Mixed phase ethylation process for producing ethylbenzene
US5977423A · kind A · utility
12Cited by
3References
8Claims
0Family size
Inventor
Key dates
| Filing date | Oct 20, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Oct 20, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ethylbenzene production method is applied using a mixed phase ethylation of dilute ethylene with impure benzene. The benzene feed contains over 75% by weight benzene, with the balance being non-aromatic C.sub.6 to C.sub.7 hydrocarbons, including cyclohexane. The production method involves separating the benzene vapor from the hydrogen/methane rich vent gas by condensing the benzene at a temperature below about 5.5.degree. C., the normal freezing point of benzene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.