Catalyst structure having integral heat exchange
AssigneesCatalytica, Inc., Tanaka Kikinzoku Kogyo K.K.
InventorsRalph A. Dalla Betta, Fabio H. Ribeiro, Toru Shoji, Kazunori Tsurumi, Nobuyasu Ezawa, Sarento G. Nickolas
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Abstract
This invention is a catalyst structure having integral heat exchange surfaces and a method for using the structure in highly exothermic processes, such as a combustion process, while maintaining the catalyst and the structure wall at a temperature below the adiabatic combustion temperature.
Claims41
A catalyst structure comprising a metallic catalyst support comprising aluminum, a high temperature metal alloy, stainless steel, or an aluminum-containing steel having a multitude of longitudinal passageways adapted for the passage of combustible gas and having interior surfaces where at least a portion but not all of the interior surfaces are coated with a catalytic material suitable for oxidizing the combustible gas, and the interior surfaces coated with catalytic material are in heat exchange relationship with interior surfaces not coated with a catalytic material.
The catalyst structure of claim where 5 the catalytic material comprises platinum.
A catalyst structure comprising a catalyst support of an aluminum-containing steel, having a multitude of longitudinal passageways adapted for the passage of combustible gas and having interior surfaces, where at least a portion but not all of the interior surfaces are coated with a washcoat comprising alumina, zirconia, silica, titania, or the other refractory metal oxide and a catalytic material comprising a platinum group metal which is suitable for oxidizing the combustible gas and those coated surfaces are in a heat exchange relationship with interior surfaces not coated with a catalytic material.
Dependencies are inferred from the claim text.