Two-step process for sulfiding a catalyst containing an S-containing additive
US6492296B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Apr 10, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/188
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is contacted in two steps with hydrogen and a sulfur-containing compound in the gaseous phase, with the first step being performed at a temperature which is lower than that of the second step. Catalysts sulfided by the process according to the invention show a higher activity than the same catalysts which have been sulfided in a one-step process. It is preferred to carry out the process according to the invention ex situ, where it solves the problem of difficult start-up and the formation of undesirable side products in the hydrotreating unit. The S-containing organic additive preferably is a mercapto-compound, more preferably a mercaptocarboxylic acid represented by the general formula HS—R1-COOR, wherein R1 stands for a divalent hydrocarbon group with 1— about 10 carbon atoms and R stands for a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a linear or branched alkyl group having 1 to about 1…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.