An apparatus for electrochemically producing hydrogen peroxide

Abstract

The utility model provides a kind of electrochemical preparation hydrogen peroxide device, belong to hydrogen peroxide preparation technical field, comprising: shell and electrode assembly, shell is provided with water inlet and water outlet respectively with cavity intercommunication, the top of shell is provided with openwork structure;The anode electrode and cathode electrode of electrode assembly are arranged in cavity, and the second end of cathode electrode and anode electrode is used to connect power supply.Water is transported to the cavity of shell by water inlet, and the first end of anode electrode and cathode electrode is immersed in water, openwork structure makes electrode assembly can contact air, better capture oxygen in air and participate in reaction, circuit is conducted between cathode electrode and anode electrode, and hydrogen peroxide is generated by electrolysis of water, and the water after reaction flows out from water outlet and returns to water tank assembly, and the reaction is repeated for a period of time, and hydrogen peroxide reaches required concentration.The electrochemical preparation hydrogen peroxide device provided by the utility model solves the problem of adding electrolyte in the hydrogen peroxide production device in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen peroxide preparation technology, specifically to an apparatus for the electrochemical preparation of hydrogen peroxide. Background Technology

[0002] Electrolysis of water technology has gradually become a research hotspot due to its environmental friendliness and ease of operation. In particular, the method of producing hydrogen peroxide by electrochemically reducing oxygen at a cathode has attracted widespread attention due to its strong disinfection capabilities and lack of secondary pollution. Electrochemical oxygen reduction technology for producing hydrogen peroxide has been developing for over a century. Its basic principle is that oxygen undergoes an electron reduction reaction on the surface of a catalytic cathode, synthesizing hydrogen peroxide in one step.

[0003] In existing technologies, hydrogen peroxide production devices typically have an anode electrode and a cathode electrode installed in a reaction tank. Air or oxygen is introduced into the reaction tank, and the electrolyte in the reaction tank is electrolyzed by passing electricity through the anode and cathode electrodes, thereby producing hydrogen peroxide.

[0004] However, the above method requires manual addition of electrolyte, which is costly and not suitable for home use. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that hydrogen peroxide production devices in the prior art need to add electrolyte, thereby providing a device for electrochemical preparation of hydrogen peroxide.

[0006] To solve the above-mentioned technical problems, this utility model provides an apparatus for electrochemically preparing hydrogen peroxide, comprising: a shell and an electrode assembly; the shell has a cavity for containing water; the shell is provided with an inlet and an outlet, which are respectively connected to the cavity; the inlet and the outlet are used to connect to a water tank assembly; the top of the shell is provided with a hollow structure; the electrode assembly has an anode electrode and a cathode electrode, one end of the anode electrode and the cathode electrode are disposed in the cavity, and the second end of the cathode electrode and the anode electrode are used to connect to a power source.

[0007] In use, the water tank assembly delivers water through the inlet into the cavity inside the shell. The first ends of the anode and cathode electrodes are immersed in the water within the cavity. The perforated structure at the top of the shell allows the electrode assembly to contact the air, enabling better capture of oxygen from the air for the reaction. The second ends of the anode and cathode electrodes are connected to a power source, establishing a circuit between them. This electrolyzes the water to produce hydrogen peroxide. The reacted water flows out through the outlet back into the water tank assembly. This process is repeated for a period of time until the hydrogen peroxide reaches the desired concentration. This device does not require an electrolyte; it directly uses water as a raw material to produce hydrogen peroxide, reducing costs. It can be used to disinfect water bodies or to disinfect items. The electrochemical hydrogen peroxide preparation device provided by this invention solves the problem of existing hydrogen peroxide production devices requiring the addition of an electrolyte.

[0008] Optionally, the top of the housing is provided with an openable cover, which has multiple through holes. This design allows for easy device assembly via the openable cover, and the multiple through holes form a perforated structure, enabling the electrode assembly to contact the air and better capture oxygen from the air to participate in the reaction.

[0009] Optionally, the anode electrode and the cathode electrode are inserted into the through hole, so that the second ends of the anode electrode and the cathode electrode protrude from the through hole. With this arrangement, the through hole can position the cathode electrode and the anode electrode, while the protrusion of the second ends of the cathode electrode and the anode electrode from the through hole facilitates connection to a power source.

[0010] Optionally, a porous membrane is disposed within the cavity of the housing, dividing the cavity into a first part and a second part. The anode electrode is disposed in the first part, and the cathode electrode is disposed in the second part. This arrangement, with the porous membrane separating the cathode and anode electrodes, prevents short circuits between them.

[0011] Optionally, the separator membrane is made of an insulating material. With this configuration, the separator membrane made of insulating material can prevent short circuits between the cathode and anode electrodes.

[0012] Optionally, the inlet is located on the upper part of the first side of the housing, and the outlet is located on the lower part of the second side of the housing, with the first and second sides facing each other. This arrangement creates an upward-inflow, downward-outflow flow path between the inlet and outlet, allowing the hydrogen peroxide generated within the housing cavity to be discharged promptly.

[0013] Optionally, the water tank assembly includes a water storage tank and a water pump. The water pump is located at the outlet of the water storage tank, connected to the inlet, and the outlet is connected to the inlet of the water storage tank. With this configuration, the water pump provides power for the circulation of water between the water storage tank and the casing.

[0014] Optionally, the anode electrode is made of one or more alloys selected from platinum, palladium, ruthenium, rhodium, iridium, osmium, and gold; or, the anode electrode is a boron-doped diamond thin film; or, the anode electrode is a glassy carbon electrode. These configurations ensure that the anode electrode can conduct electricity.

[0015] Optionally, the cathode electrode is configured as a nickel foam plate, a porous graphite plate, a sintered titanium plate, an activated carbon felt, or carbon paper. With the above configuration, the nickel foam plate, porous graphite plate, sintered titanium plate, activated carbon felt, or carbon paper have a porous structure. Using these materials to fabricate the cathode electrode can meet the conductivity requirements of the cathode electrode while facilitating the diffusion of hydrogen peroxide generated during electrolysis and its dissolution into water to form hydrogen peroxide. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of one embodiment of the apparatus for electrochemical preparation of hydrogen peroxide provided in this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the middle cover being opened;

[0019] Figure 3 for Figure 1 A top-down view;

[0020] Figure 4 for Figure 1 A cross-sectional schematic diagram.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Shell; 2. Inlet; 3. Outlet; 4. Anode electrode; 5. Cathode electrode; 6. Cover; 7. Through hole; 8. Divider membrane. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] This embodiment provides the structure of an electrochemical device for preparing hydrogen peroxide that can directly react water into hydrogen peroxide, used to prepare hydrogen peroxide for disinfecting water bodies or to disinfect items using the generated hydrogen peroxide.

[0028] like Figure 1 , Figure 2 The diagram illustrates a specific embodiment of an electrochemical hydrogen peroxide preparation device provided in this example. The device includes: a housing 1 and an electrode assembly. The housing 1 has an internal cavity for containing water. The housing 1 has an inlet 2 and an outlet 3, which are respectively connected to the cavity. The inlet 2 and outlet 3 are used to connect to a water tank assembly. The top of the housing 1 has a perforated structure. The electrode assembly has an anode electrode 4 and a cathode electrode 5. One end of the anode electrode 4 and the cathode electrode 5 is disposed within the cavity, and the second end of the cathode electrode 5 and the anode electrode 4 is used to connect to a power source.

[0029] In use, the water tank assembly delivers water through the inlet 2 into the cavity inside the housing 1. The first ends of the anode electrode 4 and the cathode electrode 5 are immersed in the water within the cavity. The perforated structure at the top of the housing 1 allows the electrode assembly to contact the air, enabling better capture of oxygen from the air for the reaction. The second ends of the anode electrode 4 and the cathode electrode 5 are connected to a power source, establishing a circuit between them. This electrolyzes the water to produce hydrogen peroxide. The reacted water flows out through the outlet 3 back into the water tank assembly. After repeating this process for a period of time, the hydrogen peroxide reaches the desired concentration. This device does not require an electrolyte; it directly uses water as a raw material to produce hydrogen peroxide, reducing costs. It can be used to disinfect water itself or to disinfect items. The electrochemical hydrogen peroxide preparation device provided in this embodiment solves the problem of existing hydrogen peroxide production devices requiring the addition of an electrolyte.

[0030] It should be noted that the electrochemical hydrogen peroxide preparation device provided in this embodiment can be used in various electrical devices such as humidifiers, air purifiers, floor scrubbers, and dental irrigators.

[0031] like Figure 1-3 As shown in the embodiment, in the electrochemical hydrogen peroxide preparation device provided in this embodiment, the top of the housing 1 is provided with an openable and closable cover 6, and the cover 6 is provided with multiple through holes 7. The openable and closable cover 6 facilitates device assembly, and the multiple through holes 7 on the cover 6 form a hollow structure, allowing the electrode assembly to come into contact with air, which can better capture oxygen in the air to participate in the reaction.

[0032] like Figure 1 , Figure 4 As shown, in the electrochemical hydrogen peroxide preparation apparatus provided in this embodiment, the anode electrode 4 and the cathode electrode 5 are inserted into the through hole 7, so that the second ends of the anode electrode 4 and the cathode electrode 5 protrude from the through hole 7. The through hole 7 can position the cathode electrode 5 and the anode electrode 4, and the protrusion of the second ends of the cathode electrode 5 and the anode electrode 4 from the through hole 7 facilitates connection to a power source. Alternatively, as an alternative embodiment, a limiting groove is provided inside the housing 1, and the cathode electrode 5 and the anode electrode 4 are disposed in the limiting groove. A connecting wire passes through the through hole 7 and extends into the housing 1 to connect to the second ends of the cathode electrode 5 and the anode electrode 4.

[0033] like Figure 2As shown in the embodiment, in the electrochemical hydrogen peroxide preparation apparatus provided, a porous membrane 8 is disposed within the cavity of the housing 1. The membrane 8 divides the cavity into a first part and a second part. The anode electrode 4 is disposed in the first part, and the cathode electrode 5 is disposed in the second part. The porous membrane 8 separates the cathode electrode 5 and the anode electrode 4, preventing them from coming into contact and short-circuiting.

[0034] like Figure 2 As shown, in the electrochemical hydrogen peroxide preparation apparatus provided in this embodiment, the separator membrane 8 is made of an insulating material. The separator membrane 8, made of an insulating material, can prevent short circuits between the cathode electrode 5 and the anode electrode 4. Specifically, the separator membrane 8 is made of insulating materials such as ceramics, plastics, or glass fibers.

[0035] like Figure 1 , Figure 2 , Figure 4 As shown, in the electrochemical hydrogen peroxide preparation apparatus provided in this embodiment, the inlet 2 is located on the upper part of the first side of the housing 1, and the outlet 3 is located on the lower part of the second side of the housing 1, with the first side and the second side facing each other. The inlet 2 and the outlet 3 form an upward-inward and downward-outward flow path, enabling the hydrogen peroxide generated in the cavity of the housing 1 to be discharged in a timely manner. Alternatively, as an alternative embodiment, the inlet 2 is located on the lower part of the first side of the housing 1, and the outlet 3 is located on the upper part of the second side of the housing 1.

[0036] like Figure 1 As shown in this embodiment, the apparatus for electrochemically preparing hydrogen peroxide includes a water tank assembly comprising a water storage tank and a water pump. The water pump is located at the outlet of the water storage tank and is connected to the inlet 2. The outlet 3 is connected to the inlet of the water storage tank. The water pump provides power for the circulation of water between the water storage tank and the housing 1. Alternatively, as an alternative embodiment, the water pump can also be located at the inlet of the water storage tank, connected to the outlet 3, with the inlet 2 directly connected to the outlet of the water storage tank.

[0037] like Figure 1 As shown, in the electrochemical hydrogen peroxide preparation apparatus provided in this embodiment, the anode electrode 4 is made of one or more alloys selected from platinum, palladium, ruthenium, rhodium, iridium, osmium, and gold; or, the anode electrode 4 is a boron-doped diamond film; or, the anode electrode 4 is a glassy carbon electrode. This satisfies the conductivity requirement of the anode electrode 4.

[0038] like Figure 1As shown in this embodiment, in the apparatus for electrochemical preparation of hydrogen peroxide, the cathode electrode 5 is configured as a nickel foam plate, a porous graphite plate, a sintered titanium plate, an activated carbon felt, or carbon paper. The nickel foam plate, porous graphite plate, sintered titanium plate, activated carbon felt, or carbon paper have a porous structure. Using these materials to fabricate the cathode electrode 5 satisfies the conductivity requirements of the cathode electrode 5 while facilitating the diffusion of hydrogen peroxide generated during electrolysis and its dissolution into water to form hydrogen peroxide.

[0039] How to use:

[0040] like Figure 1 As shown in the embodiment, the electrochemical hydrogen peroxide preparation device provided in this embodiment, during use, the water tank assembly delivers water through the water inlet 2 into the cavity inside the housing 1. The first ends of the anode electrode 4 and the cathode electrode 5 are immersed in the water in the cavity. The hollow structure at the top of the housing 1 allows the electrode assembly to contact the air, which can better capture oxygen in the air to participate in the reaction. The second ends of the anode electrode 4 and the cathode electrode 5 are connected to the power supply, and the circuit between the anode electrode 4 and the cathode electrode 5 is conductive, electrolyzing the water to produce hydrogen peroxide. The reacted water flows out from the water outlet 3 and returns to the water tank assembly. After repeating the above process for a period of time, the hydrogen peroxide reaches the required concentration.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. An apparatus for the electrochemical preparation of hydrogen peroxide, characterized in that, include: The shell (1) has an internal cavity for containing water. The shell (1) is provided with an inlet (2) and an outlet (3). The inlet (2) and the outlet (3) are respectively connected to the cavity. The inlet (2) and the outlet (3) are used to connect to the water tank assembly. The top of the shell (1) is provided with a hollow structure. The electrode assembly has an anode electrode (4) and a cathode electrode (5), one end of the anode electrode (4) and the cathode electrode (5) is disposed in the cavity, and the second end of the cathode electrode (5) and the anode electrode (4) is used to connect to a power source.

2. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 1, characterized in that, The top of the housing (1) is provided with an openable cover (6), and the cover (6) is provided with a plurality of through holes (7).

3. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 2, characterized in that, The anode electrode (4) and the cathode electrode (5) are inserted into the through hole (7) so that the second ends of the anode electrode (4) and the cathode electrode (5) protrude from the through hole (7).

4. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 1, characterized in that, The cavity of the housing (1) is provided with a porous membrane (8), which divides the cavity into a first part and a second part. The anode electrode (4) is disposed in the first part and the cathode electrode (5) is disposed in the second part.

5. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 4, characterized in that, The separator membrane (8) is made of insulating material.

6. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 1, characterized in that, The inlet (2) is located on the upper part of the first side of the housing (1), and the outlet (3) is located on the lower part of the second side of the housing (1). The first side and the second side are arranged opposite to each other.

7. The apparatus for electrochemical preparation of hydrogen peroxide according to claim 1, characterized in that, The water tank assembly includes a water storage tank and a water pump. The water pump is located at the outlet of the water storage tank and is connected to the inlet (2). The outlet (3) is connected to the inlet of the water storage tank.

8. The apparatus for electrochemical preparation of hydrogen peroxide according to any one of claims 1-7, characterized in that, The anode electrode (4) is made of one or more alloys of platinum, palladium, ruthenium, rhodium, iridium, osmium, and gold; Alternatively, the anode electrode (4) can be configured as a boron-doped diamond film; Alternatively, the anode electrode (4) may be configured as a glassy carbon electrode.

9. The apparatus for electrochemical preparation of hydrogen peroxide according to any one of claims 1-7, characterized in that, The cathode electrode (5) is configured as a foamed nickel plate, a porous graphite plate, a sintered titanium plate, an activated carbon felt, or carbon paper.

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