Patent ID: 6060032
Filing Date: 2000-05-09
Classification: B01D,Y02C

Abstract:
In a process for the removal of a carbon monoxide stream from a feed stream comprising carbon monoxide, hydrogen, carbon dioxide, methane, nitrogen and moisture wherein said process comprises contacting the feed stream at elevated pressure with a layered adsorbent bed comprising:(a) a pretreatment layer consisting of a pretreatment adsorbent in order to adsorb moisture preferentially over methane, nitrogen and carbon dioxide; and(b) a main layer consisting of a main adsorbent comprising a cuprous compound in order to adsorb carbon monoxide preferentially over hydrogen, carbon dioxide, methane and nitrogen;the improvement to the above process comprising using an adsorbent comprising cuprous chloride on a carbon containing support as said pretreatment adsorbent wherein the pretreatment adsorbent provides a surface area between 50 m.sup.2 /g to 500 m.sup.2 /g and wherein the pretreatment adsorbent has a bulk density greater than 30 lbs/ft.sup.3.