Ionic membrane electrolysis device
By installing guides and overflow sections in the electrolysis chamber, the blockage problem caused by salt compounds entrained during gas discharge from the electrolytic cell was solved, achieving more efficient gas-liquid separation and electrolysis efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2026-03-10
AI Technical Summary
In the electrolytic cell, the gas discharge may be entrained with salt compounds, causing blockage of the gas outlet and affecting normal electrolysis operations.
A flow guide is installed in the electrolysis chamber. An overflow section is provided at the end of the flow guide near the gas outlet to guide the electrolyte into the second chamber. The overflow section blocks the entrained salt compound gas-liquid mixture to prevent it from precipitating at the gas outlet.
This improves the gas-liquid separation effect of the electrolyzer, prevents salt compounds from clogging the gas outlet, ensures smooth gas discharge, and improves electrolysis efficiency.
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Figure CN121629425A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrolytic cell technology, and more particularly to an ion membrane electrolysis device. Background Technology
[0002] Tetramethylammonium hydroxide is a colorless crystal that is highly hygroscopic, has a certain ammonia odor, is strongly alkaline, and can rapidly absorb carbon dioxide in the air to form carbonates, which are strong organic bases and highly corrosive.
[0003] In related technologies, tetramethylammonium salt is generally used as the electrolytic raw material, and tetramethylammonium hydroxide is obtained by electrolysis in an electrolytic cell containing an ion exchange membrane. During the synthesis of electronic-grade tetramethylammonium hydroxide, oxygen is generated at the anode and hydrogen is generated at the cathode of the electrolytic cell. Under prolonged electrolysis, the gas content in the electrolyte increases, leading to an increase in voltage within the electrolytic cell and higher energy consumption. Therefore, a gas outlet is usually installed in the electrolytic cell to discharge the gas.
[0004] However, because the gas carries salt compounds during the discharge process, these salt compounds can easily precipitate at the gas outlet and block it, affecting the normal electrolysis operation. Summary of the Invention
[0005] This application provides an ion-exchange membrane electrolysis device to solve the problem in related technologies where salt compounds are easily entrained during gas discharge, leading to blockage of the gas outlet.
[0006] The ion-exchange membrane electrolysis apparatus provided in this application includes:
[0007] An electrolysis chamber is provided with an ion membrane, which is used to divide the electrolysis chamber into an anode chamber and a cathode chamber. At least one of the cathode chamber and the anode chamber is provided with a gas outlet. Each of the cathode chamber and the anode chamber is provided with an electrode plate.
[0008] A flow guide is disposed in at least one of the cathode chamber and the anode chamber to divide at least one of the cathode chamber and the anode chamber into a first cavity and a second cavity, wherein the electrode plate is disposed in the first cavity and the second cavity is disposed adjacent to the ion membrane;
[0009] The guide member has at least one overflow section at one end near the gas outlet, and the overflow section is configured to guide the electrolyte in the first cavity into the second cavity.
[0010] In some possible implementations, the anode chamber and the cathode chamber are each provided with a flow guide, and the flow guides in the cathode chamber and the anode chamber are symmetrically arranged.
[0011] In some possible implementations, both the cathode chamber and the anode chamber are provided with a liquid inlet and a liquid outlet at their lower ends;
[0012] The lower end of the flow guide in the cathode chamber is located between the liquid inlet and the liquid outlet of the cathode chamber, and the lower end of the flow guide in the anode chamber is located between the liquid inlet and the liquid outlet of the anode chamber.
[0013] In some possible implementations, the guide is positioned at an angle that gradually tilts upwards toward the adjacent electrode along the height direction.
[0014] In some possible implementations, it also includes:
[0015] A blocking portion is provided at the upper end of at least one of the cathode chamber and the anode chamber, the blocking portion having a guide surface protruding toward the overflow portion, and the gas outlet being located on the side of the blocking portion closer to the first cavity.
[0016] In some possible implementations, the flow guide is provided with at least two overflow sections, and the height of the at least two overflow sections gradually decreases along the flow direction of the electrolyte.
[0017] In some possible implementations, the blocking portion is provided with an auxiliary exhaust port on the side near the second cavity, and the auxiliary exhaust port is provided corresponding to the overflow portion near the second cavity.
[0018] In some possible implementations, the overflow section is a cofferdam that protrudes upwards along the height direction.
[0019] In some possible implementations, the guide element is a plastic plate.
[0020] In some possible implementations, a filter demister is provided at the gas outlet.
[0021] The ion-exchange membrane electrolysis device provided in this application embodiment has an ion-exchange membrane in the electrolysis chamber, which is used to divide the electrolysis chamber into an anode chamber and a cathode chamber. At least one of the cathode chamber and the anode chamber has a gas outlet. Both the cathode chamber and the anode chamber are provided with electrode plates. A flow guide is provided in at least one of the cathode chamber and the anode chamber to divide at least one of the cathode chamber and the anode chamber into a first cavity and a second cavity. The first cavity has an electrode plate. The second cavity is disposed adjacent to the ion-exchange membrane. At least one overflow portion is provided at the end of the flow guide near the gas outlet. The overflow portion is configured to guide the electrolyte in the first cavity into the second cavity.
[0022] Therefore, during the electrolysis process of the electrolyte, under the influence of gravity, the gas generated by electrolysis is discharged through the gas outlet, while the gas-liquid mixture containing salt compounds is blocked by the overflow part of the guide plate, forming a buffer, and is guided along the guide to enter the second chamber for ion exchange, which improves the gas-liquid separation effect of the electrolytic cell. In addition, since the gas-liquid mixture containing salt compounds is buffered by the overflow part, it can also prevent salt compounds from precipitating at the gas outlet and blocking the gas outlet, ensuring the smooth discharge of gas. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0024] Figure 1 This is a schematic diagram of the ion-exchange membrane electrolysis device in the embodiments of this application.
[0025] Explanation of reference numerals in the attached figures
[0026] 100 - Anode chamber;
[0027] 101 - First deflector plate;
[0028] 102-Anode inlet; 103-Anode outlet; 104-Anode plate; 105-First gas outlet; 106-First auxiliary exhaust port; 107-First blocking part; 108-First guiding surface;
[0029] 109 - Overflow section; 1091 - First overflow section; 1092 - Second overflow section;
[0030] 200-Cathode chamber;
[0031] 201 - Second deflector;
[0032] 202-Cathode inlet; 203-Cathode outlet; 204-Cathode plate; 205-Second gas outlet; 206-Second auxiliary exhaust port; 207-Second blocking part; 208-Second guide surface;
[0033] 300-ion membrane.
[0034] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0036] As described in the background section, tetramethylammonium bicarbonate (TMAC) is a raw material for the electrolytic preparation of tetramethylammonium hydroxide (TMAH). TMAH is a strong organic base that easily decomposes into methanol and trimethylamine upon heating. Because TMAH is highly alkaline and leaves no residue after heating and decomposition, especially no conductive ionic substances, it is widely used as a developer in the manufacturing processes of liquid crystal displays, LEDs, and semiconductor chips.
[0037] The current mainstream technology for producing TMAH uses tetramethylammonium salt as the electrolytic raw material. Tetramethylammonium hydroxide is obtained through electrolysis in an electrolytic cell containing an ion-exchange membrane. In the electrolytic cell used to synthesize electronic-grade TMAH, oxygen is generated in the anode chamber and hydrogen in the cathode chamber. The increase in gas content in the electrolyte raises the overall resistance of the electrolytic cell, increasing energy consumption and severely impacting electrolysis efficiency. Therefore, a gas outlet is typically installed to discharge the gases produced during electrolysis. However, because the gases carry salt compounds during discharge, these compounds can easily precipitate at the gas outlet, clogging it and affecting normal electrolysis operations.
[0038] Based on the above description, one or more embodiments of this application provide an ion membrane electrolysis device, wherein an ion membrane is provided in the electrolysis chamber to divide the electrolysis chamber into an anode chamber and a cathode chamber, at least one of the cathode chamber and the anode chamber is provided with a gas outlet, and an electrode plate is provided in both the cathode chamber and the anode chamber; a flow guide is provided in at least one of the cathode chamber and the anode chamber to divide at least one of the cathode chamber and the anode chamber into a first cavity and a second cavity, the first cavity is provided with an electrode plate, the second cavity is disposed adjacent to the ion membrane, and at least one overflow portion is provided at the end of the flow guide near the gas outlet, the overflow portion being configured to guide the electrolyte in the first cavity into the second cavity.
[0039] Therefore, during the electrolysis process of the electrolyte, under the influence of gravity, the gas generated by electrolysis is discharged through the gas outlet, while the gas-liquid mixture containing salt compounds is blocked by the overflow part of the guide plate, forming a buffer, and is guided along the guide to enter the second chamber for ion exchange, which improves the gas-liquid separation effect of the electrolytic cell. In addition, since the gas-liquid mixture containing salt compounds is buffered by the overflow part, it can also prevent salt compounds from precipitating at the gas outlet and blocking the gas outlet, ensuring the smooth discharge of gas.
[0040] The ion-exchange membrane 300 electrolysis apparatus of this application will be described below with reference to the accompanying drawings.
[0041] like Figure 1 As shown, the ion exchange membrane 300 electrolysis device of this application embodiment includes an electrolysis chamber and a flow guide.
[0042] The electrolysis chamber is equipped with an ion membrane 300, which divides the electrolysis chamber into an anode chamber 100 and a cathode chamber 200. At least one of the cathode chamber 200 and the anode chamber 100 is provided with a gas outlet. Both the cathode chamber 200 and the anode chamber 100 are provided with electrode plates. A flow guide is provided in at least one of the cathode chamber 200 and the anode chamber 100 to divide at least one of the cathode chamber 200 and the anode chamber 100 into a first cavity and a second cavity. The first cavity is provided with electrode plates, and the second cavity is provided adjacent to the ion membrane 300. At least one overflow portion 109 is provided at the end of the flow guide near the gas outlet. The overflow portion 109 is configured to guide the electrolyte in the first cavity into the second cavity.
[0043] With the above-mentioned settings, during the electrolysis of the electrolyte, the gas generated by electrolysis is discharged through the gas outlet due to the influence of gravity. The gas-liquid mixture containing salt compounds is blocked by the overflow part 109 of the guide plate, forming a buffer. It is then guided along the guide to enter the second chamber for ion exchange, which improves the gas-liquid separation effect of the electrolytic cell. In addition, since the gas-liquid mixture containing salt compounds is buffered by the overflow part 109, it can also prevent salt compounds from precipitating at the gas outlet and blocking the gas outlet, ensuring the smooth discharge of gas.
[0044] In the ion-exchange membrane 300 electrolysis apparatus of this application embodiment, the actual gas produced by electrolysis will vary depending on the product prepared. Here, this application embodiment takes the preparation of tetramethylammonium hydroxide by electrolysis of tetramethylammonium bicarbonate aqueous solution as an example. During the electrolysis preparation of tetramethylammonium hydroxide, carbon dioxide, hydrogen, and oxygen are generated in the electrolytic cell, and carbon dioxide, hydrogen, and oxygen are discharged through the gas outlet.
[0045] Furthermore, in the embodiments of this application, directional terms such as "upper end" and "lower end" are used with reference to... Figure 1 The orientation of the ion-exchange membrane 300 electrolysis unit is illustrated in the diagram. Figure 1 In this configuration, the gas outlet is located at the upper end of the anode chamber 100 and the cathode chamber 200, while the anode inlet 102, anode outlet 103, cathode inlet 202, and cathode outlet 203 are located at the lower end. The following will refer to these configurations. Figure 1 The orientations shown are explained. Furthermore, in the embodiments of this application, "upstream side" refers to the first contact side along the flow direction of the electrolyte, and "downstream side" refers to the last contact side along the flow direction of the electrolyte.
[0046] Since the gas outlet is located at the top and the electrolyte inlet and outlet are located at the bottom, when the electrolyte enters the anode chamber 100 or the cathode chamber 200, the gas generated by electrolysis will be discharged through the gas outlet due to the pressure and gravity inside the anode chamber 100 or the cathode chamber 200. Under the action of gravity, the gas-liquid mixture is more likely to come into contact with the overflow section 109 to form a buffer, thereby facilitating the overflow section 109 to capture the droplets of the gas-liquid mixture and prevent the droplets from entering the gas outlet and blocking the gas outlet.
[0047] like Figure 1 As shown in the embodiment of this application, the flow guide includes a first flow guide plate 101 and a second flow guide plate 201. The first flow guide plate 101 is disposed in the anode chamber 100, and the second flow guide plate 201 is disposed in the cathode chamber 200. The first flow guide plate 101 and the second flow guide plate 201 are symmetrically arranged.
[0048] The first guide plate 101 in the anode chamber 100 and the second guide plate 201 in the cathode chamber 200 are both made of fluoroplastics. Specifically, the fluoroplastics can be polytetrafluoroethylene (PTFE) or perfluoroalkoxy alkane (PFA). Fluoroplastics have good chemical stability and high temperature resistance, and can resist the corrosive effects of strong acids, strong alkalis and salt solutions in the electrolyte. They also remain stable at high temperatures, thus avoiding affecting the electrolysis operation.
[0049] In some embodiments, such as Figure 1 As shown, the ion exchange membrane 300 is a cation exchange membrane. The ion exchange membrane 300 has high selectivity, allowing cations to pass through while blocking anions. The ion exchange membrane 300 can be a fluorinated polymer membrane or a polystyrene sulfonic acid membrane, as long as it can achieve selective permeation.
[0050] 300-segment ion exchange membrane formation Figure 1 The anode chamber 100 and cathode chamber 200 are provided, wherein an anode plate 104 is provided in the anode chamber 100, and an anode inlet 102 and an anode outlet 103 are provided at the lower end of the anode chamber 100. The end of the first guide plate 101 is located between the anode inlet 102 and the anode outlet 103.
[0051] For example, the anolyte is typically a tetramethylammonium bicarbonate solution, and the anode plate 104 can be a titanium-based coated anode, such as a ruthenium titanium oxide coated anode. Titanium-based coated anodes have excellent corrosion resistance and electrocatalytic activity, making them suitable for operation in strong oxidizing environments and effectively reducing anode corrosion and electrolyte contamination.
[0052] In the anode chamber 100, a tetramethylammonium bicarbonate solution meeting the required concentration is introduced through the anode inlet 102. The tetramethylammonium bicarbonate is electrolyzed in the anode chamber 100 to generate tetramethylammonium ions (TMA). + ) and bicarbonate ions (HCO3) - Tetramethylammonium ions migrate through ion membrane 300 to cathode chamber 200.
[0053] Since the end of the first guide plate 101 is located between the anode inlet 102 and the anode outlet 103, the first guide plate 101 divides the anode chamber 100 into a first cavity and a second cavity. The electrolyte entering the first cavity through the anode inlet 102 follows the guidance of the first guide plate 101, passes through the overflow section 109, and then enters the second cavity, thereby causing tetramethylammonium ions to migrate through the ion exchange membrane 300 to the cathode chamber 200. Here, the first cavity and the second cavity are arranged left and right, separated by the first guide plate 101.
[0054] In addition, a cathode plate 204 is provided inside the cathode chamber 200, and a cathode inlet 202 and a cathode outlet 203 are provided at the lower end of the cathode chamber 200. The end of the second guide plate 201 is located between the cathode inlet 202 and the cathode outlet 203.
[0055] For example, the cathode electrolyte is typically a dilute solution of tetramethylammonium hydroxide or pure water. The cathode plate 204 can be made of stainless steel or nickel. Stainless steel and nickel have good electrical conductivity and corrosion resistance, making them suitable for operation in alkaline environments and effectively reducing cathode corrosion and electrolyte contamination.
[0056] In the cathode chamber 200, pure water is introduced through the cathode inlet 202. The water is electrolyzed in the cathode chamber 200 to generate hydroxide ions (OH-), which combine with the migrating tetramethylammonium ions (TMA+) to generate tetramethylammonium hydroxide (TMAH).
[0057] Since the end of the second guide plate 201 is located between the cathode inlet 202 and the cathode outlet 203, the second guide plate 201 divides the cathode chamber 200 into a third chamber and a fourth chamber. The electrolyte entering the third chamber through the cathode inlet 202 follows the guidance of the second guide plate 201, passes through the overflow section 109, and then enters the fourth chamber, thereby causing hydroxide ions (OH-) to combine with the migrating tetramethylammonium ions (TMA+) to form tetramethylammonium hydroxide (TMAH). Here, the third chamber and the fourth chamber are arranged left and right, separated by the second guide plate 201.
[0058] like Figure 1As shown, in some embodiments, the first guide plate 101 is gradually inclined toward the anode plate 104 along the height direction, and the second guide plate 201 is gradually inclined toward the cathode plate 204.
[0059] Therefore, the inclined first guide plate 101 and the second guide plate 201 can guide the bubbles generated during the electrolysis process to rise along the inclined surface, thereby reducing the residence time of the bubbles in the electrolyte.
[0060] Furthermore, since the first guide plate 101 divides the electrolyte cross-section in the anode chamber 100 into a gradually decreasing cross-section from bottom to top, and the second guide plate 201 divides the electrolyte cross-section in the cathode chamber 200 into a gradually decreasing cross-section from bottom to top, the channels for the bubbles gradually narrow during the rising process, which is conducive to the faster aggregation of bubbles and their rise to the liquid surface, thereby improving the gas-liquid separation efficiency.
[0061] like Figure 1 As shown, the ion membrane 300 electrolysis device in this embodiment of the application further includes a first blocking part 107 and a second blocking part 207.
[0062] The first blocking part 107 is disposed in the anode chamber 100. The first blocking part 107 has a first guiding surface 108 protruding toward the first guide plate 101. The first gas outlet 105 is formed on the side of the first blocking part 107 near the ion membrane 300. The second blocking part 207 is disposed in the cathode chamber 200. The second blocking part 207 has a second guiding surface 208 protruding toward the second guide plate 201. The second gas outlet 205 is formed on the side of the second blocking part 207 near the ion membrane 300.
[0063] In the above embodiments, the first blocking part 107 and the second blocking part 207 can be made of the same material as the guide plate. The first guiding surface 108 on the first blocking part 107 protrudes toward the first guide plate 101 and can guide the flow of the anolyte together with the overflow part 109 on the first guide plate 101. The second guiding surface 208 on the second blocking part 207 protrudes toward the second guide plate 201 and can guide the flow of the cathode electrolyte together with the overflow part 109 on the second guide plate 201, thereby improving the gas-liquid separation effect of the electrolyte.
[0064] Furthermore, the first blocking part 107 is provided with a first auxiliary exhaust port 106 on the side near the anode plate 104, and the second blocking part 207 is provided with a second auxiliary exhaust port 206 on the side near the cathode plate 204.
[0065] Depend on Figure 1As can be seen, taking the anode chamber 100 as an example, the first gas outlet 105 and the first auxiliary exhaust port 106 are respectively placed on the left and right sides of the first blocking part 107. During the transportation process, the anode electrolyte in the anode chamber 100 flows along the first guide plate 101 and undergoes initial gas-liquid separation at the first auxiliary exhaust port 106. The gas that is buffered and rises by the first overflow section 1091 is discharged from the first auxiliary exhaust port 106. After passing through the second overflow section 1092 of the first guide plate 101, it undergoes secondary gas-liquid separation at the first gas outlet 105. The residual gas is buffered and separated by the second overflow section 1092 and then discharged from the first gas outlet 105. The first auxiliary exhaust port 106 and the first gas outlet 105 form a secondary exhaust, which effectively enhances the gas-liquid separation effect.
[0066] In the cathode chamber 200, the second gas outlet 205 and the second auxiliary exhaust port 206 can be described with reference to the description of the first gas outlet 105 and the first auxiliary exhaust port 106 in the anode chamber 100.
[0067] In addition, in some embodiments, a filter demister is provided on the first gas outlet 105, the first auxiliary exhaust port 106, the second gas outlet 205 and the second auxiliary exhaust port 206. The filter demister can further remove droplets and foam entrained in the gas during the electrolysis process and prevent the gas outlet from being blocked.
[0068] like Figure 1 As shown, Figure 1 In the diagram, the arrows indicate the flow direction of the electrolyte. Both the gas outlet and the ion exchange membrane 300 are located downstream of the overflow section 109. This means that the electrolyte first passes through the overflow section 109 before contacting the ion exchange membrane 300 for ion exchange. The overflow section 109 prevents gas carrying droplets from directly entering the gas outlet, allowing the droplets to re-enter the electrolytic cell along the overflow section 109, thereby improving the overall gas-liquid separation effect.
[0069] In the above description, the overflow section 109 is a cofferdam that protrudes upward along the height direction.
[0070] Here, taking the first guide plate 101 as an example, the dam on the first guide plate 101 protrudes in the direction toward the first blocking part 107 to form a wave crest. The dam can guide and optimize the circulation path of the electrolyte and enhance the uniformity of the electrolysis reaction. In addition, during the flow of the electrolyte, after the gas carrying liquid is blocked and buffered by the dam, the gas rises normally and is discharged from the gas outlet. Under the action of gravity, the liquid flows back into the anode chamber 100 along the dam, thereby reducing the amount of gas carrying liquid discharged from the gas outlet and preventing the gas outlet from being blocked by the precipitation of salt compounds.
[0071] It should be noted that the height of the cofferdam should be lower than the circulating liquid level of the electrolyte to ensure the normal electrolysis process of the electrolyte.
[0072] As shown in the figure, in some embodiments, the guide plate is provided with at least two overflow portions 109, and the height of the at least two overflow portions 109 gradually decreases along the flow direction of the electrolyte. Here, the flow direction of the electrolyte is indicated by the arrow in the figure.
[0073] For example, the upper end of the guide plate is provided with a continuous first overflow section 1091 and a second overflow section 1092. The first overflow section 1091 and the second overflow section 1092 are connected in a continuous curved shape. Along the flow direction of the electrolyte, the height of the upstream overflow section 109, that is, the first overflow section 1091, is higher than the height of the downstream overflow section 109 (that is, the second overflow section 1092).
[0074] Thus, the two overflow sections 109 form a staged gas-liquid separation state. The first overflow section 1091 captures and separates most of the bubbles and droplets in the electrolyte, and the second overflow section 1092 further separates the remaining electrolyte bubbles and droplets. The electrolyte passes through the first overflow section 1091 and the second overflow section 1092 in sequence before undergoing ion exchange with the ion membrane 300, thereby enhancing the gas-liquid separation efficiency and ensuring that the droplets and foams entrained in the gas are fully separated.
[0075] Furthermore, since two overflow sections 109 at different heights are provided, the continuous curved surface formed between the two overflow sections 109 increases the buffer space in the anode chamber 100 or cathode chamber 200, promotes the convection of the electrolyte, enhances the mixing effect, and thus enhances the ion mobility of the electrolyte.
[0076] It should be noted that in some embodiments, the overflow section 109 can also be set to other quantities, which can be flexibly set according to the actual size of the electrolytic cell.
[0077] As can be seen from the above description, the structures of the first guide plate 101 and the second guide plate 201 are symmetrically arranged along the ion membrane 300. The first guide plate 101 and the second guide plate 201 are provided with the same number of overflow sections 109. This arrangement can ensure that the entire electrolysis process is uniform and efficient.
[0078] It should be noted that, in this embodiment of the application, the highest height of the overflow portion 109 on the first guide plate 101 and the second guide plate 201 should be lower than the overall liquid level of the electrolyte, so as to ensure that the electrolyte can flow effectively and exchange ions over the overflow portion 109.
[0079] In this application embodiment, an exemplary specification of an ion-exchange membrane electrolysis device is described as follows:
[0080] The distance between the ion exchange membrane 300 and the anode plate or cathode plate is 10cm. The horizontal distance between the lower end of the first guide plate 101 and the anode plate 104 is 7-9cm. The horizontal distance between the upper end of the first guide plate 101 and the anode plate 104 is 1-2cm. The height between the upper end of the first overflow section 1091 and the upper end of the anode plate 104 on the first guide plate 101 is 20-30cm. The height between the upper end of the second overflow section 1092 and the upper end of the anode plate 104 is 10-20cm. The thickness of the filter demister is 50-100mm.
[0081] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0082] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. An ion membrane electrolysis device, characterized by comprising: The application relates to an electrolysis chamber comprising: an electrolysis chamber provided with an ion film (300) for separating the electrolysis chamber into an anode chamber (100) and a cathode chamber (200), at least one of the cathode chamber (200) and the anode chamber (100) being provided with a gas outlet, and the cathode chamber (200) and the anode chamber (100) being provided with polar plates; a flow guide arranged in at least one of the cathode chamber (200) and the anode chamber (100) to separate at least one of the cathode chamber (200) and the anode chamber (100) into a first cavity and a second cavity, the first cavity being provided with the polar plates, and the second cavity being arranged adjacent to the ion film (300); wherein the flow guide is provided with at least one overflow part (109) at an end close to the gas outlet, and the overflow part (109) is configured to guide electrolyte in the first cavity into the second cavity.
2. The ion membrane electrolysis apparatus according to claim 1, characterized in that, The anode chamber (100) and the cathode chamber (200) are respectively provided with the flow guide, and the flow guides in the cathode chamber (200) and the anode chamber (100) are symmetrically arranged.
3. The ion membrane electrolysis apparatus according to claim 2, characterized in that The cathode chamber (200) and the anode chamber (100) are respectively provided with an inlet and an outlet at lower ends thereof; wherein the lower end of the flow guide in the cathode chamber (200) is located between the inlet and the outlet of the cathode chamber (200), and the lower end of the flow guide in the anode chamber (100) is located between the inlet and the outlet of the anode chamber (100).
4. The ion membrane electrolysis apparatus according to claim 2, characterized by In the height direction, the flow guide is gradually inclined towards the polar plate adjacent thereto.
5. The ion membrane electrolytic device according to claim 1, characterized by The application further comprises: a blocking part arranged at an upper end of at least one of the cathode chamber (200) and the anode chamber (100), the blocking part being provided with a guide surface protruding towards the overflow part (109), and the gas outlet being located on a side of the blocking part close to the first cavity.
6. The ion membrane electrolysis apparatus according to claim 5, characterized in that The flow guide is provided with at least two overflow parts (109), and the height of the at least two overflow parts (109) gradually decreases in the flow direction of the electrolyte.
7. The ion membrane electrolysis apparatus according to claim 6, characterized in that The blocking part is provided with an auxiliary exhaust port on a side close to the second cavity, and the auxiliary exhaust port is arranged corresponding to the overflow part (109) close to the second cavity.
8. The ion membrane electrolytic device according to any one of claims 1 to 7, characterized by The overflow part (109) is a cofferdam protruding upwards in the height direction.
9. The ion membrane electrolytic device according to any one of claims 1 to 7, characterized by The flow guide is a plastic plate.
10. The ion membrane electrolytic device according to any one of claims 1 to 7, characterized by The gas outlet is provided with a filter screen demister.