Process for refining a heavy hydrocarbon feed using a selective deasphalting step
US9963643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2013 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Dec 3, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for refining a heavy hydrocarbon feed, comprising the following steps:a) a step for selective deasphalting of the heavy hydrocarbon feed by single-step liquid/liquid extraction in an extraction medium, said extraction being carried out using a mixture of at least one polar solvent and at least one apolar solvent, in order to obtain an asphalt phase and a deasphalted oil phase DAO, the proportions of said polar solvent and said apolar solvent in the solvent mixture being adjusted as a function of the properties of the feed and the desired asphalt yield, said deasphalting step being carried out under subcritical conditions for the solvent mixture;b) a step for hydrotreatment of at least a portion of the deasphalted oil phase DAO obtained from step a);c) optionally, a step for catalytic cracking of at least a portion of the effluent obtained from step b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.