Hydrodesulfurization process including product recycle
US4116819A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jun 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/107
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalytic asphaltene-containing oil hydrodesulfurization process employing a fixed catalyst bed comprising particles of supported Group VI and Group VIII metals, preferably together with a separate and downstream fixed catalyst bed comprising particles of Group VI and Group VIII metals together with a promoting amount of Group IV-B metal. The catalyst particles in both beds are in the form of elongated extrudates whose surface is provided with a plurality of alternating longitudinal grooves and protrusions. An advantageous mass velocity-related catalyst activity effect is achieved by recycling a portion of the desulfurized liquid product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.