Chlor-alkali ion-exchange membrane electrolyzer

Abstract

The utility model relates to chlor alkali ion membrane electrolytic cell, including base (1), mount (2), tank body (3) and clean brush device (4), and mount sets up on the base. Tank body sets up on the mount, and the inside of tank body is divided into cathode chamber and anode chamber by metal carbon steel net, and the position of cathode conductive copper bar (32) is set up on the position of cathode chamber on tank body lateral wall, and the position of anode conductive copper bar (33) is set up on the position of anode chamber. Metal carbon steel net installs ion exchange membrane, and clean brush device (4) includes power mechanism, connecting rod (42) and cleaning brush (43), and power mechanism sets up on the mount. The upper end of connecting rod is connected with power mechanism, and the lower end extends to the top of tank body, and cleaning brush sets up in the lower end of connecting rod. The utility model can clean the impurity on the lateral wall outside tank body quickly.

Description

Technical Field

[0001] This utility model relates to chlor-alkali ion membrane electrolyzers, and more particularly to the structure of chlor-alkali ion membrane electrolyzers. Background Technology

[0002] The chlor-alkali industry refers to the industrial production of sodium hydroxide, chlorine, and hydrogen through the electrolysis of saturated sodium chloride solution, using these as raw materials to manufacture a series of chemical products. A chlor-alkali ion-exchange membrane electrolyzer is a device that uses an ion-exchange membrane to divide the electrolyzer into an anode and a cathode chamber. A potential difference is created between the anode and cathode by electrolyzing a saturated sodium chloride solution. An oxidation reaction occurs at the anode to produce chlorine, while a reduction reaction occurs at the cathode to produce hydrogen. Compared to traditional diaphragm electrolysis technology, ion-exchange membrane electrolysis technology has advantages such as low energy consumption, high product purity, and less environmental pollution.

[0003] Currently, common chlor-alkali ion exchange membrane electrolyzers typically consist of an electrolyzer frame, anode assembly, cathode assembly, and ion exchange membrane. Due to the involvement of high-concentration salt solutions, highly corrosive gases, and high current densities during the electrolysis process, scale, crystal deposits, and impurity accumulation are easily generated on the surface of the electrolyzer and its supporting structure. If not cleaned in time, this will lead to increased polarization and resistance on the ion exchange membrane surface, affecting electrolysis efficiency and even causing local overheating or corrosion, thus shortening the service life of the equipment.

[0004] Existing methods typically involve manual cleaning. Due to the large size of the electrolytic cell, the cleaning process is cumbersome and wastes a lot of time, leading to downtime and affecting production efficiency. Furthermore, manual cleaning may involve contact with corrosive electrolytes or high-voltage equipment, causing accidents and injuries to operators.

[0005] The purpose of this invention is to provide a chlor-alkali ion membrane electrolyzer that does not require manual cleaning, thus solving the problem of cumbersome cleaning of existing chlor-alkali ion membrane electrolyzers. Summary of the Invention

[0006] To address the aforementioned problems, this utility model provides a chlor-alkali ion exchange membrane electrolyzer, comprising a base 1, a fixing frame 2, a tank body 3, and a cleaning device 4. The fixing frame 2 is mounted on the base 1. The tank body 3 is mounted on the fixing frame 2, and its interior is divided into a cathode chamber and an anode chamber by a metal carbon steel mesh. A cathode conductive copper rod 32 is mounted on the side wall of the tank body 3 at the position of the cathode chamber, and an anode conductive copper rod 33 is mounted at the position of the anode chamber. An ion exchange membrane is installed on the metal carbon steel mesh. The cleaning device 4 includes a power mechanism 41, a connecting rod 42, and a cleaning brush 43. The power mechanism 41 is mounted on the fixing frame 2. The upper end of the connecting rod 42 is connected to the power mechanism 41, and the lower end extends above the tank body 3. The cleaning brush 43 is located at the lower end of the connecting rod 42 and is used to clean impurities on the outer wall of the tank body 3 under the drive of the power mechanism 41.

[0007] This invention utilizes a cleaning device 4, which includes a power mechanism 41, a connecting rod 42, and a cleaning brush 43. The power mechanism 41 is mounted on a fixed frame 2. The upper end of the connecting rod 42 is connected to the power mechanism 41, and the lower end extends above the tank body 3. The cleaning brush 43 is positioned at the lower end of the connecting rod 42. Driven by the power mechanism 41, the cleaning brush 43 moves back and forth, quickly cleaning impurities on the outer wall of the tank body 3. This solves the problems of cumbersome cleaning and potential operator injury associated with existing chlor-alkali ion exchange membrane electrolyzers.

[0008] Preferably, the power mechanism 41 includes a track 411, a drive motor 413, a lead screw 414, and a sliding seat 415. The track 411 is cylindrical, with an axially extending sliding opening 412 on its bottom surface. The track 411 is fixedly mounted on the fixed frame 2, located above the groove 3. The drive motor 413 is mounted on the fixed frame 2, located at one end of the track 411. The lead screw 414 is located inside the track 411, with one end rotatably connected to one end of the track 411 and the other end fixedly connected to the output shaft of the drive motor 413. The sliding seat 415 is located inside the track 411, sleeved on the lead screw 414, and can slide within the track 411. The upper end of the connecting rod 42 is fixedly connected to the sliding seat 415, and the lower end extends through the sliding opening 412 to below the track 411.

[0009] Therefore, when the drive motor 413 drives the lead screw 414 to rotate, it can drive the sliding seat 415 to slide back and forth in the track 411, thereby driving the cleaning brush 43 to slide back and forth along the tank 3 to scrape the impurities on the outer wall of the tank 3.

[0010] Preferably, the trough 3 is a cylindrical shell, the cleaning brush 43 is a ring corresponding to the trough 3 and is sleeved on the outside of the trough 3, and the inner side of the cleaning brush 43 is provided with bristles 431.

[0011] By setting a circular cleaning brush 43 with bristles 431 on the inner side of the cleaning brush 43, the cleaning brush 43 is driven to reciprocate by the power mechanism 41. The bristles 431 can clean the outer wall of the tank 3 in all directions, improving the cleaning efficiency.

[0012] Preferably, the cleaning brush 43 is provided with an annular spray ring 44, and the spray ring 44 is provided with multiple sprayers 441. By providing the spray ring 44 on the cleaning brush 43 and providing multiple sprayers 441 on the spray ring 44, when cleaning the tank 3, the spray ring 44 is connected to a fresh water pipe, and fresh water is sprayed onto the side wall of the tank 3 through the sprayers 441, which can speed up the cleaning efficiency.

[0013] Preferably, the power mechanism 41 further includes a limiting rod 416, which is fixedly disposed within the track 411. The sliding seat 415 is sleeved on the limiting rod 416 and can slide along the limiting rod 416. By providing the limiting rod 416 within the track 411, the sliding seat 415 is sleeved on the limiting rod 416, and the limiting rod 416 can limit the sliding seat 415, allowing it to slide along the track 411 but preventing it from rotating within the track 411.

[0014] Preferably, guide rails 11 are provided on both the left and right sides of the top surface of the base 1, and a movable seat 12 is provided on the guide rail 11. Multiple limiting sockets are provided on the guide rail 11. The movable seat 12 can slide along the guide rail 11. A wire frame 13 and a fixing pin 14 are provided on the movable seat 12. The lower end of the wire frame 13 is fixedly connected to the movable seat 12, and the upper end is provided with an arc-shaped support groove 131. The fixing pin 14 is inserted into the limiting socket to fix the movable seat 12.

[0015] By setting a guide rail 11 on the base 1, setting a slider on the guide rail 11, and setting a wire frame 13 on the slider, the wire frame 13 can support the cable 16 connected to the cathode conductive copper rod 32 and the anode conductive copper rod 33, preventing the cable 16 from hanging down to the ground and avoiding the risk of loosening, falling off or short circuit of the joint due to the swing of the wire or water accumulation on the ground.

[0016] Preferably, the system also includes a wastewater tank 15, which is fixedly mounted on the base 1 and located below the tank body 3. By providing the wastewater tank 15 on the base 1, the cleaning water can be discharged into the cleaning tank when cleaning the tank body 3, thus preventing environmental pollution. Attached Figure Description

[0017] Figure 1 Schematic diagram of the overall structure of a chlor-alkali ion-exchange membrane electrolyzer; Figure 2 Schematic diagram of the cleaning brush structure; Figure 3 Schematic diagram of the internal structure of the track; Figure 4 Schematic diagram of the arc-shaped support groove and cable connection.

[0018] In the diagram, 1. Base, 11. Guide rail, 12. Movable seat, 13. Wire frame, 131. Arc-shaped support groove, 14. Fixing pin, 15. Wastewater tank, 16. Cable, 2. Fixing frame, 3. Tank body, 32. Cathode conductive copper rod, 33. Anode conductive copper rod, 4. Cleaning device, 41. Power mechanism, 411. Track, 412. Sliding port, 413. Drive motor, 414. Lead screw, 415. Sliding seat, 416. Limiting rod, 42. Connecting rod, 43. Cleaning brush, 431. Brush bristles, 44. Spray ring, 441. Sprayer. Detailed Implementation

[0019] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figure 1 As shown, the chlor-alkali ion membrane electrolyzer includes a base 1, a fixing frame 2, a tank body 3, and a cleaning device 4, all mounted on the base 1.

[0021] On the top surface of the base 1, guide rails 11 extending in the left and right directions are provided on both sides of the groove 3. Movable seats 12 are provided on the guide rails 11, and multiple limiting slots (not shown in the figure) are provided on the guide rails 11 at equal intervals in the left and right directions.

[0022] The movable base 12 can slide along the guide rail 11 in the left and right directions. The movable base 12 is provided with a wire guide frame 13 and a fixing pin 14. The lower end of the wire guide frame 13 is fixedly connected to the movable base 12, and the upper end is provided with an arc-shaped support groove 131 (see reference). Figure 4 The fixed pin 14 is inserted into the limiting socket to fix the movable seat 12.

[0023] By setting a guide rail 11 on the base 1, setting a slider on the guide rail 11, and setting a wire frame 13 on the slider, the distance between the wire frame 13 and the groove can be adjusted according to the cable length requirements. The arc-shaped support groove 131 on the wire frame 13 can support and fix the cable 16 connected to the cathode conductive copper rod 32 and the anode conductive copper rod 33, preventing the cable 16 from hanging and falling to the ground, and avoiding the risk of loosening, falling off or short circuit of the joint due to wire swing or water accumulation on the ground.

[0024] A wastewater tank 15 is installed on the top surface of the base 1, below the tank body 3. The wastewater tank 15 is fixedly installed on the base 1, located below the tank body 3. By installing the wastewater tank 15 on the base 1, the cleaning water can be discharged into the cleaning tank when cleaning the tank body 3, preventing environmental pollution.

[0025] The tank 3 is a cylindrical shell, mounted on the fixed frame 2, and extends in the left and right direction. The cavity inside the tank 3 is divided into a cathode chamber and an anode chamber by a metal carbon steel mesh. A cathode conductive copper rod 32 is installed on the side wall of the tank 3 at the position of the cathode chamber, and an anode conductive copper rod 33 is installed at the position of the anode chamber. An ion exchange membrane (not shown in the figure) is installed on the metal carbon steel mesh.

[0026] A carbon steel mesh serves as the supporting structure for the electrolytic electrode. An ion exchange membrane is vertically installed between the anode conductive copper rod 33 and the cathode conductive copper rod 32 to separate the anode and cathode chambers, enabling selective ion migration. The ion exchange membrane has unidirectional permeability, allowing sodium ions to pass through while preventing the diffusion of chloride ions and neutral molecules such as hydrogen and chlorine. This effectively avoids the mixing of anode and cathode products and improves the purity of chlor-alkali products.

[0027] The external power supply system supplies power to the anode conductive copper rod 33 and the cathode conductive copper rod 32 through cable 16. The anode is connected to the positive terminal and the cathode is connected to the negative terminal, forming a stable DC electric field.

[0028] In the anode chamber, the electrolyte is a saturated sodium chloride solution. Under the action of a DC electric field, chloride ions migrate towards the anode and undergo a discharge reaction to generate chlorine gas. The generated chlorine gas is discharged through a pipe and enters the subsequent gas recovery system. In the cathode chamber, the ion exchange membrane allows sodium ions to pass through, while hydroxide ions are blocked. Water molecules undergo a reduction reaction at the cathode to generate hydrogen gas and hydroxide ions. The generated hydrogen gas is discharged through a pipe, while the hydroxide ions combine with the migrated sodium ions to form a sodium hydroxide solution.

[0029] like Figure 1 and Figure 2 As shown, the cleaning device 4 includes a power mechanism 41, a connecting rod 42, and a cleaning brush 43. The power mechanism 41 is mounted on the fixed frame 2.

[0030] The upper end of the connecting rod 42 is connected to the power mechanism 41, and the lower end extends to the top of the tank 3. The cleaning brush 43 is located at the lower end of the connecting rod 42. Driven by the power mechanism 41, the cleaning brush 43 cleans the impurities on the outer wall of the tank 3.

[0031] The cleaning brush 43 is an annular ring corresponding to the tank body 3, and is fitted onto the outside of the tank body 3. Brush bristles 431 are provided on the inner side of the cleaning brush 43. An annular spray ring 44 is provided on the cleaning brush 43, and multiple sprayers 441 are provided on the spray ring 44. A connection port for connecting to a freshwater pipe is provided on the spray ring 44.

[0032] By setting a circular cleaning brush 43 with bristles 431 on its inner side, and driving the cleaning brush 43 to reciprocate through a power mechanism 41, the bristles 431 can thoroughly clean the outer wall of the tank 3, improving cleaning efficiency. When cleaning the tank 3, connecting the spray ring 44 to a fresh water pipe and spraying fresh water onto the side wall of the tank 3 through a sprayer 441 can further accelerate the cleaning process and improve the cleaning effect.

[0033] like Figure 1 and Figure 3 As shown, the power mechanism 41 includes a track 411, a drive motor 413, a lead screw 414, a limit rod 416, and a sliding seat 415. The track 411 is cylindrical, with an axially extending sliding opening 412 on its bottom surface, forming a space inside to accommodate the sliding of the sliding seat 415. The track 411 is fixedly mounted on the fixed frame 2, located above the groove 3, and extends in the left and right direction.

[0034] The drive motor 413 is mounted on the fixed frame 2 and located at one end of the track 411.

[0035] The sliding seat 415 is disposed in the track 411 and can slide in the left and right directions within the track 411. The sliding seat 415 is provided with a threaded hole corresponding to the lead screw 414 and a limiting hole corresponding to the limiting rod 416.

[0036] The upper end of the connecting rod 42 is fixedly connected to the sliding seat 415, and the lower end extends through the sliding opening 412 to the bottom of the track 411, with the lower end located above the groove 3.

[0037] The lead screw 414 is located inside the track 411 and extends in the left and right direction. One end is rotatably connected to one end of the track 411, the middle part passes through the threaded hole of the sliding seat 415, and the other end is fixedly connected to the output shaft of the drive motor 413.

[0038] The limiting rod 416 is fixedly installed inside the track 411, extends in the left and right direction, and is fixedly connected to both ends of the track 411. The middle part passes through the limiting hole of the sliding seat 415, so that the sliding seat 415 can slide along the limiting rod 416.

[0039] Therefore, when the drive motor 413 drives the lead screw 414 to rotate, it can drive the sliding seat 415 to slide back and forth within the track 411, thereby driving the cleaning brush 43 to slide reciprocally along the tank 3. The bristles 431 on the cleaning brush 43 scrape away impurities on the outer wall of the tank 3. By setting a limiting rod 416 within the track 411, the sliding seat 415 is fitted onto the limiting rod 416. The limiting rod 416 can limit the sliding seat 415, allowing it to slide along the track 411 but preventing it from rotating within the track 411.

[0040] This utility model features a cleaning device 4, which includes a power mechanism 41, a connecting rod 42, and a cleaning brush 43. The power mechanism 41 is mounted on a fixed frame 2. The upper end of the connecting rod 42 is connected to the power mechanism 41, and the lower end extends through the sliding opening 412 to the bottom of the track 411. The cleaning brush 43 is located at the lower end of the connecting rod 42. When the drive motor 413 drives the lead screw 414 to rotate, it can drive the sliding seat 415 to slide back and forth in the track 411, thereby driving the cleaning brush 43 to slide back and forth along the tank 3. The bristles 431 on the cleaning brush 43 scrape the impurities on the outer wall of the tank 3.

[0041] The cleaning brush 43 is circular, with bristles 431 on its inner side. When the power mechanism 41 drives the cleaning brush 43 to reciprocate, the bristles 431 can clean the outer wall of the tank 3 from all directions, improving cleaning efficiency. While cleaning the tank 3, the spray ring 44 is connected to a fresh water pipe, and fresh water is sprayed onto the side wall of the tank 3 through the sprayer 441, which can further accelerate the cleaning efficiency and improve the cleaning effect.

[0042] It should be noted that the above embodiments are illustrative of the present invention and not intended to limit the present invention.

Claims

1. Chlor-alkali membrane electrolyzer, characterized in that, It includes a base (1), a fixing frame (2), a trough (3), and a cleaning device (4). The fixing frame (2) is mounted on the base (1); The tank (3) is mounted on the fixed frame (2). The inside of the tank (3) is divided into a cathode chamber and an anode chamber by a metal carbon steel mesh. A cathode conductive copper rod (32) is mounted on the side wall of the tank (3) at the position of the cathode chamber, and an anode conductive copper rod (33) is mounted at the position of the anode chamber. An ion exchange membrane is installed on the metal carbon steel mesh; The cleaning device (4) includes a power mechanism (41), a connecting rod (42), and a cleaning brush (43). The power mechanism (41) is mounted on the fixed frame (2); The upper end of the connecting rod (42) is connected to the power mechanism (41), and the lower end extends to the top of the groove (3); The cleaning brush (43) is located at the lower end of the connecting rod (42) and is used to clean impurities on the outer wall of the tank (3) under the drive of the power mechanism (41).

2. A chlor-alkali ion-exchange membrane electrolyzer according to claim 1, characterized in that The power mechanism (41) includes a track (411), a drive motor (413), a lead screw (414), and a sliding seat (415). The track (411) is cylindrical, with an axially extending sliding opening (412) on the bottom surface. The track (411) is fixedly mounted on the fixing frame (2) and located above the trough (3). The drive motor (413) is mounted on the fixed frame (2) and located at one end of the track (411); The lead screw (414) is located inside the track (411), with one end rotatably connected to one end of the track (411) and the other end fixedly connected to the output shaft of the drive motor (413); The sliding seat (415) is disposed inside the track (411) and sleeved on the lead screw (414), and can slide inside the track (411); The upper end of the connecting rod (42) is fixedly connected to the sliding seat (415), and the lower end extends through the sliding port (412) to the bottom of the track (411).

3. The chlor-alkali ion-exchange membrane electrolyzer according to claim 2, characterized in that The trough (3) is a cylindrical shell; The cleaning brush (43) is a ring corresponding to the groove (3) and is sleeved on the outside of the groove (3). The inner side of the cleaning brush (43) is provided with bristles (431).

4. A chlor-alkali ion-exchange membrane electrolyzer according to claim 3, characterized in that The cleaning brush (43) is provided with an annular spray ring (44). The spray ring (44) is provided with multiple sprayers (441).

5. A chlor-alkali ion-exchange membrane electrolyzer according to claim 4, characterized in that The power mechanism (41) also includes a limit rod (416). The limiting rod (416) is fixedly installed inside the track (411); The sliding seat (415) is sleeved on the limiting rod (416) and can slide along the limiting rod (416).

6. A chlor-alkali ion-exchange membrane electrolyzer according to claim 5, characterized in that Guide rails (11) are provided on both the left and right sides of the top surface of the base (1). A movable seat (12) is provided on the guide rail (11), and multiple limit ports are provided on the guide rail (11); The movable seat (12) can slide along the guide rail (11), and the movable seat (12) is provided with a wire frame (13) and a fixing pin (14). The lower end of the conductor frame (13) is fixedly connected to the movable seat (12), and the upper end is provided with an arc-shaped support groove (131). The fixing pin (14) is inserted into the limiting socket to fix the movable seat (12).

7. The chlor-alkali ion-exchange membrane electrolyzer according to any one of claims 1 to 6, characterized in that It also includes a wastewater tank (15). The wastewater tank (15) is fixedly arranged on the base (1) and located below the tank body (3).

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