SU1674934A1 - Membrane unit - Google Patents

Abstract

The invention relates to membrane separation of solutions by reverse osmosis, ultra- and microfiltration, and can be used, for example, in the food industry to clarify and concentrate fruit juices. A membrane module can significantly increase separation performance. The membrane module contains a case inside which plates 5 of porous material, such as porous ceramics, are placed, assembled in a block with the creation of chambers 7 between the plates. The chambers 7 are sealed from the end faces of the block by means of sealing elements 8. And from the side of its side edges are made open. 5 il.

Description

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The invention relates to membrane separation of solutions by reverse osmosis, ultra- and microfiltration, and can be used, for example, in the food industry to clarify and concentrate fruit juices,

The purpose of the invention — an increase in the productivity of the membrane module — is achieved by reducing the hydraulic resistance of the porous block, which is the basis of the membrane module.

Fig, 1 shows a membrane module, a longitudinal section; in fig. 2 is a cross-section, bb in fig. 1; in fig. 3 - the node in FIG. 2: in FIG. 4 — node II in FIG. 11 n 5 embodiment of the plate with several rows of channels,

The membrane module consists of a hollow body 1 equipped with nozzles 2, 3, 4, respectively, for supplying a separable (initial) solution, withdrawing the permeate and withdrawing the concentrate.

Parallel plates 5 made of rigid porous material, such as porous ceramics, are assembled inside block 1 and assembled in block 6 with chambers 7 created between them using sealing elements 8 are sealed from the end faces of block 6 and made open and communicated with the cavity 9 to collect the permeate formed between the block b and the walls of the housing 1. At the location of the elements 8, the block 6 is surrounded by an annular sealing element 10, which in turn is oh Vacuum clamps 11, fixed to the pipes 2 and 4.

With the help of threaded elements 12, by tightening the clamps 11, reliable sealing of the seals is created. Inside the plates 5, longitudinally arranged through channels 13 are provided, provided with

active layer 14, which is a semipermeable membrane. The end surfaces of the plates 5 are made of coatings 15 and 16. designed to isolate

the internal drainage structure of the plates 5 from the concentrate solution to be separated. These coatings 15 and 16 can be made of an adhesive, for example, epoxy composition. In the plate 5, several rows of channels 13 can be made (FIG. 5).

The membrane module works as follows.

Subject to membrane separation

the solution under pressure through the pipe 2 is fed into the channels 13. The permeate solution passed through the active layer 14 enters the porous plates 5, from where it passes through the chambers 7 to the cavity 9 of it

collection and then withdrawn through pipe 3 to the outside. Concentrate is discharged through pipe 4.

Due to such an implementation of the membrane module, a significant

increase its performance due to the lower hydraulic resistance of the permeate in the porous block.

The module has a simple design and installation and dismantling.

Claims (1)

Invention Formula A membrane module consisting of a porous block with sealed ends, in which end-to-end parallel channels, on the walls of which a semipermeable membrane is placed, characterized in that. in order to increase the capacity of the module by reducing the hydraulic resistance of the porous block, the block is made in the form of flat elements arranged in parallel with the gap between their surfaces facing each other with the formation of permeate discharge chambers. 7- 9 f but / 12 Rig. ± A. , „  g jyjs- e,  5 ft Mf-0 € f .hri - -I sd ./,-,  With g., CHH ,, J. t -, - «-JJ | f .. rkr4b (- u .. A "-t. / - FIG 2 /four / J i- о t O-JB- C