Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker
US6194626A · kind A · utility
1Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Dec 6, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cyclic process for the purification of a diolefin hydrocarbon stream produced in a naphtha steam cracker to produce a high quality diolefin hydrocarbon stream having extremely low levels of acetylene over an extended period because of the ability to readily cyclically regenerate catalyst contained in an off-line selective hydrogenation reaction zone. The spent or partially spent catalyst is contacted with a stream containing naphtha and hydrogen to restore at least a portion of the fresh catalyst activity by the extraction of polymer compounds therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.