CN101261001A - Solar energy assisted coal fired thermal power plant integrated backheating device - Google Patents
Solar energy assisted coal fired thermal power plant integrated backheating device Download PDFInfo
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- CN101261001A CN101261001A CNA2008101042858A CN200810104285A CN101261001A CN 101261001 A CN101261001 A CN 101261001A CN A2008101042858 A CNA2008101042858 A CN A2008101042858A CN 200810104285 A CN200810104285 A CN 200810104285A CN 101261001 A CN101261001 A CN 101261001A
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Abstract
The invention relates to an integrated regenerative device for a solar auxiliary coal-fired thermal power plant, belonging to the solar heat utilization field. A technical proposal of a combination of a solar heat collecting steam generator and the steam extraction of a steam turbine is adopted in the regenerative device for the coal-fired thermal power plant to solve defects in solar thermal power generation, such as instability and so on. When sunlight is sufficient, part or all of steam extraction of the steam turbine side in a unit regenerative system is closed, and steam generated by the solar heat collecting steam generator is used to replace the steam extraction of the steam turbine side of the regenerative device for heating feedwater; when sunlight is not sufficient, the complementary operation of solar energy and fossil energy can be implemented through adjusting the connection relation between the solar heat collecting steam generator and the prior steam extraction of the steam turbine side. At night or when a solar thermal collector has failure, the prior condition of the thermal power generation before reconstruction can be recovered through switching back to the prior steam extraction of the steam turbine side. Because the steam extraction of the steam turbine side is reduced, the capability for work of the steam turbine is improved, and the coal consumption for power generation can be obviously reduced. The integrated regenerative device can be used for improving a regenerative system of a conventional coal-fired thermal power plant.
Description
Technical field
The invention belongs to solar energy heat utilization field, relate to a kind of solar energy assisted coal fired thermal power plant integrated backheating device.
Background technology
In China; the thermal power plant is as main force's type of generating electricity; consumed the total consumption of coal amount more than 50%; though thermoelectricity has advantageous advantage on cost of electricity-generating and technology maturation degree; but under country's " energy-saving and emission-reduction " policy, environmental protection and cause that the greenhouse gas emission problem of climate warming makes that thermoelectricity industry energy-saving task is significant.And the thermoelectricity conservation measures mainly is divided into two classes: the first kind is for replacing old little unit gradually by building advanced big capacity unit; Second class is for to reach energy-conservation purpose by the unit transformation.For a large amount of active service units of China, the technological transformation meaning is more great, and is more urgent.
Solar energy mainly utilizes form that photovoltaic utilization and heat utilization are arranged as a kind of inexhaustible, nexhaustible clean energy resource at present.Solar thermal utilization can be divided into three kinds by optically focused mode difference: slot type, tower and dish formula.Wherein the slot type thermal-arrest is acknowledged as the most possible extensive form of utilizing, and the cost conventional thermal power generation that can match in excellence or beauty after scale, industrialization.But since solar energy with round the clock, variable factor such as weather, its energy supply stability is restricted.If will realize continual and steady energy supply, must build huge accumulation of heat facility, cost also will raise significantly.
The solar energy of renewable energy Source Type is introduced conventional thermal power plant heat regenerative system.Not only opened up a new road, can realize simultaneously the extensive utilization of solar energy, reduced greenhouse gas emission for the energy saving for power plants transformation, overcome because of the Changes in weather solar energy resources unstable can not continuous and stable electric generation etc. deficiency.
Summary of the invention
The present invention seeks in order to solve the deficiencies such as unstability in the solar energy thermal-power-generating, a kind of solar energy assisted coal fired thermal power plant integrated backheating device is provided, it is characterized in that: the steam (vapor) outlet of solar energy heating steam generator 5 is connected to the inlet of solar energy heating steam generator steam (vapor) outlet valve 7, the outlet of solar energy heating steam generator steam (vapor) outlet valve 7 is connected to the steam inlet of firepower electrical plant heat regenerative system heater 1, (annotate: it is hydrophobic that the condensed condensed water of steam is called steam for the hydrophobic outlet of the steam of heater 1, become the steam hydrophobic pipeline together with hydrophobic respective line, valve is called hydrophobic valve) be connected to the inlet of solar energy heating steam generator hydrophobic valve 2 and the inlet of heater condensate valve 3, the outlet of solar energy heating steam generator hydrophobic valve 2 is connected to the hydrophobic inlet of solar energy heating steam generator 5, and the outlet of heater condensate valve 3 is connected to upper level heater condensate inlet 4.
Described solar energy heating steam generator 5 is a trough type solar heat-collector, and the hot temperature of its maximum set can reach about 400 ℃.
The steam that solar energy heating steam generator 5 produces is by solar energy heating steam generator steam (vapor) outlet valve 7 input heaters 1, be used for heating the feedwater (annotate: the heated water of heater is called feedwater) that flows into heater 1 from upper level heater water out 6, the feedwater after the heating flows into next stage heater water inlet 8.Be back to the hydrophobic inlet of solar energy heating steam generator 5 by the solar energy heating steam generator hydrophobic valve 2 that is connected with heater 1 bottom by the steam of heater 1 condensation is hydrophobic, finish once circulation.
The invention has the beneficial effects as follows that the heat regenerative system that the present invention has adopted solar energy heating steam generator and extracted steam from turbine to combine has solved the solar energy thermal-power-generating mode and directly depended on problems such as the frequent and instability of astronomical phenomena, start and stop; Saved construction large solar accumulation of heat facility, reduced investment outlay.This kind mode has also made full use of advantages such as conventional thermal power generation low cost, power are big, has complementary advantages with solar energy, realizes solar energy and fossil energy complementary operation, for conventional thermoelectricity reducing energy consumption provides a new road.
Description of drawings
Fig. 1 is the solar energy assisted coal fired thermal power plant integrated backheating device schematic diagram.
Among the figure: 1-heater, 2-solar energy heating steam generator hydrophobic valve, 3-heater condensate valve, 4-upper level heater condensate inlet, 5-solar energy heating steam generator, 6-upper level heater water out, 7-solar energy heating steam generator steam (vapor) outlet valve, 8-next stage heater water inlet, 9-heater steam pumping valve, 10-steamer pusher side steam pumping mouth, dotted line is represented by the steam hydrophobic pipeline of heater 1 condensation
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
The steam that solar energy heating steam generator 5 produces in Fig. 1 is imported heaters 1 from its outlet through solar energy heating steam generator steam (vapor) outlet valve 7, by the hydrophobic solar energy heating steam generator hydrophobic valve 2 of the steam of heater 1 condensation by heater 1 bottom, be back to solar energy heating steam generator 5 hydrophobic inlets, finish once circulation.
In the embodiment shown in fig. 1, the trough type solar heat-collector of solar energy heating steam generator 5 for having bought on the market, the hot temperature of its maximum set can reach about 400 ℃, as the SGX-1 or the DS-1 of U.S. Solargenix company, the LS-1 of Luz company, LS-2 or LS-3.
The operation principle of present embodiment: the steam that produces when solar energy heating steam generator 5 enough replaces heater 1 drawing gas from steam turbine fully, when being used for heated feed water, close heater steam pumping valve 9 that is connected between heater 1 and the steamer pusher side steam pumping mouth 10 and the heater condensate valve 3 that is connected upper level heater condensate inlet 4, open solar energy heating steam generator steam (vapor) outlet valve 7, regulate solar energy heating steam generator 5 steam parameters that produce and (comprise flow, temperature, pressure etc.) basic identical with the original steam parameter of steamer pusher side steam pumping mouth 10.Entered solar energy heating steam generator 5 by the solar energy heating steam generator hydrophobic valve of opening 2 and continue to be heated generation steam, circulation repeatedly by the steam of heater 1 condensation is hydrophobic.When overcast and rainy, the sun provides energy shortage, and solar energy heating steam generator 5 generation steam do not reach and require parameter.Can regulate flow by the aperture that reduces solar energy heating steam generator steam (vapor) outlet valve 7 and solar energy heating steam generator hydrophobic valve 2, make the vapor (steam) temperature of solar energy heating steam generator 5, pressure reaches requirement numerical value, regulate heater steam pumping valve 9 that connects steamer pusher side steam pumping mouth 10 and the heater condensate valve 3 that is connected upper level heater condensate inlet 4 simultaneously, make the total steam flow of input heater 1 and reach requirement, thereby realize solar energy resources and conventional coal-fired complementary auxiliary operation by the hydrophobic flow that solar energy heating steam generator hydrophobic valve 2 returns solar energy heating steam generator 5.Owing to reduced extracted steam from turbine, steam turbine acting ability strengthens, and gross coal consumption rate will significantly descend.When evening or solar thermal collector failure and other reasons solar energy heating steam generator 5 can't produce steam, close solar energy heating steam generator steam (vapor) outlet valve 7, close solar energy heating steam generator hydrophobic valve 2 simultaneously, and open heater condensate valve 3 that connects upper level heater condensate inlet 4 and the heater steam pumping valve 9 that is connected steamer pusher side steam pumping mouth 10 and heater 1, then return to and transform preceding former thermal power generation operating mode.
Present embodiment is certain one-level regenerative apparatus of coal fired thermal power plant, can be used for the whole heat regenerative system of coal fired thermal power plant.
Claims (2)
1. solar energy assisted coal fired thermal power plant integrated backheating device, it is characterized in that: in the described solar energy assisted coal fired thermal power plant integrated backheating device, the steam (vapor) outlet of solar energy heating steam generator (5) is connected to the inlet of solar energy heating steam generator steam (vapor) outlet valve (7), the outlet of solar energy heating steam generator steam (vapor) outlet valve (7) is connected to the steam inlet of heater in the firepower electrical plant heat regenerative system (1), the hydrophobic outlet of steam of heater (1) is connected to the inlet of solar energy heating steam generator hydrophobic valve (2) and the inlet of heater condensate valve (3), the outlet of solar energy heating steam generator hydrophobic valve (2) is connected to the hydrophobic inlet of solar energy heating steam generator (5), and the outlet of heater condensate valve (3) is connected to upper level heater condensate inlet (4).
2. according to the described solar energy assisted coal fired thermal power plant integrated backheating device of claim 1, it is characterized in that: described solar energy heating steam generator (5) is a trough type solar heat-collector.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101042858A CN101261001A (en) | 2008-04-17 | 2008-04-17 | Solar energy assisted coal fired thermal power plant integrated backheating device |
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| CNA2008101042858A CN101261001A (en) | 2008-04-17 | 2008-04-17 | Solar energy assisted coal fired thermal power plant integrated backheating device |
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| CN101261001A true CN101261001A (en) | 2008-09-10 |
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| CNA2008101042858A Pending CN101261001A (en) | 2008-04-17 | 2008-04-17 | Solar energy assisted coal fired thermal power plant integrated backheating device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806497A (en) * | 2010-03-30 | 2010-08-18 | 东南大学 | Solar energy-based combined cycle energy multi-level utilization device |
| CN101846044A (en) * | 2010-04-16 | 2010-09-29 | 华中科技大学 | Solar heat collection, energy storage and back heating system applied to thermal generator set |
| CN101858320A (en) * | 2010-04-07 | 2010-10-13 | 河海大学 | Solar heating and generating system and method for biological sewage treatment |
| CN102405349A (en) * | 2009-04-18 | 2012-04-04 | 阿尔斯通技术有限公司 | Steam power plant having solar collectors |
| CN102878036A (en) * | 2012-09-10 | 2013-01-16 | 汪禹 | Solar energy-gas turbine combined cycle cogeneration system |
| CN103016075A (en) * | 2013-01-06 | 2013-04-03 | 华北电力大学（保定） | Hybrid power generation system capable of assisting fire coals through biomass |
| CN103216402A (en) * | 2012-01-18 | 2013-07-24 | 中国科学院工程热物理研究所 | Active adjusting and controlling system and method for water feeding-heating light-coal complementary power station under varied work condition |
-
2008
- 2008-04-17 CN CNA2008101042858A patent/CN101261001A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405349A (en) * | 2009-04-18 | 2012-04-04 | 阿尔斯通技术有限公司 | Steam power plant having solar collectors |
| CN102405349B (en) * | 2009-04-18 | 2015-11-25 | 阿尔斯通技术有限公司 | There is the steam power station of solar collector |
| US9745964B2 (en) | 2009-04-18 | 2017-08-29 | General Electric Technology Gmbh | Steam power plant having solar collectors |
| CN101806497A (en) * | 2010-03-30 | 2010-08-18 | 东南大学 | Solar energy-based combined cycle energy multi-level utilization device |
| CN101806497B (en) * | 2010-03-30 | 2011-08-03 | 东南大学 | Solar energy-based combined cycle energy multi-level utilization device |
| CN101858320A (en) * | 2010-04-07 | 2010-10-13 | 河海大学 | Solar heating and generating system and method for biological sewage treatment |
| CN101846044A (en) * | 2010-04-16 | 2010-09-29 | 华中科技大学 | Solar heat collection, energy storage and back heating system applied to thermal generator set |
| CN103216402A (en) * | 2012-01-18 | 2013-07-24 | 中国科学院工程热物理研究所 | Active adjusting and controlling system and method for water feeding-heating light-coal complementary power station under varied work condition |
| CN102878036A (en) * | 2012-09-10 | 2013-01-16 | 汪禹 | Solar energy-gas turbine combined cycle cogeneration system |
| CN103016075A (en) * | 2013-01-06 | 2013-04-03 | 华北电力大学（保定） | Hybrid power generation system capable of assisting fire coals through biomass |
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Open date: 20080910 |