Separation of dimethyl ether from olefin stream made from oxygenate to olefin reaction process, by contacting oxygenate with a molecular sieve catalyst, drying olefin stream, and distilling dried olefin stream

摘要

Dimethyl ether is separated from an olefin stream made from an oxygenate to olefin reaction process, by contacting oxygenate with a molecular sieve catalyst to form the olefin stream comprising water, propylene, propane, and dimethyl ether; drying the olefin stream; and distilling the dried olefin stream to separate the dimethyl ether and propane from the propylene.