Method of preheating catalytic heaters

Details Method of preheating catalytic heaters Method of preheating catalytic heaters

F - Mech Eng,Light,Heat,Weapons

23

D

F23D 14/18 (2006.01) F23D 14/14 (2006.01) F23D 14/82 (2006.01)

Patent

CA 2469061

The invention provides a method of preheating a catalyst (18) in a catalytic heater (10) comprising the steps of preparing a gaseous mixture (42) of hydrogen and nitrogen in a volume ratio of between about 95% hydrogen to about 5% nitrogen and about 5% hydrogen to about 95% nitrogen and dispersing the gaseous mixture (42) into contact with the catalyst (18) for a period of time sufficient to raise the temperature of the catalyst (18) to a level that will promote the flameless oxidation of a fuel gas (32) in the presence of the catalyst (18).

L'invention concerne un procédé de pré-chauffage d'un catalyseur (18) dans un appareil de chauffage à catalyse (10), qui consiste à préparer un mélange gazeux (42) d'hydrogène et d'azote selon un rapport volumique compris entre environ 95 % d'hydrogène et environ 5 % d'azote et environ 5 % d'hydrogène et environ 95 % d'azote, et à disperser le mélange gazeux (42), de manière qu'il vienne en contact avec le catalyseur (18) pendant suffisamment de temps pour que la température du catalyseur (18) augmente jusqu'à un niveau favorisant l'oxydation sans flamme d'un gaz combustible (32) en présence du catalyseur (18).

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