Process to prevent catalyst deactivation in activated slurry hydroprocessing
US5294329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Jun 2, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G49/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved catalytic slurry hydroprocess comprising a hydrogenation zone having a hydrogen partial pressure of at least about 100 psia characterized by active catalyst recycle accompanied by minimal catalyst deactivation from coking or asphaltene agglomeration in which the improvement comprises the steps of: PA1 (1) separating at least a portion of active catalyst from the liquid hydrogenation product eluted from the hydrogenation zone of said hydroprocess, and PA1 (2) recycling at least a portion of said separated active catalyst to said hydrogenation zone; wherein said steps are carried out while maintaining said active catalyst under conditions substantially the same as those encountered in said hydrogenation zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.