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US 10,894,923 B2Granted
Integrated process for solvent deasphalting and gas phase oxidative desulfurization of residual oil
AssigneeSaudi Arabian Oil Company
InventorOmer Refa Koseoglu
Life of this patent
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Abstract
The invention is an integrated process for treating residual oil of a hydrocarbon feedstock. The oil is first subjected to solvent deasphalting then gas phase oxidative desulfurization. Additional, optional steps including hydrodesulfurization, and hydrocracking, may also be incorporated into the integrated process.
Claims14
An integrated process for removing metals and sulfur from a residual oil feedstock, consisting of:
- (i) deasphalting said residual oil feedstock in a first vessel, in the presence of a paraffinic solvent, to produce a gas, asphalt and deasphalted oil (residual DAO);
- (ii) separating said gas, asphalt and residual DAO from each other and also from said paraffinic solvent;
- (iii) moving said residual DAO to a second vessel containing an oxidative desulfurization (ODS) catalyst;
- (iv) contacting said residual DAO and ODS catalyst with a gaseous oxidizing agent at a temperature of from 300-600° C., to form SO2, a second gas, and a liquid in a gaseous ODS process to remove sulfur in said residual DAO;
- (v) separating the second gas and liquid produced in (iv) from each other;
- (vi) removing a portion of said gas of (v) from the total gas, leaving a remainder;
- and
- (vii) recycling said remainder to said second vessel.
5 more elements
An integrated process for removing metals and sulfur from a residual oil feedstock, consisting of:
- (i) deasphalting said residual oil feedstock in a first vessel, in the presence of a paraffinic solvent, to produce a gas, asphalt and residual deasphalted oil (residual DAO);
- (ii) separating said gas, asphalt and residual DAO from each other and also from said paraffinic solvent;
- (iii) moving said residual DAO to a second vessel containing an oxidative desulfurization (ODS) catalyst;
- (iv) contacting said residual DAO and ODS catalyst with a gaseous oxidizing agent at a temperature of from 300-600° C., to form SO2, a second gas, and a liquid in a gaseous ODS process to remove sulfur in said residual DAO;
- (v) separating the second gas and liquid produced in (iv) from each other;
- (vi) removing a portion of said gas of (v) from total gas, leaving a remainder;
- (vii) recycling said remainder to said second vessel, and
- (viii) hydrocracking said liquid in the presence of hydrogen and hydrocracking catalyst.
5 more elements
Dependencies are inferred from the claim text.