Improved catalyst configuration for catalytic combustion...

Details Improved catalyst configuration for catalytic combustion... Improved catalyst configuration for catalytic combustion...

F - Mech Eng,Light,Heat,Weapons

23

R

F23R 3/40 (2006.01) F23C 13/00 (2006.01) F23C 11/00 (1995.01)

Patent

CA 2150105

A catalyst bed (30) for a combustor (18) for supporting the catalytic combustion of a gaseous air/fuel (e.g., metbane or natural gas) combustion mixture contains an igniter catalyst member (1) upstream of a promoter catalyst member (2). The catalyst members cach comprise carrier monoliths, the igniter catalyst member (1) having an igniter catalyst material deposited thereon and the promoter catalyst member (2) having a promoter catalyst material deposited thereon. The igniter catalyst material is distinguished from the promoter catalyst material in one or more of the following ways: the igniter catalyst material may have a) a higher catalytic activity for combustion of the air/fuel mixture, b) a lower catalyst deactivation temperature than the promoter catalyst material, and/or (c) the promoter catalyst regeneration temperature range brackets the upper limit of the regeneration temperature range of the igniter catalyst.

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