Graded catalyst bed for methyl mercaptan synthesis
US7645906B2 · kind B2 · utility
10Cited by
15References
15Claims
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Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Mar 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00805
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and graded catalyst bed for selectively producing methyl mercaptan from methanol. The methanol is reacted with hydrogen sulfide, in the presence of a graded catalyst bed containing at least three types of nickel or cobalt molybdenum alumina catalysts to convert the methanol to methyl mercaptan in one-pass. At least one of the hydrotreating catalysts can contain aluminium phosphate. Use of the graded catalyst bed prevents the formation of a hot spot within the graded catalyst bed. The methyl mercaptan having less than about 30 wt. % unreacted methanol contained therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.