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Removal of inert gases from process gases prior to compression in a gas turbine or combined cycle power plant

  • US 6,216,441 B1
  • Filed: 09/17/1997
  • Issued: 04/17/2001
  • Est. Priority Date: 09/17/1997
  • Status: Expired due to Fees
First Claim
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1. A combined cycle system comprising a gas turbine power plant including at least one gas turbine and a steam turbine where exhaust gas from the gas turbine is used to heat steam for the steam turbine in a heat recovery steam generator;

  • a process system which supplies and enriches by-product gas from a blast furnace to be used as fuel in the at least one gas turbine;

    a gas enrichment station including means for removing inert gas from the by-product gas prior to fuel gas compression to thereby provide an enriched process gas having a predetermined heating value for combustion in said at least one gas turbine;

    a gas clean-up station located upstream of the gas enrichment station for removal of particulates; and

    means for compressing and subsequently feeding the enriched process gas directly to the gas turbine at a minimum predetermined pressure required for combustion in the gas turbine; and

    wherein a portion of the enriched process gas is diverted to a burner in the heat recovery steam generator.

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