Process for converting heavy petroleum fractions in an ebullated bed, with addition of a pre-conditioned catalyst
US6187174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jan 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G49/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for converting a heavy hydrocarbon fraction comprises a step a) for treating a hydrocarbon feed in a hydroconversion section in the presence of hydrogen, the section comprising at least one three-phase reactor containing at least one ebullated bed of hydroconversion catalyst operating in riser mode for liquid and for gas, said reactor comprising at least one means for extracting used catalyst from said reactor and at least one means for adding fresh catalyst to said reactor, b) a step for treating fresh catalyst and conditioning the catalyst using a process leading to a gain in the activity of the catalyst during treatment of the feed in said conversion reactor. This process for conditioning the catalyst before adding it to the reactor can comprise a step for impregnating the catalyst with a chemical substance, or a complete sulphurisation step, or a step for adding an additive mixed with the fresh catalyst which is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.