MEMBRANE MEMBER Russian patent published in 1995 - IPC

FIELD: solution separation. SUBSTANCE: membrane member to separate solutions has packages facing one another with substrates of the membranes assembled into a box open at solution input and output. The membranes have a support skeleton in the form of perforated or porous material installed between them. The support skeleton is corrugated with permanent bent radius for corrugations. A grid is installed on the box at solution inlet. Edges of grid holes are folded inward passages formed by corrugations in adjacent packages. The grid may be installed also at the side of solution outlet, in so doing edges of grid holes are folded inward passages at an angle to their longitudinal axes. The holes in the grids are made with increasing dimensions in the direction from box center to its periphery. Preferably, holes in the grids has similar dimensions at solution inlet and output. The support skeleton is hollow of two perforated plates with gaskets between them along perimeter. EFFECT: good separation parameters. 9 cl, 10 deg