KR101131201B1 - Gasket assembly for electrodeionization - Google Patents

Abstract

Improves the structure of the inner gasket to reduce the cross section of the channel, increases the contact time between the water and the ion exchange resin, and improves ion exchange performance through the independent arrangement of the ion exchange resin inside the gasket. A gasket assembly is disclosed. The gasket assembly for electric deionization of the present invention includes a gasket body in which an inlet and an outlet of water are formed, and an intestine or zigzag shape formed in the gasket body and between the inlet and the outlet. A flow passage forming portion having a flow passage and filled with ion exchange material on the flow passage, at least one flow passage forming portion for dividing the flow passage into a plurality of regions, and a separation member having at least one through hole through which water flows; It may be provided in the separation member to cover the shielding member for blocking the movement of the ion exchange material between the different flow path region with respect to the separation member.

ELECTRODEIONIZATION, Gasket, Ion Exchange Resin, Mesh (MESH), Intestine (INTESTINE)

Description

Gasket assembly for electric deionization {GASKET ASSEMBLY FOR ELECTRODEIONIZATION}

The present invention relates to an electrodeionization process, and more particularly, to a gasket assembly for use in an electrodeionization apparatus for an electrodeionization process.

In general, an electrodeionization (EDI) process is an ultrapure water production process that removes ions by applying a current to a gasket filled with an ion exchange membrane and an ion exchange resin, and performs ion exchange performance of the ion exchange membrane and adsorption and desorption of the ion exchange resin. Ion removal and filled resin through has the advantage of reducing energy consumption by smoothing the current transfer.

An electrical deionization device for such an electrical deionization process includes a gasket. In the conventional electrodeionization gasket, a flow path is formed so that water flows therein, and the flow path is filled with ion exchange resin. Here, the ion exchange resin includes a cation exchange resin capable of cation exchange and an anion exchange resin capable of anion exchange. However, the conventional electrical deionization gasket has a disadvantage that the structure of the flow path formed in the gasket is simple, so that the dead space of the flow path is wide, and the contact time between the water and the ion exchange resin is short, thereby deteriorating ion exchange performance. .

On the other hand, US Patent No. 6,241,867 B1 has an intestine shape of the flow path in the gasket to reduce the cross section of the flow path and increase the contact time between the water and the ion exchange resin to further improve the ion exchange performance gaskets Is disclosed. However, the disclosed conventional electrodeionization gasket does not have a special separation structure between ion exchange resins, so that the ion exchange efficiency decreases due to mixing of different ion exchange resins.

Meanwhile, US Pat. No. 6,248,226 B1 discloses an electric deionization gasket having a separator having a through hole on an inner flow path of a gasket, so that different ion exchange resins can be filled in an unmixed state by the separator. . However, in the case of the conventional gasket for electric deionization, the size of the through hole must be smaller than the particle diameter of the ion exchange resin, thereby inhibiting the flow of water, and also preventing the flow of water by blocking the through hole. there is a problem.

The present invention has been made to solve the above problems, by improving the structure of the inner gasket to reduce the cross section of the flow path, increase the contact time between the water and the ion exchange resin and at the same time of the ion exchange resin inside the gasket It is an object of the present invention to provide a gasket assembly for electric deionization that improves ion exchange performance through an independent arrangement.

Another object of the present invention is to prevent the ion exchange resin from blocking the through-holes of the separating member that divides the flow path into a plurality of areas so that the ion-exchange resin moves to the other flow path area through the through-holes without inhibiting the flow of water. It is to provide a gasket assembly for the electrical deionization that can be blocked.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

Gasket assembly for an electric deionization according to an embodiment of the present invention for achieving the above object, the gasket body is formed in the inlet and outlet of water, the gasket body is formed in the inlet and the outlet At least one flow path forming unit having an intestine or zigzag-shaped flow path therebetween and filled with ion exchange material on the flow path, and at least one flow path forming unit for partitioning the flow path into a plurality of regions, A separation member having at least one through hole formed therethrough, and a shielding member provided at the separation member so as to cover the through hole and blocking movement of the ion exchange material between different flow path regions bordering the separation member. can do.

Here, the shielding member is preferably a mesh (mesh), such as a mesh fabric.

The diameter of the mesh hole formed in the mesh may be smaller than the diameter of the ion exchange material, and the diameter of the through hole may be larger than the diameter of the ion exchange material.

The ion exchange material is preferably an ion exchange resin.

The ion exchange resin may be filled with a cation exchange resin capable of cation exchange, an anion exchange resin capable of anion exchange, and a mixed resin in which the cation exchange resin and the anion exchange resin are mixed.

Each of the flow path regions partitioned by the separation member may be filled with different ion exchange resins.

Here, it is preferable that the mixed resin is filled in the flow path region adjacent to the outlet side among the plurality of flow path regions partitioned by the separating member.

Preferably, the separating member is alternately positioned left and right at a boundary portion of the flow path partitioned into a plurality of regions.

Specific details of other embodiments are included in the detailed description and the drawings.

In the gasket assembly of the present invention as described above, an intestine or zigzag-shaped flow path is formed in the gasket to reduce the cross section of the flow path and increase the contact time between the water and the ion exchange material. Improved exchange performance.

In addition, by separating the flow path into a plurality of independent regions through the separating member, it is possible to independently fill different flow paths in each flow path region, and to improve the ion exchange performance by preventing mixing between different ion exchange resins. In addition, since the ion exchange resin can be filled in various ratios, the resulting ion exchange performance can be confirmed.

In addition, the mesh is provided to cover the through-hole formed in the separation member, by forming the diameter of the mesh hole formed in the mesh smaller than the diameter of the ion exchange resin and the diameter of the through-hole larger than the diameter of the ion exchange resin, It is possible to prevent the ion exchange resin from moving through the through hole to another flow passage area without inhibiting the flow of water by preventing the blocking of the through hole.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, with reference to the accompanying drawings will be described in detail a gasket assembly for an electric deionization according to a preferred embodiment of the present invention. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

1 is a perspective view schematically showing an electrical deionization gasket assembly according to an embodiment of the present invention, FIG. 2 is an enlarged view of a portion A of FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2. 4 and 5 are exemplary views illustrating a state of movement of water and ion exchange resins in part A of FIG. 1, and FIG. 6 is an enlarged view of part B of FIG. 1.

As shown in Figures 1 to 6, the gasket assembly for an electric deionization according to an embodiment of the present invention gasket body 10, the flow path forming portion 20, the separating member 30 and the shielding member 40 And the like.

The gasket assembly for electric deionization of the present invention is an electrodeionization apparatus (not shown) that performs an electrodeionization (EDI) process for the production of ultrapure water or removal of ionic substances in low concentration influent. Used.

The electrodeionization process has been carried out by Milipore in 1987 for the first time when an ionization deionization device called Ionpure CDI was commercialized. It uses the principle of alternating action. Since the electric deionization apparatus for such an electrodeionization process can be understood by a known technique, a detailed description thereof will be omitted.

The gasket body 10 may have various shapes having a predetermined area, for example, a quadrangular shape, such that a flow path forming portion 20 to be described later is formed therein, and may be formed by stacking a multilayer membrane film.

The gasket body 10 may be formed with an inlet 11 so that the water flows into one side with respect to the flow direction of the water (use water), and an outlet portion 13 may be formed such that the water passing through the flow path flows out into the other side. .

The inlet part 11 forms an inlet 11a at one side of the gasket body 10 so that an inlet pipe (not shown) is connected thereto, and an inlet guide to connect the inlet 11a and the first flow path region 21 to be described later. The connection hole 11b may be formed. In addition, a partition wall 11c may be formed at a boundary between the inflow guide connecting hole 11b and the first flow path region 21 through which a through hole is formed to allow water to pass therethrough. In this case, a mesh surrounding the through hole may be attached to prevent the ion exchange resin 1 filled in the first flow path region 21 from moving toward the inlet 11a.

The outlet portion 13 forms an outlet 13a on the other side of the gasket body 10 so that an outlet pipe (not shown) is connected, and an outlet guide so as to connect the outlet 13a and the third flow path region 25 to be described later. The connection hole 13b may be formed. In addition, a partition 13c may be formed at a boundary between the outflow guide connecting hole 13b and the third flow path region 25 through which a through hole is formed to allow water to pass therethrough. At this time, the mesh 13d surrounding the through hole may be attached to prevent the ion exchange resin 1 filled in the third flow path region 25 from moving toward the outlet 13a.

The flow path forming part 20 is formed in the gasket body 10 and has an intestine or zigzag shape flow path between the inlet part 11 and the outlet part 13. In the present invention, by forming a gut or zigzag flow path in the gasket body 10, the dead space of the flow path is reduced when the water flows along the flow path, the contact between the water and the ion exchange resin (1) described later Increasing the time can improve the performance of ion exchange.

The ion exchange material is filled on the flow path of the flow path forming part 20. Here, the ion exchange material is an insoluble synthetic resin such as ion exchange resin 1 having ions capable of ion exchange. The ion exchange resin 1 includes a cation exchange resin capable of cation exchange and an anion exchange resin capable of anion exchange, and may be filled in a mixed resin form by mixing the cation exchange resin and the anion exchange resin in an appropriate ratio. Examples of the cation exchange resin used in the present embodiment include Rohm & Haas's IR120 H +, and examples of anion exchange resins include Rohm & Haas's IRA402 OH-, and examples of mixed resins include cation exchange resins and anion exchange resins. In consideration of the ion exchange capacity, the mixture was filled at a volume ratio of 2: 3. Since the ion exchange resin 1 as described above can be understood by a known technique, detailed description thereof will be omitted.

At least one separation member 30 may be provided in the flow path forming unit 20 so as to divide the intestine or zigzag-shaped flow path into a plurality of independent regions. In the present exemplary embodiment, the configuration in which the flow path forming unit 20 includes two separation members 31 and 33 to separate the three flow path areas 21, 23, and 25 is provided, but the present invention is not limited thereto. It is also possible to provide a member to separate into two flow path regions, or to provide three or more separation members to separate into four or more flow path regions. In the present invention, by separating the flow path into a plurality of independent regions through the separating member 20, it is possible to independently fill different ion exchange resin (1) in each flow path region, between the different ion exchange resin (1) Can prevent mixing. Therefore, ion exchange performance can be improved more than when different ion exchange resins 1 are mixed in one flow path region.

The separating member 30 is preferably positioned left and right alternately at the boundary of the flow path partitioned into a plurality of regions. For example, in the present embodiment, when the flow path is divided into three sections so as to have the first, second, and third flow path areas 21, 23, and 25, the first flow path area 21 and the second flow path area. The first separating member 31 may be provided on the left side of the boundary portion 23, and the second separating member 33 may be provided on the right side of the boundary portion between the second flow passage region 23 and the third flow passage region 25. have. Here, the separating member 30 may be made of polyethylene (PE, PE) resin material of approximately 3mm in thickness.

Different ion exchange resins 1 may be respectively filled in each flow path area partitioned by the separating member 30. For example, in the present exemplary embodiment, when the first flow path region 21, the second flow path region 23, and the third flow path region 25 are provided between the inflow portion 11 and the outflow portion 13, the first flow passage region includes a first flow path region. A cation exchange resin may be filled in the flow path region 21, an anion exchange resin in the second flow path region 23, and a mixed resin in the third flow path region 25. In particular, in the present invention, it is preferable that the mixed resin is filled in the third flow path region 25 adjacent to the outlet portion 13 to adjust the PH.

At least one through hole 30a may be formed in the separating member 30 to allow water to pass therethrough. In the present exemplary embodiment, the configuration in which seven through holes 30a are formed in the separating member 30 is illustrated, but the present invention is not limited thereto, and the number of through holes 30a may be appropriately designed in consideration of the flow rate of water. For example, when the flow rate of water is to be increased, the number of through holes 30a may be increased, and when the flow rate of water is to be decreased, the number of through holes 30a may be decreased.

Here, the diameter D1 of the through hole 30a is made larger than the grain size D3 of the ion exchange resin 1.

The shielding members 40 are provided on the front and rear surfaces of the separating member 30 so as to cover the through holes 30a, and block the movement of the ion exchange resin 1 between the different flow path regions with respect to the separating member 30. It plays a role. The shielding member 40 is preferably a mesh (hereinafter, referred to by reference numeral 40) such as a mesh cloth (cloth).

In the present invention, the ion exchange resin (1) does not block the through hole (30a) to prevent the ion exchange resin (1) from moving to another passage region through the through hole (30a) without inhibiting the flow of water The diameter of the mesh hole 40a formed in the mesh 40 is smaller than the diameter D3 of the ion exchange resin 1, and the diameter D1 of the through hole 30a is formed of the ion exchange resin 1. It is formed larger than the diameter (D3). That is, if the diameter D1 of the through hole 30a is possible, the particle diameter of the ion exchange resin 1 is larger than the particle diameter D3, but the mesh hole is prevented from passing through the mesh hole 40a. The diameter D2 of 40a is formed smaller than the grain size D3 of the ion exchange resin 1. For example, when the particle diameter D3 of the ion exchange resin 1 is 610 to 830 µm, the diameter 40a of the mesh hole 40a is 100 to 600 µm and the diameter D1 of the through hole 30a. ) Is preferably formed at 1.5 to 1.8 mu m.

The gasket assembly for electric deionization according to the present invention is designed by using a CAD (cad) or the like, and the flow of water in the gasket using a fluid analysis program, such as COMSOL multiphysics 3.5a (hereinafter referred to as COMSOL) By analyzing, the improvement of ion exchange performance can be confirmed. Here, the flow analysis of the water in the gasket using the COMSOL can be understood by a known technique, detailed description thereof will be omitted.

Electrodeionization apparatus applying the gasket assembly of the present invention configured as described above is applied to the ion exchange membrane and the ion exchange resin filled in the gasket to remove the ionic material in the water through the electrodeionization process by ultra-pure water (DI water) can be prepared. In particular, the gasket assembly of the present invention can form an intestinal or zigzag flow path in the gasket body to reduce the four sections of the flow path and increase the contact time between the water and the ion exchange material, thereby improving ion exchange performance. . In addition, by separating the flow path into a plurality of independent regions through the separating member 30, it is possible to independently fill the different ion exchange resin (1) in each flow path region, mixing between different ion exchange resin (1) By preventing the ion exchange performance can be improved as well as the ion exchange resin (1) can be filled in various ratios, it is possible to confirm the resulting ion exchange performance change. In addition, the mesh 40 is provided to cover the through-hole 30a formed in the separating member 30, the diameter (D2) of the mesh hole (40a) formed in the mesh 40 of the ion exchange resin (1) By forming the diameter D3 smaller than the diameter D3 and making the diameter D1 of the through hole 30a larger than the diameter D3 of the ion exchange resin 1, the ion exchange resin 1 does not block the through hole 30a. Thus, the ion exchange resin 1 can be prevented from moving to another flow path region through the through hole 30a without inhibiting the flow of water.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a perspective view schematically showing a gasket assembly for electric deionization according to an embodiment of the present invention;

2 is an enlarged view of a portion A of FIG. 1;

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 and 5 is an exemplary view showing a state of movement of water and ion exchange resin in part A of FIG.

6 is an enlarged view of a portion B of FIG. 1.

<Description of Symbols for Main Parts of Drawings>

10: gasket body 20: flow path forming portion

21: first flow path region 23: second flow path region

25: third flow path region 30: separating member

31: first separating member 33: second separating member

40: shielding member, mesh

Claims (8)

A gasket body in which an inlet and an outlet of water are formed; A flow path forming part formed in the gasket body and having an intestine or zigzag-shaped flow path between the inlet and the outlet, and having an ion exchange resin filled on the flow path; At least one separation member provided in the flow path forming part to divide the flow path into a plurality of regions, and at least one through hole formed to allow the water to pass therethrough; And And a shielding member provided on the separation member to cover the through hole, and blocking the movement of the ion exchange resin between different flow path regions with respect to the separation member. Each flow passage area partitioned by the separating member is filled with different ion exchange resins, The different ion exchange resin is any one selected from the group consisting of a cation exchange resin, an anion exchange resin and a mixed resin mixed with the cation exchange resin and the anion exchange resin, Gasket assembly for the electric deionization characterized in that the mixed resin is filled in the flow path region adjacent to the outlet side of the plurality of flow path regions partitioned by the separating member. The gasket assembly of claim 1, wherein the shield member is a mesh. 3. The gasket assembly of claim 2, wherein a diameter of the mesh hole formed in the mesh is smaller than a diameter of the ion exchange resin, and a diameter of the through hole is larger than a diameter of the ion exchange resin. delete delete delete delete The gasket assembly of claim 1, wherein the separating member is alternately positioned at the boundary of the flow path partitioned into a plurality of regions.

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