RETENTION OF VOLATILES IN CONTACT DRYING COMBINED WITH MEMBRANE SEPARATION

The combination of contact drying and membrane separation has been exa mined in an experimental study. The drying material consisted of porou s particles wetted with a binary mixture. It is shown that selective r emoval of the less volatile component is possible by properly choosing the applied membrane. Important influences of the operation parameter s on the drying rate and selectivity of the drying process are present ed and explained. The advantages of the combined process compared to a conventional contact drying process are discussed.