Patent ID: 6649043
Filing Date: 2003-11-18
Classification: B01J,C07C,C10G

Abstract:
A process for regenerating a hydrogen sulfide sorbent comprising:providing a spent hydrogen sulfide sorbent containing an effective quantity of a sorbent metal or metal oxide wherein the metal is at least one of Fe, Ni, Cu, Co, and Zn, said hydrogen sulfide sorbent having a level of sulfur defining a first cycle capacity for absorbing hydrogen sulfide provided that when the metal is Cu, it is a cracking suppressor in an amount ranging from 2 to about 6 wt %; and exposing said spent hydrogen sulfide sorbent to an oxidizing atmosphere under conditions effective to oxidize said spent hydrogen sulfide sorbent; and removing sulfur from a reducing stream in order to form a substantially sulfur-free reducing stream; reducing said oxidized hydrogen sulfide sorbent to the substantially sulfur-free reducing stream for a regenerating time period under conditions effective for said reducing stream to reduce and regenerate said spent hydrogen sulfide sorbent.