Process for the production of methyl tert.-alkyl ethers

Details Process for the production of methyl tert.-alkyl ethers Process for the production of methyl tert.-alkyl ethers

1988-06-29

1989-10-24

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07L 4106

Patent

active

048763942

ABSTRACT:
In the production of methyl tert.-alkyl ethers by the reaction of methanol with isoalkylenes, the formation of dimethyl ether as an undesirable reaction by-product is reduced by recycling dimethyl ether to the reactor, advantageously in amounts sufficient to establish an equilibrium between the amount of dimethyl ether imparted to the reactor by way of recycle and the amount of dimethyl ether leaving the reactor as a portion of the reaction product whereby the formation of dimethyl ether in the reactor is essentially nil. In the present invention the essential recycle of dimethyl ether is accomplished by providing an adsorption capacity for dimethyl ether in the adsorption unit for recovering unreacted methanol and recycling dimethyl ether in combination with recycled methanol to the reactor as an effluent from the methanol adsorption unit during regeneration with isobutylene-containing C.sub.4 hydrocarbon feedstock.

REFERENCES:
patent: 4447653 (1984-05-01), Vora

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