Mixture components separation and recovery process through evaporation.

摘要

A process is proposed for the separation and recovery of components of mixtures (11) having a miscibility gap, comprising organic compounds and water, in a pervaporation process (28/29 to 35) with the aid of membranes. In this process, the mixture (11) is first separated into an organically contaminated aqueous phase I (13) and a water- saturated organic phase II (14). Subsequently the organically contaminated aqueous phase Z on the one hand and the water-saturated organic phase on the other are subjected in parallel to different pervaporation processes (28/29 to 35), the resulting retentates being released on the one hand as water III and on the other hand as organic fluid IV. Subsequently the permeates resulting from the pervaporation processes (28, 29) are returned to the mixture (11) to be separated.