초록 ▼

Particulate sorbent compositions comprising zinc titanate support having thereon a substantially reduced valence promotor metal selected from the group consisting of cobalt, nickel, iron, manganese, copper, molybdenum, tungsten, silver, tin and vanadium or mixtures thereof provide a system for the d

Particulate sorbent compositions comprising zinc titanate support having thereon a substantially reduced valence promotor metal selected from the group consisting of cobalt, nickel, iron, manganese, copper, molybdenum, tungsten, silver, tin and vanadium or mixtures thereof provide a system for the desulfurization of a feed stream of cracked-gasolines or diesel fuels in a desulfurization zone by a process which comprises contacting such feed streams in a desulfurization zone with a particulate sorbent composition followed by separation of the resulting low sulfur-containing steam and sulfurized sorbent and thereafter regenerating and activating the separated sorbent before recycle of same to the desulfurization zone.

대표청구항 ▼

1. 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 promotor wherein said metal is selected from the group consist

1. 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 promotor 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) separation 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.