IN2012DN01926A - - Google Patents

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Publication number
IN2012DN01926A
IN2012DN01926A IN1926DEN2012A IN2012DN01926A IN 2012DN01926 A IN2012DN01926 A IN 2012DN01926A IN 1926DEN2012 A IN1926DEN2012 A IN 1926DEN2012A IN 2012DN01926 A IN2012DN01926 A IN 2012DN01926A
Authority
IN
India
Prior art keywords
forced
working medium
steam generator
flow
heater
Prior art date
Application number
Inventor
Thoralf Berndt
Qiurong Chen
Original Assignee
Alstom Technology Ltd
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 Alstom Technology Ltd filed Critical Alstom Technology Ltd
Publication of IN2012DN01926A publication Critical patent/IN2012DN01926A/en

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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
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
    • F22D1/325—Schematic arrangements or control devices therefor
    • 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
    • F01K7/34—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 extraction or non-condensing type; Use of steam for feed-water heating

Abstract

The invention relates to a method for opera¬ting a forced-flow steam generator operating at variable pressure and at a steam temperature above 650°C and redu¬cing the minimum forced-flow load of the forced-flow steam generator, wherein the forced-flow steam generator is incorporated in the water-/steam-conducting working medium circuit of a power plant and the economizer of the forced-flow steam generator comprises at least one high-pressure pre-heater and/or a heat transfer system for pre¬heating the working medium, the at least one high-pressure pre-heater and/or the heat transfer system being arranged upstream as viewed in the working medium circuit directi¬on, wherein if a predetermined partial load point ( LT ) is exceeded, the heat absorption of the working medium wi¬thin at least one high-pressure pre-heater and/or the heat transfer system is reduced in such a way that the tempera¬ture of the water/steam working medium at the outlet of the economizer is below the boiling point relative to the corre¬sponding economizer outlet by a predetermined tempera¬ture difference ( TD ), and a forced-flow steam generator for performing the method.
IN1926DEN2012 2009-08-04 2010-07-30 IN2012DN01926A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009036064A DE102009036064B4 (en) 2009-08-04 2009-08-04 in order to operate a forced-circulation steam generator operating at a steam temperature of more than 650 ° C, as well as forced circulation steam generators
PCT/DE2010/000906 WO2011015185A2 (en) 2009-08-04 2010-07-30 Method for operating a forced-flow steam generator operating at a steam temperature above 650°c and forced-flow steam generator

Publications (1)

Publication Number Publication Date
IN2012DN01926A true IN2012DN01926A (en) 2015-07-24

Family

ID=43430085

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1926DEN2012 IN2012DN01926A (en) 2009-08-04 2010-07-30

Country Status (10)

Country Link
US (1) US8959917B2 (en)
EP (1) EP2462378B1 (en)
CN (1) CN102575840B (en)
DE (1) DE102009036064B4 (en)
HU (1) HUE028706T2 (en)
IN (1) IN2012DN01926A (en)
PL (1) PL2462378T3 (en)
RU (1) RU2538994C2 (en)
WO (1) WO2011015185A2 (en)
ZA (1) ZA201200762B (en)

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EP2546476A1 (en) * 2011-07-14 2013-01-16 Siemens Aktiengesellschaft Steam turbine installation and method for operating the steam turbine installation
EP2589760B1 (en) * 2011-11-03 2020-07-29 General Electric Technology GmbH Steam power plant with high-temperature heat reservoir
EP2682568B1 (en) * 2012-01-19 2016-03-30 Alstom Technology Ltd Heating system for a thermal electric power station water circuit
DE102012100922B4 (en) 2012-02-05 2018-12-13 Urt Umwelt- Und Recyclingtechnik Gmbh Method and device for determining at least one category of at least one insulating medium and / or for determining at least one blowing agent in an insulating medium
DE202012100381U1 (en) 2012-02-05 2012-02-20 Untha Recyclingtechnik Gmbh Device for determining at least one category of at least one insulating medium
US9617874B2 (en) * 2013-06-17 2017-04-11 General Electric Technology Gmbh Steam power plant turbine and control method for operating at low load
JP6230344B2 (en) * 2013-09-06 2017-11-15 株式会社東芝 Steam turbine plant
KR20150083374A (en) * 2014-01-09 2015-07-17 두산중공업 주식회사 Apparatus and method for reactor power control of steam turbine power generation system
EP2980475A1 (en) * 2014-07-29 2016-02-03 Alstom Technology Ltd A method for low load operation of a power plant with a once-through boiler
US20160102926A1 (en) 2014-10-09 2016-04-14 Vladimir S. Polonsky Vertical multiple passage drainable heated surfaces with headers-equalizers and forced circulation
WO2016068837A1 (en) 2014-10-27 2016-05-06 Siemens Aktiengesellschaft Low load turndown for combined cycle power plants
PT3086032T (en) * 2015-04-21 2021-01-29 General Electric Technology Gmbh Molten salt once-through steam generator
DE102015118098A1 (en) * 2015-10-23 2017-04-27 Mitsubishi Hitachi Power Systems Europe Gmbh Process for feedwater preheating a steam generator of a power plant
JP6737611B2 (en) * 2016-03-25 2020-08-12 三菱日立パワーシステムズ株式会社 Thermal power generation system and method for controlling thermal power generation system
JP6224858B1 (en) * 2017-03-17 2017-11-01 三菱日立パワーシステムズ株式会社 Power plant and operation method thereof
JP6891090B2 (en) * 2017-10-04 2021-06-18 三菱パワー株式会社 Power plant and its operation method

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US3016712A (en) * 1960-07-14 1962-01-16 Foster Wheeler Corp Method and apparatus for preheating boiler feed water for steam power plants
US3411300A (en) * 1967-05-31 1968-11-19 Combustion Eng Method and apparatus for sliding pressure operation of a vapor generator at subcritical and supercritical pressure
JPS5124438A (en) * 1974-08-09 1976-02-27 Hitachi Ltd Karyokuburantono kyusokufukaseigensochi
CH599504A5 (en) * 1975-09-26 1978-05-31 Sulzer Ag
US4290389A (en) * 1979-09-21 1981-09-22 Combustion Engineering, Inc. Once through sliding pressure steam generator
JPS61205309A (en) * 1985-03-08 1986-09-11 Hitachi Ltd Protective operating method and its device of feed water heater
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Also Published As

Publication number Publication date
PL2462378T3 (en) 2016-10-31
US8959917B2 (en) 2015-02-24
RU2012108101A (en) 2013-09-10
US20120272649A1 (en) 2012-11-01
DE102009036064B4 (en) 2012-02-23
RU2538994C2 (en) 2015-01-10
CN102575840A (en) 2012-07-11
EP2462378A2 (en) 2012-06-13
WO2011015185A3 (en) 2012-03-29
ZA201200762B (en) 2013-05-29
EP2462378B1 (en) 2016-04-06
DE102009036064A1 (en) 2011-02-10
WO2011015185A2 (en) 2011-02-10
CN102575840B (en) 2014-12-17
HUE028706T2 (en) 2016-12-28

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