Process for onstream regeneration of a hydrodesulfurization catalyst
US3968028A · kind A · utility
7Cited by
3References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 28, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Apr 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/107
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An asphaltene-containing oil hydrodesulfurization process employing stages in series with an interstage flashing step. The second stage catalyst comprises Group VI and Group VIII metals together with a promoting amount of Group IV-B metal. The coke level on the second stage catalyst is reduced by intermittent increase and decrease of the hydrogen pressure in the second stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.