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.

Claims

8 · 2 independent · depth 2

8 granted claims

›1.independentA method for separating alcohols from a feed mixture comprising alcohols/ethers/olefins/non-linear hydrocarbons, said method comprising contacting sai…+6

›7.independentA method for separating ether from a feed mixtures containing ether and hydrocarbons, said method comprising contacting said feed mixture with a polyi…

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4 codes

USPC · US Patent Classification

210/640568/699210/500.39210/649

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1.4 y

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Joseph W. Drodge

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