Retention of volatiles in contact drying combined with membrane separation

Abstract

The combination of contact drying and membrane separation has been examined in an experimental study. The drying material consisted of porous particles wetted with a binary mixture. It is shown that selective removal of the less volatile component is possible by properly choosing the applied membrane. Important influences of the operation parameters on the drying rate and selectivity of the drying process are presented and explained. The advantages of the combined process compared to a conventional contact drying process are discussed.