EP2677239A1 - Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz - Google Patents

Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz Download PDF

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Publication number
EP2677239A1
EP2677239A1 EP12172629.3A EP12172629A EP2677239A1 EP 2677239 A1 EP2677239 A1 EP 2677239A1 EP 12172629 A EP12172629 A EP 12172629A EP 2677239 A1 EP2677239 A1 EP 2677239A1
Authority
EP
European Patent Office
Prior art keywords
temperature
fuel
fuel supply
flame
combustion chamber
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Withdrawn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
EP12172629.3A
Other languages
German (de)
English (en)
Inventor
Michele Pesce
Adnan Eroglu
Hanspeter Knöpfel
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
Priority to EP12172629.3A priority Critical patent/EP2677239A1/fr
Publication of EP2677239A1 publication Critical patent/EP2677239A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F23R3/34—Feeding into different combustion zones
    • F23R3/346—Feeding into different combustion zones for staged combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners

Definitions

  • the present disclosure relates to a method for operating a combustion device.
  • the combustion device is preferably a combustion device of a gas turbine.
  • EP 2 434 222 discloses a combustion device having a combustion chamber connected to a plurality of burners.
  • the burners are divided in two groups, namely:
  • This structure for the combustion device and this operating concept allow a broad operating window for the gas turbine.
  • the inventors have found a method for operating a combustion device having the features above described, which permits operation with low NOx emissions.
  • An aspect of the disclosure includes providing a method for operating a combustion device generating low NOx emissions.
  • the NOx emissions generated while operating the first fuel supply to generate a flame at a first temperature and the second fuel supply to generate a flame at a second temperature are lower than the NOx emissions generated when operating a combustion device with all fuel supplies that generate flames at a temperature being the average of the first and second temperature.
  • This combustion device 1 has a combustion chamber 2 with at least a first fuel supply 3 and a second fuel supply 4.
  • the first fuel supply 3 can for example include one or more fuel supplies, such as premixed fuel supplies.
  • the premixed fuel supplies include conic shells defining substantially conic swirl chambers and slots between adjacent shells. Adjacent to the slots, fuel pipes are provided; these pipes have injectors for the fuel.
  • an air stream is introduced into the swirl chambers through the slots and fuel (gas or liquid fuel) is injected into the air stream via the pipes and their injectors.
  • the second fuel supply 4 can include one or more fuel supplies, such as premixed fuel supplies.
  • the fuel supplies can have conical shells with slots for air and pipes with injectors for fuel, as above described.
  • Reference 5 indicates the gas turbine longitudinal axis; as shown, the first fuel supply 3 is axially upstream of the second fuel supply 4 (i.e. the fuel supply 3 is upstream of the second fuel supply 4 along the axis 5).
  • the first and second fuel supplies 3, 4 can be arranged in different ways and for example they can be:
  • the fuel injected via the first fuel supply 3 generates a flame 7 having a first temperature T1.
  • the fuel injected via the second fuel supply 4 generates a flame 8 having a second temperature T2.
  • the second temperature is higher than the first temperature.
  • This temperature regulation allows a reduction of the NOx emissions when compared to the emissions of a gas turbine operating at a temperature between the first and second temperature and generating the same power output.
  • NOx generation in a combustion device largely depends on the flame temperature and residence time within the combustion chamber 2. Namely the higher the flame temperature the higher the NOx generation ( figure 2 ) and likewise the higher the residence time in the combustion chamber the higher the NOx generation (thermal NOx, figure 3 ) .
  • Figure 3 also shows the NOx generated by a combustion chamber having all fuel supplies:
  • the NOx generated in the first case is smaller than the NOx generated in the second case.
  • the flame temperature T2 at the second fuel supply 4 can be reduced, while operating the second fuel supply far from the lean blow off conditions.
  • the load can be increased by increasing the flame temperature T1 at the first fuel supply 3; in this case regulation brings the first fuel supply 3 farther from the lean blow off conditions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP12172629.3A 2012-06-19 2012-06-19 Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz Withdrawn EP2677239A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12172629.3A EP2677239A1 (fr) 2012-06-19 2012-06-19 Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12172629.3A EP2677239A1 (fr) 2012-06-19 2012-06-19 Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz

Publications (1)

Publication Number Publication Date
EP2677239A1 true EP2677239A1 (fr) 2013-12-25

Family

ID=46319015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12172629.3A Withdrawn EP2677239A1 (fr) 2012-06-19 2012-06-19 Procédé de commande d'une chambre de combustion à deux étage d'une turbine à gaz

Country Status (1)

Country Link
EP (1) EP2677239A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105952542A (zh) * 2015-03-09 2016-09-21 安萨尔多能源英国知识产权有限公司 用于操作燃气轮机的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2003554A (en) * 1977-09-02 1979-03-14 Snecma Gas turbine combustion chambers
GB2010408A (en) * 1977-12-15 1979-06-27 Gen Electric Double annular combustor configuration
WO1996027766A1 (fr) * 1995-03-08 1996-09-12 Bmw Rolls-Royce Gmbh Chambre de combustion a anneau double et etagement axial pour une turbine a gaz
EP2434222A1 (fr) 2010-09-24 2012-03-28 Alstom Technology Ltd Chambre de combustion et procédé de fonctionnement d'une chambre de combustion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2003554A (en) * 1977-09-02 1979-03-14 Snecma Gas turbine combustion chambers
GB2010408A (en) * 1977-12-15 1979-06-27 Gen Electric Double annular combustor configuration
WO1996027766A1 (fr) * 1995-03-08 1996-09-12 Bmw Rolls-Royce Gmbh Chambre de combustion a anneau double et etagement axial pour une turbine a gaz
EP2434222A1 (fr) 2010-09-24 2012-03-28 Alstom Technology Ltd Chambre de combustion et procédé de fonctionnement d'une chambre de combustion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105952542A (zh) * 2015-03-09 2016-09-21 安萨尔多能源英国知识产权有限公司 用于操作燃气轮机的方法

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