Patent ID: 7179324
Filing Date: 2007-02-20
Classification: B01D,C01B

Abstract:
1. A pressure swing adsorption (PSA) process for separating a pressurized feed supply gas containing at least one more strongly adsorbable component and at least one less strongly adsorbable product gas component in a three bed system which comprises continuous feeding of a supply gas into a feed input end of an adsorber bed containing at least one solid adsorbent which preferentially adsorbs the more strongly adsorbable component and withdrawing the least strongly adsorbable product component from an exit end of the adsorber bed, producing in a twelve-step cycle in which the continuous feeding of the supply gas sequentially through each of the adsorber beds produces gas product by using continuous feed gas, constant product gas step, a product pressurization steps, a high pressure equalization step wherein two beds are equalized without evacuation or atmospheric repressurization, blowdown steps and a purge step in the PSA cycle.