Process for separating methanol from the reaction products obtained in the etherification of C.sub.4 through C.sub.7 isoolefins with methanol
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United States of America Patent
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Oct 1, 1985
Grant Date -
N/A
app pub date -
Dec 20, 1982
filing date -
Dec 22, 1981
priority date (Note) -
Expired
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Abstract
The reaction product from etherification of C.sub.4 -C.sub.7 isoolefins with methanol in the presence of an acidic catalyst is washed with water in the presence of inert hydrocarbons thereby removing methanol and a part of the tertiary alcohol. The aqueous extract solution bottoms is distilled to separate methanol as overhead. Tertiary alcohols are withdrawn as a side stream from a tray of the distillation column with a high concentration thereof and fed into the washing column.
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