EP2414729A2 - An ejector driven steam generator start up system - Google Patents

An ejector driven steam generator start up system

Info

Publication number
EP2414729A2
EP2414729A2 EP10723843A EP10723843A EP2414729A2 EP 2414729 A2 EP2414729 A2 EP 2414729A2 EP 10723843 A EP10723843 A EP 10723843A EP 10723843 A EP10723843 A EP 10723843A EP 2414729 A2 EP2414729 A2 EP 2414729A2
Authority
EP
European Patent Office
Prior art keywords
flow
steam generator
recirculation
feed water
steam
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Withdrawn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
EP10723843A
Other languages
German (de)
English (en)
French (fr)
Inventor
John M. Banas
Ganesh A. Ganesh
Robert J. Moriarty
Bryan W. Mruk
Pavan Kumar S. Ravulaparthy
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2414729A2 publication Critical patent/EP2414729A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F22B35/14—Control systems for steam boilers for steam boilers of forced-flow type during the starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers
    • 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
    • F22D7/00—Auxiliary devices for promoting water circulation
    • F22D7/04—Injectors for water or steam

Definitions

  • a steam generating system includes a steam generator, a separator coupled to the steam generator, a feed water supply providing feed water, a start-up system coupled to and receiving the feed water from the feed water supply, and a recirculation system coupled to the start-up system.
  • the steam generator operates in a plurality of operating modes. In at least one of the operating modes the steam generator generates a flow of steam and fluid.
  • the separator receives the steam and fluid flow and separates components of steam and fluid from the steam and fluid flow.
  • the recirculation system receives the feed water from the start-up system and provides a required flow to the steam generator during at least one of the plurality of operating modes.
  • the recirculation system includes an ejector.
  • the ejector induces at least a portion of the fluid from the separator into the recirculation system, mixes the induced fluid with the feed water to provide a recirculation flow, and the recirculation system provides the required flow to the steam generator including the recirculation flow.
  • the steam generating further includes a flash tank coupled to the downcomer conduit through a flash tank valve.
  • a flash tank coupled to the downcomer conduit through a flash tank valve.
  • the steam is passed through a conduit 144 to, for example, a turbine, and the fluid is output into a conduit 150 such as, for example, a downcomer line 150.
  • the ejector 240 induces fluid (or a percentage/portion thereof) from the downcomer 150 to the recirculation system 200 through a check valve 260 as a recirculation fluid 180.
  • the check valve 260 prevents reverse flow of the recirculation fluid 180 from the recirculation system 200 into the downcomer line 150.
  • the downcomer line 150 is also coupled to a flash tank 160 through a flash tank valve 162. Once at the flash tank 160, the fluid exits the system 100 through a drain 170. [0017]
  • the recirculation fluid 180 mixes with the heated feed water
  • shut-off valves are disposed about various components of the steam generating system 100 to selectively prohibit flow to the components.
  • shut-off valves are disposed in line with each of the inputs and output of the ejector to shut off flow to the ejector 240.
  • the recirculation system 200 may operate to direct flow through the bypass valve 210 such that the steam generating system 100 operates in the drain mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP10723843A 2009-04-02 2010-03-30 An ejector driven steam generator start up system Withdrawn EP2414729A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16604509P 2009-04-02 2009-04-02
US12/748,718 US20100251976A1 (en) 2009-04-02 2010-03-29 Ejector driven steam generator start up system
PCT/US2010/029155 WO2010114818A2 (en) 2009-04-02 2010-03-30 An ejector driven steam generator start up system

Publications (1)

Publication Number Publication Date
EP2414729A2 true EP2414729A2 (en) 2012-02-08

Family

ID=42825126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10723843A Withdrawn EP2414729A2 (en) 2009-04-02 2010-03-30 An ejector driven steam generator start up system

Country Status (4)

Country Link
US (1) US20100251976A1 (zh)
EP (1) EP2414729A2 (zh)
CN (1) CN102686944A (zh)
WO (1) WO2010114818A2 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012167909A (ja) * 2011-02-17 2012-09-06 Tlv Co Ltd 廃蒸気回収装置
WO2020035470A1 (en) * 2018-08-14 2020-02-20 Shell Internationale Research Maatschappij B.V. Gas cycle and method

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH416676A (de) * 1962-10-30 1966-07-15 Mitsubishi Shipbuilding & Eng Vorrichtung zur zwangsweisen Rückförderung von Wasser durch einen Zwangdurchlaufkessel
FR1520737A (fr) * 1966-03-05 1968-04-12 Steinmueller Gmbh L & C Procédé et dispositifs pour la mise en marche et le démarrage à sec de chaudières à circulation forcée
US3934799A (en) * 1969-12-03 1976-01-27 Hull Francis R High-capacity steam heating system
US3612005A (en) * 1970-01-12 1971-10-12 Foster Wheeler Corp Once-through steam generator recirculating startup system
CH519681A (de) * 1970-02-03 1972-02-29 Sulzer Ag Verfahren zum Betrieb eines Zwanglaufdampferzeugers im unteren Lastbereich und Zwanglaufdampferzeuger zum Durchführen des Verfahrens
US4183331A (en) * 1972-08-23 1980-01-15 Hull Francis R Forced circulation steam generator
US4290389A (en) * 1979-09-21 1981-09-22 Combustion Engineering, Inc. Once through sliding pressure steam generator
US4487166A (en) * 1981-06-08 1984-12-11 The Babcock & Wilcox Company Start-up system for once-through boilers
US5048466A (en) * 1990-11-15 1991-09-17 The Babcock & Wilcox Company Supercritical pressure boiler with separator and recirculating pump for cycling service
TW212826B (zh) * 1991-11-28 1993-09-11 Sulzer Ag
BE1005793A3 (fr) * 1992-05-08 1994-02-01 Cockerill Mech Ind Sa Chaudiere de recuperation de chaleur a circulation induite.
US5671771A (en) * 1995-02-27 1997-09-30 Brandel; Charles F. Hot water system
KR100439080B1 (ko) * 1997-06-30 2004-07-05 지멘스 악티엔게젤샤프트 폐열 증기 발생기
US8230686B2 (en) * 2008-10-09 2012-07-31 Banas John M Start-up system mixing sphere

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010114818A2 *

Also Published As

Publication number Publication date
WO2010114818A3 (en) 2012-07-05
CN102686944A (zh) 2012-09-19
WO2010114818A2 (en) 2010-10-07
US20100251976A1 (en) 2010-10-07

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