C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/648, 202/73
C07C 43/04 (2006.01) C07C 41/06 (2006.01) C07C 41/42 (2006.01)
Patent
CA 1151218
D 71,200-DTA-155-F A PROCESS FOR SEPARATING THE REACTION PRODUCTS OBTAINED FROM ETHERIFYING LOWER ISOOLEFINS WITH METHANOL (D 71,200-DTA-155-F) ABSTRACT A method for separating a mixture of reaction products pro- duced in the catalytic etherification of a lower isoolefin with methanol wherein said reaction product comprises a mix- ture of ether, methanol, unreacted hydrocarbon and tertiary alcohol which comprises adding water to said reaction pro- duct to form a hydrocarbon phase containing said ether and an aqueous phase containing methanol and a tertiary alco- hol, separating said hydrocarbon phase to recover a methyl- tertiary alkyl ether, introducing said alcohol-containing aqueous phase into a distillation column to separate a me- thanol fraction overhead, withdrawing a side stream rich in tertiary alcohol from said distillation column, stripping this side stream in a stripping column to separate a second methanol fraction overhead and a tertiary alcohol bottoms fraction and recycling the methanol overhead fraction from the stripping column to the upper part of the distillation column and recycling the overhead methanol fraction from the distillation column to the feed stream to said reactor. - I -
380500
Osterburg Gunter
Prezelj Milan
Putz Joachim E.
Edeleanu Gesellschaft M.b.h.
Smart & Biggar
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