Sodium bromate electrolytic bath

Abstract

The utility model discloses a sodium bromate electrolytic bath which comprises two pressing plates, a plurality of cathodes and anodes which are distributed at intervals are arranged between the two pressing plates, hollow cavities are arranged at the upper ends and the lower ends of the cathodes and the anodes, and annularly distributed sealing gaskets are arranged between the cathodes and the anodes and between the pressing plates and the adjacent cathodes or anodes. The cavities on the cathode and the anode are positioned in an area encircled by the sealing gasket; the cavities on the cathodes and the anodes on the same side are communicated with each other to form a feeding area and a discharging area, the feeding area is communicated with the feeding port on one pressing plate, and the discharging area is communicated with the discharging port on the other pressing plate; and the cathode, the anode and the sealing gasket are fixed together by the two pressing plates through the fastening assembly. The closed reaction chamber is realized by adopting diaphragm-free electrolysis, improving the structures of the cathode and the anode and pressing the two pressing plates, so that the manufacturing cost is reduced, the electrolytic efficiency and the stability of the electrolytic bath are improved, the production cost is reduced, and pollution is effectively controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolysis and relates to a sodium bromate electrolytic cell. Background Art

[0002] Sodium bromate is an inorganic compound with the chemical formula NaBrO3. It is mainly used as an analytical reagent, oxidant, and perm agent. It can also be mixed with sodium bromide as a gold dissolving agent.

[0003] At present, the main component of the electrolytic cell used in sodium bromate electrolysis is a plastic shell resistant to organic solvents. The anode is made of graphite, the cathode is made of lead plate, and the electrolysis is open. There are the following problems: 1. The service life of the cathode and anode of the electrolytic cell is short; 2. The service life of the electrolytic cell shell is short; 3. The frequency of disassembly and maintenance is high; 4. The electrolytic efficiency of the electrolytic cell is low, which brings troubles to industrial continuous production; 5. High energy consumption, low yield, high pollution, high maintenance costs and high production costs.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0005] The utility model aims to provide a sodium bromate electrolytic cell, which is improved to solve at least one problem existing in the existing sodium bromate electrolytic cell in the background technology.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A sodium bromate electrolytic cell comprises a cell body and a cell cover, comprising two pressing plates, a plurality of cathodes and anodes distributed at intervals are arranged between the two pressing plates, the upper and lower ends of the cathodes and anodes are both provided with hollow cavities, annularly distributed sealing gaskets are arranged between the cathodes and anodes, and between the pressing plates and adjacent cathodes or anodes, the cavities on the cathodes and anodes are located within the enclosed area of ​​the sealing gaskets; the cavities on the cathodes and anodes located on the same side are mutually connected to form a feed area and a discharge area, the feed area is connected to a feed port on one of the pressing plates, and the discharge area is connected to a discharge port on the other pressing plate; the two pressing plates fix the cathodes, anodes and sealing gaskets together through a bolting assembly.

[0008] Specifically, the anode is made of yttrium oxide or lead dioxide, the cathode is made of nickel alloy, and the pressing plate is made of stainless steel.

[0009] In one embodiment, the sealing gasket is made of EPDM rubber or polytetrafluoroethylene.

[0010] Specifically, the anode is conductively connected to the anode main copper bar via a connector, and the cathode is conductively connected to the cathode main copper bar via a connector.

[0011] Preferably, the connecting piece is a flexible copper busbar.

[0012] Preferably, flanges are provided at both the feeding port and the discharging port.

[0013] Furthermore, a plurality of positioning holes for the bolting components to pass through are distributed on the periphery of the pressing plate.

[0014] The above technical solution has the following beneficial effects: by adopting diaphragm-free electrolysis, improving the structure of the cathode and the anode, and realizing a closed reaction chamber by pressing two pressing plates together, the manufacturing cost is reduced, the electrolysis efficiency and the stability of the electrolytic cell are improved, the production cost is reduced, and pollution is effectively controlled; the cathode and anode made of specific materials are used, which greatly improves the service life of the anode and cathode and the electrolysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model in a top view.

[0018] Figure 2 This is a schematic diagram of the first state structure provided by the utility model.

[0019] Figure 3 This is a schematic diagram of the cathode and anode distribution structure provided by the utility model.

[0020] Figure 4 This is a schematic diagram of the cathode and anode conductive structure provided by the utility model.

[0021] In the figure: 101, 102-pressing plates; 103-positioning hole; 104-cathode; 105-anode; 106, 107-cavity; 108-sealing gasket; 109-feeding port; 110-discharging port; 111-anode main copper bar; 112-cathode main copper bar; 113, 114-connecting pieces; S1-feeding area; S2-discharging area. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0023] See also Figure 1-Figure 3 As shown, a sodium bromate electrolytic cell includes two pressing plates 101 and 102. The two pressing plates 101 and 102 have the same structure and size, and are provided with a plurality of positioning holes 103 distributed on the periphery of the pressing plates 101 and 102 for the bolting components to pass through. A plurality of cathodes 104 and anodes 105 are arranged between the pressing plates 101 and 102. In this embodiment, the cathodes 104 and anodes 105 have the same structure, as shown in FIG. Figure 4 As shown, the upper and lower ends of the cathode 104 and the anode 105 are both provided with hollow cavities 106 and 107, and the middle area of ​​the cavities 106 and 107 is the reaction area of ​​the cathode 104 and the anode 105. A ring-shaped sealing gasket 108 is arranged between the cathode 104 and the anode 105 (a ring-shaped sealing gasket is also arranged between the pressing plates 101, 102 and the adjacent cathode or anode), and the cavities 106 and 107 on the cathode and the anode are located in the area surrounded by the sealing gasket. The cavities 106 on the cathode and the anode on the same side are mutually connected to form a feed area S1, and the cavities 107 on the cathode and the anode on the same side are mutually connected to form a discharge area S2, the feed area S1 is connected to the feed port 109 on the pressing plate 101, and the discharge area S2 is connected to the discharge port 110 on the pressing plate 102; the two pressing plates 101 and 102 fix the cathode, the anode and the sealing gasket together through a bolting assembly.

[0024] Specifically, the bolt rods on the fastening assembly pass through the positioning holes of the pressing plates 101 and 102 and are locked with nuts to achieve assembly and fixation of the sodium bromate electrolytic cell.

[0025] In this embodiment, the anode 105 is made of yttrium oxide or lead dioxide, the cathode 104 is made of nickel alloy, and the pressing plates 101 and 102 are made of stainless steel. Since the anode and cathode have good corrosion resistance and thermal conductivity, the service life of the cathode and cathode is greatly improved, and the electrolysis efficiency is improved.

[0026] At the same time, the utility model adopts diaphragm-free electrolysis, improves the structure of the cathode and the anode, and realizes a closed reaction chamber by pressing two pressing plates, thereby reducing manufacturing costs, improving electrolysis efficiency and stability of the electrolytic cell, reducing production costs, and effectively controlling pollution.

[0027] In this embodiment, the sealing gasket is made of EPDM rubber or polytetrafluoroethylene, which has good corrosion resistance and aging resistance, and improves the service life of the sodium bromate electrolytic cell. When maintenance is required, the sodium bromate electrolytic cell can be disassembled by simply loosening the nut, and the maintenance operation is convenient.

[0028] In this embodiment, flanges are provided at both the feeding port and the discharging port to facilitate connection with other pipelines.

[0029] A power socket is also provided on the pressing plates 101 and 102, and the power socket is connected to the main power supply through a power cord. The positive pole of the power socket is connected to the anode main copper bar 111 through a connecting copper bar, and the negative pole of the power socket is connected to the cathode main copper bar 112 through a connecting copper bar (in this embodiment, the anode main copper bar 111 and the cathode main copper bar 112 are both conductive main copper bars). The anode 105 is conductively connected to the anode main copper bar 111 through a connector 113 (flexible connector copper bar), and the cathode 104 is conductively connected to the cathode main copper bar 112 through a connector 114 (flexible connector copper bar).

[0030] When in use, the electrolytic liquid enters the feed area from the feed port, and when the copper bar is connected and energized, the electrolytic liquid flows along the gap between the cathode and the anode toward the discharge area. During this process, the energized cathode and anode electrolyze the electrolytic liquid, and finally the electrolyzed liquid is discharged from the discharge port.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A sodium bromate electrolytic cell, characterized in that: It comprises two pressing plates, between which a plurality of cathodes and anodes are arranged at intervals, the upper and lower ends of the cathodes and anodes are provided with hollow cavities, and between the cathodes and anodes and between the pressing plates and adjacent cathodes or anodes are provided with annularly distributed sealing gaskets, the cavities on the cathodes and anodes are located within the enclosed area of ​​the sealing gaskets; the cavities on the cathodes and anodes on the same side are connected to each other to form a feed area and a discharge area, the feed area is connected to a feed port on one of the pressing plates, and the discharge area is connected to a discharge port on the other pressing plate; the two pressing plates fix the cathodes, anodes and sealing gaskets together by a bolting assembly.

2. The sodium bromate electrolytic cell according to claim 1, characterized in that: The anode is made of yttrium oxide or lead dioxide, and the cathode is made of nickel alloy.

3. The sodium bromate electrolytic cell according to claim 1, characterized in that: The sealing gasket is made of EPDM rubber or polytetrafluoroethylene.

4. The sodium bromate electrolytic cell according to claim 1, characterized in that: The anode is conductively connected to the anode main copper bar through a connector, and the cathode is conductively connected to the cathode main copper bar through a connector.

5. The sodium bromate electrolytic cell according to claim 4, characterized in that: The connecting piece is a soft connecting copper bar.

6. The sodium bromate electrolytic cell according to claim 1, characterized in that: Flanges are arranged at the feeding port and the discharging port.

7. The sodium bromate electrolytic cell according to claim 1, characterized in that: A plurality of positioning holes for the bolting components to pass through are distributed on the periphery of the pressing plate.

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