Patent ID: 6565628
Filing Date: 2003-05-20
Classification: B01D,C01B,Y02C,Y02P

Abstract:
A pressure swing adsorption process for recovering a less strongly adsorbable component from a feed gas mixture comprising at least one less strongly adsorbable component and at least one more strongly adsorbable component, which process comprises performing sequential process steps in an adsorbent bed which include an adsorption step, two or more pressure equalization steps at decreasing pressure, a provide purge step, a blowdown step, a purge step, two or more pressure equalization steps at increasing pressure, and a final repressurization step, wherein the duration of each pressure equalization step is less than about 25 seconds and the adsorbent bed is one of at least four parallel adsorbent beds undergoing the sequential process steps in a cyclic manner.