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US 7,546,736 B2Granted
Methods and apparatus for low emission gas turbine energy generation
AssigneeGeneral Electric Company
InventorsThomas Charles Amond, III, Bradley Donald Crawley, Natesh Chandrashekar, Balan Nagarajan, Rebecca Arlene Feigl-Varela
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Abstract
A low-emission method for producing power using a gas turbine includes premixing a plurality of fuel and air mixtures, injecting the fuel and air mixtures into a combustion chamber using a plurality of fuel nozzles, and adjusting a ratio of fuel and air injected by at least one of the nozzles to control a fuel/air concentration distribution within the combustion chamber.
Claims6
A gas turbine comprising:
- a combustor having at least one circular combustion chamber comprising a liner, a combustion cap, and a transition piece;
- a first inverted hula seal between the combustion cap and the liner;
- a second inverted hula seal between the transition piece and the liner;
- at least one inner fuel nozzle configured to inject a premixed fuel/air mixture into the circular combustion chamber;
- a plurality of outer fuel nozzles arranged around the at least one inner fuel nozzle and configured to inject premixed fuel/air mixtures into the circular combustion chamber;
- and
- a set of manifolds configured to provide a richer fuel/air mixture to the at least one inner fuel nozzle than to the plurality of outer fuel nozzles.
4 more elements
Dependencies are inferred from the claim text.