Electrodialysis spacer

An electrodialysis and separator technology, applied in the field of water treatment, can solve the problems of leakage and leakage in the flow channel, and achieve the effects of good sealing, lower resistance and large Reynolds number.

Inactive Publication Date: 2013-02-06
HANGZHOU WATER TREATMENT TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the forms of these flow channels more or less have the disadvantages of internal leakage and electric leakage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to attached figure 1 , attached figure 2 As shown in the structure, an electrodialysis separator is made, and the plate frame for making the separator is made of a PP sheet with a thickness of 0.4mm. It is 400mm long and 200mm wide. The thickness of the elastic layer 7 on both sides is 0.15mm, and the total thickness is 0.70mm. mm; the elastic layer 7 is blended with 50% tetrafluoroethylene and 50% polyethylene. Including plate frame body 4, water distribution channel 3, liquid guide hole, plate core partition 5, half of the liquid guide holes are oval liquid guide holes 1, and the other half of the number of liquid guide holes are semi-elliptical liquid guide holes 2 is connected with the water distribution flow channel 3, alternately with each other, and penetrates with the inner cavity of the plate frame body 4, and there are half the number of oval liquid guide holes 1 at one end of the plate frame body 4, and the inner cavity of the plate frame body 4 i...

Embodiment 2

[0029] In a similar manner as in Example 1, the panel frame of the partition is made of a PP sheet with a thickness of 0.4mm, its length is 800mm, and its width is 400mm. The elastic layers shown on both sides have a thickness of 0.2mm and a total thickness of 0.80mm; the elastic layer is made of 40 mm. % tetrafluoroethylene blended with 60% polyethylene. The plate core spacer 5 adopts the PP elastic spacer specially used for the flow channel, which is 360×700mm and the thickness is 0.80mm. There are 50mm plate surfaces at both ends of the plate frame, and 3 oval liquid guide holes are opened on the plate surface. 1, 3 semi-elliptical liquid guide holes 2, the major axis of the elliptical hole is 40mm, the short axis is 20mm, the semi-elliptical liquid guide hole 2 at one end of the plate frame 4 is the water inlet channel, and the other end is semi-elliptical liquid guide hole 2 is the water outlet channel, and the semi-elliptical liquid guide holes 2 at each end are alternat...

Embodiment 3

[0032] Similar to the way of making the partition as in Example 1, the panel frame 4 for making the partition is made of a PP sheet with a thickness of 0.5mm, its length is 1600mm, and its width is 800mm. Both sides show that the thickness of the elastic layer is 0.2mm, and the total thickness is 0.80mm. ; The elastic layer is blended with 60% tetrafluoroethylene and 40% polyethylene. The board core partition adopts the special PP elastic partition for the flow channel, which is 640×1500mm and the thickness is 0.90mm. There are 50mm board surfaces at both ends of the board frame body 4, and 5 oval liquid guide holes are opened on the board surface. 1, 5 semi-elliptical liquid guide holes 2, the major axis of the elliptical hole is 50mm, and the short axis is 30mm. 2 is a water outlet channel, and the semi-elliptical liquid guide holes 2 at each end are alternately provided with hollow elliptical flow channels 8 connected to the plate core separator 5, and the major axis of eac...

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Abstract

The invention discloses the technical field of water treatment, and particularly relates to a spacer member in an electrodialysis device. An electrodialysis spacer comprises a board frame, a water distribution flow passage, liquid guide holes and a board-core grid, wherein half of the liquid guide holes are elliptical, and half of the liquid guide holes are semi-elliptical, connected with the water distribution flow passage and communicated with the inner cavity of the board frame; the elliptical liquid guide holes are arranged at one end of the board frame; and the board-core grid is distributed in the inner cavity of the board frame. The electrodialysis spacer has the advantages that the flow capacity can be improved and the resistance is reduced in the water flow process; and the electrodialysis spacer has the characteristics of being good in elasticity, resistant to strong acid, strong base and organic solvent, easy to seal and good in leak tightness.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and specifically refers to a separator part in an electrodialysis device. technical background [0002] The separators of existing electrodialyzers are generally of planar frame plate structure. The inner space of the frame is equipped with a partition net, and denser square or circular water channels are evenly distributed at both ends of the frame. Generally, the center-to-center distance between adjacent water channels is less than 50 mm. The water channel at one end of the frame is the water inlet channel, and the water channel at the other end is the water outlet channel. The water channel at each end is alternately provided with a number of water distribution channels connected with the intermediate net, and the water inlet channel and the water outlet channel on the opposite side are set. The water distribution channels are wrong. One side of the partition is covered with an anio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469
Inventor 金可勇胡鉴耿金水玉高从堦
Owner HANGZHOU WATER TREATMENT TECH DEV CENT
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