Back to results
US 2003/0166464 A1Published application
Desulfurization and novel compositions for same
AssigneeConocoPhillips Company
InventorsAshley G. Price, Jason J. Gislason, Glenn W. Dodwelll, Robert W. Morton, George D. Parks
Life of this patent
Estimating the term…
Abstract
A composition comprising manganese oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.
Claims115
A composition comprising:
- (a) manganese oxide;
- and
- (b) a promoter
- wherein at least a portion of said promoter is present as a reduced valence promoter.
1 more element
A composition comprising:
- (a) manganese oxide;
- (b) a silicon-containing material;
- (c) an aluminum-containing material selected from the group consisting of alumina, aluminate, and combinations thereof;
- and
- (d) a promoter
- wherein at least a portion of said promoter is present as a reduced valence promoter.
3 more elements
A process for the production of a composition comprising:
- (a) admixing:
- 1) a liquid, 2) manganese oxide, 3) a silicon-containing material, 4) alumina, and 5) a promoter so as to form a mixture thereof;
- (b) drying said mixture so as to form a dried mixture;
- (c) calcining said dried mixture so as to form a calcined mixture;
- (d) reducing said calcined mixture with a suitable reducing agent under suitable conditions to produce a composition having a reduced valence promoter content therein, and
- (e) recovering said composition.
3 more elements
A process for the production of a composition comprising:
- (a) admixing:
- 1) a liquid, 2) manganese oxide, 3) a silicon-containing material, and 4) alumina so as to form a mixture thereof;
- (b) drying said mixture so as to form a dried mixture;
- (c) calcining said dried mixture so as to form a calcined mixture;
- (d) incorporating a promoter onto or into said calcined mixture so as to form a promoted mixture;
- (e) drying said promoted mixture so as to form a dried promoted mixture;
- (f) calcining said dried promoted mixture so as to form a calcined promoted mixture;
- (g) reducing said calcined promoted mixture with a suitable reducing agent under suitable conditions to produce a composition having a reduced valence promoter content therein;
- and
- (h) recovering said composition.
7 more elements
A process for the removal of sulfur from a hydrocarbon stream comprising:
- (a) contacting said hydrocarbon stream with a composition comprising manganese oxide and a promoter wherein at least a portion of said promoter is present as a reduced valence promoter and in an amount which will effect the removal of sulfur from said hydrocarbon stream in a desulfurization zone under conditions such that there is formed a desulfurized hydrocarbon stream and a sulfurized composition;
- (b) separating said desulfurized hydrocarbon stream from said sulfurized composition thereby forming a separated desulfurized hydrocarbon stream and a separated sulfurized composition;
- (c) regenerating at least a portion of said separated sulfurized composition in a regeneration zone so as to remove at least a portion of the sulfur contained therein W and/or thereon thereby forming a regenerated composition;
- (d) reducing said regenerated composition in an activation zone so as to provide a reduced composition having a reduced valence promoter content therein which will effect the removal of sulfur from a hydrocarbon stream when contacted with same;
- and thereafter
- (e) returning at least a portion of said reduced composition to said desulfurization zone.
3 more elements
A process for the removal of sulfur from a hydrocarbon stream comprising:
- (a) contacting said hydrocarbon stream with a composition comprising manganese oxide, a silicon-containing material, an aluminum-containing material selected from the group consisting of alumina, aluminate, and combinations thereof, and a promoter wherein at least a portion of said promoter is present as a reduced valence promoter and in an amount which will effect the removal of sulfur from said hydrocarbon stream in a desulfurization zone under conditions such that there is formed a desulfurized hydrocarbon stream and a sulfurized composition;
- (b) separating said desulfurized hydrocarbon stream from said sulfurized composition thereby forming a separated desulfurized hydrocarbon stream and a separated sulfurized composition;
- (c) regenerating at least a portion of said separated sulfurized composition in a regeneration zone so as to remove at least a portion of the sulfur contained therein and/or thereon thereby forming a regenerated composition;
- (d) reducing said regenerated composition in an activation zone so as to provide a reduced composition having a reduced valence promoter content therein which will effect the removal of sulfur from a hydrocarbon stream when contacted with same;
- and thereafter
- (e) returning at least a portion of said reduced composition to said desulfurization zone.
3 more elements
Dependencies are inferred from the claim text.