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A catalytic gas turbine includes a compressor, a catalytic combustor, a turbine, and a flow path conducting a bypass portion of the compressed air around the combustor and turbine. A method of operating the catalytic gas turbine to activate a catalyst in the catalytic combustor includes opening an i

A catalytic gas turbine includes a compressor, a catalytic combustor, a turbine, and a flow path conducting a bypass portion of the compressed air around the combustor and turbine. A method of operating the catalytic gas turbine to activate a catalyst in the catalytic combustor includes opening an inlet guide vane upstream of the compressor to a position to produce an increased volume of compressed air. The increased volume exceeds a volume of compressed air needed to support combustion. A bypass portion of the compressed air is extracted and directed around the combustor and turbine. The method may also include extracting a recirculation portion of the compressed air and directing the recirculation portion into the inlet of the compressor.

대표청구항 ▼

We claim as our invention: 1. A catalytic gas turbine comprising: a compressor receiving an inlet air and producing compressed air, a catalytic combustor receiving a combustion portion of the compressed air and producing a hot combustion gas; a turbine receiving the combustion gas; a flow path cond

We claim as our invention: 1. A catalytic gas turbine comprising: a compressor receiving an inlet air and producing compressed air, a catalytic combustor receiving a combustion portion of the compressed air and producing a hot combustion gas; a turbine receiving the combustion gas; a flow path conducting a bypass portion of the compressed air around the combustor and turbine; and further comprising a recirculation flow path receiving a recirculation portion of the compressed air and conducting the recirculation portion into the inlet air. 2. The catalytic gas turbine of claim 1, further comprising a bypass metering valve, responsive to a bypass valve control signal, positioned in the flow path for controlling a flow of the bypass portion. 3. The catalytic gas turbine of claim 2, further comprising a controller for generating the bypass valve control signal responsive to at least one of the group consisting of an air-to-fuel ratio in the catalytic combustor, a temperature of a catalyst in the combustor, a temperature of the combustion gas, and the speed of rotation of the turbine. 4. The catalytic gas turbine of claim 1, wherein the compressor comprises stages numbering 1 through N consecutively from a lowest pressure stage to a highest pressure stage, the bypass portion extracted from a stage having a stage number greater than N/2. 5. A catalytic gas turbine comprising: a compressor receiving inlet air and producing compressed air; a catalytic combustor receiving a combustion portion of the compressed air and producing a combustion gas; a turbine receiving the combustion gas and producing an exhaust gas; and a flow path receiving a recirculation portion of the compressed air and conducting the recirculation portion into the inlet air. 6. The catalytic gas turbine of claim 5, further comprising a recirculation metering valve, responsive to a recirculation valve control signal, positioned in the flow path for controlling a flow of the recirculation portion. 7. The catalytic gas turbine of claim 6, further comprising a controller for generating the recirculation valve control signal responsive to at least one of the group consisting of a temperature of the combustion gas, a temperature of the exhaust gas, a temperature of the inlet air, and a temperature of an ambient air. 8. The catalytic gas turbine of claim 6, wherein the compressor comprises stages numbering 1 through N consecutively from a lowest pressure stage to a highest pressure stage, the recirculation inlet disposed downstream of a stage having a stage number greater than N/2.