US20060266040A1 - Steam power plant - Google Patents

Steam power plant Download PDF

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Publication number
US20060266040A1
US20060266040A1 US10/569,564 US56956406A US2006266040A1 US 20060266040 A1 US20060266040 A1 US 20060266040A1 US 56956406 A US56956406 A US 56956406A US 2006266040 A1 US2006266040 A1 US 2006266040A1
Authority
US
United States
Prior art keywords
steam
power plant
combustion chamber
turbine
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.)
Abandoned
Application number
US10/569,564
Other languages
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
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HABERBERGER, GEORG, KAIL, CHRISTOPH
Publication of US20060266040A1 publication Critical patent/US20060266040A1/en
Abandoned 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

Definitions

  • the invention relates to a steam power plant with at least one steam turbine and a fired steam generator.
  • operating steam for a steam turbine is generally generated in a fired steam generator, with the energy contained in a hot gas being transferred to one or more heat exchangers, which are supplied with water, such that operating steam can be generated by heating this water, or which are supplied with steam such that superheating of the steam can be achieved by means of a last-mentioned heat exchanger; such superheating takes place in known steam turbines for example between a high-pressure stage and a medium-pressure stage of the steam turbine, with the steam leaving the high-pressure stage being superheated by means of an intermediate superheating heating surface disposed in the steam generator and being supplied to the medium-pressure stage.
  • Such intermediate superheating of the steam for example contributes to the greater efficiency of the steam turbine.
  • heat exchanger surfaces which are disposed in the fired generator, for example a coal, oil or biomass-fired or generally fossil or nuclear-fired steam boiler and come into contact with a hot gas supplied in the steam generator.
  • the heated heat exchanger surfaces in turn transfer their thermal energy to water and/or steam, which is/are supplied inside the element formed by a heat exchanger surface. Heating therefore takes place by means of a 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 from 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 quantity of energy that can be transferred to the medium to be heated, for example water and/or steam, is limited by the material characteristics of the heat exchanger surface.
  • the thermal transfer of hot gas to the medium to be heated is also subject to a delay, essentially due to the time required to heat up the heat exchanger surface.
  • the object of the invention is therefore to specify a steam power plant with at least one steam turbine and a steam generator, which can be used in a flexible manner and in particular overcomes the disadvantages of the prior art as mentioned above.
  • a steam power plant comprising at least one steam turbine and a fired steam generator, whereby a combustion chamber is disposed after a first turbine stage and before a second turbine stage of the steam turbine in the direction of the flow of steam and the flow of steam in the combustion chamber can be heated by mixing it with a hot gas that can be produced in said combustion chamber.
  • the invention is thereby based on the consideration that the thermal transfer of a hot gas to a medium to be heated is subject to fewer limitations compared with the prior art, if the energy transfer to the medium to be heated does not use a heat exchanger surface.
  • This claimed internal additional firing system can be used after the steam generator and before the steam turbine in the direction of the flow of steam, in other words to superheat live steam, or even to superheat steam which has already transferred some of its energy in a turbine stage and is supplied to a further turbine stage after a claimed superheating process.
  • the steam power plant can continue to operate in the manner of a known steam power plant.
  • Hydrogen and/or a hydrocarbon, in particular methane, can advantageously be supplied to the combustion chamber as fuel.
  • the fuel comprises carbon and/or hydrogen.
  • the use of hydrogen as fuel primarily has the advantage that—if the hydrogen is produced as is often standard practice by reforming or gasification from a hydrocarbon—any carbon dioxide occurring can be retained during production of the hydrogen in the process of reforming or gasifying a hydrocarbon, with a comparatively low energy outlay, thus preventing the formation of an acid steam mixture inside the steam turbine and/or other components of the steam power plant from the outset.
  • a gas containing oxygen in particular pure oxygen and/or air, can advantageously be supplied to the firing facility to produce a combustion atmosphere.
  • This embodiment of the invention takes into account the requirement that fuel combustion is only possible in a suitable combustion atmosphere.
  • Particularly efficient combustion can be achieved by supplying pure oxygen, as compared with air this contains no components that might tend to hinder combustion, which would for example have to be separated before combustion in an air separator, to create a suitable combustion atmosphere.
  • combustion products that occur can be removed from the flow of steam by means of a condenser connected downstream from the steam turbine.
  • Combustion products result from almost all combustion processes and most have to be removed, as they can be deposited in the combustion chamber or other components, particularly after a long operating period, and restrict its function.
  • combustion products water and carbon dioxide at least result. These combustion products are carried along by the flow of steam and routed to the condenser.
  • a condenser is generally present anyway in known steam power plants, so that a separate condenser that is suitable for removing combustion products does not have to be provided for the purposes of the invention.
  • the internal additional firing implemented by means of the combustion chamber of a claimed steam power plant can be made available very quickly during operation of the steam turbine. It only requires ignition of the fuel introduced into the combustion chamber; the time required in particular to heat up known heat exchanger surfaces in particular is not required.
  • a claimed steam power plant also has the advantage that combustion products and/or waste gas do not necessarily have to be removed from the combustion chamber by means of a separate discharge facility, as they are carried along with the flow of steam and can be extracted at another point in the steam circuit, for example the said condenser. Also a higher steam temperature can be achieved with the invention, without having to change the design of the steam generator.
  • a claimed steam power plant can in particular also be used to supply energy in peak load periods or to boost the system frequency of an electrical energy supply network; a claimed steam power plant allows fast output regulation and can be used in a very flexible manner.
  • FIGURE An exemplary embodiment of the invention is shown in the FIGURE which follows, in which:
  • FIGURE shows a claimed steam power plant.
  • the FIGURE shows a claimed steam power plant 1 , having a steam turbine 3 coupled to a generator 21 and a fired steam generator 5 .
  • the steam turbine 3 has three stages, a first turbine stage 11 , a second turbine stage 13 and a third turbine stage 15 , which are configured as a high-pressure stage, a medium-pressure stage and a low-pressure stage.
  • the steam generator 5 is a boiler fired by coal 27 , to which combustion air 29 is supplied to maintain the coal-firing process.
  • a heating surface 37 is disposed in the area of the hot end of the steam generator 5 and an intermediate superheating heating surface 35 is disposed in a lower temperature area.
  • the heating surface 37 serves to heat a water supply 24 from a water supply tank 23 in the steam generator 5 such that operating steam can be supplied to the first turbine stage 11 .
  • the steam is subjected to intermediate superheating by means of the intermediate superheating heating surface 35 .
  • a flow of steam 17 leaves the intermediate superheating heating surface 35 in direction 9 and is routed to a firing facility.
  • the flow of steam 17 is heated in a combustion chamber 19 by means of a fuel 33 and the introduction of oxygen 31 , with the flow of steam 17 in the combustion chamber 19 mixing with the hot gas that results in the combustion chamber 19 during combustion of the fuel 33 .
  • the thermal transfer from the hot gas to the flow of steam 17 therefore takes place directly by mixing, without a material, for example a heat exchanger surface, being provided for the thermal transfer.
  • a hydrocarbon, in particular methane, or hydrogen can be used as the fuel 33 .
  • the flow of steam 17 heated by means of the combustion chamber 19 is supplied to the second turbine stage 13 , where it converts at least some of the energy contained in it to mechanical work.
  • the thus further expanded steam leaves the second turbine stage 13 and is routed to the third turbine stage 15 , where the energy still present in the steam is converted as efficiently as possible to mechanical energy.
  • the expanded steam leaves the third turbine stage 15 as a water/steam mixture and is routed to a condenser 25 , where the steam element still present is condensed to water.
  • This water collecting in the condenser 25 is supplied to the water supply tank 23 as condensate 26 .
  • Combustion products 39 which result during combustion in the combustion chamber 19 , can be removed from the condenser 25 .
  • combustion products 39 are carried along by the flow of steam 17 in the steam circuit and removed from the condenser 25 according to this embodiment of the invention.
  • the combustion products 39 comprise water and carbon dioxide.
  • This water/carbon dioxide mixture is carried along by the flow of steam 17 and can be removed from the condenser 25 , as the water element is largely condensed during cooling of the water/carbon dioxide mixture, leaving a gas in the form of almost pure gaseous carbon dioxide, which can then be carried away and stored for example.

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)
  • Air Supply (AREA)
US10/569,564 2003-08-27 2004-07-26 Steam power plant Abandoned US20060266040A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20313279.3 2003-08-27
DE20313279U DE20313279U1 (de) 2003-08-27 2003-08-27 Dampfkraftwerk
PCT/EP2004/008348 WO2005021935A1 (de) 2003-08-27 2004-07-26 Dampfkraftwerk

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/555,723 Division US8186338B2 (en) 2004-05-25 2009-09-08 Pneumatic paintball marker

Publications (1)

Publication Number Publication Date
US20060266040A1 true US20060266040A1 (en) 2006-11-30

Family

ID=29265806

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/569,564 Abandoned US20060266040A1 (en) 2003-08-27 2004-07-26 Steam power plant

Country Status (10)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110094239A1 (en) * 2009-09-30 2011-04-28 Hitachi, Ltd. Low NOx Combustor for Hydrogen-Containing Fuel and its Operation
US11988114B2 (en) 2022-04-21 2024-05-21 Mitsubishi Power Americas, Inc. H2 boiler for steam system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012012683A1 (de) * 2012-06-27 2014-01-02 RERUM COGNITIO Institut GmbH Kombinierter Gas- und Dampfturbinenprozess mit erhöhter Leistung und verbesserter Effizienz durch zusätzliche Hochtemperatur-Zwischenüberhitzung für die Elektroenergieerzeugung im Kreisprozess
JP6541050B2 (ja) * 2014-04-28 2019-07-10 日本ファーネス株式会社 高温酸素燃焼装置及び高温酸素燃焼方法
CN104061028B (zh) * 2014-06-24 2016-02-24 华北电力大学 氢氧与煤粉燃烧结合的二次再热联合循环发电***及方法
CN115003958A (zh) * 2020-01-29 2022-09-02 西门子能源环球有限责任两合公司 具有附加模块的设备
JP2024027572A (ja) * 2022-08-18 2024-03-01 株式会社東芝 コンバインドサイクル発電設備

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5038568A (en) * 1989-11-20 1991-08-13 Pyropower Corporation System for reheat steam temperature control in circulating fluidized bed boilers
US5347814A (en) * 1991-12-23 1994-09-20 Abb Carbon Ab Steam system in a multiple boiler plant
US5956937A (en) * 1994-08-25 1999-09-28 Clean Energy Systems, Inc. Reduced pollution power generation system having multiple turbines and reheater
US6125634A (en) * 1992-09-30 2000-10-03 Siemens Aktiengesellschaft Power plant
US20030153216A1 (en) * 2000-09-06 2003-08-14 Van-Drentham-Susman Hector Filipus Alexander Propulsion apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3017937B2 (ja) * 1996-06-18 2000-03-13 株式会社東芝 水素燃焼タービンプラント
DE19936704A1 (de) * 1999-08-04 2001-02-08 Alexander Waberski Hochtemperatur Kombi-System mit der nachgeschaltenen Dampfturbine
JP2002309908A (ja) * 2001-04-11 2002-10-23 Mitsubishi Heavy Ind Ltd タービン設備及びタービン設備の運転方法
US7284362B2 (en) * 2002-02-11 2007-10-23 L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procedes Georges Claude Integrated air separation and oxygen fired power generation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5038568A (en) * 1989-11-20 1991-08-13 Pyropower Corporation System for reheat steam temperature control in circulating fluidized bed boilers
US5347814A (en) * 1991-12-23 1994-09-20 Abb Carbon Ab Steam system in a multiple boiler plant
US6125634A (en) * 1992-09-30 2000-10-03 Siemens Aktiengesellschaft Power plant
US5956937A (en) * 1994-08-25 1999-09-28 Clean Energy Systems, Inc. Reduced pollution power generation system having multiple turbines and reheater
US20030153216A1 (en) * 2000-09-06 2003-08-14 Van-Drentham-Susman Hector Filipus Alexander Propulsion apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110094239A1 (en) * 2009-09-30 2011-04-28 Hitachi, Ltd. Low NOx Combustor for Hydrogen-Containing Fuel and its Operation
US8607572B2 (en) * 2009-09-30 2013-12-17 Hitachi, Ltd. Low NOx combustor for hydrogen-containing fuel and its operation
US11988114B2 (en) 2022-04-21 2024-05-21 Mitsubishi Power Americas, Inc. H2 boiler for steam system

Also Published As

Publication number Publication date
KR20060069852A (ko) 2006-06-22
EP1658418A1 (de) 2006-05-24
IL173778A0 (en) 2006-07-05
RS20060127A (en) 2007-12-31
EG24289A (en) 2009-01-08
DE20313279U1 (de) 2003-10-16
JP2007503544A (ja) 2007-02-22
WO2005021935A1 (de) 2005-03-10
RS51511B (en) 2011-06-30
CN1842638A (zh) 2006-10-04

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Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HABERBERGER, GEORG;KAIL, CHRISTOPH;REEL/FRAME:018134/0802;SIGNING DATES FROM 20060226 TO 20060309

STCB Information on status: application discontinuation

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