Method and apparatus for indirect catalytic combustor preheating
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United States of America Patent
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Issued Date -
Jun 24, 2004
app pub date -
Dec 4, 2003
filing date -
Apr 2, 1998
priority date (Note) -
Abandoned
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Abstract
A turbogenerator system including a recuperator and a catalytic combustor employs a preheater located between the turbine outlet and the recuperator low-pressure inlet to heat the low-pressure turbine exhaust. Heat from the turbine exhaust is transferred to a cool high-pressure flow in the recuperator. A recirculation loop employs valves downstream of the recuperator low-pressure outlet to divert the recuperator low-pressure exhaust into the compressor to be recirculated through the recuperator high-pressure side and the catalytic combustor. Reduced start-up times and emissions are achieved by raising the combustor catalyst to its light-off temperature in a shorter period of time.
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