Process for the production of a sulfur sorbent
AssigneePhillips Petroleum Company
InventorGyanesh P. Khare
Life of this patent
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Abstract
Particulate sorbent compositions comprising a mixture of zinc oxide, silica, alumina and a substantially reduced valence cobalt are provided for the desulfurization of a feedstream of cracked-gasoline or diesel fuels in a desulfurization zone by a process which comprises the contacting of such feedstreams in a desulfurization zone followed by separation of the resulting low sulfur-containing stream and sulfurized-sorbent and thereafter regenerating and activating the separated sorbent before recycle of same to the desulfurization zone.
Claims11
A process for the production of a sorbent composition suitable for the removal of sulfur from a cracked-gasoline or diesel fuel stream which comprises:
- (a) admixing of zinc oxide, silica and alumina so as to form a mix thereof;
- (b) particulating the resulting mix so as to form particles thereof;
- (c) drying the particulate of step (b);
- (d) calcining the dried particulate of step (c);
- (e) impregnating the resulting calcined particulate of step (d) with cobalt or a cobalt-containing compound;
- (f) drying the impregnated particulate of step (e);
- (g) calcining the dried particulate of step (f);
- and thereafter
- (h) reducing the resulting calcined particulate of step (g) with a suitable reducing agent under suitable conditions to produce a particulate composition wherein the valence of essentially all of the cobalt therein is zero such that the reduced cobalt-containing composition will affect the removal of sulfur from a stream of cracked-gasoline or diesel fuel when said stream is contacted with said reduced cobalt-containing composition.
Dependencies are inferred from the claim text.