Separation of alcohol from alcohol/ether/olefin/non-linear hydrocarbon mixtures using polyester or polyester copolymer membranes
US5294344A · kind A · utility
3Cited by
9References
8Claims
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Key dates
| Filing date | Nov 2, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Nov 2, 2012 |
Classification
- Technology area (CPC —)General
Abstract
Mixtures comprising alcohol/ether/non-linear hydrocarbon are separated using polyester or polyester polyimide copolymer membranes. The mixture is contacted under pervaporation conditions with the membrane and the alcohol selectively permeates through the membrane. In this way alcohol especially C.sub.1 -C.sub.10, preferably C.sub.1 -C.sub.4 alcohols can be effectively removed from the synthesis solutions used for the production of high value ethers such as methyl-tertiary butyl ether (MTBE) or tertiary-amyl methyl ether (TAME) used as octane enhancers in motor fuels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.