Combination process for manufacturing ethylene, benzene and alkylated benzene
US6177600A · kind A · utility
28Cited by
16References
12Claims
0Family size
Inventor
Key dates
| Filing date | Dec 10, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Dec 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Gas and liquid products of an ethylene plant, steam cracking zone, are used for the coproduction of alkylated benzene. Dilute ethylene in typical concentrations of 7-20 mol percent is coproduced along with pure ethylene product. Impure benzene containing typically less than 8 wt % C6 and C7 non-aromatics is formed by hydratreating and fractionation of pyrolysis gasoline, rich in benzene and toluene, and also by hydrodealkylation of the toluene. The impure benzene reacts with dilute ethylene to form ethylbenzene and hydrogen rich vent gas. The impure benzene can be also a source for production of cumene, by reaction with propylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.