RU2001664C1 - Membrane apparatus - Google Patents

Abstract

Usage: for the separation of liquid and gas mixtures using semipermeable membranes in the chemical microbiological, food, medical and other industries. SUMMARY OF THE INVENTION In a case with caps with fittings for the input and output of the mixture to be separated, a membrane element is arranged in the form of a hollow screw made of a porous material 3 glfs, 1 silt.

Description

3

I AM

IS

The invention relates to the purification of liquids and gases, in particular to the separation of liquid and gas mixtures using semipermeable membranes, and can be used in the chemical, microbiological, food, medical and other industries for micro and ultrafiltration processes

Apparatuses are known consisting of a housing and a cover with fittings for the input and output of a separable mixture located in the housing of a package of flat filter elements with flows and gaskets, as well as a central manifold for draining the permeate.

The disadvantage of this apparatus is the impossibility of creating tangential flows relative to the surface of the filter elements, which is associated with the formation of stagnant zones, the accumulation of precipitation in them and a decrease in productivity.

Closest to the proposed one is an apparatus consisting of a housing and covers with inlets and outlets for a separable mixture, a packet of flat filter elements with flows located in it, a central collector for draining permeate, filter elements made in the form of disks with two sector openings input and output, separated by a partition protruding above both planes of the disk filter elements, a packet of filter elements divided into separate blocks by intermediate plates with one sect a hole located coaxially with the sector output hole in the filter element adjacent to the lower plane of the intermediate plate, and with the sector input hole in the filter element adjacent to the upper plane of the intermediate plate.

The proposed apparatus is shown in the drawing.

The apparatus consists of a housing 1, two end caps 2 with a sealing unit 3, made in the form of a rubber ring, a membrane element 4, which is a hollow screw with a drainage internal cavity, a central manifold 5, ribs-disks 6 with an outer surface in the form of a membrane 14 .

At the ends of the central manifold 5, the sealing units 7 and 8 are made in the form of rubber rings. The end caps 2 comprise a nozzle 9 and 10 for supplying the initial mixture and for withdrawing the concentrate, respectively, as well as a nozzle 11 and 12 for conveying the permeate. The covers are fixed to the housing

1 by means of segment inserts 13, or rings, or a threaded connection.

The device operates as follows. The separated mixture is fed into the apparatus.

through the nozzle 9, it enters the upper plane (membrane) of the rib-disk 6 of the membrane element 4 and then moves by a helical flow along the channel located between the planes (membranes)

rib discs are collected in the output manifold and discharged from the apparatus through the nozzle 10 in the form of a concentrate. In order to eliminate the bypass flow of the separable mixture through the gaps between the housing 1

and with the edges of the rib discs 6, a sleeve 15 can be put on the edge of the latter (shown conditionally).

The permeate obtained on the membrane element 4 is collected in the central manifold 5 and is removed from the apparatus through nozzles 11 and 12.

Structurally, both the apparatus and the membrane element can be made in various ways depending on the purpose. For example, when the device is in deadlock mode, i.e. without withdrawal of the concentrate, it is advisable to use a housing with one lid and a blank bottom. At the same time, a cap is put on the end of the central manifold 5 facing the bottom. In one apparatus several coaxially arranged elements connected by bushings can be used. The membrane element can be made in the form of a single or multi-auger screw with an intermittent rib-disk, with a variable pitch of the rib-disks and in other variants, as well as with filling the internal cavity with sorbents, catalysts.

ion exchange, bactericidal and other materials. As the body of the membrane element, porous ceramics, graphite, metals, fibrous, polymer, natural and others can be used.

types of materials both with an additional supporting frame, and without it. The membrane element can be used as a volumetric or surface filter, as well as applied to the outer surface

ribs-disks of an additional (rigidly fixed or dynamic) membrane in the form of auxiliary filtered layers by spraying, polymerization, grafting, alluvium and other methods.

(56) Copyright certificate of the USSR Ns 678742, cl. B 01 D 63/08, 1978.

USSR author's certificate N 1637105, cl. B 01 D 63/08, 1991.

Claims (4)

1. A MEMBRANE APPARATUS for separating mixtures, comprising a housing and covers with inlets and outlets for a separable mixture, a membrane element located inside it, a central manifold for draining permeate and sealing units, characterized in that the membrane element is made in the form of a hollow screw made of porous material. 0 2. The apparatus according to claim 1, characterized in that it is provided with a sorbent or catalyst located in the cavity of the screw. 3. The apparatus according to claim 1, characterized in that the screw is made with a variable pitch, and its edge is provided with a cuff that fits snugly against the wall of the housing. 4. The device according to claim 1. characterized in that. that the screw is equipped with a dynamic membrane deposited on the outer surface. thirteen R0