ES347912A1 - Start-up system for combined circulation steam generator - Google Patents

Start-up system for combined circulation steam generator

Info

Publication number
ES347912A1
ES347912A1 ES347912A ES347912A ES347912A1 ES 347912 A1 ES347912 A1 ES 347912A1 ES 347912 A ES347912 A ES 347912A ES 347912 A ES347912 A ES 347912A ES 347912 A1 ES347912 A1 ES 347912A1
Authority
ES
Spain
Prior art keywords
deaerator
pass
fluid
economizer
valve
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.)
Expired
Application number
ES347912A
Other languages
Spanish (es)
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Publication of ES347912A1 publication Critical patent/ES347912A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
    • F22B35/08—Control systems for steam boilers for steam boilers of forced-flow type of forced-circulation type
    • F22B35/083—Control systems for steam boilers for steam boilers of forced-flow type of forced-circulation type without drum, i.e. without hot water storage in the boiler
    • 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
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
    • F01K3/22—Controlling, e.g. starting, stopping
    • 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
    • F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
    • F22B29/12—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes operating with superimposed recirculation during starting and low-load periods, e.g. composite boilers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

During start-up of a forced through-flow boiler with partial recirculation, throttle valves BT, BE are closed and the increase in volume of the heated working fluid is relieved through a by-pass 44 leading from a point between the feedwater heater 28 and economizer 30 to a point, such as the deaerator 26, in the low pressure part of the feed circuit. Throttle valves 46 and throttling orifices or capillary devices 48 are arranged so that the pressure drop thereacross does not produce flashing until the fluid reaches the deaerator 26. One valve 46 may be controlled by the passage at the inlet to economizer 30. At a later stage of start-up, the valve BE is opened to allow the fluid from the evaporator 32 to flow to a separator 36, the water from which is returned to condenser 20 whilst the steam flows through pipe 37 to the superheater 34. In Fig. 2 the high pressure feed pump 18 is provided with a return by-pass 54 leading back to deaerator 26 and the pipe 58 relieving the excess fluid during start-up is connected to the by-pass 54.
ES347912A 1966-12-12 1967-12-02 Start-up system for combined circulation steam generator Expired ES347912A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US600905A US3370573A (en) 1966-12-12 1966-12-12 Start-up system for combined circulation steam generator

Publications (1)

Publication Number Publication Date
ES347912A1 true ES347912A1 (en) 1969-06-01

Family

ID=24405539

Family Applications (1)

Application Number Title Priority Date Filing Date
ES347912A Expired ES347912A1 (en) 1966-12-12 1967-12-02 Start-up system for combined circulation steam generator

Country Status (9)

Country Link
US (1) US3370573A (en)
BE (1) BE707074A (en)
CH (1) CH485984A (en)
DE (1) DE1576862B2 (en)
ES (1) ES347912A1 (en)
FR (1) FR1554796A (en)
GB (1) GB1195260A (en)
NL (1) NL6716498A (en)
SE (1) SE318893B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774579A (en) * 1971-02-17 1973-11-27 Hitachi Ltd Method and apparatus for restarting boiler feed-water pump system
US3972193A (en) * 1975-01-02 1976-08-03 Foster Wheeler Energy Corporation Integral separator start-up system for a vapor generator with constant pressure furnace circuitry
DE2758278C2 (en) * 1977-12-27 1986-05-28 Kraftwerk Union AG, 4330 Mülheim Method for improving the permissible load change rate of a once-through steam generator and device for carrying out this method
JPS5835304A (en) * 1981-08-28 1983-03-02 株式会社日立製作所 Method and device for warming high-pressure feedwater heater
US5048466A (en) * 1990-11-15 1991-09-17 The Babcock & Wilcox Company Supercritical pressure boiler with separator and recirculating pump for cycling service
US5474034A (en) * 1993-10-08 1995-12-12 Pyropower Corporation Supercritical steam pressurized circulating fluidized bed boiler
DE19544226B4 (en) * 1995-11-28 2007-03-29 Alstom Combined plant with multi-pressure boiler
US6918254B2 (en) * 2003-10-01 2005-07-19 The Aerospace Corporation Superheater capillary two-phase thermodynamic power conversion cycle system
US9696027B2 (en) * 2009-12-21 2017-07-04 General Electric Technology Gmbh Economizer water recirculation system for boiler exit gas temperature control in supercritical pressure boilers
WO2014133869A1 (en) * 2013-03-01 2014-09-04 Conocophillips Company Throttling boiler for fouling mitigation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH371813A (en) * 1959-10-16 1963-09-15 Sulzer Ag Steam power plant
US3194218A (en) * 1963-03-25 1965-07-13 Combustion Eng Apparatus and method for starting forced flow once-through steam generating power plant

Also Published As

Publication number Publication date
GB1195260A (en) 1970-06-17
SE318893B (en) 1969-12-22
US3370573A (en) 1968-02-27
DE1576862B2 (en) 1971-09-23
BE707074A (en) 1968-05-24
CH485984A (en) 1970-02-15
NL6716498A (en) 1968-06-13
DE1576862A1 (en) 1970-10-01
FR1554796A (en) 1969-01-24

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