Process for removing isobutene from a C.sub.4 cut and producing

Details Process for removing isobutene from a C.sub.4 cut and producing Process for removing isobutene from a C.sub.4 cut and producing

1980-04-24

1982-04-13

Mars, Howard T.

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

Organic compounds

Oxygen containing

585800, 568699, C07C 4106, C07C 700

Patent

active

043249248

ABSTRACT:
Process for producing methyl tert-butyl ether (MTBE) by reacting methanol with the isobutene present in a C.sub.4 cut in a proportion from 10 to 60%, wherein said cut, admixed with methanol is contacted, in a first reaction zone, with an acid catalyst in the conditions of etherification of isobutene by methanol unit 93 to 98% of the isobutene has been converted, the reaction product is fractionated under at least 10 bars to a bottom fraction consisting essentially of MTBE and a top fraction which is contacted, in a second reaction zone, with an acid catalyst, under the conditions of etherification of isobutene by methanol, until at least 99% of the initial isobutene has been converted, the resulting product is washed with water and separated into a residual C.sub.4 cut which is discharged and an aqueous phase wherefrom methanol is recovered by distillation.

REFERENCES:
patent: 3726942 (1973-04-01), Louder
patent: 3979461 (1976-09-01), Anciallotte et al.
patent: 4144138 (1979-03-01), Rao et al.
patent: 4198530 (1980-04-01), Wentzheimer et al.
patent: 4219678 (1980-08-01), Obenaus et al.

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