| 摘要 |
A process for the removal of sulfur from a stream of a cracked-gasoline or a diesel fuel which comprises: (a) contacting said stream with a sorbent composition comprising zinc titanate, and a metal, metal oxide or metal oxide precursor promoter wherein said metal is selected from the group consisting of cobalt, nickel, iron, manganese, copper, molybdenum, tungsten, silver, tin and vanadium and mixtures thereof and wherein said promotor metal is present in a substantially reduced valence state of two or less and in an amount which will effect the removal of sulfur from a stream of cracked-gasoline or diesel fuel when contacted with said sorbent composition under desulfurization conditions, such contacting being carried out in a desulfurization zone under conditions such that there is formed a desulfurized fluid stream of cracked-gasoline or diesel fuel 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 reduced valence state of two or less metal promotor content therein which will affect the removal of sulfur from a stream of a cracked-gasoline or diesel fuel when contacted with same; and thereafter (e) returning at least a portion of the resulting desulfurized, reduced sorbent to said desulfurization zone. |
