-absorption heat pump, 9-water water-to-water heat exchanger, 11-steam turbine, 12-condenser, 21-coolant circulation pump, 31-control valve, 41-internal circulation pump, the hot user terminal of 10-, 51-are for hot recycle pump.
The specific embodiment
Below in conjunction with accompanying drawing 1 and the specific embodiment the present invention is described in further detail:
The recuperation of heat heating system is coagulated by a kind of power plant, as shown in Figure 1, comprises steam pipework 1, cooling water circulation pipeline 2, steam-water heat exchanging pipeline 3, inner loop pipeline 4 and heat supplying pipeline 5.
Described steam-water heat exchanging pipeline 3 is provided with vapor-water heat exchanger 6, and connects absorption heat pump 7, after steam process absorption heat pump 7 heat absorptions in the steam-water heat exchanging pipeline 3, forms condensed water and discharges.Described steam-water heat exchanging pipeline 3 carries out the water temperature that the part heat release improves inner loop pipeline (heat supply network) 4 through vapor-water heat exchanger 6, deliver to again absorption heat pump 7 as the driving heat source of absorption heat pump 7, absorption heat pump 7 reclaims the used heat that condenser is discharged recirculated cooling water, and offers inner loop pipeline 4 after heating up.
Described steam-water heat exchanging pipeline 3 also is provided with control valve 31, and described control valve 31 is between steam turbine 11 and vapor-water heat exchanger 6.Adjusting by control valve 31 can be controlled heating load, for different weather conditions, changes the constant hot user's temperature of aperture of control valve 31.Described steam-water heat exchanging pipeline 3 improves a hot net water temperature through vapor-water heat exchanger 6, be connected to absorption heat pump 7 and carry out heat release as the thermal source of absorption heat pump 7, then pass through the effect for hot recycle pump 51, the used heat that absorption heat pump 7 reclaims in the recirculated cooling waters, and offer hot user.
The steam of described steam pipework 1 is sent into steam turbine 11 acting, and the exhaust steam of discharging after steam turbine 11 actings is delivered to condenser 12, and exhaust steam becomes thermal energy transfer after to the cooling water in the cooling water circulation pipeline 2 through condenser 12 and condenses into water and discharge.
Get back to coolant circulation pump 21 behind described recirculated cooling water pipeline 2 process coolant circulation pumps 21, condenser 12, the absorption heat pump 7, form the loop.Carry out heat exchange with the cooling water of heat energy through absorption heat pump 7 and at absorption heat pump 7 interior extraction waste thermal energies and inner loop pipeline 4, inner loop pipeline 4 pass through water water-to-water heat exchanger 9 with thermal energy transfer to heat supplying pipeline 5.
Present embodiment comprises that also inner loop pipeline 4 is a heat supply network, and inner loop pipeline 4 is through absorption heat pump 7, vapor-water heat exchanger 6 and water water-to-water heat exchanger 9.Inner loop pipeline 4 carries out heat exchange by the absorption heat pump 7 on the recirculated cooling water pipeline 2 and vapor-water heat exchanger 6 and obtains heat energy, then by water water-to-water heat exchanger 9 heat energy that obtains is passed to heat supplying pipeline 5 in the mode of heat exchange.Inner loop pipeline 4 is provided with internal circulation pump 41, and internal circulation pump 41 is arranged between absorption heat pump 7 and the water water-to-water heat exchanger 9.Water in the inner loop pipeline 4 obtain heat energy through behind the absorption heat pump 7, and temperature is increased to 90 ℃, and this moment, water temperature further was promoted to more than 105 ℃ through vapor-water heat exchanger 6, then discharge behind the heat energy below the drop in temperature to 53 ℃ through water water-to-water heat exchanger 9.
The solidifying recuperation of heat heating system of described power plant comprises that also heat supplying pipeline 5 is the secondary heat supply network, and described heat supplying pipeline 5 comprises hot user terminal 10, delivers to hot user terminal 10 by supply channel behind the water process water water-to-water heat exchanger 9 in the heat supplying pipeline 5.
Also be provided with on the described heat supplying pipeline 5 for hot recycle pump 51, the described hot recycle pump 51 that supplies is arranged between water water-to-water heat exchanger 9 and the hot user terminal 10.By the dynamic action for hot recycle pump 51, make the water circulation in the heat supplying pipeline 5.Heat energy in the described heat supplying pipeline 5 obtains by water water-to-water heat exchanger 9.Behind the heat supplying pipeline 5 process water water-to-water heat exchangers 9, water temperature in the heat supplying pipeline 5 is elevated to more than 70 ℃, then enter hot user terminal 10 and be used for heating, water temperature is reduced to about 50 ℃ behind overheated user terminal 10, and then owing to supply the effect of hot recycle pump 51, being circulated to water water-to-water heat exchanger 9 heats again, so circulation, thereby realize utilizing the purpose of the waste heat recovery heat supply in the power-plant cooling water, by absorption heat pump 7 recirculated cooling water used heat is realized reclaiming, reclaim power plant's condensation heat and for the production of with the life heat supply, it is high to have the heat energy recycle rate, the advantages such as energy-saving and emission-reduction.
More than the solidifying recuperation of heat heating system of power plant provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention all will change in specific embodiments and applications, can do respective change according to actual needs.In sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the recuperation of heat heating system is coagulated by a power plant, comprise steam pipework (1), recirculated cooling water pipeline (2), inner loop pipeline (4), it is characterized in that: also comprise heat supplying pipeline (5), described heat supplying pipeline (5) comprises hot user terminal (10), through delivering to hot user terminal (10) by supply channel behind the water water-to-water heat exchanger (9).
2. the recuperation of heat heating system is coagulated by power plant according to claim 1, it is characterized in that: the solidifying recuperation of heat heating system of described power plant also comprises steam-water heat exchanging pipeline (3), described steam-water heat exchanging pipeline (3) is provided with vapor-water heat exchanger (6), after absorption heat pump (7) heat absorption, form condensed water and discharge.
3. the recuperation of heat heating system is coagulated by power plant according to claim 1, it is characterized in that: described heat supplying pipeline (5) is provided with for hot recycle pump (51), and the described hot recycle pump (51) that supplies is arranged between water water-to-water heat exchanger (9) and the hot user terminal (10).
4. the recuperation of heat heating system is coagulated by power plant according to claim 1, it is characterized in that: the exhaust steam that described steam pipework (1) produces after through steam turbine (11) acting is delivered to condenser (12), and exhaust steam becomes thermal energy transfer into condensate water after to the cooling water in the cooling water circulation pipeline (2) through condenser (12) and discharges.
5. the recuperation of heat heating system is coagulated by power plant according to claim 1, it is characterized in that: described recirculated cooling water pipeline (2) is got back to later circulating cooling water pump (21) through circulating cooling water pump (21), condenser (12), absorption heat pump (7), forms the loop.
6. the solidifying recuperation of heat heating system of power plant according to claim 1 is characterized in that: described inner loop pipeline (4) process water water-to-water heat exchanger (9), internal circulation pump (41), absorption heat pump (7) and vapor-water heat exchanger (6).
7. according to claim 1 to the solidifying recuperation of heat heating system of the described power plant of 6 any one, it is characterized in that: described inner loop pipeline (4) is provided with internal circulation pump (41), and described internal circulation pump (41) is positioned between absorption heat pump (7) and the water water-to-water heat exchanger (9).
8. according to claim 1 to the solidifying recuperation of heat heating system of the power plant described in 6 any one, it is characterized in that: described steam-water heat exchanging pipeline (3) also is provided with control valve (31), and described control valve (31) is positioned between steam turbine (11) and the vapor-water heat exchanger (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210583017.5A CN102997311B (en) | 2012-12-25 | 2012-12-25 | Power plant condensing heat recovery heat supply system |
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| CN201210583017.5A CN102997311B (en) | 2012-12-25 | 2012-12-25 | Power plant condensing heat recovery heat supply system |
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| CN102997311A true CN102997311A (en) | 2013-03-27 |
| CN102997311B CN102997311B (en) | 2017-01-25 |
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Cited By (3)
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| CN103542445A (en) * | 2012-07-11 | 2014-01-29 | 青岛达能环保设备股份有限公司 | System for utilizing absorption heat pump to recycle waste heat of circulating water of thermal power plant |
| CN107702182A (en) * | 2017-09-01 | 2018-02-16 | 中清源环保节能有限公司 | A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station |
| CN115574646A (en) * | 2022-12-09 | 2023-01-06 | 华北电力大学（保定） | Cascade phase change heat storage system and method based on power plant waste heat and high-temperature heat pump |
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| CN103542445A (en) * | 2012-07-11 | 2014-01-29 | 青岛达能环保设备股份有限公司 | System for utilizing absorption heat pump to recycle waste heat of circulating water of thermal power plant |
| CN107702182A (en) * | 2017-09-01 | 2018-02-16 | 中清源环保节能有限公司 | A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station |
| CN115574646A (en) * | 2022-12-09 | 2023-01-06 | 华北电力大学（保定） | Cascade phase change heat storage system and method based on power plant waste heat and high-temperature heat pump |
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| CN102997311B (en) | 2017-01-25 |
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