MEMBRANE-TYPE APPARATUS Russian patent published in 1995 - IPC

FIELD: chemical composition separation equipment. SUBSTANCE: apparatus has shell, frames mounted in shell one above the other, diffuser for introducing flow to be separated, converging tube for discharge of flow to be separated, collectors for discharging permeate and supplying permeate removal medium, supporting bars mounted on frames, fastening rolls and retaining plates. Semipermeable membranes retained on supporting bars are formed as curved hoses defining alternating Z-shaped profiles, which divide shell into a set of parallel flow supply cavities. Substrates and retaining plates are positioned within each hose volume containing a set of parallel permeate discharge cavities interconnected at zones adjacent to hose bending points. Hose bendings are made on retaining plates, which are pressed to supporting bars by fastening rolls positioned outside hose. Hose ends are fixed in collector sections for discharge of permeate and supplying of permeate removal medium. Retaining plates are made from porous material or continuous material with a system of channels, which interconnect adjacent permeate discharge cavities. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 cl, 3 dwg