Processes for upgrading hydrocarbon feedstock
AssigneeSaudi Arabian Oil Company
InventorsKi-Hyouk Choi, Young-Kyoung Ahn, Mamdouh Abdoun Al-Harbi
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Abstract
A process for upgrading a hydrocarbon feedstock may include introducing a hydrocarbon feedstock into a hydrocracking unit to obtain a hydrocracked product, introducing the hydrocracked product to a fractionation unit to obtain distillates and unconverted oil, the unconverted oil having a boiling point greater than 375° C., introducing the unconverted oil and supercritical water to a supercritical water unit to obtain a treated product, wherein the supercritical water has a pressure greater than 21 MPa and a temperature above 374° C., and separating the treated product to obtain a purified product and a concentrated product, wherein the concentrated product includes heavy polynuclear aromatics (HPNA).
Claims18
A process for upgrading a hydrocarbon feedstock, the process comprising:
- introducing a hydrocarbon feedstock into a hydrocracking unit to obtain a hydrocracked product;
- introducing the hydrocracked product to a fractionation unit to obtain distillates and unconverted oil, the unconverted oil having a boiling point greater than 375° C.;
- introducing the unconverted oil and supercritical water to a supercritical water unit to obtain a treated product, wherein the supercritical water has a pressure greater than 21 MPa and a temperature above 374° C. and a ratio of a flow rate of the supercritical water to a flow rate of the unconverted oil is from 20:1 to greater than 10:1 when the unconverted oil and the supercritical water are introduced to the supercritical water unit;
- and
- separating the treated product to obtain purified product and a concentrated product, wherein the concentrated product comprises heavy polynuclear aromatics (HPNA).
Dependencies are inferred from the claim text.