Dual bed process using two different catalysts for selective hydrogenation of acetylene and dienes
US7038097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2003 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Aug 25, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
It has been discovered that a dual bed process using two different catalysts for the selective hydrogenation of acetylene and/or methyl acetylene (MA) and/or propadiene (PD) in a light olefin-rich feedstream can be accomplished with less selectivity to making oligomers (green oil) as compared with existing commercial technologies, if a low oligomers selectivity catalyst is used first in the process. A palladium catalyst may be used as a second, sequential catalyst to further hydrogenate acetylene and/or MAPD while consuming at least a portion of the balance of the hydrogen present. The first catalyst should be different from the second catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.