MEMBRANE SEPARATION BY alcohol mixture pervaporation

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to membrane technologies, particularly, to making new membranes for spirit separation by pervaporation. New membrane is made from polybenzoxazinoimide with molecular weight of 50000 to 100000 Da, ;and represents nonporous dense polymer 15-25 mcm-thick film.Invention allows directed separation of spirit mixes with separation factor (up to 19000).;EFFECT: high thermal stability, long service life.;6 ex