MEMBRANE-TYPE APPARATUS WITH JET FLOWS Russian patent published in 2005 - IPC

FIELD: separation, concentration and distilling of various solutions by reverse osmosis method and ultra-filtration.

SUBSTANCE: proposed membrane-type apparatus includes tubular membrane module made in form of porous body with semi-permeable membrane applied to inner surface, branch pipes for introducing starting solution and discharge of concentrate and filtrate. Arranged inside tubular membrane module coaxially relative to semi-permeable membrane are jet units. Each jet unit is made in form of cylinder whose end surfaces are tightly connected with disk on one side by means of flanges and base member and holder on other side. Said disk has holes for rods and holder is fitted with leaf-type valve. Corrugated reinforced membrane fitted inside cylinder possesses increased elastic deformation properties; it is made in form of sleeve whose open end part is placed between flange of cylinder and base member, thus forming hermetic joint; immovably connected to bottom by means of shaped washer adjoining bottom part of sleeve on inner side is pusher which is movable inside cylinder. Injectors mounted on side surface of base member are equidistant from each other and are directed to opposite sides so that escaping jets should be tangential relative to semi-permeable membrane. Distance between jet units is so selected that jet of starting solution escaping from injectors directed to one side of one jet unit should form vertical plane of contact with jets escaping from injectors directed to other side of other jet unit. Jet units are mounted stationary by means of rods secured in flanged joints and passed through holes in disks which are stationary connected to flanges of cylinders on side of pushers. Connected immovably to pusher rods are disks which have holes for rods connecting the disks of other jet units, thus forming immovable system; disks are so secured that each jet unit should perform similar motion.

EFFECT: increased productivity due to enhanced hydrodynamic action on flow being separated.

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