Device for electrochemically producing hydrogen peroxide and production method of hydrogen peroxide

Abstract

The invention provides a device for electrochemically producing hydrogen peroxide and a production method of hydrogen peroxide, and belongs to the technical field of electrochemistry. The anode electrode and the cathode electrode are arranged at an interval; the water absorption piece is arranged between the anode electrode and the cathode electrode, and the water absorption piece is tightly attached to the anode electrode and the cathode electrode; during use, liquid is sucked and stored through the water absorption piece, so that a circuit between the cathode electrode and the anode electrode is conducted, water is electrolyzed to generate hydrogen peroxide, and the hydrogen peroxide is released into air to play a role in sterilization and disinfection; the device for electrochemically producing hydrogen peroxide provided by the invention can directly adsorb moisture from air to prepare hydrogen peroxide, and solves the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte.

Description

Technical Field

[0001] The present invention relates to the field of electrochemical technology, and in particular to a device for electrochemically generating hydrogen peroxide and a method for producing hydrogen peroxide. Background Art

[0002] As an efficient, harmless and residue-free oxidant, hydrogen peroxide solution is widely used in the sterilization and disinfection of water bodies and the treatment of organic pollutants. The existing industrial production of hydrogen peroxide requires the use of large-scale, energy-intensive and cumbersome preparation processes, and transportation and storage facilities have additional equipment costs and potential safety hazards.

[0003] In the prior art, in order to avoid the cost and risk of storing and transporting hydrogen peroxide, a ready-to-use hydrogen peroxide production device is proposed. Usually, an anode electrode and a cathode electrode are arranged in a reaction tank, and the electrolyte in the reaction tank is electrolyzed by energizing the anode electrode and the cathode electrode to produce hydrogen peroxide.

[0004] However, the above method requires artificial addition of electrolyte. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte, thereby providing a device for electrochemically generating hydrogen peroxide and a method for producing hydrogen peroxide.

[0006] In order to solve the above technical problems, the present invention provides a device for electrochemically generating hydrogen peroxide, comprising:

[0007] cathode electrode;

[0008] an anode electrode, wherein the anode electrode and the cathode electrode are spaced apart from each other;

[0009] The water absorbing member is arranged between the anode electrode and the cathode electrode, and the water absorbing member is closely attached to the anode electrode and the cathode electrode.

[0010] Optionally, it further includes: a refrigeration device for cooling the space between the anode electrode and the cathode electrode so as to reduce the temperature between the anode electrode and the cathode electrode to condense the liquid.

[0011] Optionally, the anode electrode is made of heat-conducting and electrically conductive material.

[0012] Optionally, a semiconductor cooling sheet is disposed against a side of the anode electrode away from the cathode electrode.

[0013] Optionally, the cathode electrode is made of porous conductive material.

[0014] Optionally, a fan is provided on a side of the cathode electrode away from the anode electrode.

[0015] Optionally, the cathode electrode and the anode electrode are horizontally arranged plate profiles.

[0016] Optionally, the water absorbing member is a plate-like structure made of a porous water-retaining material, an ion exchange membrane or a proton exchange membrane.

[0017] The present invention provides a method for producing hydrogen peroxide, comprising the device for electrochemically producing hydrogen peroxide as described in any one of the above schemes, comprising the following steps:

[0018] Absorbing and storing liquid in the absorbent member;

[0019] Detecting current, detecting the working current between the anode electrode and the cathode electrode, and judging whether the preset current is reached;

[0020] If the operating current between the anode electrode and the cathode electrode is greater than the preset current, hydrogen peroxide is produced.

[0021] Optionally, by cooling the anode electrode, liquid is absorbed and stored in the water absorbing member between the anode electrode and the cathode electrode.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. The electrochemical hydrogen peroxide generating device provided by the present invention absorbs and stores liquid through a water absorbent, so that the circuit between the cathode electrode and the anode electrode is connected, water is electrolyzed to generate hydrogen peroxide, and the hydrogen peroxide is released into the air to play a sterilization and disinfection role. The structure of the water absorbent, the anode electrode and the cathode electrode tightly fitting together reduces the internal resistance between the anode electrode and the cathode electrode, and only a small amount of liquid is needed to generate a large electrolysis current, so that the hydrogen peroxide generation efficiency is higher; the electrochemical hydrogen peroxide generating device provided by the present invention can directly absorb water from the air to produce hydrogen peroxide, which is more efficient than electrolyzing gas-phase humid air, and solves the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte.

[0024] 2. The device for electrochemically producing hydrogen peroxide provided by the present invention cools the space between the anode electrode and the cathode electrode through a refrigeration device, thereby lowering the temperature between the anode electrode and the cathode electrode to condense the liquid, thereby providing raw materials for electrolytic production of hydrogen peroxide.

[0025] 3. The electrochemical hydrogen peroxide generating device provided by the present invention uses an anode electrode made of a heat-conducting and conductive material, which can conduct temperature.

[0026] 4. In the device for electrochemically producing hydrogen peroxide provided by the present invention, the temperature of the cold end of the semiconductor refrigeration plate is reduced after power is supplied to the semiconductor refrigeration plate. The cold end of the semiconductor refrigeration plate is attached to the side of the anode electrode away from the cathode electrode. The temperature of the anode electrode is reduced by heat conduction between the semiconductor refrigeration plate and the anode electrode. The heat transfer characteristics of the anode electrode can transfer the cold energy toward the cathode electrode, thereby reducing the temperature of the cathode electrode and the water absorbent, condensing the liquid, and providing raw materials for electrolytic production of hydrogen peroxide.

[0027] 5. In the device for electrochemically generating hydrogen peroxide provided by the present invention, the cathode electrode adopts a porous conductive material, which can meet the conductivity requirements of the cathode electrode and allow the liquid condensed on the cathode electrode to penetrate downward to the water-absorbing material to provide raw materials for electrolytic generation of hydrogen peroxide, and the generated hydrogen peroxide can diffuse into the air through the porous cathode electrode.

[0028] 6. The device for electrochemically generating hydrogen peroxide provided by the present invention uses a fan to blow air to the side of the cathode electrode away from the anode electrode, so as to bring the hydrogen peroxide generated by electrolysis into the air.

[0029] 7. In the electrochemical hydrogen peroxide generating device provided by the present invention, the cathode electrode and the anode electrode adopt horizontally arranged plate profiles, which is conducive to the storage of liquid in the water absorbing member and can avoid liquid leakage.

[0030] 8. The electrochemical hydrogen peroxide generating device provided by the present invention adopts porous water-retaining material, ion exchange membrane or proton exchange membrane to make the water-absorbing component, which is beneficial to the adsorption and storage of liquid. The water-absorbing component is configured as a plate-like structure that can fit tightly with the anode electrode and the cathode electrode, which is beneficial to reduce the internal resistance between the anode electrode and the cathode electrode, and can also allow the cold energy generated by the cold end of the semiconductor refrigeration plate to be conducted through temperature, thereby reducing the temperature of the anode electrode, the water-absorbing component and the cathode electrode.

[0031] 9. The method for producing hydrogen peroxide provided by the present invention absorbs and stores liquid through a water absorbent, makes the circuit between the cathode electrode and the anode electrode conductive, detects the working current between the anode electrode and the cathode electrode, and if the working current between the anode electrode and the cathode electrode is greater than a preset current, hydrogen peroxide is produced; if the working current between the anode electrode and the cathode electrode is less than the preset current, liquid is continuously absorbed and stored through the water absorbent, and the above-mentioned current detection process is repeated; since the above-mentioned device for electrochemically producing hydrogen peroxide is used, any of the above-mentioned advantages is possessed.

[0032] 10. The method for producing hydrogen peroxide provided by the present invention condenses moisture in the air into liquid by cooling toward the anode electrode, and the liquid is absorbed and stored in the water absorbent between the anode electrode and the cathode electrode, providing raw materials for the electrode to produce hydrogen peroxide, thereby solving the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of an embodiment of a device for electrochemically generating hydrogen peroxide provided in an embodiment of the present invention;

[0035] Figure 2 A flow chart of a method for producing hydrogen peroxide.

[0036] Description of reference numerals:

[0037] 1. Anode electrode; 2. Cathode electrode; 3. Water absorbing element; 4. Semiconductor cooling sheet; 5. Fan; 6. First power supply; 7. Second power supply. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] This embodiment provides an electrochemical hydrogen peroxide production device capable of directly producing hydrogen peroxide from the air, which is used to produce hydrogen peroxide for sterilization and disinfection.

[0043] like Figure 1 As shown, a specific implementation of an electrochemical hydrogen peroxide generating device provided in this embodiment includes: a cathode electrode 2, an anode electrode 1 and a water absorbent 3; the anode electrode 1 and the cathode electrode 2 are arranged at intervals; the water absorbent 3 is arranged between the anode electrode 1 and the cathode electrode 2, and the water absorbent 3 is tightly fitted with the anode electrode 1 and the cathode electrode 2.

[0044] When in use, liquid is absorbed and stored through the water absorbing member 3, so that the circuit between the cathode electrode 2 and the anode electrode 1 is connected, water is electrolyzed to produce hydrogen peroxide, and the hydrogen peroxide is released into the air to achieve a sterilization and disinfection effect. The tightly fitted structure of the water absorbing member 3, the anode electrode 1 and the cathode electrode 2 reduces the internal resistance between the anode electrode 1 and the cathode electrode 2, and only a small amount of liquid is needed to generate a large electrolysis current, so that the hydrogen peroxide production efficiency is higher. The electrochemical hydrogen peroxide production device provided in this embodiment can directly absorb water from the air to produce hydrogen peroxide, which is more efficient than electrolyzing gas-phase humid air, and solves the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte.

[0045] Specifically, the anode electrode 1 and the cathode electrode 2 are electrically connected to a first power supply 6 , the first power supply 6 uses low-voltage alternating current, the anode electrode 1 is connected to the positive pole of the first power supply 6 , and the cathode electrode 2 is connected to the negative pole of the first power supply 6 .

[0046] like Figure 1 As shown, the electrochemical hydrogen peroxide generation device provided in this embodiment also includes: a refrigeration device, which cools the space between the anode electrode 1 and the cathode electrode 2, so that the temperature between the anode electrode 1 and the cathode electrode 2 is reduced to condense the liquid. The refrigeration device cools the space between the anode electrode 1 and the cathode electrode 2, so that the temperature between the anode electrode 1 and the cathode electrode 2 is reduced to condense the liquid, providing raw materials for electrolytic generation of hydrogen peroxide. In addition, as an alternative embodiment, the refrigeration device can be omitted, and the moisture in the air can be adsorbed by the water absorbent 3, and a humidifying device can also be provided to increase the humidity in the air.

[0047] like Figure 1As shown, in the device for electrochemically generating hydrogen peroxide provided in this embodiment, the anode electrode 1 is made of a heat-conducting conductive material. The anode electrode 1 made of a heat-conducting conductive material can conduct temperature. Specifically, the anode electrode 1 can be made of an alloy of one or more of platinum, palladium, ruthenium, rhodium, iridium, osmium, and gold, or the anode electrode 1 can be made of a boron-doped diamond film, or the anode electrode 1 is a glassy carbon electrode, which can meet the requirements of electrical conductivity and heat conduction of the anode electrode 1 and prevent the condensed liquid from leaking from the anode electrode 1.

[0048] like Figure 1 As shown, in the device for electrochemically generating hydrogen peroxide provided in this embodiment, a semiconductor cooling sheet 4 is provided against the side of the anode electrode 1 away from the cathode electrode 2. After the semiconductor cooling sheet 4 is powered on, the temperature of the cold end is reduced. The cold end of the semiconductor cooling sheet 4 is against the side of the anode electrode 1 away from the cathode electrode 2. The heat is transferred between the semiconductor cooling sheet 4 and the anode electrode 1, so that the temperature of the anode electrode 1 is reduced. Through the heat transfer characteristics of the anode electrode 1, the cold energy can be transferred toward the cathode electrode 2, so that the temperature of the cathode electrode 2 and the water absorbing member 3 is reduced, and the liquid is condensed to provide raw materials for electrolytic generation of hydrogen peroxide. Specifically, the semiconductor cooling sheet 4 is electrically connected to a second power supply 7. In addition, as an alternative embodiment, the semiconductor cooling sheet 4 can also be replaced by a heat exchanger with a refrigerant medium, or other refrigeration methods that can exchange heat with the anode electrode 1.

[0049] like Figure 1 As shown, in the device for electrochemically generating hydrogen peroxide provided in this embodiment, the cathode electrode 2 is made of a porous conductive material. The cathode electrode 2 made of a porous conductive material can meet the conductivity requirements of the cathode electrode 2, and can also allow the liquid condensed on the cathode electrode 2 to penetrate downward to the water-absorbing material, providing raw materials for electrolytic generation of hydrogen peroxide, and the generated hydrogen peroxide can diffuse into the air through the porous cathode electrode 2. Specifically, the cathode electrode 2 is a foam nickel plate, a porous graphite plate, a sintered titanium plate, an activated carbon felt or carbon paper.

[0050] like Figure 1 As shown, in the electrochemical hydrogen peroxide generating device provided in this embodiment, a fan 5 is provided on the side of the cathode electrode 2 away from the anode electrode 1. The fan 5 blows air to the side of the cathode electrode 2 away from the anode electrode 1, so that the hydrogen peroxide generated by electrolysis is brought into the air. In addition, as an alternative embodiment, the fan 5 can also be provided at other positions that can allow wind to blow from the side of the cathode electrode 2 away from the anode electrode 1.

[0051] like Figure 1As shown, in the electrochemical hydrogen peroxide generating device provided in this embodiment, the cathode electrode 2 and the anode electrode 1 are plate-shaped materials arranged horizontally. The cathode electrode 2 and the anode electrode 1 are plate-shaped materials arranged horizontally, which is conducive to the storage of liquid in the water absorbing member 3 and can avoid liquid leakage. In addition, as an alternative embodiment, the cathode electrode 2 can also be other structures such as a grid shape and a mesh shape.

[0052] like Figure 1 As shown, in the electrochemical hydrogen peroxide generating device provided in this embodiment, the water absorbing member 3 is a plate-shaped structure made of porous water-retaining material, ion exchange membrane or proton exchange membrane. The water absorbing member 3 is made of porous water-retaining material, ion exchange membrane or proton exchange membrane, which is conducive to adsorbing and storing liquid. The water absorbing member 3 is set as a plate-shaped structure and can be closely attached to the anode electrode 1 and the cathode electrode 2, which is conducive to reducing the internal resistance between the anode electrode 1 and the cathode electrode 2, and can also make the cold generated by the cold end of the semiconductor refrigeration sheet 4 through temperature conduction, so that the temperature of the anode electrode 1, the water absorbing member 3 and the cathode electrode 2 is reduced. Specifically, the porous water-absorbing material is a material that can absorb water, such as fiber paper and cotton cloth. Compared with the porous water-absorbing material, the ion exchange membrane and the proton exchange membrane have a higher cost, but better conductivity. The water-absorbing member 3 is insulated before absorbing water and conductive after absorbing water. An appropriate amount of electrolyte can be added to the water-absorbing member 3, which is beneficial to reduce resistance and improve the conductivity of the water-absorbing member 3. Only a small amount of liquid is needed to generate a large electrolysis current, so that the hydrogen peroxide production efficiency is higher.

[0053] How to use

[0054] like Figure 1 As shown, the electrochemical hydrogen peroxide generating device provided in this embodiment, when in use, is cooled by the semiconductor refrigeration sheet 4, and the temperature of the anode electrode 1, the water absorbing member 3 and the cathode electrode 2 is reduced by temperature transfer, and the moisture in the air is condensed into liquid, and the water absorbing member 3 adsorbs and stores the liquid, so that the circuit between the cathode electrode 2 and the anode electrode 1 is connected, and the moisture is electrolyzed to generate hydrogen peroxide, and released into the air to play a sterilization and disinfection role.

[0055] In addition, if Figure 2 As shown, this embodiment also provides a method for producing hydrogen peroxide, using the device for electrochemically producing hydrogen peroxide described in the above embodiment, comprising the following steps: absorbing liquid into the water absorbing member 3 and storing it; detecting the current, detecting the working current between the anode electrode 1 and the cathode electrode 2, and judging whether it reaches the preset current; if the working current between the anode electrode 1 and the cathode electrode 2 is greater than the preset current, hydrogen peroxide is produced.

[0056] When in use, liquid is sucked and stored through the water absorbing member 3, so that the circuit between the cathode electrode 2 and the anode electrode 1 is turned on, and the working current between the anode electrode 1 and the cathode electrode 2 is detected. If the working current between the anode electrode 1 and the cathode electrode 2 is greater than the preset current, hydrogen peroxide is produced. If the working current between the anode electrode 1 and the cathode electrode 2 is less than the preset current, liquid is continuously sucked and stored through the water absorbing member 3, and the above current detection process is repeated. The hydrogen peroxide production method provided in this embodiment prepares hydrogen peroxide by absorbing moisture in the air through the water absorbing member 3, which solves the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte.

[0057] It should be noted that when the working current between the anode electrode 1 and the cathode electrode 2 is greater than the preset current, the working voltages of the refrigeration device, the anode electrode 1 and the cathode electrode 2 in the electrochemical hydrogen peroxide production device described in the above embodiment are reduced so that the working current between the anode electrode 1 and the cathode electrode 2 is equal to the preset value, thereby continuously and efficiently producing hydrogen peroxide and avoiding situations such as increased energy consumption, material sintering or corrosion caused by excessive current.

[0058] like Figure 2 As shown, in the method for producing hydrogen peroxide provided in this embodiment, by cooling toward the anode electrode 1, liquid is absorbed and stored in the water absorbing member 3 between the anode electrode 1 and the cathode electrode 2. The refrigeration device cools toward the anode electrode 1, so that the moisture in the air condenses into liquid, and the liquid is absorbed and stored in the water absorbing member 3, which provides raw materials for the electrode to produce hydrogen peroxide, thereby solving the problem that the hydrogen peroxide production device in the prior art needs to manually add electrolyte.

[0059] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A device for electrochemically generating hydrogen peroxide, characterized in that: include: A cathode electrode (2); an anode electrode (1), wherein the anode electrode (1) and the cathode electrode (2) are arranged at an interval; The water absorbing member (3) is arranged between the anode electrode (1) and the cathode electrode (2), and the water absorbing member (3) is in close contact with the anode electrode (1) and the cathode electrode (2).

2. The device for electrochemically generating hydrogen peroxide according to claim 1, characterized in that: Also includes: The refrigeration device cools the space between the anode electrode (1) and the cathode electrode (2) so as to reduce the temperature between the anode electrode (1) and the cathode electrode (2) and condense the liquid.

3. The device for electrochemically generating hydrogen peroxide according to claim 1, characterized in that: The anode electrode (1) is made of heat-conducting and electrically-conductive material.

4. The device for electrochemically generating hydrogen peroxide according to claim 3, characterized in that: A semiconductor cooling sheet (4) is disposed in contact with a side of the anode electrode (1) that is away from the cathode electrode (2).

5. The device for electrochemically generating hydrogen peroxide according to claim 1, characterized in that: The cathode electrode (2) is made of porous conductive material.

6. The device for electrochemically generating hydrogen peroxide according to claim 5, characterized in that: A fan (5) is provided on the side of the cathode electrode (2) away from the anode electrode (1).

7. The device for electrochemically generating hydrogen peroxide according to any one of claims 1 to 6, characterized in that: The cathode electrode (2) and the anode electrode (1) are plate-shaped materials arranged horizontally.

8. The device for electrochemically generating hydrogen peroxide according to claim 7, characterized in that: The water absorbing member (3) is a plate-shaped structure made of porous water-retaining material, ion exchange membrane or proton exchange membrane.

9. A method for producing hydrogen peroxide, characterized in that: The device for electrochemically generating hydrogen peroxide according to any one of claims 1 to 8 comprises the following steps: Absorbing and storing liquid in the water absorbing member (3); Detecting current, detecting the working current between the anode electrode (1) and the cathode electrode (2), and determining whether a preset current has been reached; If the operating current between the anode electrode (1) and the cathode electrode (2) is greater than a preset current, hydrogen peroxide is produced.

10. The method for producing hydrogen peroxide according to claim 9, characterized in that: By cooling the anode electrode (1), liquid is absorbed and stored in the water absorbing member (3) between the anode electrode (1) and the cathode electrode (2).

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