Process Design of Continuous-Flow Pervaporation Separa- tion for Alcohol Dehydration

摘要

The separation characteristics of the PVA-CS (polyvinyl alcohol-chitosan) blended composite membrane for dehydration of ethanol-water mixture are examined. The relationships of flux and separation factor with the feed concentration and operation temperature are established. Using this correlated equation, the continuous-flow pervaporation process about 500 kilolitree/year dehydrated ethanol is designed.