CN101968236A - System for realizing combined heating based on extraction steam for heating and lithium bromide unit - Google Patents
System for realizing combined heating based on extraction steam for heating and lithium bromide unit Download PDFInfo
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- CN101968236A CN101968236A CN 201010271786 CN201010271786A CN101968236A CN 101968236 A CN101968236 A CN 101968236A CN 201010271786 CN201010271786 CN 201010271786 CN 201010271786 A CN201010271786 A CN 201010271786A CN 101968236 A CN101968236 A CN 101968236A
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 57
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 238000000605 extraction Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000000498 cooling water Substances 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 description 7
- 229940059936 lithium bromide Drugs 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- -1 heat exchanger Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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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 system for realizing the combined heating based on extraction steam from a heat power plant for heating and a lithium bromide unit, belonging to the technical field of heating. The system comprises a boiler, an extraction steam turbine, a steam condenser, a cooling water tower, a cooling water tank, a cooling water circulating pump, a condensing water pump, a low-pressure bleeder heater, a high-pressure bleeder heater, a heat supply network heater, a lithium bromide unit and a heat source water pump, wherein the cold outlet of the steam condenser is connected with the inlet of the heat source water pump, the outlet of the heat source water pump is connected with the cold inlet of the lithium bromide unit, the cold outlet of the lithium bromide unit is connected with the inlet of the cooling water circulating pump, extraction openings of the extraction steam turbine are respectively connected with the hot inlets of the lithium bromide unit and the heat supply network heater, both the hot outlet of the lithium bromide unit and the hot outlet of the heat supply network heater are connected with the inlet of the condensing water pump, return water in the heat supply pipeline network is connected with the warm inlet of the lithium bromide unit, and the warm outlet of the lithium bromide unit is connected with the cold inlet of the heat supply network heater. The invention can minimize the heat loss.
Description
Technical field
The invention belongs to the heat supply process field, particularly utilize the heat supply of steam power plant to draw gas and the system of lithium bromide unit combined heat.
Background technology
At present a lot of steam power plants adopt extraction turbine to carry out cogeneration of heat and power, thereby from steam turbine, extract a part of steam out and provide heat supply for the user by the recirculated water that heat-exchanger rig heats heating network, the then pushing turbine generating of all the other steam, the steam of these pushing turbine generatings becomes the exhaust steam that can not do work again after by steam turbine acting generating, being recycled water quench during by condenser is to get back to boiler behind the aqueous water, and recirculated cooling water is taken away the heat in these exhaust steam by cooling tower and is discharged in the atmosphere.
The existing system that utilizes the steam power plant that extraction turbine carries out cogeneration of heat and power as shown in Figure 1, this system comprises: boiler 1, extraction turbine 2, condenser 3, cooling tower 4, cooling pond 5, water circulating pump 6, condensate pump 7, low pressure bleeder heater 8, high pressure bleeder heater 9, heat supply network heating heat exchanger 10; Its annexation is: the vapor outlet port of boiler 1 links to each other with the inlet of extraction turbine 2, the primary outlet 21 of extraction turbine 2 links to each other with first inlet 32 of condenser 3, and the extraction opening 22 of extraction turbine 2 links to each other with the hot vapour inlet 101 of heat supply network heating heat exchanger 10; First outlet 31 of condenser 3 links to each other with the inlet of condensate pump 7; The condensation-water drain of condensate pump 7 links to each other with low pressure bleeder heater 8, high pressure bleeder heater 9 successively; Second inlet, 33, second outlet 34 of condenser 3 connects into a cooling water circulation loop with cooling tower 4, cooling pond 5, water circulating pump 6; The heat outlet 102 of heat supply network heating heat exchanger 10 also links to each other with the inlet of condensate pump 7; Heat outlet 104, the heat inlet 103 of heat supply network heating heat exchanger 10 are unified into the heat supply water loop with heat supply network.
The course of work of said system is: the steam that boiler 1 produces enters extraction turbine 2, extraction turbine 2 has two outlets: 21 primary outlets for the steam that is used to generate electricity, 22 is extraction opening, the steam that is used to generate electricity becomes after pushing turbine 2 generating and enters condenser 3 after the exhaust steam that can not do work is come out by primary outlet 21, in condenser 3, be recycled water quench and be liquid condensed water, these condensed waters enter by condensate pump 7 and enter high pressure bleeder heater 9 again after low pressure bleeder heater 8 is heated, entered boiler after the heating once more in high pressure bleeder heater 9, the steam of extracting out from the extraction opening 22 of extraction turbine 2 enters heat supply network heating heat exchanger 10 water the heating network is heated.And the heat of a large amount of low taste that exhaust steam contained that the steam that is used for generating electricity forms in pushing turbine 2 generating back is recycled cooling water and takes away, and discharges into the atmosphere by cooling tower 4.
Because at present the maximal efficiency of steam turbine has only about 40%, the heat energy in the steam only has and changes useful electric energy about 40% into, and all the other 60% retains in the exhaust steam, and these energy recirculated water that is cooled is taken away, and is discharged in the atmosphere by cooling tower at last.Like this, not only a large amount of heat energy are discharged in the atmosphere, cause the significant wastage of energy and to the thermal pollution of air, and because cooling circulating water evaporation in a large number the time through cooling tower, cause a large amount of wastes of water resource, the water circulating pump of cooling water and the blower fan of cooling tower also will consume a large amount of electric energy simultaneously.
The lithium bromide refrigerating unit, promptly lithium-bromide absorption-type refrigerating machine is to utilize the binary solution of lithium bromide and water composition right as working medium, drives a kind of refrigeration plant of finishing kind of refrigeration cycle by heat energy.This equipment is made up of two groups of regenerators, condenser, evaporimeter, absorber, heat exchanger, solution pump and heat regenerators.Generally be used in to various buildings provide summer and freeze.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, propose that a kind of heat supply that utilizes steam power plant is drawn gas and the system of lithium bromide unit combined heat, the present invention does not have energy to be discharged in vain, and thermal loss is reduced.
The present invention proposes that the heat supply that utilizes steam power plant is drawn gas and the system of lithium bromide unit combined heat, this system mainly comprises: boiler, extraction turbine, condenser, cooling tower, cooling pond, cooling water cycle water pump, condensate pump, low pressure bleeder heater, high pressure bleeder heater, heat exchangers for district heating; It is characterized in that, also comprise lithium bromide unit, thermal source water pump, wherein: the outlet of boiler links to each other with the inlet of extraction turbine, the primary outlet of extraction turbine links to each other with the heat of condenser inlet, the heat outlet of condenser links to each other with the inlet of condensate pump, the cold outlet of condenser links to each other with the inlet of thermal source water pump, and the cold outlet of condenser simultaneously also connects into a cooling water circulation loop with cooling tower, cooling pond, water circulating pump; The cold inlet of heat source water delivery side of pump and lithium bromide unit links to each other, the cold outlet of lithium bromide unit links to each other with the inlet of cooling water cycle water pump, the cooling water cycle water delivery side of pump links to each other with the cold inlet of condenser, the condensate water delivery side of pump links to each other with low pressure bleeder heater, high pressure bleeder heater successively, and the outlet of high pressure bleeder heater links to each other with the inlet of boiler; The extraction opening of extraction turbine links to each other with the heat inlet of lithium bromide unit and heat exchangers for district heating respectively, the heat outlet of lithium bromide unit and the heat outlet of heat exchangers for district heating all link to each other with the inlet of condensate pump, the backwater of heating network links to each other with the temperature inlet of lithium bromide unit, the temperature outlet of lithium bromide unit links to each other with the cold inlet of heat exchangers for district heating, and the cold outlet of heat exchangers for district heating links to each other with the water supply of heating network.
Characteristics of the present invention and effect:
The present invention transforms the equipment that existing steam power plant adopts extraction turbine to carry out cogeneration of heat and power, has increased lithium bromide unit and thermal source water pump in system.
One aspect of the present invention can reclaim by the lithium bromide unit and be recycled the energy (heat energy in the exhaust steam that can not do work again just) that cooling water is taken away, directly drive the lithium bromide unit with steam on the other hand, do not need to consume, do not need to consume extraction steam for factories yet, but directly utilize heat supply to draw gas, just can obtain the condensation waste heat.Energy part in the exhaust steam is used to heat the recirculated water of heating network, and another part does not have energy to be discharged in vain along with condensed water is got back in the boiler, makes the thermal loss minimum.
Accompanying drawing is described
Fig. 1 is conventional extraction turbine power generation and heat supply system architecture and workflow schematic diagram.
Fig. 2 draws gas for the heat supply that utilizes steam power plant of the present invention and the structure and the workflow schematic diagram of the system of lithium bromide unit combined heat.
The specific embodiment
The heat supply that utilizes steam power plant that the present invention proposes is drawn gas and the system structure figure and the embodiment of lithium bromide unit combined heat are described in detail as follows:
Structure of the present invention as shown in Figure 2, this system mainly comprises: boiler 1, extraction turbine 2, condenser 3, cooling tower 4, cooling pond 5, cooling water cycle water pump 6, condensate pump 7, low pressure bleeder heater 8, high pressure bleeder heater 9, heat exchangers for district heating 10; It is characterized in that, also comprise lithium bromide unit 11, thermal source water pump 12, wherein: the outlet of boiler 1 links to each other with the inlet of extraction turbine 2, the primary outlet 21 of extraction turbine 2 links to each other with the heat of condenser 3 inlet 32, the heat of condenser 3 outlet 31 links to each other with the inlet of condensate pump 7, the cooling water outlet 34 of condenser 3 links to each other with the inlet of thermal source water pump 12, and the cold outlet 34 of condenser 3 simultaneously also connects into a cooling water circulation loop with cooling tower 4, cooling pond 5, water circulating pump 6; The cold inlet 111 of the outlet of thermal source water pump 12 and lithium bromide unit 11 links to each other, and the cold outlet 112 of lithium bromide unit links to each other with the inlet of cooling water cycle water pump 6, and the outlet of cooling water cycle water pump 6 links to each other with the cold inlet 33 of condenser 3; The outlet of condensate pump 7 links to each other with low pressure bleeder heater 8, high pressure bleeder heater 9 successively, and the outlet of high pressure bleeder heater 9 links to each other with the inlet of boiler 1; The extraction opening 22 of extraction turbine 2 links to each other with the heat inlet 113 of lithium bromide unit 11 and the heat inlet 101 of heat exchangers for district heating 10 respectively, the heat outlet 114 of lithium bromide unit 11 and the heat outlet 102 of heat exchangers for district heating 10 all link to each other with the inlet of condensate pump 7, the backwater of heating network links to each other with the temperature inlet 115 of lithium bromide unit 11, the temperature of lithium bromide unit 11 outlet 116 links to each other with the cold inlet 103 of heat exchangers for district heating 10, and the cold outlet 104 of heat exchangers for district heating 10 links to each other with the water supply of heating network.
Its course of work is: the steam of extracting out from the extraction opening of extraction turbine enters the lithium bromide unit, for the lithium bromide unit provides energy, the cold import that the cooling circulating water that is come out by the cold outlet of condenser enters the lithium bromide unit, come out to get back to condenser from the cold outlet of heat pump by lithium bromide unit cooling back as chilled water by water circulating pump, the backwater of heating network enters from the warm import of lithium bromide unit, thereby taking away to be heated to improve after the temperature after the temperature of lithium bromide exports out as the condensation heat that cooling water produces the lithium bromide unit enters heat exchangers for district heating, is come out to enter the heating network heat supply after the heating once more.Like this, can reclaim by heat pump on the one hand and be recycled the energy (heat energy in the exhaust steam that can not do manual work again just) that cooling water is taken away, directly drive the lithium bromide unit with steam on the other hand, energy part in the exhaust steam is used to heat the recirculated water of heating network, another part is along with condensed water is got back in the boiler, do not have energy to be discharged in vain, make the thermal loss minimum.
The embodiment of capital equipment of the present invention is respectively described below:
1) boiler 1: power plant has boiler now
2) extraction turbine 2: the existing steam turbine of power plant, extract the steam turbine that steam is supplied with hot user out from intergrade, and extraction pressure is decided according to user's the needs and the requirement of product line, can adjust within the specific limits.
3) condenser 3, cooling tower 4, cooling pond 5, cooling water cycle water pump 6, condensate pump 7, low pressure bleeder heater 8, high pressure bleeder heater 9, heat exchangers for district heating 10 are the existing equipment of power plant.
4) the lithium bromide refrigerating unit 11, are the refrigeration products of the maturation of routine.
Claims (1)
1. a utilization utilizes the heat supply of steam power plant to draw gas and the system of lithium bromide unit combined heat, and this system mainly comprises: boiler, extraction turbine, condenser, cooling tower, cooling pond, cooling water cycle water pump, condensate pump, low pressure bleeder heater, high pressure bleeder heater, heat exchangers for district heating; It is characterized in that, also comprise lithium bromide unit and thermal source water pump, wherein: the outlet of boiler links to each other with the inlet of extraction turbine, the primary outlet of extraction turbine links to each other with the heat of condenser inlet, the heat outlet of condenser links to each other with the inlet of condensate pump, the cold outlet of condenser links to each other with the inlet of thermal source water pump, and the cold outlet of condenser simultaneously also connects into a cooling water circulation loop with cooling tower, cooling pond, water circulating pump; The cold inlet of heat source water delivery side of pump and lithium bromide unit links to each other, the cold outlet of lithium bromide unit links to each other with the inlet of cooling water cycle water pump, the cooling water cycle water delivery side of pump links to each other with the cold inlet of condenser, the condensate water delivery side of pump links to each other with low pressure bleeder heater, high pressure bleeder heater successively, and the outlet of high pressure bleeder heater links to each other with the inlet of boiler; The extraction opening of extraction turbine links to each other with the heat inlet of lithium bromide unit and heat exchangers for district heating respectively, the heat outlet of lithium bromide unit and the heat outlet of heat exchangers for district heating all link to each other with the inlet of condensate pump, the backwater of heating network links to each other with the temperature inlet of lithium bromide unit, the temperature outlet of lithium bromide unit links to each other with the cold inlet of heat exchangers for district heating, and the cold outlet of heat exchangers for district heating links to each other with the water supply of heating network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271786 CN101968236A (en) | 2010-09-03 | 2010-09-03 | System for realizing combined heating based on extraction steam for heating and lithium bromide unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271786 CN101968236A (en) | 2010-09-03 | 2010-09-03 | System for realizing combined heating based on extraction steam for heating and lithium bromide unit |
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| CN101968236A true CN101968236A (en) | 2011-02-09 |
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| CN 201010271786 Pending CN101968236A (en) | 2010-09-03 | 2010-09-03 | System for realizing combined heating based on extraction steam for heating and lithium bromide unit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345895A (en) * | 2011-07-20 | 2012-02-08 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
| CN102607091A (en) * | 2012-04-09 | 2012-07-25 | 天津临港大地新能源建设发展有限公司 | Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply |
| CN102943697A (en) * | 2012-08-15 | 2013-02-27 | 中能服(北京)节能投资有限公司 | Exhausted-steam and after-heat recovery device of wet-cold power plant and recovery method thereof |
| CN103175247A (en) * | 2011-12-23 | 2013-06-26 | 河南艾莫卡节能科技有限公司 | Heating method of absorption type heat pump and multilevel series-connected absorption type heat pump heating system |
| CN103868127A (en) * | 2014-03-01 | 2014-06-18 | 双良节能系统股份有限公司 | Afterburning-type lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water |
| CN103912908A (en) * | 2013-01-06 | 2014-07-09 | 孙霆 | Power station condensation heat recycling system and method |
| CN110425902A (en) * | 2019-08-26 | 2019-11-08 | 华能国际电力股份有限公司 | Flue gas waste heat recycling system and method after wet desulphurization |
| CN116358019A (en) * | 2023-03-23 | 2023-06-30 | 山西漳山发电有限责任公司 | Multi-stage heat supply system for exhaust steam waste heat of non-rising back pressure steam turbine of air cooling unit |
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| CN201568085U (en) * | 2009-12-21 | 2010-09-01 | 江苏双良空调设备股份有限公司 | Absorption heat pump directly recovers steam turbine exhaust heat cogeneration device of power station |
| CN201779751U (en) * | 2010-09-03 | 2011-03-30 | 北京中科华誉能源技术发展有限责任公司 | Heating system combining lithium bromide machine set with heating steam bleeding |
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2010
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| CN101231004A (en) * | 2008-02-28 | 2008-07-30 | 清华大学 | A central heating system with large temperature difference |
| CN201560812U (en) * | 2009-10-30 | 2010-08-25 | 北京联合优发能源技术有限公司 | Cogeneration low temperature heat energy recovery device |
| CN201568085U (en) * | 2009-12-21 | 2010-09-01 | 江苏双良空调设备股份有限公司 | Absorption heat pump directly recovers steam turbine exhaust heat cogeneration device of power station |
| CN201779751U (en) * | 2010-09-03 | 2011-03-30 | 北京中科华誉能源技术发展有限责任公司 | Heating system combining lithium bromide machine set with heating steam bleeding |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345895B (en) * | 2011-07-20 | 2013-06-05 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
| CN102345895A (en) * | 2011-07-20 | 2012-02-08 | 双良节能系统股份有限公司 | Steam-water heating system for thermal power plant |
| CN103175247A (en) * | 2011-12-23 | 2013-06-26 | 河南艾莫卡节能科技有限公司 | Heating method of absorption type heat pump and multilevel series-connected absorption type heat pump heating system |
| CN103175247B (en) * | 2011-12-23 | 2016-09-21 | 河南艾莫卡节能科技有限公司 | The heat supply method of absorption heat pump and the absorption type heat pump heat distribution system of plural serial stage |
| CN102607091A (en) * | 2012-04-09 | 2012-07-25 | 天津临港大地新能源建设发展有限公司 | Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply |
| CN102607091B (en) * | 2012-04-09 | 2014-11-05 | 天津临港大地新能源建设发展有限公司 | Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply |
| CN102943697B (en) * | 2012-08-15 | 2015-06-17 | 中能服(北京)节能投资有限公司 | Exhausted-steam and after-heat recovery device of wet-cold power plant and recovery method thereof |
| CN102943697A (en) * | 2012-08-15 | 2013-02-27 | 中能服(北京)节能投资有限公司 | Exhausted-steam and after-heat recovery device of wet-cold power plant and recovery method thereof |
| CN103912908A (en) * | 2013-01-06 | 2014-07-09 | 孙霆 | Power station condensation heat recycling system and method |
| CN103868127B (en) * | 2014-03-01 | 2016-04-27 | 双良节能系统股份有限公司 | The band afterburning suction-type lithium bromide heat-exchange system of two-way hot water is provided simultaneously |
| CN103868127A (en) * | 2014-03-01 | 2014-06-18 | 双良节能系统股份有限公司 | Afterburning-type lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water |
| CN110425902A (en) * | 2019-08-26 | 2019-11-08 | 华能国际电力股份有限公司 | Flue gas waste heat recycling system and method after wet desulphurization |
| CN116358019A (en) * | 2023-03-23 | 2023-06-30 | 山西漳山发电有限责任公司 | Multi-stage heat supply system for exhaust steam waste heat of non-rising back pressure steam turbine of air cooling unit |
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Owner name: SHENYANG HUAYU GROUND SOURCE HEAT PUMP HEATING CO. Free format text: FORMER OWNER: BEIJING ZHONGKE HUAYU ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20110916 |
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Application publication date: 20110209 |