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US 10,703,998 B2Granted
Catalytic demetallization and gas phase oxidative desulfurization of residual oil
AssigneeSaudi Arabian Oil Company
InventorOmer Refa Koseoglu
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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 hydrodemetallization and then gas phase oxidative desulfurization. Additional, optional steps including hydrodesulfurization, and hydrocracking, may also be incorporated in to the integrated process.
Claims15
An integrated process for removing metals and sulfur from a residual oil hydrocarbon feedstock, consisting of:
- (i) subjecting said hydrocarbon feedstock to hydrometallization in a first vessel, in the presence of a hydrodemetallization catalyst, under hydrodemetallization conditions, to produce a hydrodemetallized product which comprises a first gas, a top fraction, and a bottom fraction;
- (ii) moving said bottom fraction to a second vessel, said second vessel containing an oxidative desulphurization (ODS) catalyst;
- (iii) contacting said bottom fraction and ODS catalyst with a gaseous oxidizing agent, to form SO2, a liquid fraction and a second gas in a gaseous ODS process;
- (iv) separating said second gas and said liquid fraction produced in (iii) from each other;
- (v) removing a portion of said second gas, leaving a remainder;
- (vi) recycling said remainder to said second vessel, and;
- (vii) removing said liquid fraction.
4 more elements
An integrated process for removing metals and sulfur from a residual oil hydrocarbon feedstock, consisting of:
- (i) subjecting said hydrocarbon feedstock to hydrometallization in a first vessel, in the presence of a hydrodemetallization catalyst, under hydrodemetallization conditions, to produce a hydrodemetallized product which comprises a first gas, a top fraction, and a bottom fraction;
- (ii) moving said bottom fraction to a second vessel, said second vessel containing an oxidative desulphurization (ODS) catalyst;
- (iii) contacting said bottom fraction and ODS catalyst with a gaseous oxidizing agent, to form SO2, a liquid fraction and a second gas in a gaseous ODS process;
- (iv) separating said second gas and said liquid fraction produced in (iii) from each other;
- (v) removing a portion of said second gas, leaving a remainder;
- (vi) recycling said remainder to said second vessel, and;
- (vii) removing said liquid fraction, and;
- (viii) subject said liquid fraction of (vii) to hydrocracking in the presence of hydrogen and a hydrocracking catalyst.
5 more elements
Dependencies are inferred from the claim text.