A process for treating mixtures of organic components, including azeotropic mixtures.
The process includes a gas- or liquid-phase membrane separation step in conjunction
with a dephlegmation step to treat at least a portion of the permeate vapor from
the pervaporation step. The process yields a membrane residue stream, a stream
enriched in the more volatile component as the overhead stream from the dephlegmator
and a condensate stream enriched in the less volatile component as a bottoms stream
from the dephlegmator. Any of these may be the principal product of the process.
