Process for preparing methyl tertiary-butyl ether

Details Process for preparing methyl tertiary-butyl ether Process for preparing methyl tertiary-butyl ether

1980-02-28

1983-09-13

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4100, C07C 4106

Patent

active

044044097

ABSTRACT:
A process for continuously preparing methyl tertiary-butyl ether with high yield involves reacting an isobutylene-containing/hydrocarbon and methanol by continuously passing the isobutylene and methanol, in a molar ratio of isobutylene to methanol of 1 to 0.6-1.4 at a temperature of 60.degree.-100.degree. C. at a liquid space velocity of 0.1-50 l/hour and at a pressure of 1-50 atmospheres, through a first reactor filled with strong acid type cation exchange resin particles having an average particle diameter of 0.2-10 mm; dividing the mixture of the reaction products in two streams, the flow rate of the first stream being 3-15 times the flow rate of the second stream; recycling the first stream to the first reactor; passing the second stream, at a temperature of 20.degree.-55.degree. C. at a liquid space velocity of 0.1-50 l/hour and at a pressure of 1-50 atmospheres, through a second reactor filled with strong acid type cation exchange resin particles having an average particle diameter of 0.2-10 mm; passing the stream from the second reactor through a fixed bed filled with a water-insoluble solid particulate acid neutralizing agent having an average particle diameter of 0.1-10 mm at a temperature of about 0.degree.-55.degree. C.; passing the resulting reaction mixture into a flashing tower whereby the unreacted hydrocarbon is removed; and recovering a mixture containing MTBE from the bottom of the flashing tower.

REFERENCES:
patent: 4182913 (1980-01-01), Takezono et al.
patent: 4267393 (1981-05-01), Torck et al.

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