Patent ID: 7740687
Filing Date: 2010-06-22
Classification: B01D

Abstract:
1. A pressure swing adsorption method for separating gas components, comprising: pressurizing an adsorption bed to an adsorption pressure using a first gas component of a feed gas, the adsorption bed including an adsorbent for substantially adsorbing a second gas component of a feed gas; introducing the feed gas to the pressurized adsorption bed, wherein the first gas component of the feed gas substantially passes through the pressurized adsorption bed and the second gas component of the feed gas substantially adsorbs onto the adsorbent; terminating the introducing of the feed gas to the pressurized adsorption bed and thereafter introducing the second gas component of the feed gas to the pressurized adsorption bed to recover the feed gas in the pressurized adsorption bed; introducing the recovered feed gas to a second adsorption bed already pressurized to the adsorption pressure, wherein the first gas component of the recovered feed gas substantially passes through the second adsorption bed and the second gas component of the recovered feed gas substantially adsorbs onto a second adsorbent in the second adsorption bed; and depressurizing the pressurized adsorption bed to recover at least a portion of the second gas component of the feed gas in the pressurized adsorption bed.