EP1518040A1 - Centrale a vapeur - Google Patents

Centrale a vapeur

Info

Publication number
EP1518040A1
EP1518040A1 EP03761451A EP03761451A EP1518040A1 EP 1518040 A1 EP1518040 A1 EP 1518040A1 EP 03761451 A EP03761451 A EP 03761451A EP 03761451 A EP03761451 A EP 03761451A EP 1518040 A1 EP1518040 A1 EP 1518040A1
Authority
EP
European Patent Office
Prior art keywords
steam
turbine
power plant
combustion
combustion chamber
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.)
Withdrawn
Application number
EP03761451A
Other languages
German (de)
English (en)
Inventor
Georg Haberberger
Christoph Kail
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
Original Assignee
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
Priority to EP03761451A priority Critical patent/EP1518040A1/fr
Publication of EP1518040A1 publication Critical patent/EP1518040A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a steam power plant with at least one steam turbine and a steam generator.
  • operating steam for a steam turbine is usually generated in a steam generator, the energy contained in a hot gas being delivered to one or more heat exchangers which are fed with water, so that operating steam can be generated by heating this water or which is fed with steam are, so that an overheating of the steam can be achieved by means of a last-mentioned heat exchanger;
  • Such overheating takes place in known steam turbines, for example between a high pressure stage and a medium pressure stage of the steam turbine, the steam leaving the high pressure stage being overheated by means of an intermediate superheater heating surface arranged in the steam generator and being fed to the medium pressure stage.
  • Such intermediate superheating of the steam contributes, for example, to a higher efficiency of the steam turbine.
  • the supply of thermal energy for generating and / or reheating steam takes place by means of heat exchanger surfaces which are arranged in the steam generator and come into contact with a hot gas carried in the steam generator.
  • the heated heat exchanger surfaces in turn give off their thermal energy to water and / or steam which are guided within the body formed by a heat exchanger surface.
  • the heating therefore takes place by means of heat transfer from the hot gas to the heat exchanger surface and from the heat exchanger surface to the medium to be heated.
  • the energy of a hot gas is transferred to the medium to be heated by means of a material of the heat exchanger surface heated by the hot gas, the amount of energy that can be transferred to the medium to be heated, for example water and / or steam, is limited by the Material properties of the heat exchanger surface.
  • the heat transfer from hot gas to the medium to be heated is delayed, essentially due to the heating-up time required for the heat exchanger surface.
  • the invention is therefore based on the object of specifying a steam power plant with at least one steam turbine and a steam generator which can be used flexibly and which overcomes the disadvantages mentioned in the prior art.
  • a steam power plant comprising at least one steam turbine and a steam generator, in which a firing device is arranged in the direction of the steam flow after the steam generator and before the steam turbine and / or after a first turbine stage and before a second turbine stage of the steam turbine and the steam flow in a combustion chamber of the firing device can be heated by mixing with a hot gas that can be generated in the combustion chamber.
  • the invention is based on the consideration that the heat transfer from a hot gas to a medium to be heated dium is less limited compared to the prior art if the energy transfer to the medium to be heated does without the use of a heat exchanger surface.
  • This internal additional firing according to the invention can be used in the steam flow direction after the steam generator and before the steam turbine, i.e. already for overheating fresh steam, or also for overheating steam, which already releases part of its energy in a turbine stage and, after overheating according to the invention, a further one Turbine stage is supplied.
  • Hydrogen and / or a hydrocarbon, in particular methane, can advantageously be supplied to the firing device as fuel.
  • the main advantage of using hydrogen as a fuel is that if the hydrogen is produced from a hydrocarbon, as is often the case by reforming or gasifying, carbon dioxide is retained during the production of the hydrogen when reforming or gasifying a hydrocarbon with comparatively little energy expenditure can be avoided and so the formation of an acidic steam mixture within the steam turbine and / or other components of the steam power plant is avoided from the outset.
  • the firing device can advantageously be supplied with an oxygen-containing gas, in particular pure oxygen and / or air, in order to generate a combustion atmosphere.
  • This embodiment of the invention takes into account the requirement that combustion of a fuel is only possible in a suitable combustion atmosphere.
  • a particularly efficient combustion is possible by supplying pure oxygen, since compared to air this contains no further components which are more of a hindrance to the combustion and which may would have to be separated before the combustion, for example in an air separation device, in order to create a suitable combustion atmosphere.
  • combustion products obtained can be removed from the steam flow by means of a condenser connected downstream of the steam turbine.
  • combustion products are created, which are mostly to be discharged, since they can be deposited in the combustion chamber or other components, especially after a long period of operation, and restrict their function.
  • the internal additional firing realized by means of the firing device of a steam power plant according to the invention can be made available very quickly during the operation of the steam turbine. All that is required is the ignition of fuel introduced into the combustion chamber; in particular, the heating-up times of known heat exchanger surfaces are eliminated.
  • a steam power plant according to the invention has the advantage that combustion products and / or exhaust gas do not necessarily have to be removed from the combustion chamber by means of a separate discharge device, since they can be carried along by the steam flow and can be coupled out at another point in the steam circuit, for example the condenser mentioned ,
  • the invention enables a higher steam temperature to be achieved without having to change the design of the steam generator.
  • a steam power plant according to the invention can in particular also be used to provide energy during peak load times or to support the network frequency of an electrical power supply network; an inventive steam Kraftwerk offers the possibility of fast power control and can be used very flexibly.
  • FIG an inventive steam power plant.
  • a steam power plant 1 which comprises a steam turbine 3 coupled to a generator 21 and a steam generator 5.
  • the steam turbine 3 is constructed in three stages and has a first turbine stage 11, a second turbine stage 13 and a third turbine stage 15, which are designed as a high pressure stage, medium pressure stage or low pressure stage.
  • the steam generator 5 is a boiler fired by coal 27, to which combustion air 29 is fed in order to maintain the coal furnace.
  • Heating surface 37 and an intermediate superheater heating surface 35 are arranged in a region of lower temperature.
  • the heating surface 37 serves to heat feed water 24 from a feed water tank 23 in the steam generator 5 in such a way that operating steam can be fed to the first turbine stage 11.
  • the steam is reheated by means of the reheater heating surface 35.
  • a steam flow 17 emerges from the reheater heating surface 35 in the direction 9 and is fed to a firing device 7.
  • the steam flow 17 is in a ner combustion chamber 19 is heated by means of a fuel 33 and addition of oxygen 31, the steam stream 17 in the combustion chamber 19 mixing with the hot gas which arises in the combustion chamber 19 during the combustion of the fuel 33.
  • the heat transfer from the hot gas to the steam flow 17 thus takes place directly by mixing, without a material, for example a heat exchanger surface, being provided for the heat transfer.
  • oxygen 31 it is also possible to use air to generate a suitable combustion atmosphere, the air possibly being split into oxygen and residual gas by means of an air separation device before being introduced into the combustion chamber.
  • a hydrocarbon in particular methane, or hydrogen can be used as fuel 33.
  • the steam stream 17 heated by means of the firing device 7 is fed to the second turbine stage 13, where it converts at least part of the energy it contains into mechanical work.
  • the steam, which has been expanded further, leaves the second turbine stage 13 and is fed to the third turbine stage 15, where the energy still present in the steam is converted as well as possible into mechanical energy.
  • the expanded steam leaves the third turbine stage 15 as a water-steam mixture and is fed to a condenser 25, where the steam portion still present is condensed to water.
  • This water which accumulates in the condenser 25, is fed as condensate 26 to the feed water tank 23.
  • Combustion products 39 which arise during combustion in the combustion chamber 19 of the firing device 7, can be removed from the condenser 25.
  • the combustion products 39 comprise water and carbon dioxide.
  • This water-carbon dioxide mixture is carried along by the steam stream 17 and can be removed from the condenser 25, since when the water-carbon dioxide mixture cools, the water portion largely condenses and almost pure gaseous carbon dioxide remains as gas, which is then transported away and can be stored, for example.
  • water as a combustion product does not usually have to be removed, but can be supplied to the feed water tank 23 as part of the condensate 26.

Landscapes

  • 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)

Abstract

L'invention concerne une centrale à vapeur (1) comprenant au moins une turbine à vapeur (3) et un générateur de vapeur (5). L'invention se caractérise en ce qu'un dispositif de mise à feu (7) est disposé en aval du générateur de vapeur (5) et en amont de la turbine à vapeur (3) et/ou en aval d'un premier étage (11) et en amont d'un deuxième étage (13) de la turbine à vapeur (3), dans le sens (9) du flux de vapeur (17), et en ce que ledit flux de vapeur (17) peut être chauffé dans une chambre de combustion (19) du dispositif de mise à feu (7) par mélange avec un gaz de chauffage pouvant être produit dans la chambre de combustion (19).
EP03761451A 2002-06-28 2003-05-15 Centrale a vapeur Withdrawn EP1518040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03761451A EP1518040A1 (fr) 2002-06-28 2003-05-15 Centrale a vapeur

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02014453A EP1375827A1 (fr) 2002-06-28 2002-06-28 Centrale à vapeur
EP02014453 2002-06-28
PCT/EP2003/005123 WO2004003348A1 (fr) 2002-06-28 2003-05-15 Centrale a vapeur
EP03761451A EP1518040A1 (fr) 2002-06-28 2003-05-15 Centrale a vapeur

Publications (1)

Publication Number Publication Date
EP1518040A1 true EP1518040A1 (fr) 2005-03-30

Family

ID=29716870

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02014453A Withdrawn EP1375827A1 (fr) 2002-06-28 2002-06-28 Centrale à vapeur
EP03761451A Withdrawn EP1518040A1 (fr) 2002-06-28 2003-05-15 Centrale a vapeur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02014453A Withdrawn EP1375827A1 (fr) 2002-06-28 2002-06-28 Centrale à vapeur

Country Status (7)

Country Link
US (1) US7316105B2 (fr)
EP (2) EP1375827A1 (fr)
JP (1) JP2006514718A (fr)
CN (1) CN1671949A (fr)
AU (1) AU2003232782A1 (fr)
RU (1) RU2005102100A (fr)
WO (1) WO2004003348A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4521202B2 (ja) * 2004-02-24 2010-08-11 株式会社東芝 蒸気タービン発電プラント
WO2008014568A1 (fr) * 2006-08-03 2008-02-07 Carnegie Corporation Ltd Turbine à vapeur
DE102011107541B4 (de) * 2011-07-11 2013-05-08 Bruno Rettich Wirkungsgradsteigerung einer stationären oder mobilen Verbrennungsarbeitsmaschine durch einen geschlossenen Verbrennungsprozess
DE102011121341A1 (de) * 2011-12-19 2013-06-20 RERUM COGNITIO Institut GmbH Dampfkraftprozess mit schnellaktivierbarer Leistungsreserve für die Elektroenergieerzeugung im Kreisprozess
US20170167786A1 (en) * 2015-12-14 2017-06-15 Fritz Pierre, JR. Pre-Cooling of Natural Gas by High Pressure Compression and Expansion
EP4113008A1 (fr) 2021-07-01 2023-01-04 Siemens Energy Global GmbH & Co. KG Système de chambre de combustion alimentée en hydrogène, procédé et installation
WO2023096643A1 (fr) * 2021-11-24 2023-06-01 Ohio State Innovation Foundation Systèmes et procédés de récupération d'énergie d'oxydo-réduction
US11988114B2 (en) 2022-04-21 2024-05-21 Mitsubishi Power Americas, Inc. H2 boiler for steam system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678531A (en) * 1951-02-21 1954-05-18 Chemical Foundation Inc Gas turbine process with addition of steam
US2832194A (en) * 1952-11-25 1958-04-29 Riley Stoker Corp Multiple expansion power plant using steam and mixture of steam and combustion products
US4148185A (en) * 1977-08-15 1979-04-10 Westinghouse Electric Corp. Double reheat hydrogen/oxygen combustion turbine system
JPH10505145A (ja) * 1994-08-25 1998-05-19 クリーン エナジー システムズ， インコーポレイテッド 汚染を減少した動力発生システム及びそのためのガス発生機
JP2880925B2 (ja) * 1995-02-20 1999-04-12 株式会社東芝 水素燃焼ガスタービンプラント
US5953900A (en) * 1996-09-19 1999-09-21 Siemens Westinghouse Power Corporation Closed loop steam cooled steam turbine
US5775091A (en) * 1996-10-21 1998-07-07 Westinghouse Electric Corporation Hydrogen fueled power plant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004003348A1 *

Also Published As

Publication number Publication date
WO2004003348A1 (fr) 2004-01-08
AU2003232782A1 (en) 2004-01-19
CN1671949A (zh) 2005-09-21
EP1375827A1 (fr) 2004-01-02
JP2006514718A (ja) 2006-05-11
RU2005102100A (ru) 2005-10-27
US7316105B2 (en) 2008-01-08
US20060021322A1 (en) 2006-02-02

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