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US7427581: Desulfurization process and novel bimetallic sorbent systems for same

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Filing Information

Inventor(s) Gyanesh P. Khare ·
Assignee(s) China Petroleum & Chemical Corporation ·
Attorney/Agent(s) Hovey Williams LLP ·
Primary Examiner Elizabeth D Wood ·
Application Number US10347915
Filing date 01/21/2003
Issue date 09/23/2008
Prior Publication Data
Predicted expiration date 01/05/2021
Patent term adjustment 388
U.S. Classifications 502/406  · 502/343  · 502/310  · 502/311  · 502/312  · 502/313  · 502/314  · 502/315  · 502/316  · 502/317  · 502/318  · 502/324  · 502/325  · 502/330  · 502/331  · 502/332  · 502/336  · 502/337  · 502/338  · 502/308  · 502/344  · 502/345  · 502/346  · 502/347  · 502/348  · 502/349  · 502/352  · 502/353  · 502/354  · 502/407  · 502/414  · 502/415  · 502/517  · 502/321  · 502/322  · 502/323  · 502/341  · 502/305  ·
International Classifications B01J2002  · B01J2008  · B01J2010  · B01J2306  · B01J2318  · B01J2330  · B01J2350  · B01J23644  · B01J23652  · B01J2375  · B01J23755  · B01J2380  ·
Kind CodeB2
Related U.S. Application DataThis application is a continuation-in-part of U.S. patent application Ser. No. 09/864,907, filed May 24, 2001, now U.S. Pat. No. 6,531,053 which was a divisional of U.S. patent application Ser. No. 09/460,067, filed Dec. 14, 1999, now U.S. Pat. No. 6,274,533.
22 Claims, No Drawings


Abstract

Novel sorbent systems for the desulfurization of cracked-gasoline and diesel fuels are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promotors are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline and diesel fuels whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product. Such sorbents can also be utilized for the treatment of other sulfur-containing streams such as diesel fuels.

Independent Claims | See all claims (22)

  1. 1. A sorbent composition suitable for removal of sulfur from cracked-gasolines or diesel fuels, said composition comprising: (a) a bimetallic promoter formed of two or more metals selected from the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony, and vanadium; and (b) a particulated support wherein said particulate support is comprised of zinc oxide, silica and alumina, wherein said bimetallic promoter is present in a zero valence state and in an amount which effects the removal of sulfur from a stream of cracked-gasoline or diesel fuel when contacted with same under desulfurization conditions.
  2. 9. 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) impregnating a particulate support comprising zinc oxide, silica, and alumina with a bimetallic promoter formed of two or more metals selected from the group consisting of nickel, cobalt, iron, magnesium, copper, zinc, molybdenum, tungsten, silver, tin, antimony, and vanadium; (b) drying the impregnated particulate of step (a); (c) calcining the dried particulate of step (b); and thereafter (d) reducing the resulting calcined particulate of step (c) with a suitable reducing agent under suitable conditions to produce a particulate composition wherein said bimetallic promoter is in a zero valence state, wherein the reduced bimetallic promoter containing composition is present in an amount that will affect the removal of sulfur from a stream of cracked-gasoline or diesel fuel when said stream is contacted with same under desulfurization conditions.
  3. 10. 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) incorporating a bimetallic promoter into a non-particulated support composition, wherein said bimetallic promoter is formed of two or more metals selected from the group consisting of nickel, cobalt, iron, magnesium, copper, zinc, molybdenum, tungsten, silver, tin, antimony, and vanadium, wherein said support composition comprises zinc oxide, silica, and alumina; (b) particulating the resulting bimetallic promoter-support composition; (c) drying the bimetallic promoter containing particulate; (d) calcining the dried bimetallic promoter containing particulate of step (c); and thereafter (e) reducing the resulting calcined particulate of step (d) with a suitable reducing agent under suitable conditions to produce a particulate having the valence of the metals of said bimetallic promoter in a zero valence state such that the reduced valence bimetallic promoter containing composition will affect the removal of sulfur from a stream of cracked-gasoline or diesel fuel when said stream is contacted with same under desulfurization conditions.

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20030166465 Gyanesh Khare Sep 2003
US7427581 China Petroleum & Chemical Corporation Gyanesh P. Khare Sep 2008