CN103673031A - System capable of greatly lowering combined heat and power generation centralized heating temperature - Google Patents
System capable of greatly lowering combined heat and power generation centralized heating temperature Download PDFInfo
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- CN103673031A CN103673031A CN201310654739.XA CN201310654739A CN103673031A CN 103673031 A CN103673031 A CN 103673031A CN 201310654739 A CN201310654739 A CN 201310654739A CN 103673031 A CN103673031 A CN 103673031A
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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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The invention provides a system capable of greatly lowering the combined heat and power generation centralized heating temperature. An absorption type heat exchange unit and a multi-stage electric driving heat pump are introduced and used for conducting multiple times of heat exchange use on a heat source through a power source, the utilization efficiency of the steam heat source is improved, and heat is better supplied to a user. A solar collector is introduced and used for conducting temperature rise on primary net return water through solar energy, namely, clean energy, in an energy-saving and environmentally friendly mode. In addition, a steam double-effect absorption type heat pump, a steam single-effect absorption type heat pump and a steam large-temperature-difference absorption type heat pump are introduced and used for recycling low-grade heat stage by stage, dead steam in a turbine is effectively used, and the utilization efficiency of the energy is improved. The primary net supply water temperature is lowered to be 90 DEG C, the heating steam extraction flow of a thermal power plant is saved, and the power generation capacity of the thermal power plant is increased. Meanwhile, the heating water temperature is lowered, and therefore the consumption of thermal insulation materials is lowered, and the thermal losses of heating pipelines are reduced.
Description
Technical field
The invention belongs to thermoelectricity co-generating heat supplying field, relate in particular to a kind of system that significantly reduces cogeneration of heat and power central heating temperature.
Background technology
In recent years, along with the increasing of the increase of China's urban heat supplying area and industrial premises, building of production line, made China's heating power consumption figure rapid growth.From heat-supplying mode, analyze, China resident heating at present mainly contains following several mode: cogeneration of heat and power mode, middle-size and small-size district boiler room central heating, household small-size gas water-heating furnace, family's coal furnace etc.Wherein cogeneration of heat and power mode is to utilize after the high-grade heat energy power-generating of fuel, by the technology of the comprehensive utilization energy of its low grade heat energy heat supply.At present the average generating efficiency of 3,000,000 kilowatts of firepower electrical plants of China is 33%, and generating efficiency can reach 20% during steam power plant's heat supply, in 80% remaining heat, more than 70% can be used for heat supply.The fuel of 10000 kilojoule heats, adopts cogeneration of heat and power mode, can produce 2000 kilojoule electric power and 7000 kilojoule heats.And adopting the generating of common thermal power plant, this 2000 kilojoule electric power need consume 6000 kilojoule fuel.Therefore, the electric power of cogeneration of heat and power mode output is deducted to its fuel consumption according to the generating efficiency of common power plant, remaining 4000 kilojoule fuel can produce 7000 kilojoule heats.In this sense, the efficiency of steam power plant's heat supply is 170%, is about 2 times of medium small boiler room heating efficiency.Therefore when conditions permit, should first develop the heating system of cogeneration of heat and power.However, in cogeneration of heat and power mode, for hankering or existing some problems, for example: exhaust steam in steam turbine directly enters cooling tower and wasted a large amount of energy, a large amount of latent heats of vaporization are not fully used.The required steam of heat supply simultaneously greatly reduces generating efficiency etc.In the steam heating pipeline of high temperature, need a large amount of insulation materials to reduce the loss of heat on the other hand; In the situation that heating temperature is higher, although use more insulation material can cause larger thermal losses.
Summary of the invention
For the problem that can not be fully utilized of a large amount of latent heats of vaporization in exhaust steam in steam turbine, and the shortcoming of a large amount of thermal losses in hot duct, the invention provides a kind of system that significantly reduces cogeneration of heat and power central heating temperature.
The present invention is that the technical scheme that technical solution problem adopts is:
In steam power plant, in steam turbine, a part of high-temperature steam drives generator generating, another part high-temperature steam is input to respectively steam double-effect absorption heat pump, steam single-effective absorption heat pump, the large temperature difference absorption heat pump of steam, as the power source participation heat exchange of absorption type heat pump assemblys at different levels;
Weary gas in steam turbine enters into condensing engine, the hot water of 40 ℃ after heat exchange accesses steam double-effect absorption heat pump, steam single-effective absorption heat pump, the large temperature difference absorption heat pump of steam in parallel, as the low-temperature heat source of absorption type heat pump assemblys at different levels, after heat exchange, return in condenser;
In heat exchange station, one secondary net of 90 ℃ supplies water input absorption heat exchange unit as power source, after acting cooling, continue the low-temperature heat source as this absorption heat exchange unit, as temperature after low-temperature heat source heat exchange, be reduced to 25 ℃, this hot water of 25 ℃ is input to the vaporizer side in multistage electric drive heat pump as low-temperature heat source again to make condenser side provide the hot water heating of 60 ℃ for user, the secondary net backwater of 5 ℃ that vaporizer side from multistage electric drive heat pump is discharged is input in solar thermal collector a secondary net return water temperature is heated to 15 ℃, the hot water of 15 ℃ enters steam double-effect absorption heat pump successively, steam single-effective absorption heat pump, the large temperature difference absorption heat pump of steam is heated to respectively 55 ℃, 70 ℃, 90 ℃, the hot water input absorption heat exchange unit of 90 ℃.
Absorption heat pumps at different levels all adopt the steam turbine heating of the about 0.3MPa driving of drawing gas.
The invention has the beneficial effects as follows:
One secondary net supply water temperature is reduced to 90 ℃, has saved the heating amount of drawing gas of steam power plant, has increased the generating capacity of steam power plant; The reduction of the water temperature that simultaneously heats has been saved the consumption of insulation material and has been reduced heat supply pipeline thermal losses.
Introducing absorption heat exchange unit, multistage electric drive heat pump, repeatedly thermal source is carried out using with power source and heat exchange, improved the utilization ratio of steam source, is better user's heat supply;
Introduce solar thermal collector, utilize this clean energy resource of solar energy to the secondary net backwater energy-conserving and environment-protective that heat up;
Introduce in addition steam double-effect absorption heat pump, steam single-effective absorption heat pump, the large temperature difference absorption heat pump of steam, reclaim step by step low-grade heat, effectively utilized the exhaust steam in steam turbine, improved efficiency of energy utilization.
Native system provides power plant's generating efficiency more than 30%.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: 1. steam turbine, 2. generator, 3. condensing engine, 4. cooling tower, 6. steam double-effect absorption heat pump, 7. steam single-effective absorption heat pump, the 8. large temperature difference absorption heat pump of steam, 10. absorption heat exchange unit, 11. multistage electric drive heat pumps, 12. solar thermal collectors, 13. users
The specific embodiment
In steam power plant, in steam turbine 1, a part of high-temperature steam drives generator 2 generatings, another part high-temperature steam is input to respectively steam double-effect absorption heat pump 6, steam single-effective absorption heat pump 7, the large temperature difference absorption heat pump 8 of steam, as the thermal source participation heat exchange of absorption type heat pump assemblys at different levels;
Weary gas in steam turbine 1 enters into condensing engine 3, the hot water of 40 ℃ after heat exchange accesses steam double-effect absorption heat pump 6, steam single-effective absorption heat pump 7, the large temperature difference absorption heat pump 8 of steam in parallel, as the low-temperature heat source of absorption type heat pump assemblys at different levels, after heat exchange, return in condenser 3;
In heat exchange station, one secondary net of 90 ℃ supplies water input absorption heat exchange unit 10 as power source, after acting cooling, continue the low-temperature heat source as this absorption heat exchange unit 10, as temperature after low-temperature heat source heat exchange, be reduced to 25 ℃, this hot water of 25 ℃ is input to the vaporizer side in multistage electric drive heat pump 11 as low-temperature heat source again to make condenser side provide the hot water heating of 60 ℃ for user, the secondary net backwater of 5 ℃ that vaporizer side from multistage electric drive heat pump 11 is discharged is input in solar thermal collector 12 a secondary net return water temperature is heated to 15 ℃, the hot water of 15 ℃ enters steam double-effect absorption heat pump 6 successively, steam single-effective absorption heat pump 7, the large temperature difference absorption heat pump 8 of steam is heated to respectively 55 ℃, 70 ℃, 90 ℃, the hot water input absorption heat exchange unit 10 of 90 ℃.
Absorption heat pumps at different levels all adopt the steam turbine heating of the about 0.3MPa driving of drawing gas.
The present invention is not limited to the present embodiment, and equivalent concepts or change in any technical scope disclosing in the present invention, all classify protection scope of the present invention as.
Claims (1)
1. significantly reduce a system for cogeneration of heat and power central heating temperature, it is characterized in that:
In steam power plant, in steam turbine (1), a part of high-temperature steam drives generator (2) generating, another part high-temperature steam is input to respectively steam double-effect absorption heat pump (6), steam single-effective absorption heat pump (7), the large temperature difference absorption heat pump of steam (8), as the power source participation heat exchange of absorption type heat pump assemblys at different levels;
Weary gas in steam turbine (1) enters into condensing engine (3), the hot water of 40 ℃ after heat exchange accesses steam double-effect absorption heat pump (6), steam single-effective absorption heat pump (7), the large temperature difference absorption heat pump of steam (8) in parallel, as the low-temperature heat source of absorption type heat pump assemblys at different levels, after heat exchange, return in condenser (3);
In heat exchange station, one secondary net of 90 ℃ supplies water input absorption heat exchange unit (10) as power source, after acting cooling, continue the low-temperature heat source as this absorption heat exchange unit (10), as temperature after low-temperature heat source heat exchange, be reduced to 25 ℃, this hot water of 25 ℃ is input to the vaporizer side in multistage electric drive heat pump (11) as low-temperature heat source again to make condenser side provide the hot water heating of 60 ℃ for user, the secondary net backwater of 5 ℃ that vaporizer side from multistage electric drive heat pump (11) is discharged is input in solar thermal collector (12) a secondary net return water temperature is heated to 15 ℃, the hot water of 15 ℃ enters steam double-effect absorption heat pump (6) successively, steam single-effective absorption heat pump (7), the large temperature difference absorption heat pump of steam (8) is heated to respectively 55 ℃, 70 ℃, 90 ℃, the hot water input absorption heat exchange unit (10) of 90 ℃.
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| CN201310654739.XA CN103673031B (en) | 2013-12-04 | 2013-12-04 | The system of cogeneration of heat and power central heating temperature is greatly reduced |
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| CN201310654739.XA CN103673031B (en) | 2013-12-04 | 2013-12-04 | The system of cogeneration of heat and power central heating temperature is greatly reduced |
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| CN103673031A true CN103673031A (en) | 2014-03-26 |
| CN103673031B CN103673031B (en) | 2016-06-29 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631404A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | The lithium bromide heat pump heating device of solar energy waste heat recycling |
| CN109631403A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Power plant's cogeneration system |
| CN109631395A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Lithium bromide heat pump heating device |
| CN109631394A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Integrate a variety of waste heat coupling heating systems |
| CN109631401A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Power plant's cogeneration system of lithium bromide heat pump heating |
| CN109631402A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | The float glass waste-heat recovery device of lithium bromide heat pump heating |
| CN111351110A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Solar energy supplied lithium bromide heat pump heat supply method |
| CN111351114A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Float glass waste heat recovery method for lithium bromide heat pump heating |
| CN111351269A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Lithium bromide heat pump heating method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109539A (en) * | 2006-07-17 | 2008-01-23 | 葆光（大连）节能技术研究所有限公司 | Method for enlarging thermoelectricity co-generating heat supplying scale |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| WO2010046450A1 (en) * | 2008-10-22 | 2010-04-29 | Mwm Gmbh | Combined heat and power generation subsystem, combined heat and power generation system, and method for the operation of a combined heat and power generation system |
| CN202118983U (en) * | 2011-06-10 | 2012-01-18 | 安徽省科捷再生能源利用有限公司 | Thermal power cogeneration central heating system based on absorption heat transfer |
| CN203685321U (en) * | 2013-12-04 | 2014-07-02 | 大连葆光节能空调设备厂 | System for greatly lowering central heating temperature of heat and power cogeneration |
-
2013
- 2013-12-04 CN CN201310654739.XA patent/CN103673031B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109539A (en) * | 2006-07-17 | 2008-01-23 | 葆光（大连）节能技术研究所有限公司 | Method for enlarging thermoelectricity co-generating heat supplying scale |
| CN101329117A (en) * | 2008-07-23 | 2008-12-24 | 北京环能瑞通科技发展有限公司 | Integral type absorption type heat exchange machine unit |
| WO2010046450A1 (en) * | 2008-10-22 | 2010-04-29 | Mwm Gmbh | Combined heat and power generation subsystem, combined heat and power generation system, and method for the operation of a combined heat and power generation system |
| CN202118983U (en) * | 2011-06-10 | 2012-01-18 | 安徽省科捷再生能源利用有限公司 | Thermal power cogeneration central heating system based on absorption heat transfer |
| CN203685321U (en) * | 2013-12-04 | 2014-07-02 | 大连葆光节能空调设备厂 | System for greatly lowering central heating temperature of heat and power cogeneration |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631404A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | The lithium bromide heat pump heating device of solar energy waste heat recycling |
| CN109631403A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Power plant's cogeneration system |
| CN109631395A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Lithium bromide heat pump heating device |
| CN109631394A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Integrate a variety of waste heat coupling heating systems |
| CN109631401A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | Power plant's cogeneration system of lithium bromide heat pump heating |
| CN109631402A (en) * | 2018-12-20 | 2019-04-16 | 大连民族大学 | The float glass waste-heat recovery device of lithium bromide heat pump heating |
| CN111351110A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Solar energy supplied lithium bromide heat pump heat supply method |
| CN111351114A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Float glass waste heat recovery method for lithium bromide heat pump heating |
| CN111351269A (en) * | 2018-12-20 | 2020-06-30 | 大连民族大学 | Lithium bromide heat pump heating method |
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| CN103673031B (en) | 2016-06-29 |
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Effective date of registration: 20210429 Address after: 116600 No. 8-21 west the Yellow Sea Road, Dalian Development Zone, Liaoning Patentee after: Dalian Baoguang energy saving air conditioning Co.,Ltd. Address before: 116600, No. 306, building 3, north science and technology incubation base, No. 34, Harbin Road, Dalian Development Zone, Dalian, Liaoning Patentee before: DALIAN BAOGUANG ENERGY-SAVING AIR CONDITIONING EQUIPMENT FACTORY |