Patent ID: 6510693
Filing Date: 2003-01-28
Classification: B01D,F02C

Abstract:
Method for producing hot working gases for a gas turbine system, the method comprising:producing a hot combustion gas through combustion in a burner, where the hot combustion gas may be used as a hot working gas; branching off a portion of a combustion waste gas; feeding the portion of the combustion waste gas into an oxygen separation device; heating oxygen-containing gas, thereby forming heated oxygen-containing gas; feeding the heated oxygen-containing gas to the oxygen separating device, wherein the oxygen separating device includes an oxygen separation means configured to remove oxygen from the heated oxygen-containing gas such that hot gas with reduced oxygen content exits the oxygen separation device; feeding the oxygen removed from the heated oxygen-containing gas to branched off waste gas formed during the branching off operation to form oxygen-enriched branched off waste gas, wherein the oxygen separation means is configured to feed the oxygen to the waste gas; forming a combustion mixture by feeding the oxygen-enriched branched off waste gas and a fuel or fuel/steam mixture to the burner where the combustion mixture burns in the burner to form the hot combustion waste gas which exits the burner; and using the hot combustion waste gas as a hot working gas wherein the oxygen-enriched branched off waste gas heats the oxygen-containing gas before the oxygen-containing gas is fed to the burner.