Patent ID: 7682582
Filing Date: 2010-03-23
Classification: B01D,B01J,C01B

Abstract:
1. A process for removing sulfur compounds from a gas, comprising: a) providing a sorbent, comprising; expanded perlite, a substitutional solid solution characterized by the formula Ni b) contacting the sorbent with a reducing agent in a reduction zone, c) contacting the sorbent with a tail gas stream in a sorption zone, d) regenerating at least a portion of said sulfur-laden sorbent with a regeneration gas stream in a regeneration zone to produce a regenerated sorbent and an off-gas stream comprising SO e) returning at least a portion of said regenerated sorbent to said sorption zone of step c) for a subsequent contacting step; f) routing at least a portion of said off-gas stream comprising SO