method of siolamento methyl tertiary butyl ether from the reaction products of methanol with a hydrocarbon fraction containing the isobutene c4

摘要

Process for isolating methyl tert-butyl ether contained in the reaction product of methanol with a C4 hydrocarbon cut containing isobutene, comprising fractionating said reaction product by introducing it at an intermediate point of a distillation zone, recovering methyl tert-butyl ether at the bottom thereof and, at the top thereof, a mixture of C4 hydrocarbons with methanol which is washed with water and condensed and wherefrom is separated a condensed C4 hydrocarbon fraction, a portion of which is fed back as reflux to the top of the distillation zone and another portion discharged, and separating the remaining water-methanol mixture by distillation.