Process for refining a heavy hydrocarbon-containing feedstock implementing a selective cascade deasphalting
US10160924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2014 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | May 29, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for refining a heavy hydrocarbon feedstock containing a) at least two stages of deasphalting in series to separate at least one fraction of asphalt, at least one fraction of heavy deasphalted oil, and at least one fraction of light deasphalted oil, at least one of the stages of deasphalting by a mixture of at least one polar solvent and at least one apolar solvent, the stages of deasphalting being implemented under the subcritical conditions of the mixture of solvents, b) a stage of hydrotreatment of at least a part of the fraction of heavy deasphalted oil, in the presence of hydrogen, c) a stage of catalytic cracking of at least a part of the fraction of light deasphalted oil, alone or in a mixture with at least a part of the effluent originating from stage b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.