Improved process and catalyst structure employing integral...

F - Mech Eng,Light,Heat,Weapons – 01 – N

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F01N 3/28 (2006.01) F23C 6/04 (2006.01) F23C 9/00 (2006.01) F23C 13/00 (2006.01) F23R 3/40 (2006.01)

Patent

CA 2184752

The invention is an improved catalyst structure and its use in highly exothermic processes like catalyst combustion. This improved catalyst structure employed integral heat exchange in an array of longitudinally disposed, adjacent reaction passage-ways or channels, which are either catalyst-coated (14) or catalyst-free (16), wherein the configuration of the catalyst-coated channels (14) differ from the non-catalyst channels (16) such that, when applied in exothermic reaction processes, such as catalyst, combustion, the desired reaction is promoted in the catalytic channels (14) and substantially limited in the non-catalytic channels (16). The invention further comprises an improved reaction system and process for combustion of a fuel wherein catalytic combustion using a catalyst structure employing integral heat exchange, preferably the improved structures of the invention, affords a partially-combusted, gaseous product which is passed to a homogeneous combustion zone where complete combustion is promoted by means of a flameholder.

L'invention concerne une structure améliorée de catalyseur et son utilisation pour des processus hautement exothermiques, tels que la combustion catalytique. Cette structure améliorée de catalyseur assure un échange thermique intégral grâce à un agencement de passages ou de canaux de réaction adjacents, qui sont disposés longitudinalement et qui sont soit chargés de catalyseur (14) ou exempts de catalyseur (16), la configuration des canaux chargés de catalyseur (14) différant de celle des canaux sans catalyseur (16) pour que, lorsqu'on met en oeuvre des réactions exothermiques, telles qu'une combustion catalytique, la réaction souhaitée est favorisée dans les canaux catalytiques (14) et sensiblement limitée dans les canaux non catalytiques (16). L'invention concerne en outre un système et un procédé réactionnels améliorés pour la combustion catalytique d'un carburant faisant appel à un échange thermique intégral, de préférence avec la structure améliorée de l'invention, où un produit gazeux partiellement brûlé passe dans une zone de combustion homogène, dans laquelle une combustion complète est assurée par un stabilisateur de combustion.

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