Electrolytic tank for tetrapropylammonium hydroxide

Abstract

The utility model discloses an electrolytic tank for tetrapropylammonium hydroxide, which comprises cathode tank bodies and anode tank bodies, the cathode tank bodies and the anode tank bodies are arranged in a staggered manner and made of titanium alloy materials, ionic membranes are arranged between the adjacent anode tank bodies and cathode tank bodies, and polar plates are arranged on the anode tank bodies and the cathode tank bodies on the two sides of the ionic membranes; each cathode tank body and each anode tank body are respectively provided with an independent liquid inlet and an independent liquid outlet, pressing plates are respectively arranged on the outer sides of the cathode tank bodies and the anode tank bodies, the cathode tank bodies and the anode tank bodies are fixed together by the two pressing plates through bolt tightening assemblies, and insulating plates are arranged between the pressing plates and the adjacent cathode tank bodies or anode tank bodies. Annular sealing gaskets are arranged between the adjacent cathode cell bodies and anode cell bodies, and the ionic membranes and the polar plates are located in the area defined by the sealing gaskets. The problems of aging and poor thermal conductivity are well solved by adopting a titanium alloy material, the electrolysis efficiency is greatly improved, and the problem that the ionic membrane is broken during disassembly is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic equipment and relates to an electrolytic cell used for tetrapropylammonium hydroxide. Background Art

[0002] The electrolytic cell consists of a cell body, an anode and a cathode, and most of them are separated by a diaphragm. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce the desired product.

[0003] The electrolyzer currently used for tetrapropylammonium hydroxide uses a plastic (PP) shell, which is prone to aging and leakage during long-term use. For this reason, regular maintenance is required. Currently, based on 365 days a year, it needs to be shut down for 3 months each year, which greatly affects production efficiency. Once a leak occurs, it is inconvenient to disassemble, and the ion membrane inside is easily damaged. At the same time, the cathode is made of stainless steel, which has a short life and is easy to contaminate the solution medium. The plastic shell has poor thermal conductivity, which is easy to cause local overheating, resulting in poor temperature regulation, poor electrolyte volume, and affecting production capacity.

[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 an electrolytic cell for tetrapropylammonium hydroxide, improve the thermal conductivity and service life of the electrolytic cell, and improve production efficiency.

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

[0007] An electrolytic cell for tetrapropylammonium hydroxide comprises a cathode cell body and an anode cell body which are staggered and made of titanium alloy, an ion membrane is arranged between adjacent anode cells and cathode cells, and a pole plate with a mesh structure is arranged on the anode cells and cathode cells on both sides of the ion membrane, and the pole plate is connected with the inner cavity of the corresponding anode cell body and the inner cavity of the cathode cell body; each of the cathode cell body and the anode cell body is provided with an independent liquid inlet and liquid outlet, and a pressure plate is respectively arranged on the outer side of the cathode cell body and the anode cell body, and the two pressure plates fix the cathode cell body and the anode cell body together by a bolting assembly, an insulating plate is arranged between the pressure plate and the adjacent cathode cell body or anode cell body, and a ring-shaped distributed sealing gasket is arranged between the adjacent cathode cell body and the anode cell body, and the ion membrane and the pole plate are located in the enclosed area of ​​the sealing gasket.

[0008] The liquid inlet and liquid outlet of the cathode tank body are connected to the cathode liquid inlet main pipe and the cathode liquid outlet main pipe respectively, and the liquid inlet and liquid outlet of the anode tank body are connected to the anode liquid inlet main pipe and the anode liquid outlet main pipe respectively.

[0009] Furthermore, the sealing gasket is provided with an embedding groove, and the side edge of the ion membrane is embedded in the embedding groove.

[0010] Specifically, the electrode plate on the anode cell body is an anode plate, and the anode plate and the anode cell body are integrally formed; the electrode plate on the cathode cell body is a cathode plate, and the cathode plate and the cathode cell body are integrally formed.

[0011] Furthermore, the liquid inlet on the cathode cell body is located below the cathode cell body, and the liquid outlet on the cathode cell body is located above the cathode cell body.

[0012] Specifically, the liquid inlet on the anode cell body is located below the anode cell body, and the liquid outlet on the cathode cell body is located above the cathode cell body.

[0013] Furthermore, a positioning plate is disposed on the periphery of the cathode tank body and the anode tank body, and a plurality of positioning holes for the bolting components to pass through are distributed on the positioning plate.

[0014] The above technical solution has the following beneficial effects: the anode and cathode tanks are made of titanium alloy, which have good corrosion resistance and thermal conductivity, and solve the problems of long-term aging and high local temperature. The temperature is easy to control and the electrolysis efficiency is improved. The anode and cathode tanks are used as shells and electrodes. The inside of the shell is used as a reaction chamber, which has a long service life. With the same electrolysis area, the production capacity is increased by 30%, and the electrolysis efficiency is high. The use of sealing gaskets solves the problem of ion membrane rupture during disassembly, and disassembly and assembly are convenient. 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 first state structure provided by the utility model.

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

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

[0020] In the figure: 1- cathode tank body; 11- electrode plate; 12- positioning plate; 13- positioning hole; 14- liquid inlet; 15- liquid outlet; 16- ear hanger; 2- anode tank body; 3- insulating plate; 4- pressing plate; 5- ion membrane; 6- sealing gasket; 7- bolting assembly. DETAILED DESCRIPTION

[0021] 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

[0022] See also Figure 1-Figure 3 As shown, an electrolytic cell for tetrapropylammonium hydroxide comprises a cathode cell body 1 and an anode cell body 2 made of titanium alloy arranged alternately, and an ion membrane 5 is arranged between adjacent anode cells 2 and cathode cells 1. A mesh-shaped electrode plate is arranged on the anode cell body 2 and the cathode cell body 1 on both sides of the ion membrane 5. In this embodiment, the cathode cell body 1 and the anode cell body 2 have the same structure, and are both as shown in FIG. Figure 3 For the convenience of description, the cathode cell body 1 is taken as an example for explanation.

[0023] The side wall of the cathode tank body 1 is provided with a plate 11 (cathode plate), which is distributed on the side wall of the cathode tank body 1 and is connected to the inner cavity of the cathode tank body. The cathode plate and the cathode tank body are integrally formed. A positioning plate 12 is provided on the periphery of the cathode tank body 1, and a plurality of positioning holes 13 are distributed on the positioning plate 12. Each cathode tank body 1 is provided with an independent liquid inlet 14 and a liquid outlet 15, wherein the liquid inlet 14 is located below the liquid outlet 15, and the liquid inlet 14 is connected to the external cathode liquid inlet main pipe, and the liquid outlet 15 is connected to the external cathode liquid outlet main pipe. An ear hanger 16 is provided on the upper end surface of the cathode tank body 1 to facilitate the lifting and transportation of the cathode tank body 1.

[0024] Similarly: the side wall of the anode tank body 2 is provided with a pole plate (anode plate), which is mainly distributed on the side wall of the anode tank body 2 and is connected to the inner cavity of the anode tank body, and the above-mentioned anode plate and the anode tank body are formed in one piece. A positioning plate is arranged on the periphery of the anode tank body, and a number of positioning holes are distributed on the positioning plate. Each anode tank body is provided with an independent liquid inlet and liquid outlet, wherein the liquid inlet is located below the liquid outlet, and the liquid inlet is connected to the external anode liquid inlet main pipe, and the liquid outlet is connected to the external anode liquid outlet main pipe. An ear hanger is arranged on the upper end surface of the anode tank body to facilitate the lifting and transportation of the anode tank body.

[0025] The cathode tank body 1 and the anode tank body 2 are provided with a pressing plate 4 on the outside, and the two pressing plates 4 are used to fix the cathode tank body 1 and the anode tank body 2 together through a bolting assembly 7. Specifically, the cathode tank body 1 and the anode tank body 2 are provided with positioning holes, and the bolt rods on the bolting assembly 7 pass through the positioning holes of the cathode tank body 1 and the anode tank body 2 and are locked with nuts. An annularly distributed sealing gasket 6 is provided between the adjacent cathode tank body 1 and the anode tank body 2. Since the cathode tank body 1 and the anode tank body 2 have the same structure in this embodiment, the sealing gasket 6 is distributed along the edge of the cathode tank body 1 and the anode tank body 2, forming a "mouth"-shaped structure and enclosing the ion membrane 5 and the plate inside. An insulating plate 3 is provided between the pressing plate 4 and the adjacent cathode tank body 1 (or the anode tank body) to prevent the pressing plate from conducting electricity. In this embodiment, an embedded groove can be provided on the sealing gasket 6, and the side of the ion membrane 5 is embedded in the embedded groove to achieve the positioning of the ion membrane. Through the above structural design, after being pressed by the pressing plate 4, the anode tank body 2 and the cathode tank body 1 on both sides of the ion membrane 5 are connected to each other to perform electrolytic reaction.

[0026] The utility model adopts titanium alloy anode and cathode tanks, which have good corrosion resistance and thermal conductivity, and well solve the problems of aging after long-term use and high local temperature. Temperature sensors are arranged on the outside of the anode and cathode tanks, which can well monitor the temperature of the electrolyte. The temperature is easy to control, and the problem of abnormal electrolysis is well solved, which improves the electrolysis efficiency. At the same time, the anode and cathode tanks are used as shells and electrodes, and the inside of the shell is used as a reaction chamber, which has a long service life. With the same electrolysis area, the production capacity is increased by 30%, and the electrolysis efficiency is high. The use of sealing gaskets solves the problem of ion membrane rupture during disassembly, and disassembly and assembly are convenient.

[0027] 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. An electrolytic cell for tetrapropylammonium hydroxide, characterized in that: It comprises staggered cathode cell bodies and anode cell bodies made of titanium alloy, an ion membrane is arranged between adjacent anode cell bodies and cathode cell bodies, anode cell bodies and cathode cell bodies on both sides of the ion membrane are provided with pole plates with mesh structures, the pole plates are connected with the inner cavities of the corresponding anode cell bodies and cathode cell bodies; each cathode cell body and anode cell body is provided with an independent liquid inlet and outlet, pressure plates are respectively arranged on the outer sides of the cathode cell body and the anode cell body, the two pressure plates fix the cathode cell body and the anode cell body together by a bolting assembly, an insulating plate is arranged between the pressure plate and the adjacent cathode cell body or anode cell body, a ring-shaped distributed sealing gasket is arranged between the adjacent cathode cell body and anode cell body, and the ion membrane and the pole plate are located in the enclosed area of ​​the sealing gasket.

2. The electrolytic cell according to claim 1, characterized in that: The sealing gasket is provided with an embedding groove, and the side edge of the ion membrane is embedded in the embedding groove.

3. The electrolytic cell according to claim 1, characterized in that: The electrode plate on the anode tank body is an anode plate, and the anode plate and the anode tank body are integrally formed; the electrode plate on the cathode tank body is a cathode plate, and the cathode plate and the cathode tank body are integrally formed.

4. The electrolytic cell according to claim 1, characterized in that: The liquid inlet on the cathode tank body is located below the cathode tank body, and the liquid outlet on the cathode tank body is located above the cathode tank body.

5. The electrolytic cell according to claim 1, characterized in that: The liquid inlet on the anode tank body is located below the anode tank body, and the liquid outlet on the cathode tank body is located above the cathode tank body.

6. The electrolytic cell according to claim 1, characterized in that: A positioning plate is arranged on the periphery of the cathode tank body and the anode tank body, and a plurality of positioning holes for the bolting components to pass through are distributed on the positioning plate.

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