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1. EP2642098 - Gas turbine power plant with non-homogeneous input gas

Office
European Patent Office
Application Number 12161146
Application Date 24.03.2012
Publication Number 2642098
Publication Date 25.09.2013
Publication Kind A1
IPC
F02C 7/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
08Heating air supply before combustion, e.g. by exhaust gases
F02C 3/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
34with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
F23R 3/28
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
28characterised by the fuel supply
F23R 3/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
28characterised by the fuel supply
34Feeding into different combustion zones
CPC
F02C 3/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
34with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
F02C 3/13
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
3Gas-turbine plants characterised by the use of combustion products as the working fluid
04having a turbine driving a compressor
13having variable working fluid interconnections between turbines or compressors or stages of different rotors
F02C 7/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
08Heating air supply before combustion, e.g. by exhaust gases
F23C 9/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
9Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
F23C 2202/30
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
2202Fluegas recirculation
30Premixing fluegas with combustion air
F23R 3/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
3Continuous combustion chambers using liquid or gaseous fuel
02characterised by the air-flow or gas-flow configuration
04Air inlet arrangements
Applicants ALSTOM TECHNOLOGY LTD
Inventors GUETHE FELIX
POYYAPAKKAM MADHAVAN
GRAF FRANK
SCHUERMANS BRUNO
BENZ ERIBERT
Priority Data 12161146 24.03.2012 EP
Title
(DE) Gasturbinenkraftwerk mit inhomogenem Eintrittsgas
(EN) Gas turbine power plant with non-homogeneous input gas
(FR) Centrale de turbine à gaz avec gaz d'arrivée hétérogène
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zum Betrieb einer Gasturbine (6), die einen Verdichter (1) mit ringförmiger Eintrittsfläche, mindestens zwei Brenner, eine Brennkammer (4, 14, 15) und eine Turbine (7, 16, 17) umfasst. Gemäss dem Verfahren werden dem Verdichter (1) mindestens ein erster Ansaugteilstrom aus sauerstoffreduziertem Gas (21), das eine Sauerstoffkonzentration hat, die kleiner als die mittlere Sauerstoffkonzentration des Verdichteransaugstroms ist, und mindestens ein zweiter Ansaugteilstrom aus Frischluft (2) in Umfangsrichtung der Eintrittsfläche alternierend zugeführt. Weiter betrifft die Erfindung ein Gasturbinenkraftwerk mit einer Gasturbine (6) deren Verdichtereinlass (3) mindestens einen ersten Ausschnitt (51) und mindestens einen zweiten Ausschnitt (52) umfasst, die in Umfangsrichtung um einen Verdichtereintritt alternierend angeordnet sind. Wobei eine Zuführung für ein sauerstoffreduziertes Gas (21) an den ersten Ausschnitt (51) und eine Frischluftzuleitung an den zweiten Ausschnitt (52) des Verdichtereinlasses (3) angeschlossen sind.