Catalytic combustion air heating system
AssigneeGeneral Electric Company
InventorsJohn Anthony Conchieri, Roy Marshall Washam, Gilbert Otto Kraemer
Life of this patent
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Abstract
A system for pre-heating a working fluid within a combustor includes a compressor for providing the working fluid to the combustor. An outer casing is disposed downstream from the compressor. The outer casing at least partially defines a high pressure plenum that at least partially surrounds the combustor. A combustion chamber is defined within the combustor downstream from the high pressure plenum. A catalytic combustor is disposed within the high pressure plenum upstream from the combustion chamber so as to provide thermal energy to the working fluid upstream from the combustion chamber.
Claims17
A system for pre-heating a working fluid within a combustor, comprising:
- a. a compressor for providing the working fluid to the combustor;
- b. an outer casing disposed downstream from the compressor, wherein the outer casing at least partially defines a high pressure plenum that at least partially surrounds the combustor;
- c. a combustion chamber defined within the combustor, wherein the combustion chamber is disposed downstream from the high pressure plenum;
- d. a catalytic combustor disposed within the high pressure plenum upstream from the combustion chamber, wherein the catalytic combustor provides thermal energy to the working fluid upstream from the combustion chamber;
- e. a combustion liner that at least partially surrounds the combustion chamber, wherein the catalytic combustor extends at least partially circumferentially around and is radially spaced from an outer surface of the compression liner with respect to a centerline axis of the combustion chamber;
- and
- f. an external oxidant supply that is in fluid communication with the catalytic combustor.
A combustor for a gas turbine, comprising:
- a. a combustion liner;
- b. a combustion chamber defined within the combustion liner;
- c. a fuel nozzle disposed upstream from the combustion chamber, wherein the fuel nozzle at least partially defines a pre-mix flow chamber;
- d. an outer casing that surrounds the combustion liner;
- e. a high pressure plenum defined within the outer casing, wherein the high pressure plenum is upstream from the pre-mix flow chamber;
- f. a catalytic combustor disposed within the high pressure plenum upstream from the pre-mix flow chamber;
- and
- g. a flow sleeve that surrounds the combustion liner defines a flow passage between the combustion liner and the flow sleeve, wherein the catalytic combustor at least partially surrounds a portion of the combustion liner at a position that is upstream from the flow passage.
A gas turbine, comprising:
- a. a compressor for providing a flow of a compressed working fluid;
- b. a combustion section disposed downstream from the compressor, the combustion section having an outer casing that defines a high pressure plenum;
- c. a turbine disposed downstream from the combustion section;
- and
- d. wherein the combustion section further comprises:
- i. a combustor that extends within the high pressure plenum, the combustor having a combustion liner, a combustion chamber defined within the combustion liner downstream from the high pressure plenum and a fuel nozzle disposed upstream from the combustion chamber;
- ii. a catalytic combustor disposed within the high pressure plenum upstream from the combustion chamber, wherein the catalytic combustor provides thermal energy to the flow of the compressed working fluid;
- and
- iii. a heat shield disposed between the catalytic combustor and the combustion liner.
Dependencies are inferred from the claim text.