Hans Peter Luessen

62164414, Apr 17, 2001

Sep 17, 1997

8/932885

David Andrew Stats - Clifton Park NY
Hans Peter Luessen - Niskayuna NY
Ashok K. Anand - Niskayuna NY
Michael Jandrisevits - Clifton Park NY

General Electric CO - Schenectady NY

F02C 322

60 39182

In a method of operating a gas turbine wherein process by-product gases (e. g. , from a blast furnace) are used as fuel in the gas turbine, an improvement which includes the steps of a) removing inert gases from the process gas to thereby form an enriched process gas; b) raising the enriched process gas to a minimum pressure sufficient for combustion in the gas turbine, and c) feeding the enriched process gas to the gas turbine for combustion. The invention also relates to a combined cycle plant including a gas turbine; a process system which supplies by-product gas to be used as fuel in the gas turbine; a gas enrichment station for removing inert gas prior to, or part-way through, compression of the enriched process gas; a gas clean-up station located upstream or downstream of the gas enrichment station; and, optionally, a heat recovery steam generator located between the gas turbine and steam turbine; and means for conducting exhaust gas from the gas turbine to the heat recovery steam generator to generate steam for the steam turbine.

6237320, May 29, 2001

Mar 2, 1999

9/260025

David Andrew Stats - Clifton Park NY
Hans Peter Luessen - Niskayuna NY
Ashok K. Anand - Niskayuna NY
Michael Jandrisevits - Clifton Park NY

General Electric Co. - Schenectady NY

F02K 322

60 3902

In a method of operating a gas turbine wherein process by-product gases (e. g. from a blast furnace) are used as fuel in the gas turbine, an improvement which includes the steps of a) removing inert gases from the process gas to thereby form an enriched process gas; b) raising the enriched process gas to a minimum pressure sufficient for combustion in the gas turbine, and c) feeding the enriched process gas to the gas turbine for combustion. The invention also relates to a combined cycle plant including a gas turbine; a process system which supplies by-product gas to be used as fuel in the gas turbine; a gas enrichment station for removing inert gas prior to, or part-way through, compression of the enriched process gas; a gas clean-up station located upstream or downstream of the gas enrichment station; and, optionally, a heat recovery steam generator located between the gas turbine and steam turbine; and means for conducting exhaust gas from the gas turbine to the heat recovery steam generator to generate steam for the steam turbine.