EP0643267A1 - Verfahren und vorrichtung zur vormischenden gasverbrennung - Google Patents

Verfahren und vorrichtung zur vormischenden gasverbrennung Download PDF

Info

Publication number
EP0643267A1
EP0643267A1 EP94908507A EP94908507A EP0643267A1 EP 0643267 A1 EP0643267 A1 EP 0643267A1 EP 94908507 A EP94908507 A EP 94908507A EP 94908507 A EP94908507 A EP 94908507A EP 0643267 A1 EP0643267 A1 EP 0643267A1
Authority
EP
European Patent Office
Prior art keywords
premixed gas
combustion
gas
fuel
combustor
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.)
Granted
Application number
EP94908507A
Other languages
English (en)
French (fr)
Other versions
EP0643267B1 (de
EP0643267A4 (de
Inventor
Shigemi Takasago Mach. Works Mitsubishi Mandai
Katsunori Takasago Mach. Works Mitsubishi Tanaka
Nobuo Takasago Research & Development Ctr. Sato
Satoshi Takasago Res. & Dev. Ctr. Tanimura
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0643267A1 publication Critical patent/EP0643267A1/de
Publication of EP0643267A4 publication Critical patent/EP0643267A4/de
Application granted granted Critical
Publication of EP0643267B1 publication Critical patent/EP0643267B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F23L7/005—Evaporated water; Steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04—Air inlet arrangements
    • F23R3/10—Air inlet arrangements for primary air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2210/00—Noise abatement

Definitions

  • This invention relates to a method for the combustion of a premixed gas in a combustor having a fuel-air premixing nozzle and useful for effecting low-NO x combustion and a combustor therefor.
  • This invention can be applied to such combustors as gas turbine combustors, boilers, and furnaces for use in chemical industry.
  • FIG. 3 illustrates a part of a burner based on the conventional method for the combustion of a premixed gas.
  • reference numeral 1 designates a premixing nozzle
  • 2 designates a premixed gas
  • 3 designates a flame holder
  • 4 designates a flame
  • 5 designates a circulating or staying hot gas
  • 6 designates a pilot nozzle
  • 7 designates a pilot fuel.
  • the premixed gas 2 injected through the premixing nozzle 1 into the combustion chamber burns so as to go round the flame holder 3, thus forming downstream a circulating hot gas 5 serving for flame holding.
  • the combustion rate of the premixed gas i.e., the velocity at which the flame advances into the unburned mixture
  • the fuel concentration may cause marked variation in the resulting combustion rate.
  • variation in combustion rate causes variation in flame length and may eventually lead to the development of combustive vibration.
  • the present invention has been made for the purpose of solving the above-described problem and has for its object the provision of a method and combustor for the combustion of a premixed gas which can minimize the development of combustive vibration due to variation in the fuel concentration of the premixed gas.
  • the present invention provides:
  • a neutral fluid is fed between the premixed gas layer and the hot gas, so that a flame is not propagated directly from the hot gas to the premixed gas. Instead, a mid-temperature gas is generated by the mixing and diffusion of the hot gas and the neutral fluid. Thereafter, the premixed gas is burned as a result of the mixing and diffusion of the mid-temperature gas and the premixed gas.
  • the mechanism by which the premixed gas is burned is such that the hot gas and the premixed gas intermingle with each other, during this process the premixed gas is heated by the heat transferred from the hot gas, and combustion is initiated when the combustion starting temperature is reached.
  • the premixed gas is burned under mixing and diffusion rate control, as contrasted with an ordinary premixed flame in which combustion is effected by flame propagation. Consequently, it is possible to achieve combustion which is little affected by the fuel concentration of the premixed gas.
  • diffusion means that the hot gas and the premixed gas intermingle with each other
  • rate control means the controlling of the rate of such diffusion.
  • Diffusion rate control means the controlling of the rate at which the hot gas and the premixed gas intermingle with each other.
  • the flame temperature in this mixing region is low and the production of NO x in this region is minimized.
  • the premixed gas is burned under diffusion rate control, the main flame is long, and heat generation or heat generation quotient can be spread in space, so that combustive vibration can be prevented.
  • the reason why combustive vibration can be prevented is that the combustion pressure is reduced by dispersion of the heat generation and, moreover, the variation of flame length relative to the total flame length becomes smaller as a result of the prolongation of the flame.
  • heat generation quotient means the per area combustion (dQ/dx) of fuel (Q) with respect to the axial distance (x) of a combustor.
  • FIG. 1 illustrates an exemplary burner for carrying out the method of the present invention.
  • the same elements as shown in FIG. 3 are designated by the same reference numerals and no detailed explanation thereof is given.
  • a passage for feeding a neutral fluid 8 is formed between a premixing nozzle 1 and a pilot nozzle 6.
  • the orifice for injecting the neutral fluid 8 into the combustion chamber is configured so as to cause the neutral fluid 8 to flow out along the inner wall surface of a flame holder 3.
  • the neutral fluid 8 is a fluid containing no fuel and may comprise, for example, air, exhaust gas, steam or the like.
  • a neutral fluid is fed between a layer of a premixed gas 2 injected through the premixing nozzle 1 and a circulating hot gas 5, so that the premixed gas 2 injected through the premixing nozzle 1 does not come into direct contact with the hot gas 5.
  • the neutral fluid 8 is first mixed with the hot gas 5 to generate a mid-temperature gas. Then, in a downward region, this mid-temperature gas is mixed with the premixed gas 2 to form a flame 4.
  • the premixed gas 2 separated from the hot gas 5 by the neutral fluid 8 can be burned under diffusion rate control, so that a long main flame results. This means that the heat generation quotient can be spatially spread and small to prevent combustive vibration.
  • FIG. 2 is a graph showing the states of combustive vibration when combustion was effected in a burner using air as the neutral fluid 8 according to the method of the present invention and in a conventional burner.
  • the ordinate shows the internal pressure fluctuation of the combustor which serves as a measure of combustive vibration
  • the abscissa shows the proportion of the pilot fuel (i.e., the pilot fuel 7 for the formation of a diffusion flame) to the total fuel (i.e., the main fuel plus the pilot fuel).
  • FIG. 2 indicates that, regardless of the proportion of the pilot fuel, the internal pressure fluctuation ratio is lower in the presence of a neutral fluid (the present invention) than in the absence of a neutral fluid (the prior art). That is, FIG. 2 indicates less combustive vibration in the presence of a neutral fluid, demonstrating the effects of the present invention.
  • the present invention is not limited to the burner design illustrated in FIG. 1, but comprehends all combustors involving the formation of a circulating flow wherein a neutral fluid is fed between the circulating flow and the premixed gas.
  • the present invention can be applied to combustors having various flame-holding plates and combustors forming a circulating flow or a stagnation point in a region having an abruptly expanded flow path.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP94908507A 1993-03-08 1994-03-08 Verfahren und vorrichtung zur verbrennung von vorgemischtem gas Expired - Lifetime EP0643267B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP72948/93 1993-03-08
JP7294893 1993-03-08
JP07294893A JP3197103B2 (ja) 1993-03-08 1993-03-08 予混合気の燃焼方法
PCT/JP1994/000363 WO1994020793A1 (en) 1993-03-08 1994-03-08 Premixed gas burning method and combustor

Publications (3)

Publication Number Publication Date
EP0643267A1 true EP0643267A1 (de) 1995-03-15
EP0643267A4 EP0643267A4 (de) 1996-03-27
EP0643267B1 EP0643267B1 (de) 1999-07-28

Family

ID=13504120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94908507A Expired - Lifetime EP0643267B1 (de) 1993-03-08 1994-03-08 Verfahren und vorrichtung zur verbrennung von vorgemischtem gas

Country Status (5)

Country Link
EP (1) EP0643267B1 (de)
JP (1) JP3197103B2 (de)
CA (1) CA2134893C (de)
DE (1) DE69419679T2 (de)
WO (1) WO1994020793A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754908A2 (de) * 1995-07-20 1997-01-22 DVGW Deutscher Verein des Gas- und Wasserfaches -Technisch-wissenschaftliche Vereinigung- Verfahren und Vorrichtung zur Unterdrückung von Flammen-/Druckschwingungen bei einer Feuerung
WO1999004198A1 (en) * 1997-07-14 1999-01-28 Siemens Westinghouse Power Corporation PILOT BURNER WITH MEANS FOR STEAM INJECTION AND METHOD OF COMBUSTION WITH REDUCED NOx EMISSIONS
EP0900982A2 (de) * 1997-09-08 1999-03-10 Mitsubishi Heavy Industries, Ltd. Gasturbinenbrennkammer
EP1114967A1 (de) * 2000-01-07 2001-07-11 ALSTOM Power (Schweiz) AG Verfahren und Vorrichtung zur Unterdrückung von Strömungswirbeln innerhalb einer Strömungskraftmaschine
EP1134494A1 (de) * 2000-03-14 2001-09-19 Mitsubishi Heavy Industries, Ltd. Gasturbinenbrennkammer
EP1278013A2 (de) * 2001-07-17 2003-01-22 Mitsubishi Heavy Industries, Ltd. Pilotbrenner, Vormischungsverbrennungskammer und Gasturbine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253147A (ja) * 1987-04-09 1988-10-20 Nissan Motor Co Ltd 内燃機関のアイドル回転数制御装置
CA2288555C (en) 1998-11-12 2007-01-23 Mitsubishi Heavy Industries, Ltd. Gas turbine combustor
DE112004002704B4 (de) 2004-03-03 2011-04-07 Mitsubishi Heavy Industries, Ltd. Verbrennungsanlage
JP2007162998A (ja) 2005-12-13 2007-06-28 Kawasaki Heavy Ind Ltd ガスタービンエンジンの燃料噴霧装置
JP4829315B2 (ja) * 2009-01-16 2011-12-07 川崎重工業株式会社 ガスタービンエンジンの燃料噴霧装置
JP6004976B2 (ja) * 2013-03-21 2016-10-12 三菱重工業株式会社 燃焼器及びガスタービン
US9302468B1 (en) 2014-11-14 2016-04-05 Ming Xu Digital customizer system and method
US9781307B2 (en) 2014-11-14 2017-10-03 Sawgrass Technologies, Inc. Networked digital imaging customization
CN105953219B (zh) * 2016-06-21 2018-01-16 上海齐耀热能工程有限公司 无焰燃烧装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724207A (en) * 1971-08-05 1973-04-03 Gen Motors Corp Combustion apparatus
US4373325A (en) * 1980-03-07 1983-02-15 International Harvester Company Combustors
JPH04340020A (ja) * 1991-05-15 1992-11-26 Mitsubishi Heavy Ind Ltd ガスタービン燃焼器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427146A (en) * 1972-09-07 1976-03-10 Rolls Royce Combustion apparatus for gas turbine engines
GB1429677A (en) * 1973-03-20 1976-03-24 Rolls Royce Gas turbine engine combustion equipment
JPS6122106A (ja) * 1984-07-10 1986-01-30 Hitachi Ltd ガスタ−ビン燃焼器
JPH01118023A (ja) * 1987-10-30 1989-05-10 Hitachi Ltd ガスタービン燃焼器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724207A (en) * 1971-08-05 1973-04-03 Gen Motors Corp Combustion apparatus
US4373325A (en) * 1980-03-07 1983-02-15 International Harvester Company Combustors
JPH04340020A (ja) * 1991-05-15 1992-11-26 Mitsubishi Heavy Ind Ltd ガスタービン燃焼器

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17 no. 191 (M-1396) ,14 April 1993 & JP-A-04 340020 (MITSUBISHI HEAVY IND LTD) 26 November 1992, *
See also references of WO9420793A1 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754908A2 (de) * 1995-07-20 1997-01-22 DVGW Deutscher Verein des Gas- und Wasserfaches -Technisch-wissenschaftliche Vereinigung- Verfahren und Vorrichtung zur Unterdrückung von Flammen-/Druckschwingungen bei einer Feuerung
EP0754908A3 (de) * 1995-07-20 1998-01-21 DVGW Deutscher Verein des Gas- und Wasserfaches -Technisch-wissenschaftliche Vereinigung- Verfahren und Vorrichtung zur Unterdrückung von Flammen-/Druckschwingungen bei einer Feuerung
WO1999004198A1 (en) * 1997-07-14 1999-01-28 Siemens Westinghouse Power Corporation PILOT BURNER WITH MEANS FOR STEAM INJECTION AND METHOD OF COMBUSTION WITH REDUCED NOx EMISSIONS
US5987875A (en) * 1997-07-14 1999-11-23 Siemens Westinghouse Power Corporation Pilot nozzle steam injection for reduced NOx emissions, and method
EP0900982A2 (de) * 1997-09-08 1999-03-10 Mitsubishi Heavy Industries, Ltd. Gasturbinenbrennkammer
EP0900982A3 (de) * 1997-09-08 2000-08-02 Mitsubishi Heavy Industries, Ltd. Gasturbinenbrennkammer
EP1114967A1 (de) * 2000-01-07 2001-07-11 ALSTOM Power (Schweiz) AG Verfahren und Vorrichtung zur Unterdrückung von Strömungswirbeln innerhalb einer Strömungskraftmaschine
US6698209B1 (en) 2000-01-07 2004-03-02 Alstom Technology Ltd Method of and appliance for suppressing flow eddies within a turbomachine
EP1134494A1 (de) * 2000-03-14 2001-09-19 Mitsubishi Heavy Industries, Ltd. Gasturbinenbrennkammer
US6631614B2 (en) 2000-03-14 2003-10-14 Mitsubishi Heavy Industries, Ltd. Gas turbine combustor
EP1278013A2 (de) * 2001-07-17 2003-01-22 Mitsubishi Heavy Industries, Ltd. Pilotbrenner, Vormischungsverbrennungskammer und Gasturbine
EP1278013A3 (de) * 2001-07-17 2004-04-14 Mitsubishi Heavy Industries, Ltd. Pilotbrenner, Vormischungsverbrennungskammer und Gasturbine

Also Published As

Publication number Publication date
CA2134893C (en) 1999-09-07
EP0643267B1 (de) 1999-07-28
DE69419679D1 (de) 1999-09-02
WO1994020793A1 (en) 1994-09-15
JPH06257750A (ja) 1994-09-16
CA2134893A1 (en) 1994-09-15
JP3197103B2 (ja) 2001-08-13
EP0643267A4 (de) 1996-03-27
DE69419679T2 (de) 2000-03-02

Similar Documents

Publication Publication Date Title
EP0643267A1 (de) Verfahren und vorrichtung zur vormischenden gasverbrennung
US7425127B2 (en) Stagnation point reverse flow combustor
RU2455569C1 (ru) Горелка
US5121597A (en) Gas turbine combustor and methodd of operating the same
US7363756B2 (en) Method for combustion of a fuel
JPH02309124A (ja) 燃焼器及びその運転方法
US3976420A (en) Method and apparatus for burning fuels
US5901549A (en) Pilot burner fuel nozzle with uneven fuel injection for premixed type combustor producing long and short flames
US7621132B2 (en) Pilot combustor for stabilizing combustion in gas turbine engines
US6718773B2 (en) Method for igniting a thermal turbomachine
JPS59129330A (ja) 予混合燃焼形ガスタ−ビン
JP3873119B2 (ja) 円筒内旋回燃焼器
JP3272447B2 (ja) ガス燃料用バーナ
JP3482718B2 (ja) ガスタービン燃焼器
KR200157978Y1 (ko) 예혼합버너의 염공구조체
JP2607387Y2 (ja) ガスタービン燃焼器
JP4622100B2 (ja) ガスタービン用低ＮＯｘ燃焼器
JP5057363B2 (ja) ガスタービン燃焼器
JPH1130423A (ja) ガスタービン用の低ＮＯｘ燃焼器
JPS60185004A (ja) 三段燃焼装置
JPS63279010A (ja) 燃焼装置
JPH08261467A (ja) ガスタービン燃焼器
JPS63210507A (ja) バ−ナ
JPS6373005A (ja) 低ＮＯｘフアンヒ−タ
JP2001099407A (ja) ガス燃焼バーナ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19941102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

A4 Supplementary search report drawn up and despatched
AK Designated contracting states

Kind code of ref document: A4

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 19970930

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69419679

Country of ref document: DE

Date of ref document: 19990902

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: MICHELI & CIE INGENIEURS-CONSEILS

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020306

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020312

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020315

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020320

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030308

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031127

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050308