Hypochlorous acid and hydrogen peroxide synergistic electrochemical device as well as preparation method and application thereof

Abstract

The invention relates to the technical field of electrochemistry, in particular to a hypochlorous acid and hydrogen peroxide synergetic electrochemical device, a preparation method and application of the hypochlorous acid and hydrogen peroxide synergetic electrochemical device, and the hypochlorous acid and hydrogen peroxide synergetic electrochemical device comprises a shell, a liquid inlet and a liquid outlet. The shell is provided with an electrolyte cavity, a cathode reaction assembly located in the electrolyte cavity, an anode reaction assembly and a spoiler assembly used for increasing the liquid moving stroke, the cathode reaction assembly is used for generating hydrogen peroxide, the anode reaction assembly is used for generating hypochlorous acid, and the liquid inlet and the liquid outlet are located in the same side of the shell. The hydrogen peroxide and the hypochlorous acid can be directly generated in the electrolyte chamber through the cathode reaction assembly and the anode reaction assembly respectively, and mixing after respective preparation is not needed, so that the process is simplified, the cost is reduced, the synergism of the hypochlorous acid and the hydrogen peroxide is improved, the liquid moving stroke is increased through the spoiler assembly, and the efficiency is improved. The mixing effect is effectively improved, and the electrochemical reaction efficiency and uniformity are improved.

Description

Technical Field

[0001] The present invention relates to the field of electrochemical technology, in particular to a hypochlorous acid and hydrogen peroxide synergistic electrochemical device, a preparation method and application thereof. Background Art

[0002] Hypochlorous acid is a highly effective, broad-spectrum disinfectant that is widely used in tap water and swimming pool disinfection, medical device sterilization, and food processing and preservation. At present, the electrolytic method is mainly used in the industry to prepare hypochlorous acid. The basic principle is to generate free hypochlorous acid through an anodic oxidation reaction in an aqueous solution containing chloride ions (such as tap water and seawater). This method has the disadvantages of low electrolysis efficiency, high energy consumption, and severe equipment corrosion. Hydrogen peroxide, as another strong oxidizing liquid, also has excellent bactericidal and organic degradation properties. The electrolytic method is often used in the industry to prepare hydrogen peroxide. The principle is to introduce oxygen into the cathode surface, and an electrocatalytic reduction reaction of oxygen occurs to generate H 2 O 2 The main limitations of this method are low current efficiency, easy deactivation of cathode catalyst, and harsh reaction conditions.

[0003] However, when hypochlorous acid and hydrogen peroxide need to exist in the solution at the same time, users need to prepare hypochlorous acid and hydrogen peroxide separately and then mix them for use, which has problems such as cumbersome process, high cost, poor synergy, etc. Therefore, it is necessary to develop a hypochlorous acid and hydrogen peroxide synergistic electrochemical device, which can effectively produce hypochlorous acid and hydrogen peroxide through electrochemical reaction, and further meet the user's use needs of hypochlorous acid and hydrogen peroxide in the solution at the same time. Summary of the invention

[0004] In view of the above-mentioned technical problems that when hypochlorous acid and hydrogen peroxide need to be present in the solution at the same time, hypochlorous acid and hydrogen peroxide need to be prepared separately and then mixed for use, which has complicated processes, high costs and poor synergy, the technical solution adopted by the present invention to solve the technical problems is: A hypochlorous acid and hydrogen peroxide synergistic electrochemical device comprises a shell, a liquid inlet and a liquid outlet respectively connected to the shell, the shell is provided with an electrolyte chamber respectively connected to the liquid inlet and the liquid outlet, a cathode reaction component located in the electrolyte chamber, an anode reaction component, and a spoiler component for increasing the liquid movement stroke, the cathode reaction component is used to generate hydrogen peroxide, the anode reaction component is used to generate hypochlorous acid, and the liquid inlet and the liquid outlet are located on the same side of the shell.

[0005] Furthermore, in some embodiments of the present invention, the cathode reaction component includes a cathode electrode and a cathode electrode catalyst, the anode reaction component includes an anode electrode and an anode electrode catalyst, and the spoiler component is located between the cathode electrode and the anode electrode.

[0006] Furthermore, in some embodiments of the present invention, the spoiler assembly includes a first spoiler portion and a second spoiler portion, a limiting groove for limiting the cathode electrode or the anode electrode is provided between the first spoiler portion and the second spoiler portion, and an extension width of the first spoiler portion is greater than an extension width of the second spoiler portion.

[0007] Furthermore, in some embodiments of the present invention, the second spoiler and the inner wall of the electrolyte chamber form an aisle space, the first spoiler and the second spoiler are alternately arranged along the extension direction of the cathode reaction component or the anode reaction component, and a flow channel for liquid movement is provided between the alternately arranged first spoiler and the second spoiler, a plurality of the aisle spaces and the plurality of the flow channels form a reaction channel, and the reaction channel is arranged in a "bow" shape.

[0008] Furthermore, in some embodiments of the present invention, the cathode electrode and the anode electrode are respectively located on both sides of the reaction channel, the cathode electrode is located on the side away from the liquid inlet, the anode electrode is located on the side close to the liquid inlet, the liquid inlet is located on one side of the reaction channel, and the liquid outlet is located on the other side of the reaction channel.

[0009] Furthermore, in some embodiments of the present invention, the shell includes a first shell and a second shell, the liquid inlet and the liquid outlet are both located on the first shell, the first shell is provided with a first shell mounting portion, the second shell is provided with a second shell mating portion, the first shell mounting portion is matingly connected with the second shell mating portion so that the first shell and the second shell enclose the electrolyte chamber, and the liquid inlet and the liquid outlet are located on the same side of the first shell.

[0010] Further, in some embodiments of the present invention, the first shell is provided with a first positioning groove, the anode electrode is provided with an anode reaction plate connected to the limiting groove, and an anode conductive end connected to the anode reaction plate and one end of which protrudes to the outside of the first positioning groove; the second shell is provided with a second positioning groove, the cathode electrode is provided with a cathode reaction plate connected to the inner cavity of the second shell, and a cathode conductive end connected to the cathode reaction plate and one end of which protrudes to the outside of the second positioning groove; and the coverage area of ​​the cathode reaction plate is larger than that of the anode reaction plate.

[0011] Further, in some embodiments of the present invention, the spoiler assembly is located in the first shell, the limiting groove is located in the inner cavity of the first shell, and the first shell is provided with a fixing groove for limiting the anode reaction plate.

[0012] Furthermore, another object of the present invention is to provide a method for preparing hypochlorous acid and hydrogen peroxide by synergistic electrochemistry, comprising the following steps: S1, the anode reaction component and the cathode reaction component are connected to the positive electrode and the negative electrode of the external power supply respectively; S2. Under the action of an external water pump, the electrolyte is pumped into the electrolyte chamber from the liquid inlet, and a redox reaction occurs on the surface of the energized electrode. The hydrogen peroxide molecules produced by the cathode reaction component and the hypochlorous acid molecules produced by the anode reaction component are dissolved in the electrolyte; S3. The electrolyte containing hydrogen peroxide molecules and hypochlorous acid molecules moves along the spoiler assembly and flows out of the electrolyte chamber through the liquid outlet.

[0013] Furthermore, another object of the present invention is to provide an application of the method for synergistic electrochemical preparation of hypochlorous acid and hydrogen peroxide, and the prepared hypochlorous acid-hydrogen peroxide mixed solution is used in municipal and industrial water supply and drainage systems, or in the fields of medical care, or food processing.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention can directly realize the generation of hydrogen peroxide and hypochlorous acid in the electrolyte chamber through the cathode reaction component and the anode reaction component respectively, without the need to prepare them separately and then mix them, thereby simplifying the process, reducing costs, and improving the synergy of hypochlorous acid and hydrogen peroxide. The liquid movement stroke is increased by the spoiler component, which effectively improves the mixing effect, improves the efficiency and uniformity of the electrochemical reaction, simplifies the process flow, reduces costs, improves the convenience of operation, and can meet the user's use needs of hypochlorous acid and hydrogen peroxide in the solution at the same time.

[0015] 2. Compared with the traditional pharmaceutical preparation method, the preparation method of the present invention does not require separate preparation, storage and proportioning, the process flow is greatly simplified, the production and use costs are significantly reduced, the equipment safety and automation level are higher, and it is easy to achieve large-scale application.

[0016] 3. After the hypochlorous acid and hydrogen peroxide prepared by the present invention are mixed in situ through an electrochemical reaction, the two can undergo a synergistically amplified bactericidal oxidation reaction, and the killing ability of pathogenic microorganisms such as bacteria and viruses and the degradation performance of organic pollutants are greatly improved compared with using them alone. They can be widely used in municipal and industrial water supply and drainage systems, medical and health care, food processing and other industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the hypochlorous acid and hydrogen peroxide synergistic electrochemical device of the present invention.

[0018] Figure 2 for Figure 1 AA section view.

[0019] Figure 3 Explosion diagram of the hypochlorous acid and hydrogen peroxide synergistic electrochemical device of the present invention.

[0020] Figure 4 Explosion diagram of the hypochlorous acid and hydrogen peroxide synergistic electrochemical device of the present invention.

[0021] Figure 5 Explosion diagram of the hypochlorous acid and hydrogen peroxide synergistic electrochemical device of the present invention.

[0022] Figure 6 It is a top view of the first shell of the hypochlorous acid and hydrogen peroxide cooperative electrochemical device of the present invention.

[0023] Figure 7 This is the test data of Example 1.

[0024] Figure 8 This is the test data of Example 2. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 6 The hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown includes a shell 1, a liquid inlet 2 and a liquid outlet 3 respectively connected to the shell 1, the shell 1 is provided with an electrolyte chamber 4 respectively connected to the liquid inlet 2 and the liquid outlet 3, a cathode reaction component 5 located in the electrolyte chamber 4, an anode reaction component 6, and a spoiler component 7 for increasing the liquid movement stroke, the cathode reaction component 5 is used to generate hydrogen peroxide, and the anode reaction component 6 is used to generate hypochlorous acid.

[0027] The present invention can directly realize the generation of hydrogen peroxide and hypochlorous acid in the electrolyte chamber through the cathode reaction component and the anode reaction component respectively, without the need to prepare them separately and then mix them, thereby simplifying the process, reducing costs, and improving the synergy of hypochlorous acid and hydrogen peroxide. The liquid movement stroke is increased by the spoiler component, which effectively improves the mixing effect, improves the efficiency and uniformity of the electrochemical reaction, simplifies the process flow, reduces costs, improves the convenience of operation, and can meet the user's use needs of hypochlorous acid and hydrogen peroxide coexisting in the solution.

[0028] Further, as a preferred embodiment of the present invention but not limited thereto, the shell can provide the external structure of the entire electrochemical device to accommodate the internal components and protect them from the external environment, and provide a closed environment for electrochemical reactions. The shell material is corrosion-resistant and can withstand a highly oxidizing environment. The liquid inlet is used to introduce the electrolyte, and the liquid outlet is used to discharge the generated hydrogen peroxide and hypochlorous acid mixture, which can ensure smooth liquid flow, so that the liquid can be continuously processed when the electrochemical reaction is carried out inside the device. The cathode reaction assembly is located in the electrolyte chamber, and is used to pass oxygen on the cathode surface to generate hydrogen peroxide through the electrocatalytic reduction reaction of oxygen. The anode reaction assembly is located in the electrolyte chamber, and is used to generate hypochlorous acid on the anode surface through the oxidation reaction of chloride ions. The spoiler assembly is located in the electrolyte chamber, and is used to increase the movement path of the liquid and improve the fluid dynamics, thereby improving the reaction efficiency and product uniformity. Compared with the traditional method of step-by-step preparation and remixing, the operation of the present invention is simpler, reduces manual intervention and the use of complex equipment, and can reduce maintenance costs and overall operating expenses.

[0029] Specifically, the electrolyte is pumped into the electrolyte chamber from the inlet through the action of an external water pump, and a redox reaction occurs on the surface of the energized electrode. The hydrogen peroxide molecules produced by the cathode reaction component and the hypochlorous acid molecules produced by the anode reaction component melt into the electrolyte, and then flow out of the electrolyte chamber through the outlet with the flowing electrolyte. The electrolyte chamber is connected to the container through the outlet pipe, and the mixed liquid reacts with the object to be treated in the container. The liquid in the container enters the inlet from the inlet pipe and circulates again in the electrolyte chamber to react.

[0030] The present invention utilizes the oxidation reaction of chloride ions in tap water at the anode and the reduction reaction of dissolved oxygen at the cathode to realize the in-situ synergistic preparation of hypochlorous acid and hydrogen peroxide in the same electrolytic cell. The prepared mixed solution has excellent sterilization and organic pollutant degradation performance and can be widely used in domestic and industrial water treatment, medical and health, food processing and other fields.

[0031] like Figures 1 to 5The hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown, the cathode reaction component 5 includes a cathode electrode 51 and a cathode electrode catalyst, the anode reaction component 6 includes an anode electrode 61 and an anode electrode catalyst, and the spoiler assembly 7 is located between the cathode electrode 51 and the anode electrode 61. Further, as a preferred embodiment of the present invention but not limited thereto, the cathode electrode is made of a material with good electrical conductivity and strong chemical stability, such as platinum and platinum-plated titanium mesh. The cathode electrode catalyst is coated or loaded on the cathode electrode to reduce the activation energy of the cathode reaction and increase the reaction rate. In the process of preparing hydrogen peroxide, the cathode electrode catalyst can promote the reduction reaction of oxygen to generate hydrogen peroxide. Cathode electrode catalysts such as ruthenium-based composite oxides can effectively promote the electrolysis of water to produce active oxygen species, which are then converted into hydrogen peroxide, thereby ensuring that efficient hydrogen peroxide generation can be achieved at a lower potential, reducing energy consumption and improving product purity. The anode material is corrosion-resistant and can withstand a high oxidation potential, which is conducive to the generation of hypochlorous acid, such as titanium dioxide electrodes doped with iridium and ruthenium. The anode electrode catalyst is coated or loaded on the anode electrode to reduce the activation energy of the anode reaction and increase the reaction rate. In the process of preparing hypochlorous acid, the anode electrode catalyst promotes the oxidation of water molecules and directly generates hypochlorous acid on the anode surface or in the microenvironment, avoiding the occurrence of side reactions and increasing the yield of hypochlorous acid.

[0032] Specifically, the spoiler assembly is located between the cathode and the anode, and is used to increase the movement path of the liquid and improve the fluid dynamics, which helps to improve the transmission efficiency of the reactants, ensure that the chemical substances produced by the cathode and the anode can be effectively mixed and synergistic, and effectively enhance the efficiency and uniformity of the electrochemical reaction.

[0033] The present invention provides a new hypochlorous acid-hydrogen peroxide electrochemical reaction device with simple structure, high efficiency and energy saving, and integrated functions. It adopts special anode and cathode materials, and can continuously and stably prepare high-concentration mixed solutions at normal temperature and pressure without adding any chemical reagents. By controlling the electrochemical parameters and electrode structure, the concentration ratio of hypochlorous acid / hydrogen peroxide can be flexibly adjusted to meet the needs of different application occasions.

[0034] Compared with the traditional single preparation, the present invention can significantly reduce the equipment and operation costs, and improve the performance of sterilization and degradation of organic matter.

[0035] During the electrochemical reaction, the electrolyte flows continuously through the electrolyte chamber driven by the pump, and the reduction reaction of dissolved oxygen occurs on the cathode surface to generate hydrogen peroxide: O 2 + 2H + +2e - → H 2 O 2 E0 = 0.68 V At the same time, the oxidation reaction of chloride ions occurs on the anode surface to generate hypochlorous acid: Cl - + H 2 O → HClO + H + +2e - E0 = 1.49 V The cathode electrode structure is preferably a plate-like structure, and the electrode material is preferably a high specific surface area nickel foam, copper foam, carbon fiber felt, carbon fiber cloth, carbon paper, etc. The electrode surface is loaded with a high activity catalyst such as Pt, Pd, Fe-NC, etc. to improve the cathode reduction of O 2 Generate H 2 O 2 speed and efficiency.

[0036] The anode electrode structure is preferably a plate structure or a plate mesh structure similar to the cathode electrode. The electrode material is a titanium substrate or a carbon substrate. The electrode surface is coated with a metal oxide catalyst such as precious metal platinum, tin dioxide, ruthenium / iridium oxide, etc., to achieve efficient electrocatalytic oxidation of Cl - This produces HClO.

[0037] Among them, H generated by cathode reduction 2 O 2 The HClO produced by anodic oxidation dissolves in the electrolyte and is fully mixed in the reaction chamber and subsequent pipelines, resulting in the following synergistic bactericidal oxidation reaction: HClO + H 2 O 2 → O 2 + Cl - + H 2 O+ •OH Under the same acidic conditions, HClO and H 2 O 2 The reaction releases a strong oxidizing hydroxyl radical (•OH), which is similar to the reaction of HClO or H 2 O 2 In comparison, the mixed solution has significantly improved its ability to kill pathogenic microorganisms such as bacteria and viruses and its ability to degrade organic pollutants.

[0038] The concentration ratio of hypochlorous acid and hydrogen peroxide in the electrochemical process can be adjusted by controlling the current distribution between the anode and cathode, so that the ratio and performance of the mixed solution match the actual application.

[0039] The hypochlorous acid-hydrogen peroxide mixed solution prepared by the present invention can be directly used for disinfection and sterilization of drinking water, sewage, swimming pools, etc., as well as degradation and treatment of organic pollutants such as dyes and pesticides. Compared with traditional single agents, HClO / H 2 O 2The synergistic effect of active chlorine and active oxygen in the mixed liquid can double the sterilization and degradation effects and greatly improve the treatment efficiency, which is especially suitable for occasions with high concentrations of microbial pollution and organic pollutants.

[0040] like Figures 2 to 6 The hypochlorous acid and hydrogen peroxide cooperative electrochemical device shown, the spoiler assembly 7 includes a first spoiler 71 and a second spoiler 72, and a limiting groove 73 for limiting the cathode electrode 51 or the anode electrode 61 is provided between the first spoiler 71 and the second spoiler 72. Further, as a preferred embodiment of the present invention but not limited, the first spoiler and the second spoiler form a physical separation structure, forming a more complex flow path, increasing the turbulence of the liquid on the electrode surface, reducing the dead zone, guiding the electrolyte to flow around the electrode, thereby increasing the contact area and contact time between the electrolyte and the electrode surface, which can help the generated hypochlorous acid and hydrogen peroxide to be more effectively removed from the electrode surface, and be derived together with the flowing liquid, reducing the occurrence of side reactions, and effectively improving the efficiency and rate of the electrochemical reaction. Fluid guidance can also help control temperature and pressure, prevent local overheating or overpressure, and improve the safety of the entire device.

[0041] The limiting groove is arranged between the first spoiler and the second spoiler. The limiting groove not only provides a precise installation position for the cathode electrode or the anode electrode, ensuring that the electrode remains stable during the electrolysis process without displacement or vibration, but also reduces unnecessary electrolyte eddy currents by being designed to fit the electrode edge, further reducing energy loss, ensuring that the electrode is firmly fixed without affecting the uniform flow of the electrolyte. The limiting groove can simplify the removal and replacement process of the cathode electrode or the anode electrode. The cathode electrode or the anode electrode can be easily installed or removed according to the preset position, which is helpful for the maintenance of the equipment.

[0042] like Figures 2 to 6In the hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown, the second spoiler 72 forms a passage space 74 with the inner side wall of the electrolyte chamber 4, the first spoiler 71 and the second spoiler 72 are alternately arranged along the extension direction of the cathode reaction component 5 or the anode reaction component 6, and a flow channel 75 for liquid movement is provided between the alternately arranged first spoiler 71 and the second spoiler 72, and a plurality of the passage spaces 74 and the plurality of the flow channels 75 form a reaction channel 76. Further, as a preferred embodiment of the present invention but not limited thereto, the passage space formed by the second spoiler and the inner side wall of the electrolyte chamber not only provides a flow path for the electrolyte, but also increases the surface area of ​​the reaction area, so that more electrolyte molecules have the opportunity to contact the electrode surface and participate in the reaction. The passage space forms a "passive stirring" mechanism, which can maintain good mass transfer efficiency even at a lower flow rate. The alternating arrangement of the first spoiler and the second spoiler forms a well-arranged network of flow channels and passage spaces, which can better control the flow direction and speed of the liquid, ensure that the liquid is fully mixed, and improve the reaction efficiency. This layout causes the electrolyte to undergo a complex three-dimensional flow pattern as it passes through the device, forming a series of bends and recirculation zones, which increases the degree of turbulence, helps eliminate dead zones, and makes the reaction more uniform and thorough.

[0043] The combination of multiple passage spaces and flow channels constructs a highly interactive reaction channel system, which allows the electrolyte to repeatedly approach the electrode surface when passing through these channels, which not only promotes the conversion of reactants but also accelerates the diffusion of products. Such a setting helps to increase the reaction rate and the uniform distribution of products, and also helps to dissipate heat in time and maintain the stable operation of the electrochemical device. The setting of the first spoiler and the second spoiler can effectively control the electrolysis environment, reduce side reactions, and increase the yield and purity of the target products hypochlorous acid and hydrogen peroxide.

[0044] like Figures 2 to 6 In the hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown, the extension width of the first spoiler 71 is greater than the extension width of the second spoiler 72, and the reaction channel 76 is arranged in a "bow" shape. Further, as a preferred embodiment of the present invention but not limited thereto, the extension width of the first spoiler is greater than the second spoiler, which can effectively control the speed and direction of liquid flow and ensure that the liquid is fully mixed in the reaction channel. The wider first spoiler can slow down the flow rate of the electrolyte, provide a longer contact time and a larger mass transfer area, which is conducive to enhancing the reaction activity of the cathode or anode surface. The narrower second spoiler forms an aisle space with the inner wall of the electrolyte chamber, which helps to shape the flow of the electrolyte, promote the continuous replenishment of the new electrolyte and the rapid removal of the product, and avoid side reactions or catalyst poisoning caused by excessive local concentration. By controlling the speed and direction of the liquid flow, it is ensured that the liquid is fully mixed in the reaction channel.

[0045] The bow-shaped reaction channel forms a non-linear path, which increases the circuitous path of the electrolyte around the electrode and the effective surface area of ​​the electrolyte in contact with the electrode. It can not only enhance the mixing effect between the electrolyte and the electrode surface, but also produce a stronger turbulence effect, reduce the dead zone in the liquid flow, and make the reaction medium more evenly exposed to the electrochemical active area, thereby improving the uniformity and overall efficiency of the reaction. At the same time, this setting also helps to reduce energy loss, and the turbulence can effectively reduce the resistance formed during the electrolysis process.

[0046] like Figures 2 to 6 In the hypochlorous acid and hydrogen peroxide cooperative electrochemical device shown, the cathode electrode 51 and the anode electrode 61 are respectively located on both sides of the reaction channel 76, the cathode electrode 51 is located on the side away from the liquid inlet 2, the anode electrode 61 is located on the side close to the liquid inlet 2, the liquid inlet 2 is located on one side of the reaction channel 76, and the liquid outlet 3 is located on the other side of the reaction channel 76. Further, as a preferred embodiment of the present invention but not limited thereto, the cathode electrode and the anode electrode are respectively located on both sides of the reaction channel, and this layout helps to achieve effective separation and reaction during the electrolysis process.

[0047] Optionally, in some embodiments, when the coverage area of ​​the cathode electrode is larger than the coverage area of ​​the anode electrode, the cathode electrode is away from the liquid inlet relative to the anode electrode, and when the electrolyte enters the electrolyte chamber directly from the liquid inlet, the cathode electrode can be in contact with the fresh electrolyte first, which helps to first perform the reduction reaction to generate hydrogen peroxide. Although the anode electrode is close to the liquid inlet, the liquid needs to react with the cathode electrode first or fill the electrolyte chamber before reacting with the anode electrode, which helps to reduce the influence of the oxygen generated by the anode on the cathode reaction. Such a design is conducive to maintaining the stability and continuity of the chemical reaction in the channel.

[0048] Placing the liquid inlet and outlet on different sides of the reaction channel ensures that the liquid that has been fully electrolyzed can be discharged smoothly, which can help avoid blockage problems caused by sediment or bubble accumulation, thereby improving the reliability and continuity of the device.

[0049] like Figures 3 to 5 The hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown, the shell 1 includes a first shell 8 and a second shell 9, the liquid inlet 2 and the liquid outlet 3 are both located on the first shell 8, the first shell 8 is provided with a first shell mounting portion 80, the second shell 9 is provided with a second shell matching portion 90, the first shell mounting portion 80 is matched and connected with the second shell matching portion 90, so that the first shell 8 and the second shell 9 enclose the electrolyte chamber 4.

[0050] Further, as a preferred embodiment of the present invention but not limiting, the first shell and the second shell are connected together by matching to form an electrolyte chamber. Such a structural design makes the electrolyte chamber more stable, tight and reliable, provides a closed and safe environment for electrochemical reactions, and ensures the normal operation of the equipment and the efficient conduct of chemical reactions. The modular design makes the device easy to assemble and disassemble, and is convenient for maintenance. When the electrolyte chamber needs to be cleaned or inspected, the split design makes it easy to separate the shell and directly access the inside of the chamber for thorough cleaning or component replacement, which is crucial to maintaining the long-term efficient operation of the system and extending its service life. The liquid inlet and outlet are both located on the first shell. Such a layout helps the liquid flow along a specific path in the electrolyte chamber, thereby improving the reaction efficiency.

[0051] Optionally, in some embodiments, the first shell mounting portion and the second shell mating portion may be connected by one or a combination of methods such as snap connection, fastener connection, threaded connection, magnetic connection, mortise and tenon connection, and groove connection.

[0052] Specifically, in some embodiments, the first shell mounting portion is a snap-fit ​​portion, and the second shell matching portion is a connecting step portion, and the connection between the first shell and the second shell is achieved through a snap-fit ​​connection.

[0053] like Figures 2 to 6In the hypochlorous acid and hydrogen peroxide synergistic electrochemical device shown, the first shell 8 is provided with a first positioning groove 82, the anode electrode 61 is provided with an anode reaction plate 611 connected to the limiting groove 73, and an anode conductive end 612 connected to the anode reaction plate 611 and one end of which passes through the outside of the first positioning groove 82, the second shell 9 is provided with a second positioning groove 91, and the cathode electrode 51 is provided with a cathode reaction plate 511 connected to the inner cavity of the second shell 9, and a cathode conductive end 512 connected to the cathode reaction plate 511 and one end of which passes through the outside of the second positioning groove 91. Further, as a preferred embodiment of the present invention but not limited thereto, the first positioning groove and the second positioning groove can ensure the stable positioning and electrical connection of the anode conductive end and the cathode conductive end, and the setting of the first positioning groove and the second positioning groove allows the anode conductive end and the cathode conductive end to extend out of the shell, which is convenient for direct connection with the junction box or wire of the external circuit, simplifies the process of electrical connection, and also maintains the neatness and closedness of the internal structure, reducing the risk of electrolyte leakage. The cathode electrode is in close contact with the inner cavity of the second shell through the cathode reaction plate, ensuring the effective progress of the electrochemical reaction. The cathode reaction plate helps to increase the surface area of ​​the electrochemical reaction, thereby improving the efficiency of hydrogen peroxide generation. The cathode conductive end is connected to the cathode reaction plate and passes through the first positioning groove. Such a setting helps to achieve the electrical connection of the cathode electrode, facilitates the replacement and maintenance of the electrode, and also provides a stable mechanical support for the electrode, ensuring that the electrode will not be displaced by the flow of the electrolyte during the reaction. The anode electrode is fixed by a limiting groove, and the anode reaction plate is used to increase the contact area with the electrolyte, thereby improving the efficiency of hypochlorous acid generation. The anode conductive end is connected to the anode reaction plate and passes through the first positioning groove. Such a setting helps to achieve the electrical connection of the anode electrode, facilitates maintenance operations, and ensures that the position of the electrode is accurate and stable.

[0054] like Figures 2 to 6 In the hypochlorous acid and hydrogen peroxide cooperative electrochemical device shown, the spoiler assembly 7 is located in the first shell 8, the limiting groove 73 is located in the inner cavity of the first shell 8, and the first shell 8 is provided with a fixing groove 81 for limiting the anode reaction plate 611. Further, as a preferred embodiment of the present invention but not a limitation, the spoiler assembly, the limiting groove and the fixing groove are all designed in the inner cavity of the first shell, which can make the structure of the entire electrolyte chamber more compact and reduce the occupied space.

[0055] The setting of the limiting groove and the fixing groove can ensure the stability of the anode reaction plate during the reaction process, avoid the reduction of electrolysis efficiency or damage caused by position deviation, and help maintain the sealing to prevent electrolyte leakage, while also protecting the electrode from the influence of the external environment. Since all key components are located in the first shell, when performing equipment maintenance or replacing electrodes, it is easy to do so by simply opening the first shell without disassembling the entire device.

[0056] like Figures 2 to 5 In the hypochlorous acid and hydrogen peroxide cooperative electrochemical device shown, the liquid inlet 2 and the liquid outlet 3 are located on the same side of the first shell 8 , and the coverage area of ​​the cathode reaction plate 511 is larger than that of the anode reaction plate 611 .

[0057] In some embodiments, the cathode reaction plate may first directly react with the electrolyte in the liquid inlet.

[0058] The liquid inlet and outlet are located on the same side of the first shell, which simplifies the connection of external pipelines, allows the feed and discharge pipelines to be arranged centrally, facilitates installation and maintenance, reduces the use of pipe elbows and transition connectors, reduces fluid resistance and leakage points, and also helps to utilize compact space and reduce floor space.

[0059] The coverage area of ​​the cathode reaction plate is larger than that of the anode reaction plate in order to optimize the efficiency of the electrochemical reaction. During the electrolysis process, the cathode reaction is more active than the anode reaction or requires more surface area to support it. Increasing the cathode surface area can increase the generation rate of hydrogen peroxide because more oxygen molecules can be reduced on the cathode surface. Therefore, increasing the coverage area of ​​the cathode reaction plate can ensure that the cathode reaction is more sufficient and efficient. By increasing the coverage area of ​​the cathode reaction plate, sufficient space can be provided for the generation of products. A larger cathode reaction plate helps to more evenly distribute the fluid entering the electrolysis chamber, which can reduce local concentration differences and temperature gradients, thereby improving the uniformity and stability of the electrochemical reaction.

[0060] The present invention innovatively couples the electrochemical preparation process of hypochlorous acid and hydrogen peroxide in the same electrochemical device, using the chloride ions in tap water to oxidize at the anode to generate HClO and the dissolved oxygen to reduce at the cathode to generate H 2 O 2The reaction of the two was realized, achieving in-situ electrosynthesis and synergistic effect, opening up a new path for electrochemical synthesis. The electrolyte chamber adopts a diaphragm-free design, and the electrode structure is simple. There is no need to prepare and store hypochlorous acid and hydrogen peroxide solutions separately and then mix them, avoiding storage and transportation risks, and realizing the miniaturization and functional integration of the device. Using cheap and readily available natural water bodies such as tap water and seawater as electrolytes, there is no need to add any additional chemical reagents, the cost of raw materials and energy is low, and environmental pollution and drug residues are avoided. High-efficiency chlorine evolution and oxygen evolution catalytic coatings are used on the surfaces of the anode and cathode, respectively, to optimize the electrode reaction kinetics and greatly improve the HClO and H 2 O 2 The current efficiency is improved, reducing energy consumption.

[0061] Another object of the present invention is to provide a method for preparing hypochlorous acid and hydrogen peroxide by synergistic electrochemistry, comprising the following steps: S1, the anode reaction component 6 and the cathode reaction component 5 are connected to the positive electrode and the negative electrode of the external power supply respectively; S2. Under the action of an external water pump, the electrolyte is pumped from the liquid inlet 2 into the electrolyte chamber 4, and a redox reaction occurs on the surface of the energized electrode, and the hydrogen peroxide molecules produced by the cathode reaction component 5 and the hypochlorous acid molecules produced by the anode reaction component 6 are dissolved in the electrolyte; S3. The electrolyte containing hydrogen peroxide molecules and hypochlorous acid molecules moves along the spoiler assembly 7 and flows out of the electrolyte chamber 4 through the liquid outlet 3.

[0062] The preparation method of the present invention adopts a diaphragm-free electrolytic cell and uses an aqueous solution containing chloride ions (such as tap water and seawater) as an electrolyte. While the chloride ions are oxidized at the anode to generate hypochlorous acid, the cathode reduces dissolved oxygen to generate hydrogen peroxide. The two are mixed in situ in the electrolyte to exert a synergistic bactericidal and oxidation-enhancing effect.

[0063] The electrolyte chamber adopts a diaphragm-free structure with a built-in special positive and negative electrodes. The positive and negative electrodes are fixed in the limiting groove of the first shell of the electrolyte chamber and the chamber of the second shell respectively, and there is a physical isolation between the electrodes. The electrolyte solution containing chloride ions (such as tap water, seawater) is continuously pumped into the reaction chamber by a circulation pump and overflowed and discharged. The positive and negative electrodes are connected to the negative and positive electrodes of the power supply respectively, and the voltage, current and other parameters are adjusted by the control system.

[0064] The first shell of the electrolyte chamber adopts a baffle design. The water flows in different spoiler components, which can change the flow rate and flow path, accelerate the discharge of hypochlorous acid and hydrogen peroxide generated in situ on the electrode surface, and increase the concentration of the mixed liquid in the reaction system.

[0065] The external power supply is a DC power supply, and the reaction voltage provided is 5V-32V. According to the different conductivity of tap water in different regions, the reaction current can be changed in real time by changing the supply voltage. The reaction current density is preferably 2-10mA / cm 2 .

[0066] It also includes a control system, which can be equipped with sensors such as temperature, pH, and conductivity to achieve real-time control and monitoring of the reaction device. It can flexibly change the voltage and current of the reaction device and disconnect the circuit when the reaction device operates abnormally to protect the reaction device.

[0067] The control system can also realize the timed descaling function. When the reaction device is running for a long time, a layer of scale is easily attached to the surface of the reaction cathode. The traditional descaling method is to adjust the pH of the water quality and add acidic substances such as vinegar and citric acid to the water. In order to simplify this step, the control system can regularly reverse the power supply mode of the electrode to make the reaction cathode at a positive potential. Through this electrochemical method, the amount of scale deposited on the surface of the reaction cathode can be reduced, and the service life of the reaction device can be extended. The realization of the reversal function is based on stable cathode materials and anode materials in the electrochemical device, and the electrode materials in the electrochemical device can withstand high-intensity electrochemical corrosion.

[0068] Among them, in operating environments such as tap water and river water that are prone to scale generation, in order to reduce and prevent the generation and accumulation of scale inside the electrochemical device, when the electrochemical device operates normally for a period of time, the positive and negative power supply will be swapped at a fixed frequency.

[0069] Among them, the fixed frequency positive and negative power supply swap can be realized by using the PCB control board. Through the embedded program adjustment, the working condition of the electrochemical module can be monitored in real time on the software side, and its power supply mode can be adjusted when appropriate.

[0070] Specifically, the surface of the electrode that was originally the cathode may begin to oxidize (function as an anode), while the surface of the electrode that was originally the anode may begin to reduce (function as a cathode). By changing the direction of the electric field, the material originally deposited on the electrode surface can be dissolved back into the electrolyte due to the opposite direction of the electric field, thereby reducing the accumulation of deposits. Reducing corrosion and uneven deposition can extend the service life of electrode materials. Regularly changing the electric field can promote the uniform distribution of ions in the electrolyte and improve the overall electrolysis efficiency. Polarity reversal can also play a "self-cleaning" role, avoiding the coverage of active materials and causing a decrease in electrode efficiency.

[0071] Scale is usually formed by the deposition of calcium, magnesium and other ions in the water on the electrode surface. By regularly swapping the positive and negative electrodes, the direction of the electric field and the direction of ion migration can be changed, thereby reducing the deposition of scale on the surface of specific electrodes, thereby causing these compounds to decompose or dissolve back into the electrolyte.

[0072] Optionally, after the device has been running for 3 minutes, the positive and negative electrodes are swapped and the device is run for 30 seconds, and then the positive and negative electrodes are swapped again to form a hypochlorous acid-hydrogen peroxide mixed solution again.

[0073] In actual application scenarios, when the electrochemical device is used for sewage treatment, in order to prevent particulate matter in the sewage or precipitates produced by calcium and magnesium ions under the action of the electric field from clogging the electrolyte chamber, a corresponding filter should be added before the liquid inlet.

[0074] In the implementation scheme, the cathode and anode of the electrochemical device described in the present invention can be connected to the negative electrode and the positive electrode on the PCB control board respectively through an external circuit. Among them, there is a physical separation between the cathode and the anode of the electrochemical device. In the absence of liquid, when the power control board supplies power to the device, the electrochemical device is open-circuited, and the PCB control board cannot detect the current when sampling. At this time, the internal resistance of the device tends to infinity; in the presence of liquid, when the PCB control board supplies power to the electrochemical device, due to the action of ions in the liquid, when the electrolyte fills the electrolyte chamber, the internal electrodes of the electrochemical device are connected by ions. At this time, the PCB control board displays a certain current value when sampling, and the internal resistance of the device is reduced. By sampling and analyzing the current and resistance change rate inside the device, the design of liquid shortage protection can be combined with the equipment equipped with the electrochemical device.

[0075] Another object of the present invention is to provide an application of a method for preparing hypochlorous acid and hydrogen peroxide by electrochemical synergy. The prepared hypochlorous acid-hydrogen peroxide mixed solution is used in municipal and industrial water supply and drainage systems, or medical and health care, or food processing.

[0076] After hypochlorous acid and hydrogen peroxide are mixed in situ through an electrochemical reaction, the two can undergo a synergistically amplified bactericidal oxidation reaction, which greatly improves the killing ability of pathogenic microorganisms such as bacteria and viruses and the degradation performance of organic pollutants compared to using them alone, and can be widely used in municipal and industrial water supply and drainage systems, medical and health care, food processing and other industries. Compared with the traditional pharmaceutical preparation method, the present invention does not require separate preparation, storage and proportioning, greatly simplifies the process flow, significantly reduces the production and use costs, and has higher equipment safety and automation, which is convenient for large-scale application.

[0077] like Figures 1 to 6 As shown, the implementation method of Example 1 is as follows: A hypochlorous acid and hydrogen peroxide synergistic electrochemical device comprises a shell 1, a liquid inlet 2 and a liquid outlet 3 respectively connected to the shell 1, the shell 1 is provided with an electrolyte chamber 4 respectively connected to the liquid inlet 2 and the liquid outlet 3, a cathode reaction component 5 located in the electrolyte chamber 4, an anode reaction component 6, and a spoiler component 7 for increasing the liquid movement stroke, the cathode reaction component 5 is used to generate hydrogen peroxide, and the anode reaction component 6 is used to generate hypochlorous acid.

[0078] The present invention can directly generate hydrogen peroxide and hypochlorous acid in the electrolyte chamber 4 through the cathode reaction component 5 and the anode reaction component 6 respectively, without the need to prepare them separately and then mix them, thereby simplifying the process, reducing costs, and improving the synergy of hypochlorous acid and hydrogen peroxide. The liquid movement stroke is increased by the spoiler component 7, which effectively improves the mixing effect, improves the efficiency and uniformity of the electrochemical reaction, simplifies the process flow, reduces costs, improves the convenience of operation, and can meet the user's use needs of hypochlorous acid and hydrogen peroxide in the solution at the same time.

[0079] The cathode reaction component 5 includes a cathode electrode 51 and a cathode electrode catalyst, the anode reaction component 6 includes an anode electrode 61 and an anode electrode catalyst, and the spoiler component 7 is located between the cathode electrode 51 and the anode electrode 61 .

[0080] The spoiler assembly 7 includes a first spoiler portion 71 and a second spoiler portion 72 . A limiting groove 73 for limiting the anode electrode 61 is provided between the first spoiler portion 71 and the second spoiler portion 72 .

[0081] The second spoiler 72 and the inner wall of the electrolyte chamber 4 form an aisle space 74, the first spoiler 71 and the second spoiler 72 are alternately arranged along the extension direction of the cathode reaction component 5 or the anode reaction component 6, and a flow channel 75 for liquid movement is provided between the alternately arranged first spoiler 71 and the second spoiler 72, and the multiple aisle spaces 74 and the multiple flow channels 75 form a reaction channel 76.

[0082] The extension width of the first spoiler 71 is greater than the extension width of the second spoiler 72 , and the reaction channel 76 is arranged in a “bow” shape.

[0083] The cathode electrode 51 and the anode electrode 61 are respectively located on both sides of the reaction channel 76, the cathode electrode 51 is located on the side away from the liquid inlet 2, the anode electrode 61 is located on the side close to the liquid inlet 2, the liquid inlet 2 is located on one side of the reaction channel 76, and the liquid outlet 3 is located on the other side of the reaction channel 76.

[0084] The shell 1 includes a first shell 8 and a second shell 9, the liquid inlet 2 and the liquid outlet 3 are both located on the first shell 8, the first shell 8 is provided with a first shell mounting portion 80, and the second shell 9 is provided with a second shell matching portion 90, the first shell mounting portion 80 is matched and connected with the second shell matching portion 90, so that the first shell 8 and the second shell 9 enclose the electrolyte chamber 4.

[0085] The first shell mounting portion 80 is a snap-fit ​​portion, and the second shell matching portion 90 is a connecting step portion. The connection between the first shell 8 and the second shell 9 is achieved through snap-fit ​​connection.

[0086] The first shell 8 is provided with a first positioning groove 82, the anode electrode 61 is provided with an anode reaction plate 611 connected to the limiting groove 73, and an anode conductive end 612 connected to the anode reaction plate 611 and one end of which protrudes to the outside of the first positioning groove 82, the second shell 9 is provided with a second positioning groove 91, and the cathode electrode 51 is provided with a cathode reaction plate 511 connected to the inner cavity of the second shell 9, and a cathode conductive end 512 connected to the cathode reaction plate 511 and one end of which protrudes to the outside of the second positioning groove 91.

[0087] The spoiler assembly 7 is located in the first shell 8 , the limiting groove 73 is located in the inner cavity of the first shell 8 , and the first shell 8 is provided with a fixing groove 81 for limiting the anode reaction plate 611 .

[0088] The liquid inlet 2 and the liquid outlet 3 are located on the same side of the first shell 8 , and the coverage area of ​​the cathode reaction plate 511 is larger than that of the anode reaction plate 611 .

[0089] The preparation method of hypochlorous acid and hydrogen peroxide by coordinated electrochemistry comprises the following steps: S1, the anode reaction component 6 and the cathode reaction component 5 are connected to the positive electrode and the negative electrode of the external power supply respectively; S2. Under the action of an external water pump, the electrolyte is pumped from the liquid inlet 2 into the electrolyte chamber 4, and a redox reaction occurs on the surface of the energized electrode, and the hydrogen peroxide molecules produced by the cathode reaction component 5 and the hypochlorous acid molecules produced by the anode reaction component 6 are dissolved in the electrolyte; S21. After the electrochemical device has been operating normally for 3 minutes, the positive and negative poles will be switched at a fixed frequency. After 30 seconds of switching, the device will be switched again and resume normal operation to reduce and prevent the generation and accumulation of scale inside the electrochemical device. S22. In the absence of liquid, when the power control board supplies power to the device, the electrochemical device is open circuited, and the PCB control board cannot detect current during sampling. At this time, the internal resistance of the device tends to infinity. In the presence of liquid, when the PCB control board supplies power to the electrochemical device, due to the action of ions in the liquid, when the electrolyte fills the electrolyte chamber, the internal electrodes of the electrochemical device are connected through ions. At this time, the PCB control board displays a certain current value during sampling, and the internal resistance of the device decreases. S3. The electrolyte containing hydrogen peroxide molecules and hypochlorous acid molecules moves along the spoiler assembly 7 and flows out of the electrolyte chamber 4 through the liquid outlet 3.

[0090] like Figure 2 The device for the coordinated electrochemical preparation of hypochlorous acid and hydrogen peroxide is shown in FIG. The anode electrode is a titanium substrate coated with ruthenium iridium (10×0.8 cm, coating thickness 1 μm), the cathode electrode is a carbon substrate material (10×8×2.5 cm), and the surface is electrodeposited with nano-Fe-NC catalyst (0.1-10 mg / cm 2 ). The distance between the two poles is 4 mm, and a spoiler assembly is provided between the first shell and the second shell. The liquid inlet and outlet are connected to a diaphragm pump (flow rate 165 mL / min) to form a loop.

[0091] Table 1. Test methods of comparison group and embodiment 1

[0092] Table 2, test data of 20mg / L bactericidal substances

[0093] Table 3, Test data of 50mg / L bactericidal substances

[0094] As shown in Table 1, chlorine-containing tap water with TDS>100 was used as the electrolyte, the reaction water volume was 1L, and the power was turned on at a constant voltage of 24 V. Samples were taken from the outlet every 5 minutes, and the concentration of effective chlorine (in terms of HClO) was measured with residual chlorine test paper, and the concentration of H 2 O 2 Concentration was monitored for 60 min.

[0095] The results are as follows Figure 7 As shown, after 20 min of electrolysis, HClO and H 2 O 2 The concentrations reached 15 mg / L and 30 mg / L respectively, then the growth rate slowed down and gradually reached equilibrium. At 60 min, HClO was 20 mg / L and H 2 O 2The molar concentration ratio of the two is about 1:2.5. At the same time, stainless steel electrodes are selected to replace the cathode and anode electrode materials as a comparative experimental group to prove the beneficial effects of the present invention. The detailed implementation conditions are listed in Table 1.

[0096] Depend on Figure 7 It can be seen that when the chlorine content in tap water is low, the electrochemical reaction device can quickly produce high-concentration HClO-H at room temperature and pressure. 2 O 2 Mix the solution.

[0097] Take the mixed solution produced by the above electrolysis, adjust the pH to 6.5 with a pH meter, and prepare 20 and 50 mg / L solutions (HClO and H 2 O 2 Total amount), add about 1*105 CFU / mL of Escherichia coli suspension, shake at 25℃, and measure the sterilization rate after different contact time. The same method was used to measure the sterilization rate of HClO solution and H 2 O 2 The results are as follows: Figure 2 and Figure 3 It shows that HClO-H 2 O 2 The sterilization rate of the mixed solution is much higher than that of HClO or H 2 O 2 When the concentration was 50 mg / L, the mixed solution could reach a killing rate of 99% in 10 minutes, while HClO and H 2 O 2 When used alone, it takes 30 minutes and 60 minutes respectively. 2 O 2 The bactericidal effect was significantly enhanced after compounding, which verified the synergistic mechanism of the two.

[0098] The above experimental results fully demonstrate the technical advancement and practical value of the present invention. By cleverly coupling the electrolytic preparation of hypochlorous acid and hydrogen peroxide, the anodic oxidation and cathodic reduction reactions of chloride ions and dissolved oxygen in chlorine-containing water are utilized to achieve the conversion of HClO and H2O2 in the same reaction chamber. 2 O 2 The in-situ electrosynthesis and synergistic amplification of the reaction avoids the complicated preparation, storage and compounding process, greatly simplifies the process flow, reduces the cost and safety risks, and provides a new type of electrolytic preparation technology with high efficiency and environmental protection for the water treatment field. This technology can not only be used for water plants and municipal sewage treatment, but also has broad application prospects in the disinfection of special places such as hospitals, hotels, swimming pools, as well as the sterilization of industrial circulating water and the deep treatment of wastewater.

[0099] Example 2 To verify the hypochlorous acid-hydrogen peroxide synergistic reaction device to produce HClO-H 2 O 2 The mixed solution was used to produce hypochlorous acid and hydrogen peroxide in one flow. The same structure as in Example 1 was used. The anode electrode used a ruthenium-iridium-coated titanium substrate (10×0.8 cm, coating thickness 1 μm), the cathode electrode used a carbon substrate material (10×8×2.5 cm), and the surface was electrodeposited with nano-Fe-NC catalyst (0.1-10 mg / cm 2 ), the distance between the two poles is 4 mm.

[0100] Table 2. Test method of Example 2

[0101] As shown in Table 2, chlorinated tap water with a TDS of 150 was used as the electrolyte, and a 30 ml / min electromagnetic pump was used to supply the electrolyte, which was discharged through the liquid outlet. The external power supply was energized with a DC current at a constant voltage of 12 V, and samples were taken from the liquid outlet every 5 min. The sampling was repeated 6 times, and the concentration of effective chlorine (in terms of HClO) was measured with residual chlorine test paper, and the concentration of H 2 O 2 concentration.

[0102] The results are as follows Figure 8 As shown, the concentration of hydrogen peroxide produced at the cathode of the hypochlorous acid-hydrogen peroxide synergistic electrochemical device of the present invention can reach 5 mg / L in one flow, and the concentration of hypochlorous acid produced at the anode can reach 3 mg / L. In addition, during the test, the values ​​of the six sampling points can all remain stable within 30 minutes, indicating that the reaction device can achieve stable preparation of hypochlorous acid-hydrogen peroxide and has good continuous operation performance.

[0103] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device, comprising a housing (1), a liquid inlet (2) and a liquid outlet (3) respectively connected to the housing (1), characterized in that: The shell (1) is provided with an electrolyte chamber (4) respectively connected to the liquid inlet (2) and the liquid outlet (3), a cathode reaction component (5) located in the electrolyte chamber (4), an anode reaction component (6), and a spoiler component (7) for increasing the liquid movement stroke, the cathode reaction component (5) is used to generate hydrogen peroxide, the anode reaction component (6) is used to generate hypochlorous acid, and the liquid inlet (2) and the liquid outlet (3) are located on the same side of the shell (1).

2. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 1, characterized in that: The cathode reaction component (5) comprises a cathode electrode (51) and a cathode electrode catalyst, the anode reaction component (6) comprises an anode electrode (61) and an anode electrode catalyst, and the spoiler component (7) is located between the cathode electrode (51) and the anode electrode (61).

3. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 2, characterized in that: The spoiler assembly (7) comprises a first spoiler portion (71) and a second spoiler portion (72); a limiting groove (73) for limiting the cathode electrode (51) or the anode electrode (61) is provided between the first spoiler portion (71) and the second spoiler portion (72); and an extension width of the first spoiler portion (71) is greater than an extension width of the second spoiler portion (72).

4. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 3, characterized in that: The second spoiler (72) and the inner wall of the electrolyte chamber (4) form a passage space (74); the first spoiler (71) and the second spoiler (72) are alternately arranged along the extension direction of the cathode reaction component (5) or the anode reaction component (6); a flow channel (75) for liquid movement is provided between the alternately arranged first spoiler (71) and the second spoiler (72); a plurality of the passage spaces (74) and the plurality of the flow channels (75) form a reaction channel (76); and the reaction channel (76) is arranged in a "bow" shape.

5. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 4, characterized in that: The cathode electrode (51) and the anode electrode (61) are respectively located on two sides of the reaction channel (76), the cathode electrode (51) is located on a side away from the liquid inlet (2), and the anode electrode (61) is located on a side close to the liquid inlet (2), the liquid inlet (2) is located on one side of the reaction channel (76), and the liquid outlet (3) is located on the other side of the reaction channel (76).

6. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 3, characterized in that: The shell (1) comprises a first shell (8) and a second shell (9); the liquid inlet (2) and the liquid outlet (3) are both located on the first shell (8); the first shell (8) is provided with a first shell mounting portion (80); the second shell (9) is provided with a second shell matching portion (90); the first shell mounting portion (80) is matched and connected with the second shell matching portion (90) so that the first shell (8) and the second shell (9) enclose the electrolyte chamber (4); and the liquid inlet (2) and the liquid outlet (3) are located on the same side of the first shell (8).

7. A hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 6, characterized in that: The first shell (8) is provided with a first positioning groove (82), the anode electrode (61) is provided with an anode reaction plate (611) connected to the limiting groove (73), and an anode conductive end (612) connected to the anode reaction plate (611) and having one end extending out of the first positioning groove (82), the second shell (9) is provided with a second positioning groove (91), the cathode electrode (51) is provided with a cathode reaction plate (511) connected to the inner cavity of the second shell (9), and a cathode conductive end (512) connected to the cathode reaction plate (511) and having one end extending out of the second positioning groove (91), and the coverage area of ​​the cathode reaction plate (511) is larger than that of the anode reaction plate (611).

8. The hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to claim 6, characterized in that: The spoiler assembly (7) is located in the first shell (8), the limiting groove (73) is located in the inner cavity of the first shell (8), and the first shell (8) is provided with a fixing groove (81) for limiting the anode reaction plate (611).

9. A method for preparing hypochlorous acid and hydrogen peroxide by synergistic electrochemistry, comprising the hypochlorous acid and hydrogen peroxide synergistic electrochemical device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, the anode reaction component (6) and the cathode reaction component (5) are respectively connected to the positive electrode and the negative electrode of the external power supply; S2. Under the action of an external water pump, the electrolyte is pumped from the liquid inlet (2) into the electrolyte chamber (4), and a redox reaction occurs on the surface of the energized electrode, and the hydrogen peroxide molecules generated by the cathode reaction component (5) and the hypochlorous acid molecules generated by the anode reaction component (6) are dissolved in the electrolyte; S3. The electrolyte containing hydrogen peroxide molecules and hypochlorous acid molecules moves along the spoiler assembly (7) and flows out of the electrolyte chamber (4) through the liquid outlet (3).

10. An application of the method for synergistic electrochemical preparation of hypochlorous acid and hydrogen peroxide as claimed in claim 9, characterized in that: The prepared hypochlorous acid-hydrogen peroxide mixed solution is used in municipal and industrial water supply and drainage systems, or medical and health care, or food processing fields.

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