Oxidizing heat treatment passivation of sulphide hydrotreatment catalyst
US7501376B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/705
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a process of ex-situ oxidizing passivation of catalysts for hydroconversion of hydrocarbons and especially of hydrotreating, in their sulfide state, process in which the sulfurized catalyst is brought into contact with an oxidizing gas flow that can be dry or wet, during heat treatment at more than 50° C. This invention, for passivation of sulfide phases, can be equally well implemented for a process that takes place in a fixed bed or a fluidized bed, for example a moving bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.