Process for sulfurization of catalysts for hydrotreatment
US7513990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Apr 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/705
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for sulfurization of catalysts for hydrotreatment, in particular the catalysts for hydrotreating refractory oxides by sulfurization, in which said catalysts are subjected to a sulfurization stage under a gas atmosphere that contains hydrogen sulfide (H2S), hydrogen (H2), and optionally a cover gas for dilution and in which the H2S/H2 molar ratio is more than 4 and the H2S partial pressure is at least equal to 1 kPa.Said sulfurization stage can be carried out in the hydrotreatment unit (sulfurization in situ) or, prior to the charging of the catalyst, in the hydrotreatment unit (sulfurization ex situ) and is generally carried out at a temperature of less than 600° C., preferably less than 500° C.The invention also relates to the catalysts that are sulfurized by said sulfurization process and their use for hydrorefining and/or hydroconversion/hydrocracking of hydrocarbon feedstocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.