Patent ID: 6506234
Filing Date: 2003-01-14
Classification: B01D,B01J,C01B,Y10S

Abstract:
A pressure swing adsorption method comprising repetitions of a cycle of N steps, said method adapted to separate components of a gas mixture into at least a first component and a second component by selective adsorption of said first component into a bed of adsorbent, said method comprising the steps of:a) during adsorption steps of a cycle, raising a pressure of a feed of said gas to said bed to an adsorption pressure so as to enable adsorption of said first component by said adsorbent, said adsorbent exhibiting an intrinsic diffusivity for said first component that is equal to or greater than 3.5Ã—10âˆ’6 m2/sec; b) during desorption steps of said cycle, depressurizing said bed to a desorption pressure so as to desorb said first component from said adsorbent, a ratio of pressures of said adsorption pressure to said desorption pressure falling within a range of less than about 5.0.