Process for the purification of an ether comprising two distilla

Details Process for the purification of an ether comprising two distilla Process for the purification of an ether comprising two distilla

1995-05-04

1997-10-21

Cintins, Marianne M.

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

Organic compounds

Oxygen containing

568697, C07C 4300, C07C 4100

Patent

active

056798725

ABSTRACT:
A process for the separation of a mixture of an ether, an alcohol and of hydrocarbons is described in which the mixture to be separated is introduced into a first distillation column from which almost all of the hydrocarbons are recovered overhead and the purified ether is recovered from the bottom; at least one phase is extracted as a side stream from the first distillation column and sent to a second distillation column from which the alcohol is recovered from the bottom and a mixture of alcohol, ether and hydrocarbons is recovered overhead and recycled to the first distillation column. This process is of particular use in separating mixtures of ethyl tertio-butyl ether (ETBE), ethanol and C.sub.4 hydrocarbons.

REFERENCES:
patent: 5158652 (1992-10-01), Pucci et al.
patent: 5250156 (1993-10-01), Pucci et al.
patent: 5348624 (1994-09-01), Pucci et al.

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