Patent ID: 7294321
Filing Date: 2007-11-13
Classification: B01D

Abstract:
1. A regenerative selective catalytic process, comprising the steps of: (a) causing a predetermined concentration of at least one reactant to be mixed with a predetermined quantity of a contaminant-containing gas to form a mixed gas; (b) introducing the mixed gas into a treatment apparatus; and (c) treating the mixed gas within the treatment apparatus to reduce the concentration of contaminant in the mixed gas, wherein the treatment apparatus includes a plurality of heat transfer areas and a plurality of catalyst areas, and wherein such treatment entails: (d) causing the mixed gas to be expelled from the apparatus by activating a first gas movement influencing device that is in communication with at least one of the plurality of heat transfer areas of the apparatus; and (e) purging reactant from the apparatus during treatment step (c) by activating a second gas movement influencing device that is in communication with at least a third of the plurality of heat transfer areas of the apparatus not being used in said treatment step (c).