Patent ID: 6531053
Filing Date: 2003-03-11
Classification: B01J,C10G,Y10S

Abstract:
A process for the removal of organo sulfur from a stream of a cracked-gasoline or diesel fuel which comprises:(a) contacting said stream with a sorbent composition comprising a bimetallic promoter formed from two or more metals selected from the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium and a particulate support which comprises zinc oxide and an inorganic or organic carrier wherein the valence of a substantial portion of the metals of said bimetallic promoter is zero such that the reduced valence bimetallic promoter containing composition will effect the removal of organo sulfur from said stream while enhancing the olefin retention in said stream under conditions such that there is formed a desulfurized fluid stream of cracked-gasoline and a sulfurized sorbent; (b) separating the resulting desulfurized fluid stream from said sulfurized sorbent; (c) regenerating at least a portion of the separation sulfurized sorbent in a regeneration zone so as to remove at least a portion of the sulfur absorbed thereon; (d) reducing the resulting desulfurized sorbent in an activation zone so as to provide a zero valence bimetallic promoter therein which will affect the removal of the organo sulfur from a stream of cracked-gasoline when contacted with same; and (e) returning at least a portion of the resulting desulfurized, reduced bimetallic promoter containing sorbent to said desulfurization zone.