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Heterogeneous ion-exchange membrane reinforced by ion conductible screen cloth

An ion-exchange membrane and ion-conducting technology, which is applied in the field of heterogeneous ion-exchange membranes, can solve the problems of high membrane surface resistance, low ion exchange efficiency, and difficulty in balancing ion exchange efficiency and omentum strength.

Inactive Publication Date: 2006-04-26
ZHEJIANG OMEX ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the technical problems in the prior art that the membrane surface resistance of the heterogeneous ion exchange membrane caused by the inert reinforced mesh cloth is large, the power consumption is increased, the ion exchange efficiency is low, or the ion exchange efficiency and the strength of the mesh are difficult to be balanced. , provides a kind of heterogeneous ion film with reasonable design, which can reduce the surface resistance of the membrane, has high ion exchange efficiency, takes into account both the ion exchange efficiency and the strength of the mesh, and takes into account the ion exchange efficiency and strength of the mesh. exchange membrane

Method used

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  • Heterogeneous ion-exchange membrane reinforced by ion conductible screen cloth
  • Heterogeneous ion-exchange membrane reinforced by ion conductible screen cloth

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: As shown in Figure 1 and Figure 3, heterogeneous ion exchange membranes are divided into anion exchange membranes and cation exchange membranes, consisting of a membrane 1 and a reinforced mesh 2 embedded between the two membranes 1, the reinforced mesh Cloth 2 is composed of inert reinforced mesh with ion exchange groups after treatment.

[0020] The diaphragm is manufactured by known technology, and the ion exchange resin is coated on the inert mesh to make it have ion exchange groups, and then the treated reinforced mesh is embedded between the two diaphragms.

Embodiment 2

[0021] Embodiment 2: As shown in Figure 2 and Figure 4, the heterogeneous ion exchange membrane is divided into anion exchange membrane and cation exchange membrane, which is composed of a membrane 1 and a reinforced mesh 2 pressed on both surfaces of the membrane 1, and the reinforced mesh Consists of ion exchange fibers of different lengths.

[0022] The diaphragm is manufactured by known technology, the length ion exchange fiber is woven into an active mesh, and then the active reinforced mesh is laminated on both surfaces of the diaphragm.

Embodiment 3

[0023] Embodiment 3: As shown in Figure 2 and Figure 4, the heterogeneous ion exchange membrane is divided into an anion exchange membrane and a cation exchange membrane, which is composed of a membrane 1 and a reinforced mesh 2 pressed on both surfaces of the membrane 1, and the reinforced mesh Consists of modified inert mesh fabric bonded with ion exchange fibers of different lengths.

[0024] The diaphragm is manufactured by known technology, bonding ion exchange fibers of different lengths on the reinforced mesh, and then the modified reinforced mesh is pressed on one surface of the diaphragm, and the other surface of the diaphragm is laminated with inert reinforcement. net.

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Abstract

The invention relates to out-phase ion exchange membrane reinforced by conductive ion screen cloth comprises: a cation exchange membrane, an anion exchange membrane, at least one layer of reinforced screen cloth arranged on membrane surface or between membrane space. This invention overcomes problems in prior art, has reasonable design, reduces membrane surface resistance, and high ion exchange efficiency.

Description

technical field [0001] The invention relates to a heterogeneous ion exchange membrane reinforced by conductive ion mesh, which belongs to the field of membrane separation. [0002] technology field. Background technique [0003] Electrodialysis or Electrodemineralization (EDI) technology uses the selective permeability of anion and cation exchange membranes to anions and cations in solution under the action of a direct current electric field to achieve the removal or concentration of ions. Heterogeneous ion-exchange membranes are key materials used in electrodialysis and electro-demineralization (EDI) devices, and their basic performance requirements include good electrical conductivity, high ion-selective permeability, high mechanical strength, and low swelling rate. [0004] A typical preparation method of a heterogeneous membrane is to knead high molecular polymer and powdered ion exchange resin with a roller or extruder, and then pull a sheet to form a membrane. In ord...

Claims

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Application Information

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IPC IPC(8): B01D69/10B01D69/12
Inventor 仝志明李翔
Owner ZHEJIANG OMEX ENVIRONMENTAL ENG CO LTD
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