Patent ID: 7037358
Filing Date: 2006-05-02
Classification: B01D,C01B

Abstract:
1. A method for reducing adsorbent degradation by moisture adsorption while producing a product gas in a pressure swing adsorption process, comprising: providing a fast cycle PSA apparatus comprising adsorbers with contaminant-sensitive adsorbents having a feed end fluidly coupled to a breather through an isolation valve, the adsorbers comprising a guard material to adsorb a contaminant in a guard layer zone and a second material in an adsorbent zone to produce a product fluid by a pressure swing, the guard layer zone being isolated on shutdown from the adsorbent zone by an isolation valve in a fluid path between the guard layer zone and the adsorbent zone; introducing a feed gas to the feed end; and using the PSA apparatus to produce a product gas by a pressure swine adsorption process over the adsorbers after removal of contaminant from the feed gas.