A hydrogen peroxide catalytic device with a baffle
Patent Information
- Application Number
- CN202522221161.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-21
AI Technical Summary
传统的紫外光源通常采用汞灯，存在能耗高、寿命短、含汞污染以及体积大等缺点
[0014] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a baffled hydrogen peroxide catalytic device, which enables water to react and generate hydrogen peroxide in the outer cylinder. After the water and hydrogen peroxide enter the inner cylinder, they can generate highly active hydroxyl radicals under the action of ultraviolet light emitted by the UV-LED light source. The generation and catalysis of hydrogen peroxide are integrated into one device. In the process of purifying water, there is no need to add chemicals, which improves the efficiency of hydrogen peroxide catalysis, improves the efficiency of water purification, and ensures the purification effect of water.
Smart Images
Figure CN224754268U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrochemical green synthesis and water treatment technology, and more specifically to a baffled hydrogen peroxide catalytic device. Background Technology
[0002] With industrial development, traditional water purification technologies are struggling to cope with complex water quality challenges. Advanced oxidation technologies (AOPs) have become a research hotspot in the water treatment field due to their ability to generate highly oxidizing hydroxyl radicals (·OH). Among them, the catalytic oxidation system of hydrogen peroxide (H2O2) is widely used.
[0003] The traditional Fenton process requires the addition of Fe. 2+ The use of H2O2 in electrochemical processes presents challenges such as a narrow pH range, the generation of iron sludge, and risks associated with its storage and transportation. Electrochemical methods can generate H2O2 in situ via oxygen reduction reactions, thus addressing the storage and transportation issues inherent in the Fenton process. To resolve the iron sludge problem, ultraviolet (UV) light is typically introduced to replace the iron source and catalyze the production of highly oxidizing free radicals from H2O2. Traditional UV light sources, such as mercury lamps, suffer from high energy consumption, short lifespan, mercury pollution, and large size. Furthermore, existing UV-coupled devices for electrosynthesizing H2O2 often suffer from structural separation, complex processes, and poor wavelength matching, resulting in low hydroxyl radical yields and limited treatment effectiveness. Therefore, there is an urgent need to develop an integrated reaction device that is highly integrated, efficient, and easy to operate. Utility Model Content
[0004] In view of this, the present invention provides a baffled hydrogen peroxide catalytic device capable of generating hydrogen peroxide and catalyzing the hydrogen peroxide to produce highly oxidizing free radicals. To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a baffled hydrogen peroxide catalytic device, comprising: Water inlet tank; A baffled reactor includes an outer cylinder and an inner cylinder. The upper end of the outer cylinder has an opening, and the upper end of the inner cylinder has an opening. The inner cylinder is fixed inside the outer cylinder, and an annular gap is formed between the outer cylinder and the inner cylinder. A water inlet is provided at the bottom end of the outer cylinder, and the water inlet communicates with the annular gap. A water inlet pipe is provided between the water outlet of the water inlet tank and the water inlet of the outer cylinder. A water supply pump is provided on the water inlet pipe. An anode and a cathode are arranged at intervals inside the annular gap. The anode and the cathode are respectively connected to the positive and negative terminals of an external DC power supply. A water outlet is provided on the side wall of the inner cylinder. A UV-LED light source is provided inside the inner cylinder. A water storage tank, wherein the inlet of the water storage tank is connected to the outlet of the inner cylinder via an outlet pipe.
[0005] Furthermore, a perforated plate is provided at the opening of the inner cylinder, and the perforated plate is provided with multiple holes, the perforation rate of the perforated plate being 40% to 60%.
[0006] Furthermore, it also includes an air pump, the air pump's outlet end of which is connected to an air inlet pipe, the air inlet pipe being in communication with the annular gap.
[0007] Furthermore, two air pumps are provided, and a first aeration stone and a second aeration stone are provided in the annular gap. The air inlet end of the first aeration stone and the air inlet end of the second aeration stone are respectively connected to an air inlet pipe.
[0008] Furthermore, a plastic mesh is provided between the anode and the cathode.
[0009] Furthermore, the UV-LED light source is located at the bottom of the inner cylinder. The UV-LED light source is a multi-band array light source with a wavelength of 180-360nm and a half-power angle of 10°~50°.
[0010] Furthermore, an electromagnetic flow meter is installed on the water inlet pipe, and the electromagnetic flow meter is located between the water supply pump and the water inlet of the outer cylinder.
[0011] Furthermore, a waterproof insulation structure is provided between the UV-LED light source and the inner cylinder.
[0012] Furthermore, a cover is provided at the opening of the outer cylinder.
[0013] Furthermore, the ratio of the height of the inner cylinder to its inner diameter is 3:1 to 8:1, and the reflectivity of the inner wall of the inner cylinder is higher than 90%.
[0014] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a baffled hydrogen peroxide catalytic device, which enables water to react and generate hydrogen peroxide in the outer cylinder. After the water and hydrogen peroxide enter the inner cylinder, they can generate highly active hydroxyl radicals under the action of ultraviolet light emitted by the UV-LED light source. The generation and catalysis of hydrogen peroxide are integrated into one device. In the process of purifying water, there is no need to add chemicals, which improves the efficiency of hydrogen peroxide catalysis, improves the efficiency of water purification, and ensures the purification effect of water. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0016] Figure 1 A schematic diagram of the baffled hydrogen peroxide catalytic device provided by this utility model; Figure 2 A schematic diagram of the perforated plate provided by this utility model.
[0017] In the diagram: 1. Inlet tank; 2. Water pump; 3. Electromagnetic flow meter; 4. Baffle reactor; 5. Inlet pipe; 6. Outlet pipe; 7. Storage tank; 8. Outer cylinder; 9. Cover; 10. Inner cylinder; 11. First aeration stone; 12. Second aeration stone; 13. Anode; 14. Plastic mesh; 15. Cathode; 16. UV-LED light source; 17. Wiring; 18. Perforated plate; 19. Power supply. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] See Figure 1-2 This utility model discloses a baffled hydrogen peroxide catalytic device, comprising: Water inlet tank 1; The baffled reactor 4 includes an outer cylinder 8 and an inner cylinder 10. The upper end of the outer cylinder 8 is provided with an opening, and the upper end of the inner cylinder 10 is provided with an opening. The inner cylinder 10 is fixed inside the outer cylinder 8, and an annular gap is formed between the outer cylinder 8 and the inner cylinder 10. The bottom end of the outer cylinder 8 is provided with a water inlet, which is connected to the annular gap. A water inlet pipe 5 is provided between the water outlet of the water inlet tank 1 and the water inlet of the outer cylinder 8. A water supply pump 2 is provided on the water inlet pipe 5. An anode 13 and a cathode 15 are arranged at intervals inside the annular gap. The anode 13 and the cathode 15 are respectively connected to the positive and negative terminals of an external DC power supply 19. A water outlet is provided on the side wall of the inner cylinder 10. A UV-LED light source 16 is provided inside the inner cylinder 10. Water storage tank 7, the water inlet of water storage tank 7 is connected to the water outlet of inner cylinder 10 through water outlet pipe 6.
[0020] During the purification of the water in the inlet tank 1, the water in the inlet tank 1 enters the annular gap between the outer cylinder 8 and the inner cylinder 10 under the action of the water supply pump 2. The water undergoes an oxygen evolution reaction (OER) on the surface of the anode 13, and the generated oxygen diffuses towards the vicinity of the cathode. The water and oxygen undergo an oxygen reduction reaction (ORR) on the surface of the cathode 15, generating hydrogen peroxide in situ. As water is continuously introduced into the annular gap, the water level continuously rises. When the water level is higher than the opening of the inner cylinder 10, the water flows into the interior of the inner cylinder 10. Simultaneously, oxygen evolution and reduction reactions continuously occur within the annular gap. The hydrogen peroxide generated by the reduction reaction flows into the inner cylinder 10 along with the water within the annular gap. The UV-LED light source 16 inside the inner cylinder 10 emits ultraviolet light, which excites the hydrogen peroxide in the water, generating highly active hydroxyl radicals to purify the water within the inner cylinder 10. After being purified by hydroxyl radicals and hydrogen peroxide, the water in the inner cylinder 10 is discharged into the water storage tank 7 through the outlet pipe 6, thus completing the purification of the water and ensuring the purification effect.
[0021] Water enters the annular gap from the bottom and then from the top of the inner cylinder 10, extending the water's residence time within the annular gap to generate more hydrogen peroxide. This allows for the generation of more hydroxyl radicals inside the inner cylinder 10 and also prolongs the mixing time between hydrogen peroxide and water, resulting in a more uniform distribution of hydrogen peroxide within the water and ensuring effective water purification.
[0022] In some embodiments, a perforated plate 18 is provided at the opening of the inner cylinder 10, and the perforated plate 18 is provided with a plurality of holes, the perforation rate of the perforated plate 18 being 40% to 60%.
[0023] In some embodiments, the perforation ratio on the perforated plate 18 is 50%.
[0024] The water and hydrogen peroxide in the annular gap enter the inner cylinder 10 through the perforated plate 18 after passing through the opening of the inner cylinder 10, so that the mixture of water and hydrogen peroxide enters the inner cylinder 10 evenly.
[0025] In some embodiments, the system further includes an air pump, the outlet of which is connected to an air inlet pipe, which communicates with the annular gap.
[0026] By introducing oxygen into the annular gap through an air pump and an air inlet pipe, the efficiency of hydrogen peroxide generation is improved, and more hydrogen peroxide can be generated at the same time.
[0027] In some embodiments, two air pumps are provided, and a first aeration stone 11 and a second aeration stone 12 are provided in the annular gap. The air inlet end of the first aeration stone 11 and the air inlet end of the second aeration stone 12 are respectively connected to an air inlet pipe.
[0028] An air pump introduces outside air into the first aeration stone 11 and the second aeration stone 12. After passing through the first aeration stone 11 and the second aeration stone 12, the gas flows into the annular gap. The first aeration stone 11 and the second aeration stone 12 expand the contact area between the gas and the water, thereby improving the efficiency of hydrogen peroxide generation.
[0029] In some embodiments, a plastic mesh 14 is provided between the anode 13 and the cathode 15.
[0030] In some embodiments, the plastic mesh 14 is made of polypropylene or polyethylene.
[0031] Insulation via plastic mesh 14 prevents the anode and cathode from interfering with each other, ensuring the smooth progress of the oxygen evolution reaction and reduction reaction.
[0032] In some embodiments, the UV-LED light source 16 is disposed at the bottom of the inner cylinder 10. The UV-LED light source 16 is a multi-band array light source with a wavelength of 180-360nm and a half-power angle of 10°~50°.
[0033] In some embodiments, the ratio of the height of the inner cylinder 10 to its inner diameter is 3:1 to 8:1, and the reflectivity of the inner wall of the inner cylinder 10 is higher than 90%.
[0034] In some embodiments, the ratio of the height to the inner diameter of the inner cylinder 10 is designed to be 5:1. The inner wall of the inner cylinder 10 is polished so that the reflectivity of the inner wall of the inner cylinder 10 is higher than 95%, which is beneficial for multiple reflections and full utilization of ultraviolet light.
[0035] In some embodiments, the wiring 17 of the UV-LED light source 16 is connected to an external power supply 19. The UV-LED light source 16 has an array structure, is a combination of wavelengths of 250nm and 310nm, has a half-power angle of 30°, and has an optical power of 200 mW. The UV-LED light source 16 is connected to the external power supply 19 through the wiring 17.
[0036] By combining the UV-LED array light source with the inner wall of the inner cylinder 10, the light energy is fully utilized, ensuring that the ultraviolet light can irradiate more hydrogen peroxide liquid, thereby generating more hydroxyl radicals and ensuring the purification effect on the water inside the inner cylinder 10.
[0037] In some embodiments, an electromagnetic flow meter 3 is provided on the water inlet pipe 5, and the electromagnetic flow meter 3 is located between the water supply pump 2 and the water inlet of the outer cylinder 8.
[0038] The electromagnetic flowmeter 3 precisely controls and measures the flow rate of water entering the outer cylinder 8.
[0039] In some embodiments, a waterproof insulation structure is provided between the UV-LED light source 16 and the inner cylinder 10.
[0040] In some embodiments, a cover 9 is provided at the opening of the outer cylinder 8.
[0041] In some embodiments, the anode 13 is a titanium-based coated electrode, the coating being made of one or more mixtures of platinum, iridium oxide, ruthenium oxide, tantalum oxide, tin oxide, antimony oxide, or titanium suboxide.
[0042] In some embodiments, the cathode 15 is a carbon-based oxygen reduction cathode, and the surface contact angle of the cathode 15 is 120°~150°.
[0043] In some embodiments, the surface of the cathode 15 is hydrophobically modified, and the contact angle is 140°.
[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.
[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A baffle-type hydrogen peroxide catalytic device, characterized in that, include: Water inlet tank; A baffled reactor includes an outer cylinder and an inner cylinder. The upper end of the outer cylinder has an opening, and the upper end of the inner cylinder has an opening. The inner cylinder is fixed inside the outer cylinder, and an annular gap is formed between the outer cylinder and the inner cylinder. A water inlet is provided at the bottom end of the outer cylinder, and the water inlet communicates with the annular gap. A water inlet pipe is provided between the water outlet of the water inlet tank and the water inlet of the outer cylinder. A water supply pump is provided on the water inlet pipe. An anode and a cathode are arranged at intervals inside the annular gap. The anode and the cathode are respectively connected to the positive and negative terminals of an external DC power supply. A water outlet is provided on the side wall of the inner cylinder. A UV-LED light source is provided inside the inner cylinder. A water storage tank, wherein the inlet of the water storage tank is connected to the outlet of the inner cylinder via an outlet pipe.
2. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, The inner cylinder is provided with a perforated plate at its opening, and the perforated plate is provided with multiple holes, the perforation rate of the perforated plate being 40% to 60%.
3. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, It also includes an air pump, the air pump's outlet end of which is connected to an air inlet pipe, and the air inlet pipe communicates with the annular gap.
4. The baffled hydrogen peroxide catalytic device according to claim 3, characterized in that, Two air pumps are provided, and a first aeration stone and a second aeration stone are provided in the annular gap. The air inlet end of the first aeration stone and the air inlet end of the second aeration stone are respectively connected to an air inlet pipe.
5. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, A plastic mesh is provided between the anode and the cathode.
6. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, The UV-LED light source is located at the bottom of the inner cylinder. The UV-LED light source is a multi-band array light source with a wavelength of 180-360nm and a half-power angle of 10°~50°.
7. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, An electromagnetic flow meter is installed on the water inlet pipe, and the electromagnetic flow meter is located between the water supply pump and the water inlet of the outer cylinder.
8. The baffled hydrogen peroxide catalytic device according to claim 6, characterized in that, A waterproof insulation structure is provided between the UV-LED light source and the inner cylinder.
9. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, The opening of the outer cylinder is provided with a cover.
10. The baffled hydrogen peroxide catalytic device according to claim 1, characterized in that, The ratio of the height of the inner cylinder to its inner diameter is 3:1 to 8:1, and the reflectivity of the inner wall of the inner cylinder is higher than 90%.