Process for producing methyl tertiary butyl ether

Details Process for producing methyl tertiary butyl ether Process for producing methyl tertiary butyl ether

1986-06-05

1987-05-12

Mars, Howard T.

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

Organic compounds

Oxygen containing

568699, C07C 4106, C07C 4138

Patent

active

046652370

ABSTRACT:
A process for producing methyl tertiary butyl ether is disclosed, comprising reacting isobutylene and methanol using a hydrocarbon mixture of 4 carbon atoms containing isobutylene and methanol as starting materials in a reaction zone containing an acidic ion exchange resin and distilling the resulting reaction mixture in a distillation column connected to the reaction zone to separate methyl tertiary butyl ether from the unreacted hydrocarbon mixture of 4 carbon atoms, wherein a mixture of the hydrocarbon mixture of 4 carbon atoms as a distillate from a top of the distillation column and methanol as a distillate by azeotropy is contacted with water in a second extraction step to wash and extract methanol with water, and the water containing the extracted methanol is then contacted with said hdyrocarbon mixture of 4 carbon atoms containing isobutylene which is fed to the reaction zone in a first extraction step in an upstream of the reaction zone to thereby transfer a part or a large portion of the methanol in the methanol-containing water into a hydrocarbon mixture phase by reverse extraction. By the process, methanol in the reaction mixture can be recovered simply and at low cost.

REFERENCES:
patent: 4219678 (1980-08-01), Obenaus et al.
Scheeline et al, "Methyl Tertiary-butyl Ether", SRI International, Process Economic Reviews, Report No. 78-1-3, Dec. 1978.

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