Patent ID: 8167977
Filing Date: 2012-05-01
Classification: B01D,C01B,Y02C,Y02P

Abstract:
1. A method of purifying or of separating a stream of feed gas containing at least one impurity, in which method, periodically: a) contacting said stream of feed gas with a first adsorbent in order by adsorption to eliminate at least said impurity, b) recovering said purified or separated gas, c) heating a regeneration gas containing at least hydrogen (H d) regenerating the adsorbent from step a) using the regeneration gas heated in step c), e) halting the circulation of regeneration gas heated in step c) over the adsorbent of step a, wherein after step e), at least one of the following steps is performed: i) reducing the skin temperature of the heater by at least 25° C. down to a skin temperature T ii) purging the heater.