Process for the preparation of methyl tert-butyl ether

Details Process for the preparation of methyl tert-butyl ether Process for the preparation of methyl tert-butyl ether

1975-05-21

1976-09-07

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260666R, 260677A, C07C 4106, C07C 4110

Patent

active

039794610

ABSTRACT:
Methyl tert-butyl ether is prepared, and a stream of hydrocarbons containing isobutylene is freed therefrom, by reacting the isobutylene with methanol in a two stage process wherein, in the first stage, a stream of hydrocarbons containing isobutylene and methanol is fed to a primary reaction zone where the isobutylene and methanol partially react in the temperature range of from 50.degree. to 90.degree.C and at a pressure of from 10 to 30 atmospheres in the presence of a catalyst to form methyl tert-butyl ether which is separated by distillation from the residue of isobutylene and methanol and all other hydrocarbons in the feed stream, and, in a second stage, the residue of isobutylene and methanol and other hydrocarbons is fed to a secondary reaction zone where the residue of isobutylene and methanol react in the vapor phase, at a temperature in the range of 60.degree. to 100.degree.C and a pressure of from 15 to 40 atmospheres in the presence of a catalyst consisting of an acid ion exchange resin, to form the balance of methyl tert-butyl ether which is recovered by distillation to leave a balance of other hydrocarbons practically free from isobutylene.

REFERENCES:
patent: 1968601 (1934-07-01), Edlund et al.
patent: 2480940 (1949-09-01), Leam et al.
patent: 3119766 (1964-01-01), Voltz et al.
patent: 3846088 (1974-11-01), Brown et al.

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