Hydrogen peroxide electrolysis generating device

Abstract

The utility model relates to a hydrogen peroxide electrolysis generating device which comprises a mounting box, a water inlet, a water outlet and a water outlet, a containing cavity is formed in the mounting box, and the mounting box is externally provided with a water inlet and a water outlet which are communicated with the containing cavity; the electrolysis module is arranged in the mounting box, the electrolysis module comprises a hydrogen reduction electrode, a first insulating spacer, an oxygen evolution electrode, a second insulating spacer and a bipolar plate which are arranged in sequence, conductive ends are arranged on the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate, a sealing cavity is formed in one side of the mounting box, and the first insulating spacer and the second insulating spacer are arranged in the sealing cavity. And the conductive end extends into the sealing cavity and is sealed in a waterproof manner through a sealant. During electrolysis, the prepared electrolyte is input into the containing cavity through the water inlet till the whole containing cavity is filled with the electrolyte, the electrolyte is subjected to electrolysis treatment through the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate in the containing cavity, hydrogen peroxide is generated in the oxygen reduction reaction process, and the electrolysis module is fully electrolyzed by reasonably controlling the flow speed of the electrolyte; hydrogen peroxide can be continuously produced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic water treatment, in particular to a hydrogen peroxide electrolytic generating device. Background Art

[0002] Hydrogen peroxide (H2O2, hydrogen peroxide) is an important chemical product. As a green and pollution-free inorganic compound, it is widely used in various fields such as bleaching, textiles, wastewater treatment, disinfection, and semiconductor preparation. Due to the strong oxidizing properties of hydrogen peroxide and the non-toxic and harmless nature of its reduction product (H2O), it has become a chemical reagent widely used in industrial disinfection and medical assistance.

[0003] At present, the preparation of hydrogen peroxide mainly relies on the complex and energy-intensive anthraquinone process or the direct synthesis of H2 and O2. Although the above two methods can produce a large amount of high-concentration hydrogen peroxide, they require a complex impurity separation process. At the same time, the instability of hydrogen peroxide makes it a high safety hazard during storage and transportation. With the in-depth study of electrochemical methods, it has become possible to prepare hydrogen peroxide in situ, but there is still a blank in the market for the electrolytic production of hydrogen peroxide. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a hydrogen peroxide electrolysis generating device, which has the advantage of being able to prepare hydrogen peroxide by continuous electrolysis.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] A hydrogen peroxide electrolysis generating device, comprising:

[0007] An installation box, wherein a receiving cavity is formed inside the installation box, and a water inlet and a water outlet communicating with the receiving cavity are arranged outside the installation box;

[0008] An electrolysis module is arranged in the installation box, and the electrolysis module includes: a hydrogen reduction electrode, a first insulating spacer, an oxygen evolution electrode, a second insulating spacer and a bipolar plate arranged in sequence, and the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate are all provided with conductive ends. A sealed cavity is provided on one side of the installation box, and the conductive end extends into the sealed cavity and is waterproofly sealed by a sealant.

[0009] To implement the above technical solution, during electrolysis, the configured electrolyte water inlet is input into the containing cavity until the entire containing cavity is filled, and the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate electrolyze the electrolyte in the containing cavity to perform oxygen reduction reaction and other processes to produce hydrogen peroxide, and the first insulating spacer and the second insulating spacer insulate and separate the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate to prevent contact conductive failure, and the conductive end is placed in the sealed cavity, and the conductive end is sealed together with the corresponding conductive wire bundle by injecting sealant into the sealed cavity to prevent water short circuit, and hydrogen peroxide can be discharged from the liquid outlet after the electrolysis is completed, and the electrolysis module can be fully electrolyzed by reasonably controlling the flow rate of the electrolyte, so as to continuously produce hydrogen peroxide; the hydrogen peroxide electrolysis generating device of the present application can meet the needs of small-batch hydrogen peroxide processing and use, and is suitable for ready-to-use household sterilization and disinfection equipment and washing equipment, filling the technical gap of rapid hydrogen peroxide production.

[0010] As a preferred embodiment of the utility model, the bipolar plate includes an oxygen reduction electrode and a protective electrode which are arranged close to each other, the conductive end is arranged on the protective electrode, the oxygen reduction electrode is used for electrolysis to generate oxygen, and the protective electrode is used for limiting the reduction of hydrogen peroxide.

[0011] As a preferred solution of the utility model, the hydrogen reduction electrode, the oxygen evolution electrode and the protection electrode are each provided with a plurality of first water outlets, and the first insulating spacer and the second insulating spacer are each provided with a plurality of second water outlets.

[0012] The implementation of the above technical solution is beneficial to the circulation and sufficient electrolysis of the electrolyte through the first water outlet and the second water outlet, thereby improving the electrolysis efficiency.

[0013] As a preferred solution of the utility model, the installation box includes: a matching upper box and a bottom box, and a matching sealing slot and a sealing flange are provided between the upper box and the bottom box, and the sealing flange is inserted into the sealing slot.

[0014] To implement the above technical solution, the upper box and the bottom box are separately set, which facilitates the installation and wiring of the electrolytic module. After the wiring is completed, the upper box is covered, and the sealing flange and the sealing slot cooperate to improve the sealing between the two.

[0015] As a preferred solution of the utility model, the conductive ends on the hydrogen reduction electrode, the oxygen evolution electrode and the protective electrode are staggered and distributed at intervals, a first filling block is provided in the sealed cavity of the bottom box between the staggered conductive ends, and a second filling block matching the first filling block is provided on the upper box.

[0016] By implementing the above technical solution, the volume of the sealing cavity can be reduced by the first filling block and the second filling block, thereby reducing the amount of sealant used and saving costs.

[0017] As a preferred solution of the utility model, an inserting block and a socket that are plugged into each other are provided between the first filling block and the second filling block.

[0018] The above technical solution is implemented to improve the tightness of the connection between the upper box and the bottom box.

[0019] As a preferred solution of the utility model, auxiliary filling blocks are further provided on the upper box at both sides of the second filling block, and the auxiliary filling blocks are located above the conductive ends to compress the conductive wires.

[0020] By implementing the above technical solution, the auxiliary filling block can further fill the sealing cavity on the one hand, and on the other hand, the conductive wire can be compressed after assembly to improve the conductive stability.

[0021] As a preferred solution of the utility model, a power-on port for inserting a conductive wire bundle is provided on the installation box at a position corresponding to the sealed cavity.

[0022] The above technical solution is implemented to facilitate passing the conductive wire bundle through and connecting it to an external power source after the wiring is completed.

[0023] As a preferred solution of the utility model, the upper box is provided with a first supporting rib, and the bottom box is provided with a second supporting rib. The first supporting rib and the second supporting rib are respectively supported on the upper and lower sides of the electrolytic module, and a plurality of water grooves are provided on the first supporting rib and the second supporting rib.

[0024] To implement the above technical solution, the electrolytic module is compressed and supported by the first support rib and the second support rib to ensure the stability of the installation of the electrolytic module, while the water trough can facilitate the circulation of the electrolyte.

[0025] As a preferred solution of the utility model, a connecting locking piece for installation and fixation is also provided outside the installation box.

[0026] By implementing the above technical solution, the hydrogen peroxide electrolysis generating device can be easily installed on the equipment by connecting the locking piece.

[0027] As described above, the hydrogen peroxide electrolysis generating device of the utility model has the following beneficial effects:

[0028] The utility model provides a hydrogen peroxide electrolysis generating device by providing: an installation box, wherein a containing cavity is formed inside the installation box, and a water inlet and a water outlet connected to the containing cavity are arranged outside the installation box; an electrolysis module arranged in the installation box, wherein the electrolysis module comprises: a hydrogen reduction electrode, a first insulating spacer, an oxygen evolution electrode, a second insulating spacer and a bipolar plate arranged in sequence, wherein the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate are all provided with conductive ends, and a sealing cavity is provided on one side of the installation box, and the conductive end extends into the sealing cavity and is waterproofly sealed by a sealant. During electrolysis, the configured electrolyte water inlet is input into the accommodating cavity until the entire accommodating cavity is filled. In the accommodating cavity, the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate electrolyze the electrolyte to perform oxygen reduction reaction and other processes to produce hydrogen peroxide. The first insulating spacer and the second insulating spacer insulate and separate the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate to prevent contact conductive failure, and the conductive end is placed in the sealed cavity. The conductive end is sealed together with the corresponding conductive wire bundle by injecting sealant into the sealed cavity to prevent water short circuit. After the electrolysis is completed, the hydrogen peroxide can be discharged from the liquid outlet. By reasonably controlling the flow rate of the electrolyte, the electrolysis module is fully electrolyzed, and hydrogen peroxide can be continuously produced. The hydrogen peroxide electrolysis generating device of the present application can meet the needs of small-batch hydrogen peroxide processing and use, and is suitable for ready-to-use household sterilization and disinfection equipment and washing equipment, filling the technical gap of rapid hydrogen peroxide production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 Shown is a schematic structural diagram of an embodiment of the utility model.

[0031] Figure 2 The figure shows the structure of the embodiment of the utility model after removing the upper box.

[0032] Figure 3 Shown is an exploded schematic diagram of an embodiment of the present utility model.

[0033] Figure 4 Shown is an exploded schematic diagram of another viewing angle of an embodiment of the present invention.

[0034] Figure 5 It shows a longitudinal cross-sectional view of an embodiment of the utility model along the axis of the water inlet.

[0035] The numbers and letters in the figure represent the corresponding component names:

[0036] 10. Installation box; 11. Water inlet; 12. Water outlet; 13. Upper box; 131. Sealing flange; 132. Second filling block; 133. Insert block; 134. Auxiliary filling block; 135. Power port; 136. First support rib; 14. Bottom box; 141. Sealing slot; 142. First filling block; 143. Insert; 144. Second support rib; 15. Water trough; 16. Connecting lock piece; 20. Electrolysis module; 21. Hydrogen reduction electrode; 22. First insulating spacer; 23. Oxygen evolution electrode; 24. Second insulating spacer; 25. Bipolar plate; 251. Oxygen reduction electrode; 252. Protective electrode; 26. Conductive end; 27. First water outlet; 28. Second water outlet. DETAILED DESCRIPTION

[0037] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0038] See also Figures 1 to 5 The utility model provides a hydrogen peroxide electrolysis generating device, comprising: an installation box 10, wherein a receiving cavity is formed inside the installation box 10, and a water inlet 11 and a water outlet 12 connected to the receiving cavity are arranged outside the installation box 10; an electrolysis module 20 is arranged in the installation box 10, and the electrolysis module 20 comprises: a hydrogen reduction electrode 21, a first insulating spacer 22, an oxygen evolution electrode 23, a second insulating spacer 24 and a bipolar plate 25 arranged in sequence, and a conductive end 26 is arranged on the hydrogen reduction electrode 21, the oxygen evolution electrode 23 and the bipolar plate 25, and a sealing cavity is arranged on one side of the installation box 10, and the conductive end 26 extends into the sealing cavity and is waterproofly sealed by a sealant.

[0039] Specifically, the installation box 10 includes: a matching upper box 13 and a bottom box 14, a sealing slot 141 and a sealing flange 131 that match each other are provided between the upper box 13 and the bottom box 14, the sealing flange 131 is inserted into the sealing slot 141, and a accommodating cavity is formed between the upper box 13 and the bottom box 14, and the sealing cavity is a partial space on one side of the accommodating cavity. The separate setting of the upper box 13 and the bottom box 14 facilitates the installation and wiring of the electrolytic module 20. After the wiring is completed, the upper box 13 is covered, and the sealing flange 131 and the sealing slot 141 are matched to improve the sealing between the two. The sealing flange 131 and the sealing slot 141 can also be fixed by glue, so that the installation box 10 becomes a complete sealed box body.

[0040] The bipolar plate 25 includes an oxygen reduction electrode 251 and a protective electrode 252 which are arranged close to each other. A conductive end 26 is arranged on the protective electrode 252. The oxygen reduction electrode 251 is used to generate oxygen by electrolysis, and the protective electrode 252 is used to limit the reduction of hydrogen peroxide. In addition, a plurality of first water outlets 27 are arranged on the hydrogen reduction electrode 21, the oxygen evolution electrode 23 and the protective electrode 252, and a plurality of second water outlets 28 are arranged on an insulating spacer and a second insulating spacer 24. The first water outlets 27 and the second water outlets 28 are conducive to the circulation and sufficient electrolysis of the electrolyte, thereby improving the electrolysis efficiency.

[0041] The electrolyte is a water solution with a catalyst added. The electrolysis to produce hydrogen peroxide is achieved through an oxygen reduction reaction (ORR), which includes 4e − and 2e − process;

[0042] 4e under alkaline conditions − The process is: O2+2H2O+4e − —>4OH − (E o =0.40V);

[0043] 2e − The reaction process is: O2+H2O+2e − —>HO2 − +OH − (E o =0.06V);

[0044] The generated hydrogen peroxide will further react: HO2 − +H2O+2e − —>3OH − (E o =0.86V);

[0045] Or, to decompose: 2HO2 − —>2OH − + O2;

[0046] Therefore, when preparing the electrolyte, the catalyst used must satisfy the requirement of performing 2e − process, but also to prevent further reaction and decomposition.

[0047] 4e − The process can be further divided into the generation of HOO*, O* and HO*:

[0048] O2+H + +e − —>HOO*;

[0049] HOO*+H + +e −—>H2O+O*;

[0050] O*+H + +e − —>HO*;

[0051] HO*+H + +e − —>H2O+*.

[0052] 2e − The process can be further divided into the generation of HOO*:

[0053] O2+(H + +e − )->HOO*;

[0054] HOO*+(H + +e − )—>H2O2+*.

[0055] By ensuring that HOO* is the only intermediate, H2O2 can be generated with high selectivity.

[0056] Furthermore, the conductive ends 26 on the hydrogen reduction electrode 21, the oxygen evolution electrode 23 and the protective electrode 252 are staggered and distributed at intervals. A first filling block 142 is provided between the staggered conductive ends 26 in the sealed cavity of the bottom box 14, and a second filling block 132 matching the first filling block 142 is provided on the upper box 13. The first filling block 142 can be set to a position that is basically in contact with the side of the conductive end 26. The first filling block 142 and the second filling block 132 can reduce the volume of the sealed cavity, thereby reducing the amount of sealant used and saving costs; and a plug-in block 133 and a socket 143 that are plugged into each other are provided between the first filling block 142 and the second filling block 132, thereby improving the tightness of the connection between the upper box 13 and the bottom box 14.

[0057] Furthermore, auxiliary filling blocks 134 are provided on both sides of the second filling block 132 on the upper box 13. The auxiliary filling blocks 134 are located above the conductive end 26 to compress the conductive wire. Since the heights of the conductive ends 26 on both sides are different, the heights of the two auxiliary filling blocks 134 are also different. The auxiliary filling blocks 134 can further fill the sealed cavity on the one hand, and on the other hand, compressing the conductive wire after assembly can improve the conductive stability.

[0058] A power port 135 for inserting a conductive wire bundle is provided at a position corresponding to the sealed cavity on the installation box 10, so that the conductive wire bundle can be passed out and connected to an external power source after wiring is completed. The number of power ports 135 can be set as needed, and is preferably set on the upper box 13.

[0059] A first supporting rib 136 is provided on the upper box 13, and a second supporting rib 144 is provided on the bottom box 14. The first supporting rib 136 and the second supporting rib 144 are respectively supported on the upper and lower sides of the electrolytic module 20, and a plurality of water grooves 15 are provided on the first supporting rib 136 and the second supporting rib 144. The electrolytic module 20 is pressed and supported by the first supporting rib 136 and the second supporting rib 144 to ensure the stability of the installation of the electrolytic module 20, and the water grooves 15 can facilitate the circulation of electrolyte.

[0060] A connecting locking piece 16 for installation and fixation is also provided outside the installation box 10. Preferably, two connecting locking pieces 16 are arranged. The two connecting locking pieces 16 are located on two opposite sides. The connecting locking pieces 16 are also provided with connecting holes for fasteners to pass through. The connecting locking pieces 16 can be used to facilitate the installation of the hydrogen peroxide electrolysis generating device on the equipment.

[0061] During electrolysis, the configured electrolyte water inlet 11 is input into the accommodating chamber until the entire accommodating chamber is filled. In the accommodating chamber, the hydrogen reduction electrode 21, the oxygen evolution electrode 23 and the bipolar plate 25 electrolyze the electrolyte to perform oxygen reduction reaction and other processes to produce hydrogen peroxide. The first insulating spacer 22 and the second insulating spacer 24 insulate and separate the hydrogen reduction electrode 21, the oxygen evolution electrode 23 and the bipolar plate 25 to prevent contact conductive failure, and the conductive end 26 is placed in the sealed chamber. The conductive end 26 is sealed together with the corresponding conductive wire bundle by injecting sealant into the sealed chamber to prevent water short circuit. After the electrolysis is completed, the hydrogen peroxide can be discharged from the liquid outlet. By reasonably controlling the flow rate of the electrolyte, the electrolysis module 20 is fully electrolyzed, and hydrogen peroxide can be continuously produced. The hydrogen peroxide electrolysis generating device of the present application can meet the needs of small-batch hydrogen peroxide processing and use, and is suitable for the immediate production and use of household sterilization and disinfection equipment and washing equipment, filling the technical gap of rapid production of hydrogen peroxide.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A hydrogen peroxide electrolysis generating device, characterized in that: include: An installation box, wherein a receiving cavity is formed inside the installation box, and a water inlet and a water outlet communicating with the receiving cavity are arranged outside the installation box; An electrolysis module is arranged in the installation box, and the electrolysis module includes: a hydrogen reduction electrode, a first insulating spacer, an oxygen evolution electrode, a second insulating spacer and a bipolar plate arranged in sequence, and the hydrogen reduction electrode, the oxygen evolution electrode and the bipolar plate are all provided with conductive ends. A sealed cavity is provided on one side of the installation box, and the conductive end extends into the sealed cavity and is waterproofly sealed by a sealant.

2. The hydrogen peroxide electrolysis generating device according to claim 1, characterized in that: The bipolar plate comprises an oxygen reduction electrode and a protective electrode which are arranged close to each other, the conductive end is arranged on the protective electrode, the oxygen reduction electrode is used for electrolysis to generate oxygen, and the protective electrode is used for limiting the reduction of hydrogen peroxide.

3. The hydrogen peroxide electrolysis generating device according to claim 2, characterized in that: The hydrogen reduction electrode, the oxygen evolution electrode and the protection electrode are each provided with a plurality of first water outlets, and the first insulating spacer and the second insulating spacer are each provided with a plurality of second water outlets.

4. The hydrogen peroxide electrolysis generating device according to claim 1, characterized in that: The installation box comprises an upper box and a bottom box which match each other. A sealing slot and a sealing flange which match each other are arranged between the upper box and the bottom box. The sealing flange is plugged into the sealing slot.

5. The hydrogen peroxide electrolysis generating device according to claim 4, characterized in that: The conductive ends on the hydrogen reduction electrode, the oxygen evolution electrode and the protective electrode are staggered and arranged at intervals, a first filling block is arranged between the staggered conductive ends in the sealed cavity of the bottom box, and a second filling block matching the first filling block is arranged on the upper box.

6. The hydrogen peroxide electrolysis generating device according to claim 5, characterized in that: An inserting block and a socket which are plugged into each other are arranged between the first filling block and the second filling block.

7. The hydrogen peroxide electrolysis generating device according to claim 5, characterized in that: Auxiliary filling blocks are also provided on the upper box at both sides of the second filling block, and the auxiliary filling blocks are located above the conductive ends to compress the conductive wires.

8. The hydrogen peroxide electrolysis generating device according to claim 1, characterized in that: A power-on port for inserting a conductive wire harness is provided on the installation box at a position corresponding to the sealed cavity.

9. The hydrogen peroxide electrolysis generating device according to claim 4, characterized in that: The upper box is provided with a first supporting rib, and the bottom box is provided with a second supporting rib. The first supporting rib and the second supporting rib are respectively supported on the upper and lower sides of the electrolytic module, and a plurality of water grooves are provided on the first supporting rib and the second supporting rib.

10. The hydrogen peroxide electrolysis generating device according to claim 1, characterized in that: The installation box is also provided with a connecting locking piece for installation and fixation outside.

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