Staged solvent assisted hydroprocessing and resid hydroconversion
AssigneeExxonMobil Research and Engineering Company
InventorsHimanshu Gupta, Stephen Harold BROWN, Federico BARRAI, Kirtan Kunjbihari TRIVEDI
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Abstract
Systems and methods are provided for processing a heavy oil feed, such as an atmospheric or vacuum resid, using a combination of solvent assisted hydroprocessing and slurry hydroconversion of a heavy oil feed. The systems and methods allow for conversion and desulfurization/denitrogenation of a feed to form fuels and gas oil (or lubricant base oil) boiling range fractions while reducing the portion of the teed that is exposed to the high severity conditions present in slurry hydroconversion.
Claims19
A method for processing a heavy oil feedstock, comprising:
- providing a heavy oil feedstock having a 10% distillation point of at least about 650° F. (343° C.);
- exposing the heavy oil feedstock to a catalyst in the presence of hydrogen and a solvent under first effective hydroprocessing conditions to form an effluent comprising at least a plurality of liquid products and a hydroprocessing bottoms product, the effective hydroprocessing conditions including a temperature of at least about 360° C. and a liquid hourly space velocity of the fraction of the combined feedstock boiling above 1050° F. (566°) of at least about 0.10 hr−1;
- exposing the hydroprocessing bottoms product to a catalyst in the presence of hydrogen under second effective slurry hydroconversion conditions to form a slurry hydroconversion effluent comprising at least a second plurality of liquid products and a bottoms product;
- and
- fractionating the first plurality of liquid products and the second plurality of liquid products.
A method for processing a heavy oil feedstock, comprising:
- providing a heavy oil feedstock having a 10% distillation point of at least about 650° F. (343° C.);
- exposing the heavy oil feedstock to a catalyst in the presence of hydrogen under first effective slurry hydroconversion conditions to for a slurry hydroconversion effluent comprising at least a plurality of liquid products and a bottoms product,
- wherein the hydrogen is provided by reforming of a reformable fuel, and wherein the hydrogen and the heavy oil feedstock are heated in a common heating zone.
Dependencies are inferred from the claim text.