CN101832538A - Method for generating power with solar energy by jointly operating fossil fuel boiler and newly-established solar energy boiler - Google Patents
Method for generating power with solar energy by jointly operating fossil fuel boiler and newly-established solar energy boiler Download PDFInfo
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- CN101832538A CN101832538A CN201010130187A CN201010130187A CN101832538A CN 101832538 A CN101832538 A CN 101832538A CN 201010130187 A CN201010130187 A CN 201010130187A CN 201010130187 A CN201010130187 A CN 201010130187A CN 101832538 A CN101832538 A CN 101832538A
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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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Abstract
The invention provides a novel method for generating power by combining solar energy production and steam power generation technology with rankine cycle which is used at present to generate power, aiming at increasing the power or reducing the consumption of the fossil fuel, alleviating the intermittence of most renewable energy technologies, keeping the schedulability of the renewable energy technologies and helping the renewable energy technologies to meet the requirements for the investment of the renewable energy on the large-scale fossil fuel power plant. The invention provides the method for generating power by jointly operating a high-temperature and high-pressure solar energy DC boiler and a subcritical or supercritical fossil fuel boiler and using the same steam turbine according to the prior slot-type or tower-type solar energy technology in view of the actual situation in China in an improved in-service power plant unit or a newly-established power plant. The solar energy boiler model is provided with an evaporating section of a solar energy collector which has a slot-type paraboloid, a steam overheating section of a tower-type solar energy collector and a reheating section of a tower-type solar energy collector and can generate the high-pressure overheated steam of 545 DEG C.
Description
Technical field
The present invention relates to a kind of solar DC boiler, thereby itself and traditional fossil-fuel boiler paired running are reached the purpose of saving fossil fuel.
Technical background
Strengthening the regenerative resource development and use, is to tackle the serious day by day energy and the only way of environmental problem, also is the only way that human society is realized sustainable development.In order to tackle climate change, the China Power system is about to bear to low-carbon economy and makes the transition.
China belongs to one of abundant country of solar energy resources, national total area 2/3 or more area year sunshine time greater than 2000 hours.
According to incompletely statistics, only during 1981-1991 is 10 years, more than 20 of the above solar heat power generation system of 500kW just set up in the whole world.Nowadays, in the technology that adopts the Rankine circulation, according to the height of heat-collecting temperature, solar heat power generation system roughly can be divided into slot type system, tower system and dish formula system three big fundamental types.
But the maximum deficiency of solar electrical energy generation is to move continuously, night or sunshine deficiency situation under with out of service, the present invention proposes the imagination that solar electrical energy generation and the generating of traditional fossil fuel are combined in order to remedy this deficiency.Not only reach the purpose of saving fossil fuel but also remedied the deficiency that solar electrical energy generation can not move continuously.
Summary of the invention
The present invention proposes the solar DC boiler model of hot arc again of the steam superheating section+tower heat collector of evaporator section+tower heat collector that parabolic flute profile solar thermal collector constitutes.And on this model based, employing solar DC boiler+HTHP, subcritical or overcritical fossil-fuel boiler paired running have been proposed, use the power generation mode of same steam turbine jointly.See Figure of abstract, each part description is as follows in the accompanying drawing: the SB solar boiler.S1, S2-is as the tower concentrated solar collector of solar boiler superheater and reheater heating surface, the bypass of S3-solar boiler one-level, S4-solar boiler steam-water separator, S5, the heat exchanger of S6-solar boiler evaporator section and economizer, S7-solar boiler water supply control valve, S8, S11-is as the parabola flute profile solar energy centralized collection device of solar boiler evaporating heating surface and economizer thermal source, S9, S10-solar collector heat storage medium circulating pump, S12-starts hydrophobic recirculation flow adjustable valve, S13-starts hydrophobic recirculation pump, the hydrophobic and separator water level control valve (removing condenser) of S14-.
FB fossil fuel conventional boiler.F1-superheater, F2-reheater, F3-evaporator section, F4-economizer, the F5-adjustment doors that feeds water
The conventional steam turbine of T.T1, T2, the high, normal, basic cylinder pressure of T3-steam turbine, T4-solar boiler inlet valve T5-steam turbine high pressure main stop valve, the bypass of T6-FB one-level, the bypass of T7-FB secondary, T8-, the T9-SB reheater is to the high bypass that adds, and the T10-SB reheater is to the bypass of oxygen-eliminating device, the T11-height adds, the T12-feed pump, the T13-oxygen-eliminating device, T14-is low to be added, the T15-condensate pump, the T16-condenser
Mix sun circulation and must comprise the transient problem analysis that whole system is deep, comprise solar energy vapour source.Last dynamic model will be an integrated system of having the ability to predict steam pressure and variations in temperature under stable and of short duration condition.Moving model and control strategy that the present invention proposes are as follows:
(a) fossil-fuel boiler and steam turbine are formed unit system, and by former unit operation, fossil-fuel boiler is connected by piping-main scheme with solar boiler after the solar boiler off-the-line, figure before the therrmodynamic system.Equipment and systematic name are seen explanation under the accompanying drawing.
(b) medium is vapour and water with system is the same usually in the pot of solar boiler.The evaporating heating surface of boiler and economizer add temperature solar gathering-device in the thermal recovery, device with the heating of heat transferring medium oil and heat exchange wherein with the steam medium heat exchange of Rankine cycle.Form steam water interface and enter steam-water separator.Steam-water separator is starting different with the DC operation stage but is not having difference with common direct current cooker.The steam of drawing from separator enters high temperature solar, and to collect centralised arrangement overheated, forms superheated steam steam supply turbine.
(c) boiler is established starting drive, adopts the underload starting drive of band circulating pump, and establishes a bypass of arriving condenser starts container in startup control system water level.
(d) solar boiler is with load control outlet temperature, and load is by the solar boiler winner gate control of feeding water, and required confluent of unit load or quantity of steam satisfy the unit load demand by the fossil-fuel boiler gate control of feeding water.And province's coal gas and evaporator section outlet temperature are undertaken by the focusing of regulating temperature solar concentrator in some.
(e) the concentrated speculum of solar boiler special arrangement tracking position of sun again is to obtain maximal efficiency.
The specific embodiment
Solar boiler capacity 100MW, combination on subcritical or HTHP unit in labour, but to select residual life suitable with the solar boiler life-span.
Design is produced with equipment, first each cauldron factory bid at home, and the boiler factory is from selecting with the affiliate temperature and high temperature heat collector technology and 10% product in the introduction, all the other production domesticization under technology suppliers instruct in the world.Introduce the basic designing technique of core, domestic designing institute bears other design objectives.
Management style: after power plant transforms and finishes, hand over former power plant to move in lease solar boiler mode.Solar boiler maintenance and running cost are retained by power plant, are responsible for the operation and the maintenance of solar boiler.Investment forms fixed assets and returns the investor to own.Can regard power plant lease solar boiler as, lease expenses increases operations staff's wage and welfare newly for the rate for incorporation into the power network income-solar power plant of the former coal fired power generation amount of solar electrical energy generation amount income-maintenance cost-be equivalent to.
Scheduling mode: start solar boiler every day during The sun came up, start and by bypass low-pressure steam is led to oxygen-eliminating device early stage, when pressure raises paramount when adding vapour source pressure gradually, the paramount origin that adds is cut in bypass automatically, after solar boiler master vapour parameter is qualified, with former fossil-fuel boiler and vapour, realize solar boiler and former fossil-fuel boiler paired running.This moment, scheduling mode was that solar boiler can send out what how much are used according to weather, weather and the moment.
Claims (3)
1. the solar DC boiler model of the hot arc again of the steam superheating section+tower heat collector of evaporator section+tower heat collector that parabolic flute profile solar thermal collector constitutes.
2. on basis, adopt solar DC boiler+HTHP, subcritical or overcritical fossil-fuel boiler paired running, use the power generation mode of same steam turbine jointly based on the solar DC boiler model under the claim 1.
3. fossil-fuel boiler and newly-built solar boiler paired running model and control strategy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010130187A CN101832538A (en) | 2010-06-24 | 2010-06-24 | Method for generating power with solar energy by jointly operating fossil fuel boiler and newly-established solar energy boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010130187A CN101832538A (en) | 2010-06-24 | 2010-06-24 | Method for generating power with solar energy by jointly operating fossil fuel boiler and newly-established solar energy boiler |
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| CN101832538A true CN101832538A (en) | 2010-09-15 |
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| CN201010130187A Pending CN101832538A (en) | 2010-06-24 | 2010-06-24 | Method for generating power with solar energy by jointly operating fossil fuel boiler and newly-established solar energy boiler |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003696A (en) * | 2010-11-17 | 2011-04-06 | 东方锅炉（集团）股份有限公司 | Hierarchical cavity type solar heat absorber and heat exchange system |
| CN106567811A (en) * | 2014-09-24 | 2017-04-19 | 国电龙源电力技术工程有限责任公司 | Power generation system comprising steam heat accumulator |
| JP7201954B1 (en) * | 2022-08-29 | 2023-01-11 | 住友ゴム工業株式会社 | Steam supply system and tire curing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210745A (en) * | 2006-12-25 | 2008-07-02 | 张世严 | Solar energy heat electricity generation and heat supplying device |
| CN101270675A (en) * | 2008-04-24 | 2008-09-24 | 华北电力大学 | Solar energy and coal-burning unit combined thermal power generation system |
| CN201486603U (en) * | 2009-08-28 | 2010-05-26 | 郭清温 | Solar and biomass combination generator |
-
2010
- 2010-06-24 CN CN201010130187A patent/CN101832538A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210745A (en) * | 2006-12-25 | 2008-07-02 | 张世严 | Solar energy heat electricity generation and heat supplying device |
| CN101270675A (en) * | 2008-04-24 | 2008-09-24 | 华北电力大学 | Solar energy and coal-burning unit combined thermal power generation system |
| CN201486603U (en) * | 2009-08-28 | 2010-05-26 | 郭清温 | Solar and biomass combination generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003696A (en) * | 2010-11-17 | 2011-04-06 | 东方锅炉（集团）股份有限公司 | Hierarchical cavity type solar heat absorber and heat exchange system |
| CN106567811A (en) * | 2014-09-24 | 2017-04-19 | 国电龙源电力技术工程有限责任公司 | Power generation system comprising steam heat accumulator |
| JP7201954B1 (en) * | 2022-08-29 | 2023-01-11 | 住友ゴム工業株式会社 | Steam supply system and tire curing system |
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Application publication date: 20100915 |