Patent ID: 6022397
Filing Date: 2000-02-08
Classification: B01D,Y10S

Abstract:
PSA process for the separation of a gaseous flow containing at least one first component that adsorbs preferentially to at least one adsorbent and at least one second component that adsorbs less preferentially to at least said adsorbent than said first component, the process comprising passing said gaseous flow through said adsorbent to preferentially adsorb said at least one first component, said adsorbent being a heterogeneous adsorbent comprising particles of adsorbent having a distribution of adsorptive capacity for nitrogen with a ratio (.sigma..sub.c /.mu..sub.c) comprised between about 0.02 and 0.15, or having a distribution of selectivity of adsorption for nitrogen relative to oxygen with a ratio (.sigma..sub.s /.mu..sub.s) comprised between about 0.02 and 0.25, or having both said distributions, wherein.sigma..sub.c designates a standard deviation of the distribution of adsorptive capacity, and .mu..sub.c a mean of said distribution of adsorptive capacity; and.sigma..sub.s designates a standard deviation of the distribution of selectivity of adsorption, and .mu..sub.s a mean of said distribution of selectivity of adsorption.