Continuous process for dehydration of tertiary butyl alcohol
US4155945A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1978 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Jul 24, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tertiary butyl alcohol, containing some water, is dehydrated to isobutylene in the presence of a catalyst and a hydrocarbon which forms an azeotrope with water. Isobutylene, water, and the hydrocarbon are passed through a condenser to a phase separator from which isobutylene is recovered, preferably as a vapor phase, hydrocarbon is recycled to the dehydration zone, and a water phase removed from the process. The alcohol feed point location is the phase separator. A significant fraction of water contained in the tertiary butyl alcohol feed can be removed inexpensively, by phase separation, in the separator, to minimize the amount of water entering the dehydration zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.