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System and method for waste heat augmentation in a combined cycle plant through combustor gas diversion

  • US 20020029558A1
  • Filed: 05/21/2001
  • Published: 03/14/2002
  • Est. Priority Date: 09/15/1998
  • Status: Active Grant
First Claim
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1. A combined cycle plant, comprising:

  • a gas turbine section including at least one compressor to generate a compressed air flow, a combustor that is structured to receive a fuel material and the compressed air flow to support combustion of the fuel material therein and to generate a combustion gas flow, at least one turbine to receive the combustion gas flow and expand the gas flow to recover mechanical energy from the gas flow, the at least one turbine generating an exhaust gas flow;

    a gas diverter system to selectively and controllably divert at least a portion of the combustion gas flow and combine the at least a portion of the combustion gas flow with the exhaust gas flow to define an inlet flow; and

    a steam cycle section including a heat recovery steam generator structured to receive the inlet gas flow, and a feed water flow and generate a steam flow from the inlet gas flow and the feed water flow, at least one turbine to receive the steam flow and expand the steam flow to recover mechanical energy from the steam flow, the at least one turbine generating an exhaust steam flow, a condenser to receive the exhaust steam flow and generate the feed water flow.

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