Improved membrane polar distance electrolytic bath

Abstract

The utility model relates to the technical field of electrolytic baths, in particular to an improved membrane polar distance electrolytic bath. The improved membrane polar distance electrolytic cell comprises a cell shell and a cell shell bottom plate, the cell shell is located at the upper end of the cell shell bottom plate, and rib plates are arranged on the two sides of the cell shell respectively; the rib plates are divided into cathode rib plates and anode rib plates, a partition plate is fixedly arranged in the middle of the cell shell, a cathode chamber is formed between the arranged cathode rib plates and the partition plate, and an anode chamber is formed between the arranged anode rib plates and the partition plate; meanwhile, a cathode film polar distance assembly is arranged in the cathode chamber, and an anode film polar distance assembly is mounted in the anode chamber; according to the improved membrane polar distance electrolytic bath, through the matching effect of the cathode membrane polar distance assembly arranged in the cathode chamber and the anode membrane polar distance assembly arranged in the anode chamber, the problem that the electrode base materials (titanium and nickel nets) of the current collector are welded on rib plates, so that the distance between the rib plates is large can be solved; and the mesh surface is easy to form deformations such as sinking or protruding due to pressure fluctuation in the electrolytic bath.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to an improved membrane-pole-distance electrolytic cell. Background Art

[0002] Membrane electrolysis is a method of using a cation exchange membrane to separate a unit electrolytic cell into an anode chamber and a cathode chamber to separate the electrolysis products. Ion membrane electrolysis is a new technology developed on the basis of ion exchange resin (see ion exchanger). It uses the selective permeability of ion exchange membranes to anions and cations, allowing ions with one charge to pass through while restricting ions with the opposite charge to pass through, so as to achieve the purpose of concentration, desalination, purification, refining and electrochemical synthesis.

[0003] The membrane cell electrolysis method requires the use of an electrolytic cell equipment during production. The electrolytic cell equipment provided in the related art is welded to the rib plate because the electrode substrate (titanium, nickel mesh) of the collector is welded to the rib plate, and the spacing between the rib plates is generally large. Therefore, when the electrolytic cell is running, the rib plate surface is easily deformed by the impact pressure generated by the pressure fluctuation of the electrolyte inside the electrolytic cell, causing concave or convex deformation;

[0004] In view of the problems in the above-mentioned background technology, the utility model aims to provide an improved membrane electrode spacing electrolyzer. Utility Model Content

[0005] The purpose of the utility model is to provide an improved membrane-pole-distance electrolyzer to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An improved membrane-pole-distance electrolyzer, the improved membrane-pole-distance electrolyzer comprising:

[0008] A tank shell and a tank shell bottom plate, wherein the tank shell is located at the upper end of the tank shell bottom plate, and rib plates are respectively provided on both sides of the tank shell; a liquid collecting box assembly is installed on the rib plate; the left and right sides of the lower end of the rib plate are respectively connected to an overflow pipe and a liquid inlet pipe;

[0009] The ribs are divided into cathode ribs and anode ribs. A partition is fixed in the middle of the tank shell. A cathode chamber is formed between the cathode ribs and the partition, and an anode chamber is formed between the anode ribs and the partition.

[0010] Meanwhile, a cathode membrane pole distance assembly is arranged inside the cathode chamber, and an anode membrane pole distance assembly is installed inside the anode chamber.

[0011] As a further solution of the utility model: the upper and lower ends of the rib plate are connected and fixed to the upper and lower ends of the tank shell by a fastening flange system; the bottom end of the cathode chamber is arranged at intervals and connected to the caustic soda feed distribution pipe; the bottom end of the anode chamber is arranged at intervals and connected to the brine feed distribution pipe; and conductive contact strips are also distributed on the outer surface of the anode rib plate.

[0012] As a further solution of the utility model: the cathode membrane pole distance assembly includes an ion membrane and a cathode elastic net, the ion membrane is installed on one side of the cathode elastic net, and the cathode elastic net is installed and fixed on one side of the partition.

[0013] As a further solution of the utility model: the anode membrane pole distance assembly includes an anode louver, and a downcomer plate is installed on one side of the lower end of the anode louver.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Compared with the current electrolyzer, the improved membrane-pole-distance electrolyzer has the following advantages:

[0016] The cathode membrane pole distance assembly is provided inside the cathode chamber, and the anode membrane pole distance assembly is installed inside the anode chamber; the cathode membrane pole distance assembly installed inside the cathode chamber cooperates with the anode membrane pole distance assembly installed inside the anode chamber, so as to reduce the problem that the electrode substrate (titanium, nickel mesh) of the collector is welded to the rib plate, the spacing between the rib plates is large, and the mesh surface is easily deformed by pressure fluctuations in the electrolytic cell, such as concave or convex.

[0017] For example, when the electrolyte inside the cathode chamber fluctuates and causes fluctuating stamping pressure on the surface of the rib plate, the ion membrane and cathode elastic net that are set can achieve damping and shock absorption for the electrolyte with large fluctuations, and reduce the pressure generated when the electrolyte flows. For example, the ion membrane that is set can filter the electrolyte and achieve the first buffering damping and shock absorption, while the cathode elastic net with elastic properties can achieve the second buffering damping and shock absorption for the electrolyte; when the electrolyte inside the anode chamber fluctuates, the anode shutter is designed as a shutter structure, which can reduce the impact pressure caused by the electrolyte on the anode shutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0019] Figure 1 The present invention is a front view of an improved membrane-pole-distance electrolytic cell according to an embodiment of the present invention.

[0020] Figure 2 The present invention is a side view of an improved membrane-pole-distance electrolyzer according to an embodiment of the present invention.

[0021] Figure 3 It is a top view of an electrolytic cell in the prior art.

[0022] Figure 4 It is a schematic diagram of the assembly of the rib plate and the bottom plate at position A of the electrolytic cell in the prior art.

[0023] In the figure: 1-tank shell, 2-liquid collecting box assembly, 3-rib plate, 4-elastic net, 5-overflow pipe, 6-tank shell bottom plate, 7-liquid inlet pipe, 8-fastening flange system, 9-cathode rib plate, 10-cathode chamber, 11-ion membrane, 12-cathode elastic net, 13-partition, 14-caustic soda feed distribution pipe, 15-down liquid plate, 16-brine feed distribution pipe, 17-conductive contact strip, 18-anode rib plate, 19-anode chamber, 20-anode shutter, 21-weld. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] Example

[0026] See also Figure 1 and Figure 2 , an improved membrane-pole-distance electrolyzer provided in an embodiment of the utility model, the improved membrane-pole-distance electrolyzer comprises:

[0027] A tank shell 1 and a tank shell bottom plate 6, wherein the tank shell 1 is located at the upper end of the tank shell bottom plate 6, and rib plates 3 are respectively provided on both sides of the tank shell 1; a liquid collecting box assembly 2 is installed on the rib plate 3, and the liquid collecting box assembly 2 arranged on the rib plate 3 is used to collect electrolyte droplets when the improved membrane gap electrolyzer is powered on and in operation; the left and right sides of the lower end of the rib plate 3 are respectively connected to an overflow pipe 5 and a liquid inlet pipe 7; the overflow pipe 5 is used to guide the excess electrolyte back to the electrolyzer for reuse through the connected overflow pipe 5 when the electrolyte flow exceeds a certain limit during the operation of the electrolyzer, so as to maintain the stable operation of the entire improved membrane gap electrolyzer; and the liquid inlet pipe 7 is used to introduce the electrolyte required for the operation of the improved membrane gap electrolyzer;

[0028] The rib plate 3 is divided into a cathode rib plate 9 and an anode rib plate 18. A partition plate 13 is fixedly installed in the middle of the tank shell 1. A cathode chamber 10 is formed between the cathode rib plate 9 and the partition plate 13, and an anode chamber 19 is formed between the installed anode rib plate 18 and the partition plate 13. At the same time, a cathode membrane pole distance assembly is provided inside the cathode chamber 10, and an anode membrane pole distance assembly is installed inside the anode chamber 19.

[0029] In the embodiment of the utility model, when the improved membrane-pole-distance electrolyzer is used, the cathode membrane-pole-distance assembly installed in the cathode chamber 10 cooperates with the anode membrane-pole-distance assembly installed in the anode chamber 19, so that the problem that the electrode substrate (titanium, nickel mesh) of the collector is welded to the rib plate 3, the spacing between the rib plates 3 is large, and the mesh surface is easily deformed by the pressure fluctuation in the electrolyzer, such as concave or convex;

[0030] See also Figure 1 and Figure 2 In one embodiment of the utility model, the upper and lower ends of the rib plate 3 are connected and fixed to the upper and lower ends of the tank shell 1 by a fastening flange system 8; the bottom end of the cathode chamber 10 is arranged and distributed at intervals to connect to the caustic soda feed distribution pipe 14, and the connected caustic soda feed distribution pipe 14 is used to pass the caustic soda solution of the electrolyte into the cathode chamber 10; the bottom end of the anode chamber 19 is arranged and distributed at intervals to connect to the brine feed distribution pipe 16, and the connected brine feed distribution pipe 16 is used to pass the brine of the electrolyte into the anode chamber 19; at the same time, a conductive contact strip 17 is also distributed on the outer surface of the anode rib plate 18, and the distributed conductive contact strip 17 is used to enhance the conductivity of the electrolyte when the electrolytic cell is powered on and running;

[0031] See also Figure 1 and Figure 2 In one embodiment of the utility model, the cathode membrane pole distance assembly includes an ion membrane 11 and a cathode elastic net 12 (i.e., the elastic net 4), the ion membrane 11 is installed on one side of the cathode elastic net 12, and the cathode elastic net 12 is installed and fixed on one side of the partition 13;

[0032] In the embodiment of the utility model, when the electrolyte in the cathode chamber 10 fluctuates and causes fluctuating stamping pressure on the surface of the rib plate 3, the ion membrane 11 and the cathode elastic net 12 can realize damping and shock reduction for the electrolyte with large fluctuations, and reduce the pressure generated when the electrolyte flows. For example, the ion membrane 11 can filter the electrolyte and realize the first buffering damping and shock reduction, while the cathode elastic net 12 with elastic properties can realize the second buffering damping and shock reduction for the electrolyte;

[0033] See also Figure 2In one embodiment of the utility model, the anode membrane pole distance assembly includes an anode shutter 20, and the anode shutter 20 is designed as a shutter structure, which can reduce the impact pressure caused by the electrolyte on the anode shutter 20; in addition, a liquid drop plate 15 is installed on one side of the lower end of the anode shutter 20, and the installed liquid drop plate 15 is used to play the role of a liquid channel and is also an important space for realizing gas-liquid separation;

[0034] See also Figure 3 and Figure 4 , at the position A of the electrolytic cell in the prior art, the rib plate 3 and the tank shell bottom plate 6 are welded to form a weld 21 between the rib plate 3 and the tank shell bottom plate 6;

[0035] The electrode substrate (titanium, nickel mesh) is the rib plate 3 which is welded to the tank shell bottom plate 6. The spacing between the rib plates 3 is large, and the mesh surface is easily deformed by depression or protrusion due to the pressure fluctuation in the electrolytic cell.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved membrane-pole-distance electrolyzer, comprising: A tank shell (1) and a tank shell bottom plate (6), wherein the tank shell (1) is located at the upper end of the tank shell bottom plate (6), and rib plates (3) are respectively provided on both sides of the tank shell (1); a liquid collecting box assembly (2) is installed on the rib plate (3); the left and right sides of the lower end of the rib plate (3) are respectively connected to an overflow pipe (5) and a liquid inlet pipe (7); the characteristics are: The rib plate (3) is divided into a cathode rib plate (9) and an anode rib plate (18); a partition plate (13) is fixedly installed in the middle of the tank shell (1); a cathode chamber (10) is formed between the cathode rib plate (9) and the partition plate (13); and an anode chamber (19) is formed between the anode rib plate (18) and the partition plate (13); At the same time, a cathode membrane pole distance assembly is arranged inside the cathode chamber (10), and an anode membrane pole distance assembly is installed inside the anode chamber (19).

2. The improved membrane-pole-distance electrolyzer according to claim 1, characterized in that: The upper and lower ends of the provided rib plate (3) are connected and fixed to the upper and lower ends of the tank shell (1) through a fastening flange system (8); the bottom end of the cathode chamber (10) is arranged at intervals and connected to a caustic soda feed distribution pipe (14); the bottom end of the anode chamber (19) is arranged at intervals and connected to a brine feed distribution pipe (16); and a conductive contact strip (17) is also distributed on the outer surface of the anode rib plate (18).

3. The improved membrane-pole-distance electrolyzer according to claim 1, characterized in that: The cathode membrane pole distance assembly comprises an ion membrane (11) and a cathode elastic net (12); the ion membrane (11) is mounted on one side of the cathode elastic net (12); and the cathode elastic net (12) is mounted and fixed on one side of the partition (13).

4. The improved membrane-pole-distance electrolyzer according to claim 1, characterized in that: The anode membrane pole distance assembly comprises an anode louver (20), and a downcomer plate (15) is installed on one side of the lower end of the anode louver (20).

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