Multiple stepped process for the demetallization and desulfuration of heavy oil feedstocks
US4752376A · kind A · utility
11Cited by
6References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 8, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Jul 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/0463
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for treating heavy crude oil feedstocks to reduce the asphaltenes, metals and sulfur content thereof while maintaining a high conversion thereof comprising: subjecting the feedstock to an asphaltene separation stage and thereafter subjecting the deasphaltene crude to a first hydrotreatment stage employing a first macroporous catalyst so as to produce an intermediate partially demetallized and desulfurized product and thereafter treating said intermediate product in a second hydrotreatment stage using a microporous catalyst wherein the microporous catalyst exhibits extended life period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.