CN103017238B - Biomass electric power plant Waste Heat Recovery heating system - Google Patents

Biomass electric power plant Waste Heat Recovery heating system Download PDF

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Publication number
CN103017238B
CN103017238B CN201210583020.7A CN201210583020A CN103017238B CN 103017238 B CN103017238 B CN 103017238B CN 201210583020 A CN201210583020 A CN 201210583020A CN 103017238 B CN103017238 B CN 103017238B
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China
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heat
water
pipeline
flue gas
power plant
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CN201210583020.7A
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Chinese (zh)
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CN103017238A (en
Inventor
李同强
张新波
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浙江工商大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps

Abstract

The present invention relates to a kind of heat reclamation device, disclose a kind of biomass electric power plant Waste Heat Recovery heating system, comprise steam pipework, recirculated cooling water pipeline, inner loop pipeline, it is characterized in that: also comprise heat supplying pipeline, described heat supplying pipeline connects slag heat exchanger, absorb after heat through water water-to-water heat exchanger, be connected to heat user end.The present invention, by heat exchange method, reclaims the waste heat in biomass electric power plant cigarette wind, slag and recirculated cooling water, and in order to production heat supply of living, has heat energy recycle rate high, the advantages such as energy-conserving and environment-protective.

Description

Biomass electric power plant Waste Heat Recovery heating system
Technical field
The present invention relates to a kind of heat reclamation device, particularly relate 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 to enter by chimney by cooling tower, flue gas heat that air 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 pollute environment and air simultaneously.Biomass power plant and coal-fired station important difference is just that in the burnt gas of biomass power plant, sulfur content is extremely low, also can not form sulfuric acid after condensation, etching apparatus.So biomass electric power plant does not have certain temperature requirement to the cigarette wind that it discharges, the heat in cigarette wind can be recycled completely.
Summary of the invention
The present invention is directed to the problem that the used heat such as recirculated cooling water in prior art, flue gas, slag are difficult to Collection and utilization, provide a kind of heating system adopting heat pump techniques, flue gas heat-exchange unit, slag heat exchanger to reclaim biomass electric power plant used heat.
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, comprise steam pipework, recirculated cooling water pipeline, inner loop pipeline, also comprise heat supplying pipeline, described heat supplying pipeline connects slag heat exchanger, absorbs after heat, be connected to heat user end through water water-to-water heat exchanger.Containing a large amount of waste heat in boiler slag, heat supplying pipeline reclaims the waste heat in slag by slag heat exchanger, and the waste heat in water water-to-water heat exchanger recovery boiler cigarette wind and cooling water, and then be transported to heat user end, realize Waste Heat Recovery and heat supply.
As preferably, the present invention also comprises flue gas heat exchange pipeline, described flue gas heat exchange pipeline is provided with flue gas heat-exchange unit, the high-temperature-hot-water obtained through flue gas heat-exchange unit is as the driving heat source of absorption heat pump, absorption heat pump absorption cycle cooling water waste, by water water-to-water heat exchanger delivers to heat user after being heated up further 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 by the effect of flue gas heat exchange circulating pump, used heat in flue gas heat exchange pipeline circulation and stress flue gas, and the hot water temperature being supplied to that sorption type heat pump does driving heat source and lifting absorption heat pump output further.
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 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 recirculated cooling water pipeline and flue gas heat exchange pipeline and obtains heat energy, then by water water-to-water heat exchanger, the heat energy of acquisition 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 does work through steam turbine, and the exhaust steam that steam turbine is discharged is delivered to condenser, and heat energy to be passed to the cooling water in recirculated cooling water pipeline by exhaust steam through condenser after, solidifying water is discharged.
As preferably, described recirculated cooling water pipeline, from cool cycles pond, gets back to cool cycles pond after coolant circulation pump, condenser, sorption type heat pump.Circulating cooling water pump is also provided with in described recirculated cooling water pipeline.Heat energy in the recirculated cooling water pipeline absorbed by absorption heat pump by inner loop pipeline passes to heat supplying pipeline, improves the utilization rate of heat energy.
As preferably, described inner loop pipeline is also provided with internal circulation pump, described internal circulation pump is arranged between absorption heat pump and water water-to-water heat exchanger.
As preferably, described heat supplying pipeline is also provided with heat circulation pump, described heat circulation pump is arranged between slag heat exchanger and water water-to-water heat exchanger.
The present invention is by adopting the used heat in absorption heat pump technology recovery biomass electric power plant recirculated cooling water used heat, flue gas heat-exchange unit recovery cigarette wind used heat, slag heat exchanger recovery slag, and be supplied to life, work heat, there is heat energy recycle rate high, the advantage of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present 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-sorption type 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-heat circulation pump, 51-terminal heat user.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 and detailed description of the invention, 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, from cool cycles pond 21, gets back to cool cycles pond 21 after circulating cooling water pump, condenser 12, sorption type heat pump 7.The steam of steam pipework 1 is after steam turbine 11 does work, the exhaust steam that steam turbine 11 is discharged is delivered to condenser 12, heat energy is passed to recirculated cooling water pipeline 2 through condenser 12 by exhaust steam, recirculated cooling water with heat energy carries out heat exchange with inner loop pipeline 4 after sorption type heat pump 7 absorbs and heats up, and heat energy is passed to heat supplying pipeline 5 through water water-to-water heat exchanger 9 by inner loop pipeline 4 after heating up further through flue gas heat-exchange unit 6.
Recirculated cooling water pipeline 2 through sorption type heat pump 7 absorption cycle cooling water heat energy and heat up and carry out further thermal energy exchange, after flue gas heat-exchange unit 6 heats up further, through water water-to-water heat exchanger 9, heat energy is passed to heat supplying pipeline 5 after being heated up by the heat energy of sorption type heat pump 7 absorption cycle cooling water by inner loop pipeline 4.Improve 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 condenser 12.Recirculated cooling water pipeline 2 discharges heat energy through sorption type heat pump 7.
The exhaust steam that steam turbine 11 is discharged, after steam turbine 11 does work, is delivered to condenser 12 by the steam of steam pipework 1, and exhaust steam becomes solidifying water after through condenser 12 heat energy being passed to the cooling water in recirculated cooling water pipeline 2 and discharges.Steam work done in steam turbine that boiler produces, in the cyclic process of this heating agent, need to release a large amount of condensation heat, exhaust steam after steam turbine work done enters condenser 12 by steam discharge, in the process of condenser 12 condensation, discharge heat energy and condense into water and after backheat, enter boiler again, now, the cooling water temperature in condenser 12, recirculated cooling water pipeline 2 raises.
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 7, after sorption type heat pump heat absorption, gets back to flue gas heat-exchange unit 6 after flue gas heat-exchange unit 6 heats up.Circulating pump 31 is also provided with in described flue gas heat exchange pipeline.Described flue gas heat exchange pipeline absorbs heat through flue gas heat-exchange unit 6, the water temperature in flue gas heat exchange pipeline 3 is made to reach more than 145 DEG C, and then be connected to sorption type heat pump 7 and do driving heat source release heat, then by the effect of circulating pump 31, the used heat in flue gas heat exchange pipeline 3 circulation and stress flue gas.Hot water in flue gas heat exchange pipeline 3 is as the driving heat source of sorption type heat pump 7, sorption type heat pump 7 absorption cycle cooling water waste also heats up and sends into inner loop pipeline 4, and heat energy is passed to heat supplying pipeline 5 by water water-to-water heat exchanger 9 by inner loop pipeline 4 after flue gas heat-exchange unit 6 heats up again.
Described inner loop pipeline 4, through internal circulation pump 41, sorption type 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 recirculated cooling water pipeline 2, flue gas heat-exchange unit 6 in flue gas heat exchange pipeline 3 and obtains heat energy, then by water water-to-water heat exchanger 9, the heat energy of acquisition 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 sorption type heat pump 7 and water water-to-water heat exchanger 9.Water in inner loop pipeline 4 heats up through sorption type heat pump 7 and reaches about 90 DEG C; Then through flue gas heat-exchange unit 6, because the temperature in flue gas is higher, the water in inner loop pipeline 4 can be heated to more than 105 DEG C; Finally, the water in inner loop pipeline 4 enter water water-to-water heat exchanger 9 discharge heat energy heat supply after return water temperature drop to less than 50 DEG C.
Described heat supplying pipeline 5 connects heat user end 51 and slag heat exchanger 10, gets back to terminal heat user 51 after 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 heat circulation pump 52, and heat circulation pump 52 is arranged between water water-to-water heat exchanger 9 and slag heat exchanger 10.Heat energy in heat supplying pipeline 5 is obtained by water water-to-water heat exchanger 9 and slag heat exchanger 10.Heat supplying pipeline 5 water temperature after slag heat exchanger 10 is elevated to more than 50 DEG C, and then again absorbs heat energy after water water-to-water heat exchanger 9, and water temperature reaches more than 70 DEG C and delivers to terminal heat user 51.
The present invention, by heat exchange method, reclaims the waste heat in biomass electric power plant cigarette wind, slag and cooling water, and in order to production heat supply of living, has heat energy recycle rate high, the advantages such as energy-conserving and environment-protective.
Above 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, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, respective change can be done according to actual needs.In sum, this description should not be construed as limitation of the present invention.

Claims (7)

1. a 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), described heat supplying pipeline (5), after slag heat exchanger (10), water water-to-water heat exchanger (9) absorb heat, delivers to terminal heat user (51); Also comprise flue gas heat exchange pipeline (3), described flue gas heat exchange pipeline (3) is provided with flue gas heat-exchange unit (6), the heat medium water of flue gas heat exchange pipeline (3) after flue gas heat-exchange unit (6) heats up as the driving heat source of absorption heat pump (7), flue gas heat exchange pipeline (3), after sorption type heat pump (7) carries out heat absorption, gets back to flue gas heat-exchange unit (6) by flue gas heat exchange circulating pump (31).
2. 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) form circulation line.
3. biomass electric power plant Waste Heat Recovery heating system according to claim 1, is characterized in that: described steam pipework (1) connects steam turbine (11) and condenser (12).
4. biomass electric power plant Waste Heat Recovery heating system according to claim 3, it is characterized in that: the steam of described steam pipework (1) is after steam turbine (11) acting, the exhaust steam that steam turbine (11) is discharged is delivered to condenser (12), exhaust steam after through condenser (12) heat energy being passed to the cooling water in recirculated cooling water pipeline (2) solidifying water discharge.
5. biomass electric power plant Waste Heat Recovery heating system according to claim 1, it is characterized in that: described recirculated cooling water pipeline (2), from cool cycles pond (21), gets back to cool cycles pond (21) after circulating cooling water pump (22), condenser (12), sorption type heat pump (7).
6. according to the biomass electric power plant Waste Heat Recovery heating system described in claim 1 to 5 any one, it is characterized in that: described inner loop pipeline (4) is also provided with internal circulation pump (41).
7. according to the biomass electric power plant Waste Heat Recovery heating system described in claim 1 to 5 any one, it is characterized in that: described heat supplying pipeline (5) is also provided with heat circulation pump (52).
CN201210583020.7A 2012-12-25 2012-12-25 Biomass electric power plant Waste Heat Recovery heating system CN103017238B (en)

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Publication number Priority date Publication date Assignee Title
CN103318896B (en) * 2013-05-20 2016-07-06 顾今 A kind of 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
CN104534450B (en) * 2014-08-28 2016-10-26 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)节能系统有限公司 Waste heat recovery heat supply and water charging system and water charging method
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

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CN1414288A (en) * 2001-10-22 2003-04-30 清华同方股份有限公司 Heat supply device capable of recovering aqueous vapour in fuel gas, fuel oil boiler flue gas
CN101726110A (en) * 2009-11-20 2010-06-09 清华大学 Heatpump type gas-fired boiler waste heat recovery unit
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CN203010751U (en) * 2012-12-25 2013-06-19 李同强 Heat-supply device utilizing waste heat of biomass power plant

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Publication number Priority date Publication date Assignee Title
CN1414288A (en) * 2001-10-22 2003-04-30 清华同方股份有限公司 Heat supply device capable of recovering aqueous vapour in fuel gas, fuel oil boiler flue gas
CN101726110A (en) * 2009-11-20 2010-06-09 清华大学 Heatpump type gas-fired boiler waste heat recovery unit
CN201706478U (en) * 2010-02-10 2011-01-12 同方川崎空调设备有限公司 Heat-recovering type demineralized water heating system
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CN203010751U (en) * 2012-12-25 2013-06-19 李同强 Heat-supply device utilizing waste heat of biomass power plant

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