George R Lester

US Patent:

6584760, Jul 1, 2003

Filed:

Sep 12, 2000

Appl. No.:

09/659629

Inventors:

John Lipinski - Tempe AZ
Karl Fleer - San Pedro CA
Tony Prophet - Albuquerque NM
Peter Zheng - Rancho Palos Verde CA
Di-Jia Liu - Naperville IL
George Lester - Salem VA

Assignee:

Hybrid Power Generation Systems, Inc. - Los Angeles CA

International Classification:

F02C 710

US Classification:

60 39511, 60723, 165 4

Abstract:

Emissions are controlled in a recuperated gas turbine engine using an apparatus and/or method. A fixed boundary recuperator comprises a gas inlet through which flows a gas and a gas outlet in communication with the gas inlet. An air inlet flows an air through the recuperator so that the air is in heat exchange relationship with the gas. An air outlet is in communication with the air inlet. A catalyst is disposed at least at one of a plurality of locations, with the locations selected from the group that includes a position immediately upstream of the recuperator heat exchange core, a position within the recuperator heat exchange core, and a position immediately downstream of the recuperator heat exchange core. At least one parameter of the engine is tuned based on desired NO emissions and remaining undesired emissions are catalyzed in or immediately adjacent a recuperator.

US Patent:

62235370, May 1, 2001

Filed:

Nov 20, 1998

Appl. No.:

9/196556

Inventors:

John J. Lipinski - Tempe AZ
Philip J. Brine - Gilbert AZ
Rajesh D. Buch - Chandler AZ
George R. Lester - Salem VA

Assignee:

AlliedSignal Power Systems - Albuquerque NM

International Classification:

F23R 340

US Classification:

60723

Abstract:

In a catalytic combustor for gas turbines, the dimensions of the preheater and premix duct, the location of the preheater and premix fuel nozzles, and the number and location of air orifices in the combustor can inner liner are configured to result in low NOx production during both preheating combustion and catalytic combustion. Placement of the air orifices helps reduce the potential for autoignition within the premix duct, while enhancing fuel-air mixture uniformity upstream of the catalyst. At the same time, the overall configuration is optimized to result in the relative compactness of the catalytic combustor, making it particularly suitable for applications such as automotive turbine engines and microturbines.