Cathode and anode net improved electrolytic bath
By adopting the design of rectangular grooves and pole mesh bars in the electrolytic tank and combined with the use of turbulent plates, the problems of pole mesh bars and bubble breakage caused by electrolyte flow are solved, and a more stable electrolytic process and normal electrolyte temperature management are achieved.
Patent Information
- Application Number
- CN202510563432.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-06-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the electrolyte flows, the surface of the pole mesh ribs will be subjected to a greater impact, causing large vibrations in the entire cathode mesh, which is prone to deformation such as concave or protrusions.
The improved electrolytic tank uses rectangular grooves instead of the original inclined grooves, and replaces the pole mesh rib strips with pole mesh rib strips, adding a barrier to stabilize the position of the pole mesh rib strips. At the same time, a turbulent plate is designed to extend the flow displacement time of the bubbles on the surface to achieve the breaking of the bubbles.
Through the design of the improved electrolytic cell, the vibration of the pole mesh ribs in the electrolyte flow is reduced, the fluctuations of the anode mesh are reduced, and deformation is avoided. At the same time, the bubbles in the electrolyte are effectively crushed to prevent local temperatures from being too high.
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Figure CN120158754A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of electrolytic cells, and particularly relates to an improved electrolytic cell with anode and cathode grids. Background Art
[0002] The chlor-alkali industry produces chlorine (Cl2), hydrogen (H2), and sodium hydroxide (NaOH) by electrolyzing saturated brine (NaCl solution), and the core equipment is the electrolytic cell; while the alkyl water electrolysis industry is used to produce high-purity hydrogen (H2) and oxygen (O2), and the electrolyte is an alkaline solution (such as 20 - 30% KOH). The core equipment for implementing this process is also the electrolytic cell; whether it is the electrolytic cell used in the chlor-alkali industry or the alkyl water electrolysis industry, the core equipment electrolytic cell used is an alkaline water electrolytic cell; During the operation of the electrolytic cell, generally, ion exchange occurs between the anode and cathode grids through the electrolyte. Oxidation and reduction reactions occur on the surfaces of the anode and cathode grids respectively. For example, on the surface of the anode grid, oxidation reactions occur: anions (such as Cl⁻, OH⁻) are oxidized to generate gases (Cl2, O2) or metal oxides; on the surface of the cathode grid, reduction reactions occur, and cations (such as H⁺, Na⁺) are reduced to generate gases (H2) or metal deposition (such as electroplating), etc. Please refer to Figure 3 and Figure 5 , in the related art, most of the anode and cathode grids are of this structural form: the anode and cathode grid includes a grid body, and the grid body includes a plurality of pole grid rib pieces 21 arranged and distributed. Positioning holes 23 are opened on the surface of the pole grid rib pieces 21. By passing a pull rod through the positioning holes 23 opened on the surfaces of a plurality of pole grid rib pieces 21 at the same time, a plurality of pole grid rib pieces 21 are connected to construct the framework of the grid body; at the same time, a plurality of inclined grooves 26 are opened vertically and horizontally on one side of the pole grid rib piece 21, and a pole grid rib body 27 is arranged inside the inclined grooves 26; the opened inclined grooves 26 are 45° downward inclined notches, and the pole grid rib body 27 arranged inside the inclined grooves 26 is a cuboid structure; When assembling this anode and cathode grid, generally, the pole grid rib body 27 is obliquely inserted into the linearly arranged inclined grooves 26 opened on the 21-. Since the arranged pole grid rib body 27 is a cuboid structure, the contact area with the electrolyte can be increased, and the electrolysis reaction efficiency can be improved. At the same time, since the pole grid rib body 27 is installed at an angle of 45°, when the electrolyte flows through the surface of the anode and cathode grid, it will have a certain cutting effect on the bubbles in the electrolyte, causing them to break, so that the bubbles generated during the electrolysis process can mix the electrolyte with high heat and the electrolyte with low heat, and it is not easy to cause the local temperature of the electrolyte to be too high, ensuring the normal operation of the electrolytic cell. However, the problems and defects of the anode and cathode grids in this structural form are also obvious. Restricted by the inclined installation of the grid rib body 27, the contact area with the electrolyte will be increased, and when the electrolyte flows, it will cause a large impact on the surface of the grid rib body 27, and then cause a large vibration of the entire anode and cathode grid. It is easy for the anode and cathode grid to be deformed such as concave or convex due to the pressure fluctuation in the electrolytic cell. In view of the problems in the above-mentioned background technology, the present invention aims to provide an improved electrolytic cell with anode and cathode grids. Summary of the Invention
[0003] The present invention provides an improved electrolytic cell with anode and cathode grids, aiming to solve the problems in the above-mentioned background technology that when the electrolyte flows, it will cause a large impact on the surface of the grid rib body 27, and then cause a large vibration of the entire anode and cathode grid, and it is easy for the anode and cathode grid to be deformed such as concave or convex due to the pressure fluctuation in the electrolytic cell.
[0004] The present invention is realized as follows. An improved electrolytic cell with anode and cathode grids, the improved electrolytic cell with anode and cathode grids includes: A frame, which is the frame of the entire improved electrolytic cell with anode and cathode grids; wherein, an anode grid and a cathode grid are symmetrically installed on both sides of the frame respectively. The structure of the anode grid is the same as that of the cathode grid. The cathode grid includes a plurality of grid rib sheets arranged and distributed. Positioning holes are formed on the surface of the grid rib sheets; at the same time, a plurality of rectangular grooves are formed in the upper and lower parts on one side of the grid rib sheets. Grid rib columns are placed inside the rectangular grooves, and a retaining edge is formed inside the rectangular grooves. An anode chamber and a cathode chamber are formed between the frame, the anode grid and the cathode grid. The anode chamber and the cathode chamber are separated by a composite plate; a cathode assembly is formed inside the cathode chamber. The cathode assembly includes a cathode disk and a cathode rib plate. The cathode disk is located on one side of the composite plate, and cathode turbulence plates are arranged and distributed between the cathode disk and the composite plate; one end of the cathode rib plate is connected to the cathode disk, and the other end of the cathode rib plate is welded and fixed to the cathode grid.
[0005] As a further solution of the present invention: an anode assembly is formed inside the anode chamber. The anode assembly includes an anode rib plate and an anode disk. The anode disk is located on one side of the composite plate, and anode turbulence plates are arranged and distributed between the anode disk and the composite plate; one end of the anode rib plate is connected to the anode disk, and the other end of the anode rib plate is welded and fixed to the anode grid, and a plurality of anode rib plates located inside the anode chamber are connected by positioning rods.
[0006] As a further solution of the present invention: a plurality of cathode rib plates installed inside the cathode chamber are connected by a cathode elastic sheet, and one side of the cathode elastic sheet is in contact with the cathode grid; at the same time, an elastic support sheet is also installed between the cathode grid and the composite plate.
[0007] As a further aspect of the present invention: The cathode turbulence plate includes a positioning disc, an upper flow plate, and a lower flow plate. The upper flow plate and the lower flow plate are respectively installed between two positioning discs, and the lower flow plate and the upper flow plate are installed in a vertically offset distribution between the two positioning discs. Among them, a turbulence groove is formed between the upper flow plate and the lower flow plate, the turbulence groove has a V-shaped groove structure, and protrusions are distributed and installed on the inner wall surface of the turbulence groove.
[0008] Compared with the prior art, the beneficial effects of the present invention are: The improved electrolytic cell with anode and cathode grids has the following advantages compared with the current electrolytic cell: It replaces the inclined grooves opened vertically on one side of the grid rib for assembling the cathode grid with rectangular grooves, and replaces the grid rib strips obliquely installed inside the original inclined grooves with grid rib columns placed inside the rectangular grooves. In this way, opening rectangular grooves on one side of the grid rib facilitates the quick alignment and calibration for placing the grid rib columns, making the assembly efficiency of the entire cathode grid high. And because the cross-sectional area of the grid rib columns is smaller, and they are stably placed horizontally inside the rectangular grooves, when subjected to the impact force generated by the flowing electrolyte, the fluctuation amplitude is small, and it is not easy to cause large fluctuations in the entire anode and cathode grid. Moreover, designed as grid rib columns, less material is used, saving costs. In addition, in order to ensure the elimination effect of the bubbles generated by the flowing electrolyte during the operation of the electrolytic cell crane, a turbulence plate is also provided. The designed turbulence plate can extend the lifting and flowing displacement time of the electrolyte bubbles on its surface, realizing the operation of impacting and breaking the electrolyte bubbles on the outside. In this way, it can effectively ensure the breaking operation of the electrolyte bubbles generated during the operation of the electrolytic cell, making the bubbles generated during the electrolysis process mix the electrolyte with high heat and the electrolyte with low heat, and it is not easy to cause local overheating of the electrolyte, ensuring the normal progress of the electrolysis operation of the electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic structural diagram of an improved electrolytic cell with anode and cathode grids of the present invention.
[0010] Figure 2 It is a schematic structural diagram of the cathode turbulence plate of an improved electrolytic cell with anode and cathode grids of the present invention.
[0011] Figure 3 It is a schematic structural diagram of the cathode grid of an improved electrolytic cell with anode and cathode grids of the present invention.
[0012] Figure 4 It is an assembly schematic diagram of the cathode grid of an improved electrolytic cell with anode and cathode grids of the present invention.
[0013] Figure 5 It is an assembly schematic diagram of the cathode grid of an electrolytic cell in the prior art.
[0014] In the figure: 1 - frame, 2 - anode mesh, 3 - anode chamber, 4 - anode rib plate, 5 - positioning rod, 6 - anode disc, 7 - anode turbulence plate, 8 - composite plate, 9 - cathode chamber, 10 - cathode elastic sheet, 11 - cathode rib plate, 12 - cathode disc, 13 - cathode turbulence plate, 14 - elastic support sheet, 15 - cathode mesh, 16 - positioning disc, 17 - upper flow plate, 18 - protrusion, 19 - lower flow plate, 20 - turbulence groove, 21 - pole mesh rib piece, 22 - pole mesh rib column, 23 - positioning hole, 24 - rectangular groove, 25 - edge stop, 26 - inclined groove, 27 - pole mesh rib body. Specific embodiments
[0015] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.
[0016] Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.
[0017] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.
[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0019] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0020] Please refer to Figures 1-4, the present invention provides a technical solution: an improved electrolytic cell with anode and cathode grids, the improved electrolytic cell with anode and cathode grids includes: A frame 1, the frame 1 is the frame of the entire improved electrolytic cell with anode and cathode grids, and is used to construct other components for assembling the improved electrolytic cell with anode and cathode grids; Wherein, an anode grid 2 and a cathode grid 15 are symmetrically installed on both sides of the frame 1 respectively. The structural composition of the anode grid 2 is the same as that of the cathode grid 15. The cathode grid 15 includes a plurality of pole grid rib pieces 21 arranged and distributed. Positioning holes 23 are formed on the surface of the pole grid rib pieces 21. By passing a pull rod through the positioning holes 23 formed on the surfaces of a plurality of pole grid rib pieces 21 at the same time, a plurality of pole grid rib pieces 21 are connected to construct the frame of the cathode grid 15; at the same time, a plurality of rectangular grooves 24 are formed in the upper and lower parts on one side of the pole grid rib piece 21. Pole grid rib columns 22 are placed inside the rectangular grooves 24, and a retaining edge 25 is formed inside the rectangular grooves 24. The retaining edge 25 formed inside the rectangular grooves 24 is used to clamp the pole grid rib columns 22 placed inside the rectangular grooves 24; and a plurality of pole grid rib columns 22 are arranged on the frame of the cathode grid 15 constructed by a plurality of pole grid rib pieces 21 to complete the assembly of the cathode grid 15; An anode chamber 3 and a cathode chamber 9 are formed between the frame 1, the anode grid 2 and the cathode grid 15. The anode chamber 3 and the cathode chamber 9 are separated by a composite plate 8; a cathode assembly is formed inside the cathode chamber 9. The cathode assembly includes a cathode disk 12 and a cathode rib plate 11. The cathode disk 12 is located on one side of the composite plate 8, and cathode turbulence plates 13 are arranged and distributed between the cathode disk 12 and the composite plate 8; one end of the cathode rib plate 11 is connected to the cathode disk 12, and the other end of the cathode rib plate 11 is welded and fixed to the cathode grid 15; an anode assembly is formed inside the anode chamber 3. The anode assembly includes an anode rib plate 4 and an anode disk 6. The anode disk 6 is located on one side of the composite plate 8, and anode turbulence plates 7 are arranged and distributed between the anode disk 6 and the composite plate 8; one end of the anode rib plate 4 is connected to the anode disk 6, and the other end of the anode rib plate 4 is welded and fixed to the anode grid 2, and a plurality of anode rib plates 4 located inside the anode chamber 3 are connected by a positioning rod 5; In an embodiment of the present invention, the anode mesh 2 and the cathode mesh 15 that are assembled into an electrolytic cell are simultaneously improved in structural design. For example, a plurality of rectangular grooves 24 are provided in the upper and lower sides of the mesh rib sheet 21 of the cathode mesh 15. The mesh rib column 22 is placed inside the rectangular groove 24, and a retaining edge 25 is formed inside the rectangular groove 24. The retaining edge 25 formed inside the rectangular groove 24 is used to clamp the mesh rib column 22 placed inside the rectangular groove 24. And a plurality of mesh rib columns 22 are arranged on the frame of the cathode mesh 15 constructed by a plurality of mesh rib sheets 21 to complete the assembly of the cathode mesh 15. The rectangular groove 24 is provided on one side of the mesh rib sheet 21, which is convenient for quickly aligning and placing the mesh rib column 22, making the assembly efficiency of the entire cathode mesh 15 high, and the mesh rib column 22 is designed with less material, saving costs; In addition, by installing an anode turbulence plate 7 inside the anode chamber 3 and designing a cathode turbulence plate 13 inside the cathode chamber 9, the designed turbulence plate can extend the rising and flowing displacement time of the electrolyte bubbles on its surface, and realize the operation of impacting and breaking the electrolyte bubbles on the outside. In this way, it can effectively ensure the breaking operation of the electrolyte bubbles generated during the operation of the electrolytic cell, and make the high-temperature electrolyte and low-temperature electrolyte mixed by the bubbles generated during the electrolysis process, which is not easy to cause local overheating of the electrolyte and ensure the normal operation of the electrolytic cell electrolysis operation; Please refer to Figure 1 , in an embodiment of the present invention, a plurality of cathode rib plates 11 installed inside the cathode chamber 9 are connected by a cathode elastic sheet 10, and one side of the cathode elastic sheet 10 is in contact with the cathode mesh 15; at the same time, an elastic support sheet 14 is also installed between the cathode mesh 15 and the composite plate 8; When the electrolyte inside the cathode chamber 9 fluctuates and causes a fluctuating stamping pressure on the surface of the cathode rib plate 11, the combined action of the provided cathode elastic sheet 10 and the elastic support sheet 14 can achieve damping and shock absorption for the electrolyte with large fluctuations, reduce the pressure generated when the electrolyte flows, and at the same time reduce the problems of deformation such as concave or convex of the cathode mesh 15; (the electrode substrate (titanium, nickel mesh), that is, the cathode mesh 15, is welded to the cathode rib plate 11, and the distance between the cathode rib plates 11 is large, and the cathode mesh 15 is prone to problems such as concave or convex deformation due to the pressure fluctuation in the electrolytic cell); Please refer to Figure 2 , in an embodiment of the present invention, the cathode turbulence plate 13 includes a positioning disk 16, an upstream plate 17 and a downstream plate 19. The upstream plate 17 and the downstream plate 19 are respectively installed between the two positioning disks 16, and the downstream plate 19 and the upstream plate 17 are installed in a vertically staggered manner between the two positioning disks 16; wherein, a turbulence groove 20 is formed between the upstream plate 17 and the downstream plate 19, the turbulence groove 20 has a V-shaped groove structure, and protrusions 18 are distributed on the inner wall surface of the turbulence groove 20; In an embodiment of the present invention, when the electrolyte generating bubbles enters the inside of the turbulent flow tank 20 formed by the upper flow plate 17 and the lower flow plate 19, since the formed turbulent flow tank 20 has a V-shaped groove structure, the electrolyte entering the inside of the turbulent flow tank 20 can accelerate the flow. During the flow process, the bubbles can be broken by hitting the protrusions 18 distributed on the inner wall surface of the turbulent flow tank 20, and it will not cause the mixing of the electrolyte with high heat and the electrolyte with low heat generated by the bubbles during the electrolysis process, resulting in too high local temperature of the electrolyte and unable to ensure the normal progress of the electrolysis operation of the electrolytic cell; The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An improved anode and cathode network electrolyzer, comprising: The frame (1) is the frame of the entire anode and cathode network improved electrolytic cell; it is characterized by: An anode mesh (2) and a cathode mesh (15) are symmetrically mounted on both sides of the frame (1), and the structural composition of the anode mesh (2) is the same as that of the cathode mesh (15); The cathode net (15) comprises a plurality of pole mesh rib sheets (21) arranged and distributed, and a positioning hole (23) is provided on the surface of the pole mesh rib sheet (21); at the same time, a plurality of rectangular grooves (24) are provided on one side of the pole mesh rib sheet (21) in an upper and lower distribution, and pole mesh rib columns (22) are placed inside the rectangular grooves (24), and retaining edges (25) are formed inside the rectangular grooves (24); an anode chamber (3) and a cathode chamber (9) are formed between the frame (1), the anode net (2) and the cathode net (15), and the anode chamber (3) and the cathode chamber (9) are separated by a composite plate (8); A cathode assembly is formed inside the cathode chamber (9), the cathode assembly comprising a cathode disk (12) and a cathode rib plate (11), the cathode disk (12) being located on one side of the composite plate (8), and a cathode turbulence plate (13) being arranged and installed between the cathode disk (12) and the composite plate (8); one end of the cathode rib plate (11) is connected to the cathode disk (12), and the other end of the cathode rib plate (11) is welded and fixed to the cathode mesh (15).
2. The improved anode and cathode network electrolytic cell according to claim 1, characterized in that: An anode assembly is formed inside the anode chamber (3), the anode assembly comprising an anode rib plate (4) and an anode disk (6), the anode disk (6) being located on one side of the composite plate (8), and an anode turbulence plate (7) being arranged and installed between the anode disk (6) and the composite plate (8); one end of the anode rib plate (4) is connected to the anode disk (6), and the other end of the anode rib plate (4) is welded and fixed to the anode mesh (2), and a plurality of anode rib plates (4) located inside the anode chamber (3) are connected via positioning rods (5).
3. The improved anode and cathode network electrolytic cell according to claim 1, characterized in that: A plurality of cathode rib plates (11) installed inside the cathode chamber (9) are connected via a cathode elastic sheet (10), one side of the cathode elastic sheet (10) is in contact with the cathode mesh (15); and an elastic support sheet (14) is also installed between the cathode mesh (15) and the composite plate (8).
4. The improved anode and cathode network electrolytic cell according to claim 1, characterized in that: The cathode turbulence plate (13) comprises a positioning plate (16), an upstream plate (17) and a downstream plate (19), wherein the upstream plate (17) and the downstream plate (19) are respectively installed between the two positioning plates (16), and the downstream plate (19) and the upstream plate (17) are installed in an up-and-down dislocation arrangement between the two positioning plates (16); wherein a turbulence groove (20) is formed between the upstream plate (17) and the downstream plate (19), the turbulence groove (20) being in a V-shaped groove structure, and protrusions (18) are installed on the inner wall surface of the turbulence groove (20).