CN103017238A - Waste heat recovery heating system of biomass power plant - Google Patents
Waste heat recovery heating system of biomass power plant Download PDFInfo
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- CN103017238A CN103017238A CN2012105830207A CN201210583020A CN103017238A CN 103017238 A CN103017238 A CN 103017238A CN 2012105830207 A CN2012105830207 A CN 2012105830207A CN 201210583020 A CN201210583020 A CN 201210583020A CN 103017238 A CN103017238 A CN 103017238A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The invention relates to a heat recovery device, and discloses a waste heat recovery heating system of a biomass power plant. The waste heat recovery heating system comprises a steam line, a cooling water circulation line, an inner circulation line and a heating line, wherein the heating line is connected with a slag heat exchanger, and is connected to a heat user side after heat is absorbed by a water heat exchanger. The waste heat recovery heating system recovers waste heat in flue gas, slag and circulating cooling water of the biomass power plant in a heat exchange mode to be used for life and production heat supply, and the waste heat recovery heating system has the advantages of high recovery use ratio of heat energy, energy conservation, environmental protection and the like.
Description
Technical field
The present invention relates to a kind of waste heat recovery plant, relate in particular to a kind of biomass electric power plant recirculated cooling water, flue gas, slag Waste Heat Recovery heating system.
Background technology
The recirculated cooling water heat energy of biomass power plant enters by chimney by cooling tower, flue gas heat that atmosphere forms huge heat-energy losses, slag heat energy enters environment by lime-ash, it is the low main cause of biomass power plant energy use efficiency, not only cause the waste of energy and water or electricity, also seriously polluted environment and atmosphere simultaneously.Important difference of biomass power plant and coal-fired station just is that sulfur content is extremely low in the burnt gas of biomass power plant, also can not form sulfuric acid, etching apparatus after the condensation.So biomass electric power plant does not have certain temperature requirement to the cigarette wind that it discharges, the heat in the cigarette wind can be recycled fully.
Summary of the invention
The present invention is directed to the used heat such as recirculated cooling water in the prior art, flue gas, slag and be difficult to reclaim and the problem of utilizing, a kind of heating system that adopts heat pump techniques, flue gas heat-exchange unit, slag heat exchanger to reclaim biomass electric power plant used heat is provided.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
A kind of biomass electric power plant Waste Heat Recovery heating system comprises steam pipework, recirculated cooling water pipeline, inner loop pipeline, also comprises heat supplying pipeline, and described heat supplying pipeline connects the slag heat exchanger, behind water water-to-water heat exchanger absorbing heat, is connected to hot user side.Contain a large amount of waste heats in the boiler slag, heat supplying pipeline is by the waste heat in the slag heat exchanger recovery slag, and the waste heat in process water water-to-water heat exchanger recovery boiler cigarette wind and the cooling water, and then is transported to hot user side, realizes Waste Heat Recovery and heat supply.
As preferably, the present invention also comprises the flue gas heat exchange pipeline, described flue gas heat exchange pipeline is provided with flue gas heat-exchange unit, the high-temperature-hot-water that the process flue gas heat-exchange unit obtains is as the driving heat source of absorption heat pump, absorption heat pump absorption cycle cooling water waste is further delivered to hot user by the water water-to-water heat exchanger after the intensification by flue gas heat-exchange unit.Described flue gas heat exchange pipeline absorbs heat through flue gas heat-exchange unit, be connected to sorption type heat pump and carry out heat release, then pass through the effect of flue gas heat exchange circulating pump, the flue gas heat exchange pipeline loops back the used heat of receiving in the flue gas, and offers the hot water temperature that sorption type heat pump is done driving heat source and further promoted the output of suction inner loop pipeline.
As preferably, described inner loop pipeline is through sorption type heat pump, flue gas heat-exchange unit and water water-to-water heat exchanger, and the water water-to-water heat exchanger connects internal circulation pump, forms circulation line.Inner loop pipeline carries out heat exchange by the flue gas heat-exchange unit on the sorption type heat pump on the recirculated cooling water pipeline and the flue gas heat exchange pipeline and obtains heat energy, then by the water water-to-water heat exchanger heat energy that obtains is passed to heat supplying pipeline in the mode of heat exchange.
As preferably, described steam pipework connects steam turbine and condenser.
As preferably, the steam of 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 condensate water after to the cooling water in the recirculated cooling water pipeline through condenser and discharges.
As preferably, described recirculated cooling water pipeline is got back to later on the cool cycles pond through coolant circulation pump, condenser, absorption heat pump from the cool cycles pond.Also be provided with the circulating cooling water pump in the described cooling water circulation pipeline.Thermal energy transfer in the recirculated cooling water pipeline that absorption heat pump is absorbed by inner loop pipeline has improved the utilization rate of heat energy to heat supplying pipeline.
As preferably, also be provided with internal circulation pump on the described inner loop pipeline, described internal circulation pump is arranged between absorption heat pump and the water water-to-water heat exchanger.
As preferably, also be provided with on the described heat supplying pipeline for hot recycle pump, the described hot recycle pump that supplies is arranged between slag heat exchanger and the water water-to-water heat exchanger.
Absorption heat pump technology recovery biomass electric power plant recirculated cooling water used heat, flue gas heat-exchange unit reclaim cigarette wind used heat, the slag heat exchanger reclaims the used heat in the slag by adopting in the present invention, and offer life, work with hot, it is high to have the heat energy recycle rate, the advantage of energy-conserving and environment-protective.
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-flue gas heat exchange pipeline, 4-inner loop pipeline, 5-heat supplying pipeline, 6-flue gas heat-exchange unit, 7-absorption heat pump, 9-water water-to-water heat exchanger, 10-slag heat exchanger, 11-steam turbine, 12-condenser, 21-circulating cooling pond, 22-circulating cooling water pump, 31-flue gas heat exchange circulating pump, 41-internal circulation pump, 52-are for hot recycle pump, the hot user of 51-terminal.
The specific embodiment
Below in conjunction with accompanying drawing 1 and the specific embodiment the present invention is described in further detail:
A kind of biomass electric power plant Waste Heat Recovery heating system as shown in Figure 1, comprises steam pipework 1, recirculated cooling water pipeline 2, flue gas heat exchange pipeline 3, inner loop pipeline 4 and heat supplying pipeline 5.
Described steam pipework 1 connects steam turbine 11 and condenser 12; Recirculated cooling water pipeline 2 is from cool cycles pond 21, through getting back to cool cycles pond 21 behind circulating cooling water pump, condenser 12, the sorption type heat pump 7.After the steam of steam pipework 1 does work through steam turbine 11, the exhaust steam that steam turbine 11 is discharged is delivered to condenser 12, exhaust steam through condenser 12 with thermal energy transfer to cooling water circulation pipeline 2, with the recirculated cooling water of heat energy absorb through sorption type heat pump 7 and heat up after carry out heat exchange with inner loop pipeline 4, inner loop pipeline 4 is by further heating up through flue gas heat-exchange unit 6 by water water-to-water heat exchanger 9 thermal energy transfer to heat supplying pipeline 5.
Recirculated cooling water pipeline 2 carries out further thermal energy exchange through heat energy and the intensification of sorption type heat pump 7 absorption cycle cooling waters, by inner loop pipeline 4 heat energy of sorption type heat pump 7 absorption cycle cooling waters is heated up and further to heat up by water water-to-water heat exchanger 9 thermal energy transfer to heat supplying pipeline 5 by flue gas heat-exchange unit 6, improved the utilization rate of heat energy.Recirculated cooling water pipeline 2 is provided with circulating cooling water pump 22, and circulating cooling water pump 22 is arranged between cool cycles pond 21 and the condenser 12.Recirculated cooling water pipeline 2 discharges heat energy through sorption type heat pump 7.
The steam of steam pipework 1 through steam turbine 11 actings after, the exhaust steam that steam turbine 11 is discharged is delivered to condenser 12, 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.The steam that boiler produces work done in vapour opinion machine, in the cyclic process of this heating agent, need to emit a large amount of condensation heat, exhaust steam after the steam turbine work done enters condenser 12 by steam discharge, in the process of condenser 12 condensations, discharge heat energy and condense into water and after heating, enter boiler again, at this moment, raise through the cooling water temperature in the condenser 12 cooling water circulation pipelines 2.
Described flue gas heat exchange pipeline 3 is provided with flue gas heat-exchange unit 6, and the heat medium water of flue gas heat exchange pipeline 3 as the driving heat source of absorption heat pump 7, after the sorption type heat pump heat absorption, is got back to flue gas heat-exchange unit 6 after flue gas heat-exchange unit 6 heats up.Also be provided with circulating pump 31 in the described flue gas heat exchange pipeline.Described flue gas heat exchange pipeline absorbs heat through flue gas heat-exchange unit 6, water temperature in the flue gas heat exchange pipeline 3 is reached more than 145 ℃, and then be connected to sorption type heat pump 7 and do the driving heat source release heat, the then effect by circulating pump 31, the used heat in the flue gas heat exchange pipeline 3 circulation recovered flue gas.Hot water in the flue gas heat exchange pipeline 3 is as the driving heat source of absorption heat pump 7, sorption type heat pump 7 absorption cycle cooling water wastes also heat up and to send into inner loop pipeline 4, inner loop pipeline 4 after flue gas heat-exchange unit 6 heats up again, pass through water water-to-water heat exchanger 9 with thermal energy transfer to heat supplying pipeline 5.
Described inner loop pipeline 4 is through internal circulation pump 41, absorption heat pump 7, flue gas heat-exchange unit 6 and water water-to-water heat exchanger 9.Inner loop pipeline 4 carries out heat exchange by the sorption type heat pump 7 on the recirculated cooling water pipeline 2, flue gas heat-exchange unit 6 in the flue gas heat exchange pipeline 3 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 heats up through absorption heat pump 7 and reaches about 90 ℃; Then pass through flue gas heat-exchange unit 6, because the temperature in the flue gas is higher, the water in the inner loop pipeline 4 can be heated to more than 105 ℃; At last, return water temperature dropped to below 50 ℃ after the water in the inner loop pipeline 4 entered the 9 release heat energy heat supplies of water water-to-water heat exchanger.
Described heat supplying pipeline 5 connects hot user side 51 and slag heat exchanger 10, through getting back to the hot user 51 of terminal behind the water water-to-water heat exchanger 9.Described slag heat exchanger 10 is by the waste heat in the mode recovery boiler waste residue of heat exchange.Heat supplying pipeline 5 is provided with for hot recycle pump 52, is arranged between water water-to-water heat exchanger 9 and the slag heat exchanger 10 for hot recycle pump 52.Heat energy in the heat supplying pipeline 5 obtains by water water-to-water heat exchanger 9 and slag heat exchanger 10.Water temperature is elevated to more than 50 ℃ behind the heat supplying pipeline 5 process slag heat exchangers 10, and then through again absorbing heat energy behind the water water-to-water heat exchanger 9, water temperature reaches delivers to the hot user 51 of terminal more than 70 ℃.
The present invention reclaims the waste heat in biomass electric power plant cigarette wind, slag and the cooling water by heat exchange method, and in order to the production heat supply of living, it is high to have the heat energy recycle rate, the advantages such as energy-conserving and environment-protective.
More than biomass electric power plant Waste Heat Recovery heating system 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. biomass electric power plant Waste Heat Recovery heating system, comprise steam pipework (1), recirculated cooling water pipeline (2), inner loop pipeline (4), it is characterized in that: also comprise heat supplying pipeline (5), behind described heat supplying pipeline (5) process slag heat exchanger (10), water water-to-water heat exchanger (9) absorbing heat, deliver to the hot user of terminal (51).
2. biomass electric power plant Waste Heat Recovery heating system according to claim 1, it is characterized in that: also comprise flue gas heat exchange pipeline (3), described flue gas heat exchange pipeline (3) is provided with flue gas heat-exchange unit (6), flue gas heat exchange pipeline (3) is got back to flue gas heat-exchange unit (6) by flue gas heat exchange circulating pump (31) after carrying out heat absorption through sorption type heat pump (7).
3. biomass electric power plant Waste Heat Recovery heating system according to claim 1 is characterized in that: described inner loop pipeline (4) sorption type heat pump (7), flue gas heat-exchange unit (6), water water-to-water heat exchanger (9) and internal circulation pump (41) formation circulation line.
4. biomass electric power plant Waste Heat Recovery heating system according to claim 1 is characterized in that: described steam pipework (1) connection steam turbine (11) and condenser (12).
5. biomass electric power plant Waste Heat Recovery heating system according to claim 4, it is characterized in that: after the steam of described steam pipework (1) does work through steam turbine (11), the exhaust steam that steam turbine (11) is discharged is delivered to condenser (12), exhaust steam through condenser (12) with thermal energy transfer to the recirculated cooling water in the recirculated cooling water pipeline (2) after solidifying water discharge.
6. biomass electric power plant Waste Heat Recovery heating system according to claim 1, it is characterized in that: described recirculated cooling water pipeline (2) is from cool cycles pond (21), through getting back to cool cycles pond (21) behind circulating cooling water pump (22), condenser (12), the sorption type heat pump (7).
7. according to claim 1 to the biomass electric power plant Waste Heat Recovery heating system described in 6 any one, it is characterized in that: also be provided with internal circulation pump (41) on the described inner loop pipeline (4).
8. according to claim 1 to the biomass electric power plant Waste Heat Recovery heating system described in 6 any one, it is characterized in that: also be provided with on the described heat supplying pipeline (5) for hot recycle pump (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210583020.7A CN103017238B (en) | 2012-12-25 | 2012-12-25 | Biomass electric power plant Waste Heat Recovery heating system |
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| CN201210583020.7A CN103017238B (en) | 2012-12-25 | 2012-12-25 | Biomass electric power plant Waste Heat Recovery heating system |
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| CN103017238A true CN103017238A (en) | 2013-04-03 |
| CN103017238B CN103017238B (en) | 2016-01-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103318896A (en) * | 2013-05-20 | 2013-09-25 | 顾今 | Thermal power plant heating system |
| CN104848709A (en) * | 2014-02-19 | 2015-08-19 | 王建国 | Process system capable of improving heat efficiency of generator set |
| CN105444243A (en) * | 2014-09-02 | 2016-03-30 | 盾安（天津）节能***有限公司 | Waste heat recovery heat supply and water charging system and water charging method |
| CN106225039A (en) * | 2016-08-30 | 2016-12-14 | 中国能源建设集团广东省电力设计研究院有限公司 | Feed pump turbine low-vacuum-operating circulating water heating system and power-economizing method thereof |
| CN106247371A (en) * | 2014-08-28 | 2016-12-21 | 国电龙源电力技术工程有限责任公司 | A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device |
| CN110173347A (en) * | 2019-05-28 | 2019-08-27 | 浙江亿扬能源科技有限公司 | A kind of waste heat recycling system and operation method of coal mine equipment in use |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104848709A (en) * | 2014-02-19 | 2015-08-19 | 王建国 | Process system capable of improving heat efficiency of generator set |
| CN106247371A (en) * | 2014-08-28 | 2016-12-21 | 国电龙源电力技术工程有限责任公司 | A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device |
| CN106247371B (en) * | 2014-08-28 | 2018-12-28 | 国电龙源电力技术工程有限责任公司 | A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device |
| CN105444243A (en) * | 2014-09-02 | 2016-03-30 | 盾安（天津）节能***有限公司 | Waste heat recovery heat supply and water charging system and water charging method |
| CN106225039A (en) * | 2016-08-30 | 2016-12-14 | 中国能源建设集团广东省电力设计研究院有限公司 | Feed pump turbine low-vacuum-operating circulating water heating system and power-economizing method thereof |
| CN110173347A (en) * | 2019-05-28 | 2019-08-27 | 浙江亿扬能源科技有限公司 | A kind of waste heat recycling system and operation method of coal mine equipment in use |
| CN110173347B (en) * | 2019-05-28 | 2020-02-28 | 浙江亿扬能源科技有限公司 | Waste heat recycling system of coal mine in-use equipment and operation method |
| 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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| CN103017238B (en) | 2016-01-06 |
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