Solids management in slurry hydroprocessing
US9284494B2 · kind B2 · utility
4Cited by
19References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 15, 2008 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Jan 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The recovery of solids, and particularly solid particulates used as catalysts in slurry hydroprocessing, from asphaltene containing hydrocarbons is improved by controlling asphaltene precipitation. The formation of agglomerates of the solid particulates, having an increased diameter, results in the presence of precipitated asphaltenes, possibly due to flocculation. Asphaltene precipitation is controlled by varying process parameters or introducing additional diluent or flush streams that change the polarity of an asphaltene containing liquid product recovered from an effluent of a slurry hydroprocessing reaction zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.