CN1842638A - Steam power plant - Google Patents

Steam power plant Download PDF

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Publication number
CN1842638A
CN1842638A CNA2004800246472A CN200480024647A CN1842638A CN 1842638 A CN1842638 A CN 1842638A CN A2004800246472 A CNA2004800246472 A CN A2004800246472A CN 200480024647 A CN200480024647 A CN 200480024647A CN 1842638 A CN1842638 A CN 1842638A
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CN
China
Prior art keywords
steam
firing chamber
turbine
power station
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2004800246472A
Other languages
Chinese (zh)
Inventor
乔格·哈伯伯格
克里斯托弗·凯尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of CN1842638A publication Critical patent/CN1842638A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/005—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for the working fluid being steam, created by combustion of hydrogen with oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/06—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-inlet-pressure type
    • 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
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Air Supply (AREA)

Abstract

An inventive steam power plant (1) comprises at least one steam turbine (2) and a steam generator (5), whereby a combustion chamber (19), in the direction (9) of the flow of steam (17), is mounted after a first turbine stage (11) and before a second turbine stage (13) of the steam turbine (3), and the flow of steam (9) inside a combustion chamber (19) can be heated by mixing it with a hot gas that can be produced inside said combustion chamber (19).

Description

Steam power station
The present invention relates to a kind of steam power station that has the steam generator of at least one steam turbine and an ignition.
In known steam power station, the common steam generator of fire burns on one point of working steam that is used for steam turbine produces, wherein, the heat that comprises in hot combustion gas (hei β gas) is sent to one or more heat exchangers, if add water to these heat exchangers, then can produce working steam, perhaps, then can reach overheated described steam by means of a heat exchanger of mentioning later to these heat exchanger input steam by adding hot water; A kind of so overheatedly in known steam turbine, for example between the high pressure stage of steam turbine and medium pressure grade, carry out, wherein, the steam that leaves high pressure stage is placed in intermediate superheater heating surface in the described steam generator by overheated and be sent to described medium pressure grade by means of one.
This intermediate superheating to steam for example helps to make steam turbine to reach higher efficient.
In known steam power station, import heat energy, so that produce steam and/or be used for intermediate superheating steam by means of the heat exchanger face, these heat exchanger faces are placed in the steam generator of described ignition, in the steam boiler that for example be placed in a burning coal or oil or biomaterial or be referred to as mineral fuel or the nuclear energy burning and with the hot contacts fuel gas of in steam generator, guiding.Heated heat exchanger face is given water and/or the steam that circulates with its thermal energy transfer again in the heat exchanger that is made of the heat exchanger face.That is to say, this heating be by means of with the heat transfer of hot combustion gas to the heat exchanger face and be delivered to the medium that will heat from the heat exchanger face and realize.
Because for the heat exchanger in the steam generator that is encased in known steam generating equipment well known in the prior art, be by means of the material of the heat exchanger face by hot combustion gas heating with the thermal energy transfer of hot combustion gas to described medium to be heated, therefore, the thermal energy that can be delivered to described medium, for example water and/or steam to be heated is subjected to the restriction of the material behavior of described heat exchanger face.
Therefore in known steam generating equipment, to limit the vapor (steam) temperature that is allowed, because the heat exchanger face of transferring heat energy can not be heated to high temperature arbitrarily based on its material behavior and the relevant therewith thermal loading limit of being born.
In addition, the heat of hot combustion gas suffers a delay to the transmission of described medium to be heated, and this is mainly caused by the required heating time of warming of described heat exchanger face.
Therefore, technical problem to be solved by this invention is, a kind of steam power station that has the steam generator of at least one steam turbine and an ignition is provided, the shortcoming that this steam power station can use neatly and especially can overcome in the prior art to be mentioned.
Above-mentioned technical problem comprises that by a kind of the steam power station of the steam generator of at least one steam turbine and an ignition is solved, according to the present invention, along the direction of vapor stream after one first turbine stage of described steam turbine and settling a firing chamber and the described vapor stream can be in this firing chamber before one second turbine stage by being heated with a kind of hot combustion gas mixing that can in this firing chamber, produce.
At this, the present invention is based on following thought, that is,, then compared with prior art less be restricted from the thermal energy transfer of a kind of hot combustion gas to described medium to be heated if abandon adopting a heat exchanger towards a kind of medium transferring heat energy to be heated.
This reaches by directly importing to described vapor stream to be heated in one firing chamber and directly mixing with described hot combustion gas there in the present invention.
Thisly can just can be used to after steam generator and before the steam turbine that overheated fresh steam or overheated those have passed to its portion of energy a turbine stage and through according to the steam of overheated back of the present invention along the vapor stream direction to another turbine stage transmission according to inner auxiliary combustion of the present invention.
Compared with prior art, by means of reaching higher vapor (steam) temperature according to steam power station of the present invention, high vapor (steam) temperature helps steam power station to reach higher efficient.
In according to steam power station of the present invention, if turn off the described auxiliary burner of realizing by means of the firing chamber or when it lost efficacy, then this steam power station still can continue to move as a known steam power station.
Can advantageously carry hydrogen and/or a kind of hydrocarbon, especially methane to act as a fuel to described firing chamber.
Described fuel especially comprises carbon and/or hydrogen.
Adopt the hydrogen advantage that at first has that acts as a fuel to be, if from a kind of hydrocarbon, make hydrogen by fuel reforming or vaporization often resembling, the then subsidiary carbon dioxide that generates has been avoided at the inner vapour mixture that forms acidity of the miscellaneous part of steam turbine and/or steam power station thus from the beginning as far back as just being suppressed with less relatively energy consumption when hydrocarbon mixture being reformed transformation or vaporization during the manufacturing hydrogen.
In order to realize that good especially burning is arranged in the firing chamber, can advantageously carry a kind of oxygen containing gas, especially purity oxygen and/or air, to form a kind of combustion atmosphere to described ignition device.
This mode of execution of the present invention is considered such requirement,, can only realize a kind of fuel of burning in a kind of suitable combustion atmosphere that is.Can reach especially effectively burning by means of the input purity oxygen, because purity oxygen is compared the composition of the overslaugh burning that does not contain other with air, sometimes before burning, must for example in an air-separating plant, these component separating be come out, so that create a kind of suitable combustion atmosphere.
In another preferred embodiment of the present invention, can be connected described steam turbine condenser afterwards by means of one and from described vapor stream, separate the products of combustion that taking-up is produced.
These products of combustion all produce the products of combustion that to discharge mostly in all actually combustion processes, because especially may be deposited in firing chamber or the miscellaneous part and limit their function after through long working time.
If the hydrocarbon that for example burning acts as a fuel in a kind of atmosphere of purity oxygen in according to steam power station of the present invention, then products of combustion comprises water and carbon dioxide at least.These products of combustion are carried and are directed to described condenser together by described vapor stream.Great majority itself just are provided with a condenser in known steam power station, and therefore the independent condenser that another is suitable for obtaining described products of combustion might not be set in the present invention.
When the steam of the products of combustion of the described form of mixtures that contains water and carbon dioxide of cooling, water constituent is condensed basically and is remaining almost is the carbon dioxide of pure gas form, and carbon dioxide can obtain from condenser and for example store.
Such as already mentioned, when adopting the hydrogen of making by means of the hydrocarbon of reforming or vaporize to act as a fuel, the subsidiary carbon dioxide that generates just was extracted out before being input to fuel in the firing chamber, therefore in fact can not produce carbon dioxide as products of combustion in this case when burning.
The inside auxiliary burner of realizing by means of the firing chamber of steam power station of the present invention can be provided application soon at the steam turbine run duration.For this reason, only need light the fuel that is input in the firing chamber gets final product; This has especially cancelled the preheat time of known heat exchanger face.
In addition, one is according to the advantage that steam power station of the present invention had, might not products of combustion and/or waste gas be discharged from the firing chamber by means of an independent material discharge device, because products of combustion can be carried by vapor stream and be separated at the condenser place as mentioned in other places, the example of vapor recycle.In addition, can reach a higher vapor (steam) temperature by the present invention, and needn't change design of steam generator.
Especially can adopt one electric energy to be provided or to be used to support the mains frequency of a power supply network in the peak of power consumption time according to steam power station of the present invention; One provides the method that a kind of fast power regulates and can use neatly by the utmost point according to steam power station of the present invention.
Elaborate one embodiment of the present invention below.
Accompanying drawing 1 expression is a kind of according to steam power station of the present invention.
Shown in the drawings a kind of according to steam power station of the present invention, it comprises the steam turbine 3 that is connected with a generator 21 and the steam generator 5 of an ignition.
Steam turbine 3 is three grades of formula structures and has one first turbine stage 11, second turbine stage 13 and one the 3rd turbine stage 15 that they are designed to high pressure stage, medium pressure grade and low pressure stage respectively.
In mode of execution shown in the drawings, steam generator 5 relates to a kind of boiler of burning coal 27, carries combustion air 29 in order to keep coal burning to this boiler.
In steam generator 5, in its hot junction portion zone, settle a heating surface 37 and in the zone of a lower temperature, settle an intermediate superheater heating surface 35.
Described heating surface 37 is used at the supply water 24 of steam generator 5 such heating from a water supply container 23, that is, described first turbine stage 11 can lead working steam.
In first turbine stage 11 after the demi-inflation acting, steam by means of described intermediate superheater heating surface 35 by intermediate superheating.Vapor stream 17 is directed to an ignition device along direction 9 after middle superheater heating surface 35 comes out.At this, vapor stream 17 in a firing chamber 19 by means of a kind of fuel 33 and add oxygen 31 and be heated, at this moment, vapor stream 17 in firing chamber 19 with the described hot combustion gas mixing that in this firing chamber 19, produces during combustion fuel 33.
Therefore, 17 heat transmission is directly finished by mixing from hot combustion gas to vapor stream, for transmission of heat does not need to adopt a kind of material, a kind of heat exchanger face for example.
Replace oxygen 31, also can adopt air to form a kind of suitable combustion atmosphere, wherein, before air is imported to the firing chamber, be separated into oxygen and residual gas in case of necessity by means of an air-separating plant.
For example can adopt hydrocarbon, especially methane or hydrogen to act as a fuel 33.
Will be by means of described second turbine stage 13 of vapor stream 17 guiding of firing chamber 19 heating, the energy that contains to its inside of major general of vapor stream 17 partly is converted into mechanical work there.So the steam after the continuation expansion acting leaves this second turbine stage 13 subsequently and is directed to described the 3rd turbine stage 15, and the energy that will also retain in steam is converted into mechanical energy as far as possible well there.
The steam of described expansion working leaves described the 3rd turbine stage 15 and is directed to a condenser 25 with water-steam mixture form, and the described there steam composition that also exists is condensed into water.
This in condenser 25 collected water be transported to described water supply container 23 as condensed fluid 26.
Can from condenser 25, extract the products of combustion 39 that is produced when in firing chamber 19, burning.
Because the burning in firing chamber 19 occurs in vapor stream 17 inside, therefore, products of combustion 39 is brought in the vapor recycle by vapor stream 17, and extracts from condenser 25 subsequently according to embodiments of the present invention.
33 with oxygen 31 burnings if for example a kind of hydrocarbon is acted as a fuel, and then described products of combustion 39 comprises water and carbon dioxide.The mixture of this water-carbon dioxide is carried together by described vapor stream 17 and can extract from condenser 25, this is because when the mixture of water-carbon dioxide is cooled, water constituent wherein be condensed to a great extent and almost the carbon dioxide of scrubbed gas form retain as gas, next just carbon dioxide can be discharged and for example be stored.

Claims (4)

1. a steam power station (1), it comprises the steam generator (5) of at least one steam turbine (3) and an ignition, it is characterized by: one first turbine stage (11) that a firing chamber (7) are placed in described steam turbine (3) along the direction (9) of vapor stream (17) afterwards and at one second turbine stage (13) before, and described vapor stream (17) can be by being heated with a kind of hot combustion gas mixing that can produce in this firing chamber (19) in this firing chamber (19).
2. according to the described steam power station of claim 1 (1), it is characterized by: can carry hydrogen and/or a kind of hydrocarbon, especially methane act as a fuel (33) to described ignition device (7).
3. according to claim 1 or 2 described steam power stations (1), it is characterized by:, can carry a kind of oxygen containing gas, especially purity oxygen (31) and/or air to described ignition device (7) in order in described firing chamber (19), to form a kind of combustion atmosphere.
4. according to each described steam power station (1) in the claim 1 to 3, it is characterized by: be connected described steam turbine (3) condenser (25) afterwards by means of one and from described vapor stream (9), obtain the products of combustion (39) that is produced.
CNA2004800246472A 2003-08-27 2004-07-26 Steam power plant Pending CN1842638A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20313279.3 2003-08-27
DE20313279U DE20313279U1 (en) 2003-08-27 2003-08-27 Steam power plant

Publications (1)

Publication Number Publication Date
CN1842638A true CN1842638A (en) 2006-10-04

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CNA2004800246472A Pending CN1842638A (en) 2003-08-27 2004-07-26 Steam power plant

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US (1) US20060266040A1 (en)
EP (1) EP1658418A1 (en)
JP (1) JP2007503544A (en)
KR (1) KR20060069852A (en)
CN (1) CN1842638A (en)
DE (1) DE20313279U1 (en)
EG (1) EG24289A (en)
IL (1) IL173778A0 (en)
RS (1) RS51511B (en)
WO (1) WO2005021935A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN104061028A (en) * 2014-06-24 2014-09-24 华北电力大学 Double-reheat combined cycle power generation system and method combining oxyhydrogen and pulverized coal combustion

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JP5075900B2 (en) * 2009-09-30 2012-11-21 株式会社日立製作所 Hydrogen-containing fuel compatible combustor and its low NOx operation method
DE102012012683A1 (en) * 2012-06-27 2014-01-02 RERUM COGNITIO Institut GmbH Method for electric power generation in cyclic process in two-stage combined gas and steam turbine process, involves obtaining high temperatures with positive effect of efficiency in low pressures upto material limit
JP6541050B2 (en) * 2014-04-28 2019-07-10 日本ファーネス株式会社 High temperature oxygen combustion apparatus and high temperature oxygen combustion method
ES2980511T3 (en) * 2020-01-29 2024-10-01 Siemens Energy Global Gmbh & Co Kg Plant with additional module
US11988114B2 (en) 2022-04-21 2024-05-21 Mitsubishi Power Americas, Inc. H2 boiler for steam system
JP2024027572A (en) * 2022-08-18 2024-03-01 株式会社東芝 Combined cycle power generation facility

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061028A (en) * 2014-06-24 2014-09-24 华北电力大学 Double-reheat combined cycle power generation system and method combining oxyhydrogen and pulverized coal combustion
CN104061028B (en) * 2014-06-24 2016-02-24 华北电力大学 The double reheat association circulating power generation system that hydrogen-oxygen is combined with coal dust firing and method

Also Published As

Publication number Publication date
RS20060127A (en) 2007-12-31
US20060266040A1 (en) 2006-11-30
JP2007503544A (en) 2007-02-22
EG24289A (en) 2009-01-08
WO2005021935A1 (en) 2005-03-10
RS51511B (en) 2011-06-30
DE20313279U1 (en) 2003-10-16
KR20060069852A (en) 2006-06-22
EP1658418A1 (en) 2006-05-24
IL173778A0 (en) 2006-07-05

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Application publication date: 20061004