A new type of elastic structure membrane electrode distance ion membrane electrolyzer

Abstract

The present invention relates to a novel elastic structure membrane inter-electrode ion membrane electrolyzer, comprising an electrolyzer frame, wherein an anode disk and a cathode disk are respectively arranged on the lower and upper sides of the electrolyzer frame, and the characteristic is that a novel elastomer is arranged upward on the cathode disk, and the novel elastomer is formed by a plurality of groups of novel elastomer components arranged in an array, and a circle of cathode surface mesh fixing net is arranged on the periphery of the novel elastomer, and the upper end of the cathode surface mesh fixing net has a flange bent outward, and the top surface of the novel elastomer is provided with a cathode surface mesh, and the four sides of the cathode surface mesh are bent downward and buckled under the flange of the cathode surface mesh fixing net. The present invention has the advantages of good electrical conductivity, the novel elastomer has a small pressure on the ion membrane during operation, can withstand reverse pressure, and can recover to the height and performance required for operation; can effectively protect the ion membrane, can reduce the cell voltage and electrolysis power consumption; and reduces the manufacturing cost of the electrolyzer.

Description

Technical Field

[0001] The invention relates to a novel elastic structure membrane inter-electrode distance ion membrane electrolyzer. Background Art

[0002] Ion membrane electrolyzers are the core equipment of the chlor-alkali industry. Under the guidance and encouragement of national policies, since 2009, all new caustic soda plants have adopted membrane-pole-gap or small-pole-gap ion membrane electrolyzers, and the existing membrane-pole-gap electrolyzers have been gradually upgraded and renovated, achieving remarkable results in energy saving, consumption reduction and capacity improvement. From the actual operation, there are still some problems:

[0003] 1. The nickel wire woven elastic corrugated mesh exerts a greater pressure on the ion membrane, forming resistance to the flow of gas and liquid;

[0004] 2. The nickel wire corrugated mesh is not able to resist reverse pressure when the gas pressure in the cathode and anode chambers of the electrolytic cell is abnormal;

[0005] 3. The temperature of the ion membrane area is higher than that of the cell with inter-electrode spacing;

[0006] 4. After the membrane pole distance modification, the quality requirements for brine are higher, and impurities on the cathode side are easy to penetrate into the ion membrane;

[0007] 5. Due to the above reasons, the service life of the ion membrane is often reduced. Summary of the invention

[0008] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a novel elastic structure membrane electrode distance ion membrane electrolyzer.

[0009] The object of the present invention is achieved in that:

[0010] A novel elastic structure membrane inter-electrode ion membrane electrolyzer comprises an electrolyzer frame, wherein an anode disk and a cathode disk are respectively arranged on the lower and upper sides of the electrolyzer frame, an anode rib plate is arranged downwardly in the anode disk, and an anode mesh is arranged at the bottom of the anode rib plate, characterized in that a novel elastomer is arranged upwardly on the cathode disk, the novel elastomer is formed by an array arrangement of multiple groups of novel elastomer components, the bottom of the novel elastomer component is connected to the surface of the cathode disk, a circle of cathode surface mesh fixing mesh is arranged on the periphery of the novel elastomer, the lower end of the cathode surface mesh fixing mesh is connected to the surface of the cathode disk, the upper end of the cathode surface mesh fixing mesh has a flange bent outward, the top surface of the novel elastomer is provided with a cathode surface mesh, the height of the novel elastomer is higher than the height of the cathode surface mesh fixing mesh, the four sides of the cathode surface mesh are bent downward and snapped under the flange of the cathode surface mesh fixing mesh.

[0011] Preferably, the novel elastomer assembly comprises a U-shaped base support body, a U-shaped reinforcing support body is arranged on the inner side of the base support body, and elastic sheets are arranged at left and right upper ends of the base support body.

[0012] Preferably, the elastic sheet includes a first arc segment, a straight line segment and a second arc segment extending in sequence from the upper end of the base support body, the convex surface of the first arc segment points to the upper end area of ​​the base support body, the straight line segment extends obliquely upward, and the convex surface of the second arc segment points directly upward, so that the convex surface of the second arc segment forms a supporting portion for supporting the cathode surface mesh.

[0013] As a preference, all the elastic sheets at the upper left end of the basic support body are arranged in left-right mirror symmetry with all the elastic sheets at the upper right end of the basic support body.

[0014] As a preference, the elastic sheets on the left and right sides of the upper left end of the basic support body are staggered, and the elastic sheets on the left and right sides of the upper right end of the basic support body are staggered.

[0015] As a preferred embodiment, the basic support body and the elastic sheet are integrally formed by stamping and bending a plate, and the reinforcing support body is formed by bending another plate.

[0016] As a preferred embodiment, outer edges of the left and right vertical sections of the reinforcing support body are respectively fixedly connected to inner edges of the left and right vertical sections of the basic support body.

[0017] As a preference, the cross-section height of the reinforcing support body is half the height of the entire novel elastomer component.

[0018] As a preferred embodiment, the vertical section of the reinforcing support body extends to the same height as the vertical section of the basic support body.

[0019] As a preferred embodiment, the anode disk and the back side of the cathode disk are connected via a composite strip, and a nickel mesh filling layer is provided in the gap between the composite strips.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses a new type of elastomer to replace the cathode ribs, cathode bottom mesh and nickel wire woven corrugated mesh in the original cathode membrane polar distance structure, which plays the role of support, conductivity and elasticity, and forms the cathode membrane polar distance structure with the cathode surface mesh. It has the following advantages:

[0022] 1. Good electrical conductivity. The new elastomer and cathode disk are welded by a resistance welding machine. The elastic claws formed by the elastic sheet and the cathode surface mesh are in contact and conductive. The contact points and contact areas meet and exceed the electrical conductivity requirements.

[0023] 2. The new elastomer is sufficient to support the cathode surface mesh;

[0024] 3. Compared with the original nickel wire corrugated elastomer, the new elastomer has the advantages of less pressure on the ion membrane during operation, can withstand reverse pressure, and can recover to the height and performance required for work;

[0025] 4. The use of new elastomers can effectively protect the ion membrane and reduce the cell voltage and electrolysis power consumption;

[0026] 5. After using the new elastomer, the manufacturing cost of the electrolyzer is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a new type of elastic structure membrane inter-electrode distance ion membrane electrolyzer.

[0028] Figure 2 for Figure 1 Schematic diagram of the new elastomer component.

[0029] Figure 3 for Figure 2 A top view of the new elastomer component in Figure 1.

[0030] Figure 4 Schematic diagram of the application of the new elastomer.

[0031] Figure 5 Local details for new elastomer applications.

[0032] in:

[0033] Electrolytic cell frame 1

[0034] Anode plate 2

[0035] Cathode disk 3

[0036] Composite strip 4

[0037] Nickel mesh filling layer 5

[0038] Anode rib plate 6

[0039] Anode mesh 7

[0040] New elastic body 8, basic support body 801, reinforced support body 802, elastic sheet 803, first arc segment 803.1, straight line segment 803.2, second arc segment 803.3

[0041] Cathode surface fixed net 9

[0042] Cathode screen 10. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-Figure 5 The present invention relates to a novel elastic structure membrane inter-electrode membrane electrolyzer, comprising an electrolyzer frame 1, wherein an anode disk 2 and a cathode disk 3 are respectively arranged on the lower side and the upper side of the electrolyzer frame 1, and the backs of the anode disk 2 and the cathode disk 3 are connected by a composite strip 4, and a nickel mesh filling layer 5 is arranged in the gap of the composite strip 4, and an anode rib plate 6 is arranged downward in the anode disk 2, and an anode mesh 7 is arranged at the bottom of the anode rib plate 6, and a novel elastomer 8 is arranged upward on the cathode disk 3, and the novel elastomer 8 is composed of multiple groups of novel elastomers. The components are arranged in an array, the bottom of the new elastomer component is connected to the surface of the cathode disk 3, a circle of cathode surface mesh fixing net 9 is arranged on the periphery of the new elastomer 8, the lower end of the cathode surface mesh fixing net 9 is connected to the surface of the cathode disk 3, the upper end of the cathode surface mesh fixing net 9 has a flange bent outward, and the top surface of the new elastomer 8 is provided with a cathode surface mesh 10, the height of the new elastomer 8 is slightly higher than the height of the cathode surface mesh fixing net 9, and the four sides of the cathode surface mesh 10 are bent downward and buckled under the flange of the cathode surface mesh fixing net 9.

[0045] The novel elastomer assembly includes a U-shaped base support body 801, a U-shaped reinforcing support body 802 is arranged on the inner side of the base support body 801, and elastic sheets 803 are arranged on the left and right upper ends of the base support body 801, and the elastic sheets 803 include a first arc segment 803.1, a straight segment 803.2 and a second arc segment 803.3 extending in sequence from the upper end of the base support body 801, the convex surface of the first arc segment 803.1 points to the upper end area of ​​the base support body 801, the straight segment 803.2 extends obliquely upward, and the convex surface of the second arc segment 803.3 points directly upward, so that the convex surface of the second arc segment 803.3 forms a support portion for supporting the cathode surface mesh 10.

[0046] All the elastic sheets 803 at the upper left end of the basic support body 801 are arranged in left-right mirror symmetry with all the elastic sheets 803 at the upper right end of the basic support body 801, the elastic sheets 803 on the left and right sides of the upper left end of the basic support body 801 are staggered, and the elastic sheets 803 on the left and right sides of the upper right end of the basic support body 801 are staggered.

[0047] The basic support body 801 and the elastic sheet 803 are formed as a whole by stamping and bending a piece of plate, and the reinforcing support body 802 is formed by bending another piece of plate, and the outer edges of the left and right vertical sections of the reinforcing support body 802 are respectively fixedly connected to the inner edges of the left and right vertical sections of the basic support body 801, and the height of the horizontal section of the reinforcing support body 802 is half the height of the entire new elastomer assembly, and the vertical section of the reinforcing support body 802 extends to the same height as the vertical section of the basic support body 801.

[0048] The material of the novel elastomer component is a nickel plate with a thickness of 0.08mm-0.18mm.

[0049] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. An elastic structure membrane inter-electrode ion membrane electrolyzer, comprising an electrolyzer frame (1), wherein an anode plate (2) and a cathode plate (3) are respectively arranged on the lower side and the upper side of the electrolyzer frame (1), an anode rib plate (6) is arranged downwardly in the anode plate (2), and an anode mesh (7) is arranged at the bottom of the anode rib plate (6), characterized in that An elastic body (8) is arranged upward on the cathode disk (3), and the elastic body (8) is formed by arranging a plurality of elastic body components in an array, the bottom of the elastic body component is connected to the surface of the cathode disk (3), a circle of cathode surface mesh fixing net (9) is arranged on the periphery of the elastic body (8), the lower end of the cathode surface mesh fixing net (9) is connected to the surface of the cathode disk (3), the upper end of the cathode surface mesh fixing net (9) has a flange bent outward, and a cathode surface mesh (10) is arranged on the top surface of the elastic body (8), the height of the elastic body (8) is higher than the height of the cathode surface mesh fixing net (9), and the four sides of the cathode surface mesh (10) are bent downward and buckled under the flange of the cathode surface mesh fixing net (9); The elastic body assembly comprises a basic support body (801) with a U-shaped structure, a reinforcing support body (802) with a U-shaped structure is arranged on the inner side of the basic support body (801), and elastic sheets (803) are arranged on both left and right upper ends of the basic support body (801) in a staggered manner. The elastic sheet (803) comprises a first arc segment (803.1), a straight segment (803.2) and a second arc segment (803.3) extending in sequence from the upper end of the base support body (801), the convex surface of the first arc segment (803.1) pointing towards the upper end region of the base support body (801), the straight segment (803.2) extending obliquely upwards, and the convex surface of the second arc segment (803.3) pointing directly upwards, so that the convex surface of the second arc segment (803.3) forms a support portion for supporting the cathode surface mesh (10); All the elastic sheets (803) at the upper left end of the basic support body (801) and all the elastic sheets (803) at the upper right end of the basic support body (801) are arranged in a left-right mirror-symmetrical manner; The elastic sheets (803) on the left and right sides of the upper left end of the basic support body (801) are arranged in a staggered manner, and the elastic sheets (803) on the left and right sides of the upper right end of the basic support body (801) are arranged in a staggered manner; The basic support body (801) and the elastic sheet (803) are integrally formed by stamping and bending a plate, and the reinforcing support body (802) is formed by bending another plate.

2. The elastic structure membrane electrode distance ion membrane electrolyzer according to claim 1, characterized in that The outer edges of the left and right vertical sections of the reinforcing support body (802) are respectively fixedly connected to the inner edges of the left and right vertical sections of the basic support body (801).

3. The elastic structure membrane electrode distance ion membrane electrolyzer according to claim 1, characterized in that The height of the cross section of the reinforcing support body (802) is located at half the height of the entire elastic body component.

4. The elastic structure membrane electrode distance ion membrane electrolyzer according to claim 1, characterized in that The vertical section of the reinforcing support body (802) extends to the same height as the vertical section of the basic support body (801).

5. The elastic structure membrane electrode distance ion membrane electrolyzer according to claim 1, characterized in that The backs of the anode disk (2) and the cathode disk (3) are connected via a composite strip (4), and a nickel mesh filling layer (5) is provided in the gap between the composite strips (4).

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