Decreasing Br-reactive contaminants in aromatic streams
US6781023B2 · kind B2 · utility
14Cited by
21References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G53/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Bromine reactive hydrocarbon contaminants are removed from aromatic streams by first providing an aromatic feedstream having a negligible diene level. The feedstream is contacted with an acid active catalyst composition under conditions sufficient to remove mono-olefins. An aromatic stream may be pretreated to remove dienes by contacting the stream with clay, hydrogenation or hydrotreating catalyst under conditions sufficient to substantially remove dienes but not mono-olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.