CN115198288A - Integrated device and method for producing high-purity hydrogen peroxide by water-oxygen photoelectrocatalysis - Google Patents

Abstract

The invention discloses an integrated device and a preparation method for producing hydrogen peroxide by photoelectric catalysis of water and oxygen, comprising: a water-oxygen purification system, which has a water inlet pipeline and an air inlet pipeline, and is configured to transport and purify water and air. ; The photoelectric catalytic system is used to photoelectrically catalyze the water and air delivered by the water oxygen purification system to generate hydrogen peroxide; the storage refining system detects and purifies the produced hydrogen peroxide to obtain high-purity hydrogen peroxide; the photoelectric catalytic system includes the following steps: A cathode compartment, an anion exchange membrane, a solid electrolyte, a cation exchange membrane and an anode compartment are arranged in parallel, and the cathode compartment is provided with a water inlet, an air inlet and an air outlet. The integrated device can efficiently convert water and air into hydrogen peroxide solutions of different purities and concentrations, thereby storing light energy and electrical energy as the chemical energy of hydrogen peroxide, and integrating the production and purification of hydrogen peroxide to meet the The high-purity hydrogen peroxide solution can be used as it is produced to avoid the decomposition and safety problems of hydrogen peroxide.

Description

Integrated device and method for producing high-purity hydrogen peroxide by water-oxygen photoelectric catalysis

technical field

The invention belongs to the technical field of synthesizing hydrogen peroxide, and in particular relates to an integrated device and method for producing high-purity hydrogen peroxide by water-oxygen photoelectric catalysis.

Background technique

Hydrogen peroxide is a green chemical widely used in disinfection, water purification, industrial pulp bleaching, chemical synthesis and electronics industry. In recent years, the international annual demand for hydrogen peroxide has increased year by year, especially in Southeast Asia, South Korea, Japan and other places, the supply of hydrogen peroxide is in short supply, thus showing a huge market potential. The main production method of hydrogen peroxide is the anthraquinone method. Although this method is mature in technology, it consumes a lot of energy and produces organic pollution, which seriously restricts the development of hydrogen peroxide. The direct synthesis of hydrogen peroxide from hydrogen and oxygen is a green and energy-saving alternative to the production of high-purity hydrogen peroxide, but the mixing of hydrogen and oxygen in this process brings safety problems, which hinders the practical application of this method. Therefore, the research focus has gradually shifted to safer and more efficient hydrogen peroxide synthesis methods.

Two-electron transfer-based electrochemical redox reactions, i.e. the simultaneous conversion of oxygen and water to hydrogen peroxide via electrocatalysis, is an emerging method for hydrogen peroxide synthesis. Compared with the first two production processes, the advantages of this method are: 1) using green natural resources, without consuming fossil fuels; 2) clean environment, no organic waste; 3) mild reaction conditions, no danger of explosion; 4) theoretically Has the highest energy conversion efficiency. In recent years, although researchers have made certain achievements in the development of hydrogen peroxide electrocatalysts, the large-scale and on-site production of hydrogen peroxide based on water-oxygen photocatalysis still has limitations.

SUMMARY OF THE INVENTION

The invention aims to provide an integrated device for producing high-purity hydrogen peroxide by photoelectric catalysis of water and oxygen, which can efficiently convert water and air into hydrogen peroxide solutions of different purities and concentrations, so as to store light energy and electrical energy as peroxide The chemical energy of hydrogen enables the production and use of hydrogen peroxide solution.

In order to achieve the above purpose, according to one aspect of the present invention, an integrated device for producing high-purity hydrogen peroxide by water-oxygen photoelectric catalysis is provided, comprising: a water-oxygen purification system, which has a water inlet pipeline and an air inlet pipeline, which are respectively configured as For transporting water and air and purifying water and air; a photoelectric catalytic system, configured to photoelectrically catalyze the water and air transported by the water and oxygen purification system to generate hydrogen peroxide; and a storage refining system for photoelectric The hydrogen peroxide produced by the catalytic system is detected and purified to obtain high-purity hydrogen peroxide; wherein, the photoelectric catalytic system includes a cathode chamber, a solid electrolyte and an anode chamber arranged in parallel in sequence, and an anion is arranged between the cathode chamber and the solid electrolyte. exchange membrane, a cation exchange membrane is arranged between the solid electrolyte and the anode chamber; the cathode chamber is provided with a water inlet connected with the water inlet pipeline of the water-oxygen purification system, an air inlet and an air outlet connected with the air inlet pipeline .

According to the present invention, one side of the anode chamber is provided with an irradiation device configured to emit a visible light source to irradiate the anode chamber.

According to the present invention, the water inlet pipeline is provided with a water inlet, a water flow solenoid valve, a hydraulic press, a purification column, a water flow velocity valve and a water inlet passage solenoid valve in sequence; the water inlet passage solenoid valve has three outlets, which are respectively connected to the cathode chamber. , the solid electrolyte is communicated with the anode compartment.

According to the present invention, an air inlet, an air pump, a filter screen and a gas flow rate valve are sequentially arranged on the air inlet pipeline, and the gas flow rate valve communicates with the cathode chamber.

According to the present invention, the cathode chamber has an outlet, and the outlet is sequentially connected to the check valve and the air outlet. Preferably, the cathode chamber is equipped with a pressure gauge.

Preferably, one end of the solid electrolyte is connected to the solenoid valve of the water inlet passage, and the other end is connected to the detector.

Preferably, one end of the anode chamber is connected to the electromagnetic valve of the water inlet passage, and the other end is connected to the detector.

According to the present invention, the storage refinement system further includes a detector in communication with the photoelectric catalytic system and configured for quality detection of the produced hydrogen peroxide.

Preferably, the storage refining system further comprises a hydrogen peroxide storage tank, a pressurizing pump and an air flow solenoid valve sequentially communicated with the detector, and the hydrogen peroxide in the hydrogen peroxide storage tank is passed through the air flow electromagnetic valve by the pressurizing pump One end of the valve flows out to obtain high-purity hydrogen peroxide.

Preferably, the storage refining system further includes a refining column arranged at the end of the gas flow solenoid valve, configured to refine the high-purity hydrogen peroxide to obtain ultra-high-purity hydrogen peroxide.

According to the present invention, the purification column is a three-stage purification column, including an activated carbon purification column, an adsorption resin purification column and an ultraviolet oxidation lamp which are arranged in sequence. Preferably, the filter screen includes a two-stage filter structure of a dust bag and a drying screen arranged in sequence.

According to the present invention, the detector is composed of a programmable program controller, a CPU module equipped with a DSP chip, and a digital display screen to detect the concentration and storage of hydrogen peroxide solution, the internal working state of the machine, historical data query, and consumables replacement prompts in real time. and fault alarm. Preferably, the refining column is a two-stage refining column, including an adsorption resin refining column with anti-oxidation function and a nylon ultrafiltration membrane refining column.

According to another aspect of the present invention, an integrated method for producing high-purity hydrogen peroxide by photoelectric catalysis of water and oxygen is also provided, comprising the following steps: S1. Open the water inlet pipeline and the air inlet pipeline of the water and oxygen purification system, so that the water After passing through the water flow solenoid valve, it is pressurized by the hydraulic press to enter the purification column and pre-purified. The pre-purified water flow enters the photoelectric catalytic system through the water inlet passage solenoid valve under the control of the water flow velocity valve; the air on the intake pipe is pressurized by the air pump, and the The purified air is filtered by the filter screen, which is adjusted by the flow rate valve and enters the cathode chamber of the photoelectric catalytic system; S2. Adjust the gas inflow and outflow ratio in the cathode chamber to make the working pressure 0-1Mpa, and the purified air will undergo oxygen reduction reaction in the cathode chamber. , generate pure hydrogen peroxide, hydrogen peroxide diffuses into the solid electrolyte in the form of HO ^2- through the anion exchange membrane between the cathode chamber and the solid electrolyte, and the excess air flows out from the other end of the cathode chamber through the check valve and the air outlet Equipment; S3, the water after pre-purification undergoes water oxidation reaction in the anode chamber to generate pure hydrogen peroxide and H ⁺ , the hydrogen peroxide is washed out of the anode chamber, and H ⁺ along the cation exchange membrane between the anode chamber and the solid electrolyte Diffusion into the solid electrolyte; S4, HO ^2- diffused from the cathode chamber combines with H ⁺ diffused from the anode chamber to form H ₂ O ₂ , which is then washed out of the photoelectric catalytic system; After the product quality is detected by the detector, the hydrogen peroxide flows into the storage tank for use; the hydrogen peroxide in the storage tank flows into the airflow solenoid valve through the pressurized pump, and flows out of the equipment at one end of the airflow solenoid valve to obtain high-purity hydrogen peroxide; The hydrogen oxide enters the refining column through the other end of the gas flow solenoid valve and is refined to obtain ultra-high-purity hydrogen peroxide.

According to the present invention, the main material of the cathode chamber of the photoelectric catalytic system is porous carbon oxide paper, the working area is 100cm ² , the working current density is 0.2A/cm ² , and the working pressure of the cathode chamber is 0-1Mpa. Preferably, the anode chamber electrode material is a porous carbon oxide paper-bismuth vanadate composite material, the effective working area is 100 cm ² , and the working current density is 0.2 A/cm ² . Preferably, the air flow on the intake pipeline enters the photoelectric catalytic system at a flow rate of 100 mL/min after being adjusted by the gas flow rate valve.

Preferably, the material of the solid electrolyte is styrene-divinylbenzene copolymer, and the thickness is 0.5 cm. Preferably, step S3 also includes a process of irradiating the anode chamber, and the light source for irradiation is a visible light source with a power of 0-200W. Preferably, the water supply flow rate of the water and oxygen purification system is 10-1000mL/h, the pressure of the air pump is 20kPa, and the air supply flow rate is 100mL/min.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The integrated device of the present invention can efficiently convert water and air into hydrogen peroxide solutions of different purities and concentrations, thereby storing light energy and electrical energy as the chemical energy of hydrogen peroxide, and purifying the production and purification of hydrogen peroxide Integrated integration provides a solution for small and medium-scale production of high-purity hydrogen peroxide solution, which satisfies the production and use of ultra-high-purity hydrogen peroxide solution, and avoids the decomposition and safety of hydrogen peroxide during storage and transportation. question.

(2) The present invention uses green natural resources, is environmentally friendly, and has mild reaction conditions and no danger of explosion; co-catalyzed synthesis of high-quality hydrogen peroxide at the yin and yang poles, theoretically has the highest energy conversion efficiency.

(3) The cathode chamber has high-voltage reaction function, high oxygen utilization rate, high current density, and high H ₂ O ₂ production efficiency; the anode chamber is assisted by illumination, which directly converts light energy into high value-added chemicals and saves electricity resources.

Description of drawings

1 is a schematic structural diagram of an integrated device for producing high-purity hydrogen peroxide by water-oxygen photoelectric catalysis of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be emphasized that the specific embodiments described herein are only used to better illustrate the present invention, and are some rather than all embodiments of the present invention, so they are not intended to limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in FIG. 1 , the present invention provides an integrated device for the production of hydrogen peroxide by photoelectric catalysis of water and oxygen, including a water and oxygen purification system, a photoelectric catalytic system and a storage refining system, wherein the water and oxygen purification system has a water inlet pipeline and The air inlet pipes are respectively configured to transport and purify water and oxygen. The photoelectric catalytic system is configured to photoelectrically catalyze the water and oxygen delivered from the water oxygen purification system to generate hydrogen peroxide. The storage refining system detects and purifies the hydrogen peroxide produced by the photoelectric catalytic system to obtain high-purity hydrogen peroxide. The integrated device can efficiently convert water and air into hydrogen peroxide solutions of different purities and concentrations, so as to store light energy and electrical energy as the chemical energy of hydrogen peroxide, and realize the use of hydrogen peroxide solutions as they are produced and used for medical treatment. , electronics, food and other fields bring convenience, and at the same time avoid the decomposition and safety problems of hydrogen peroxide during storage and transportation.

As shown in Figure 1, the water and oxygen purification system includes a water inlet pipeline and an air intake pipeline. The water inlet pipeline is sequentially provided with a water inlet, a water flow solenoid valve 1, a hydraulic press 2, a purification column 3, a water flow velocity valve 4 and a water inlet passage solenoid valve. 5, wherein the solenoid valve 5 of the water inlet passage has three outlets, which are respectively communicated with the cathode chamber 9, the solid electrolyte 13 and the anode chamber 14. The incoming water reaches the hydraulic press 2 through the water flow solenoid valve 1, and is pressurized into the purification column 3 for pre-purification. Enter the photocatalytic system. Preferably, the purification column 3 on the water inlet pipeline is a three-stage purification column, including an activated carbon purification column, an adsorption resin purification column and an ultraviolet oxidation lamp arranged in sequence.

As shown in FIG. 1 , an air inlet, an air pump 6 , a filter screen 7 and a gas flow valve 8 are sequentially arranged on the air inlet pipeline, wherein the gas flow valve 8 communicates with the cathode chamber 9 . The air enters through the air inlet, is pressurized by the air pump 6, filtered through the filter screen 7 to obtain purified air, adjusted by the gas flow rate valve 8, and finally enters the photoelectric catalytic system at a flow rate of 100mL/min. Preferably, the filter screen 7 on the air inlet pipeline of the water-oxygen purification system is a two-stage filter, followed by a dust bag and a drying screen.

The photoelectric catalytic system includes a cathode chamber 9 , a solid electrolyte 13 and an anode chamber 14 which are arranged in parallel. An anion exchange membrane 16 is arranged between the cathode chamber 9 and the solid electrolyte 13 , and a cation exchange membrane 17 is arranged between the solid electrolyte 13 and the anode chamber 14 . The cathode chamber 9 is provided with a water inlet communicated with the water inlet pipeline, an air inlet communicated with the air intake pipeline, and an outlet, and the outlet is connected to the check valve 11 and the air outlet 12 in sequence. Preferably, the cathode chamber 9 is equipped with a pressure gauge 10 .

Wherein, the solid electrolyte 13 and the anode chamber 14 are both provided with water inlets, which are respectively communicated with the solenoid valve 5 of the water inlet passage, and the other ends are both communicated with the detector 18 . Preferably, one side of the anode chamber 14 is further provided with an irradiation device configured to emit a visible light source 15 to irradiate the anode chamber 14 . Specifically, the power of the visible light source 15 is 0-200W.

As shown in FIG. 1, the storage refinement system also includes a detector 18 in communication with the solid electrolyte 13 and which detects the quality of the hydrogen peroxide produced. Preferably, the detector 18 is composed of a programmable program controller, a CPU module equipped with a DSP chip, and a digital display screen to detect the concentration and storage of hydrogen peroxide solution, the internal working state of the machine, historical data query, consumables replacement prompts and faults in real time Call the police.

According to the present invention, the storage refining system further includes a hydrogen peroxide storage tank 19, a pressurizing pump 20 and a water flow solenoid valve 21 which are sequentially communicated with the detector 18. After the hydrogen peroxide generated by the catalytic system is checked by the detector 18 to detect the quality of the product , flow into the hydrogen peroxide storage tank 19 for standby. The hydrogen peroxide in the hydrogen peroxide storage tank 19 flows out from the pressure pump 20 through one end of the water flow solenoid valve 21 to obtain high-purity hydrogen peroxide. The other end of the water flow solenoid valve 21 is also provided with a refining column 22, which is configured for refining high-purity hydrogen peroxide. The hydrogen peroxide enters the refining column 22 through the other end of the water flow solenoid valve 21 to obtain ultra-high-purity hydrogen peroxide. hydrogen oxide. Preferably, the refining column 22 of the storage refining system is a two-stage refining column, including an adsorption resin refining column with antioxidant function and a nylon ultrafiltration membrane refining column.

According to another aspect of the present invention, an integrated method for producing hydrogen peroxide by photoelectric catalysis of water and oxygen is also provided, comprising the following steps: S1. Open the water inlet pipeline and the air inlet pipeline of the water oxygen purification system, so that the water flows through the water flow. Solenoid valve 1, pressurized by hydraulic press 2 into purification column 3 and pre-purified, the pre-purified water enters the photoelectric catalytic system through solenoid valve 5 of water inlet passage under the control of water flow velocity valve 4; the air on the intake pipe passes through air pump 6 Pressurized, filtered through the filter screen 7 to obtain purified air, adjusted by the gas flow rate valve 8, and entered into the cathode chamber 9 of the photoelectric catalytic system.

S2, adjust the gas inflow and outflow ratio in the cathode chamber 9, make its working pressure be 0～1Mpa, the oxygen reduction reaction of the purified air takes place in the cathode chamber 9, generate pure hydrogen peroxide, and the hydrogen peroxide is passed through in the form of HO ^2- The anion exchange membrane 16 between the cathode chamber 9 and the solid electrolyte 13 diffuses into the solid electrolyte 13 , and excess air flows out from the other end of the cathode chamber 9 through the check valve 10 and the air outlet 11 .

S3, the water after the pre-purification undergoes water oxidation reaction in the anode chamber 14 to generate pure hydrogen peroxide and H ⁺ , the hydrogen peroxide is washed out of the anode chamber 14 , and H ⁺ along the positive ions between the anode chamber 14 and the solid electrolyte 13 The exchange membrane 17 diffuses into the solid electrolyte 13 .

S4. HO ^2- diffused from the cathode chamber 9 combines with H ⁺ diffused from the anode chamber 14 to form H ₂ O ₂ , which is then washed out of the photoelectric catalytic system by water.

S5. The hydrogen peroxide catalyzed by the photoelectric catalytic system flows into the storage tank 19 for standby after the product quality is detected by the detector 18; One end of the solenoid valve 21 flows out of the equipment to obtain high-purity hydrogen peroxide; the hydrogen peroxide enters the refining column 22 through the other end of the water flow solenoid valve 21 for refining to obtain ultra-high-purity hydrogen peroxide.

Preferably, the step S3 further includes a process of irradiating the anode chamber 14 , and the light source for irradiation is a visible light source 15 with a power of 0-200W.

According to the present invention, the main material of the cathode chamber 9 of the photoelectric catalytic system is porous carbon oxide paper, the effective working area is 100cm ² , the working current density is 0.2A/cm ² , and the working pressure of the cathode chamber 9 is 0-1Mpa. The purified air undergoes an oxygen reduction reaction in the cathode chamber 9 to generate pure hydrogen peroxide, which diffuses into the solid electrolyte 13 in the form of HO ^2- through the anion exchange membrane 16, and combines with H ^ions from the anode to generate H ₂ O ₂ , and then washed out of the photoelectric catalytic system by water. The excess air flows out of the equipment from the other end of the cathode chamber 9 through the check valve 11 and the air outlet 12 .

The reaction equation of cathode chamber 9 is as follows: O ₂ +H ₂ O+2e ^- →HO ^2- +OH ^-

The relationship between the reaction pressure in the cathode chamber 9 and the HO ^2- yield is shown in Table 1 below:

Table 1

Reaction pressure (MPa) 0 0.2 0.5 1 HO^2- Yield (mmol/cm²/h) 2.0 2.3 2.7 3.0

The main material of the anode chamber 14 is a porous carbon oxide paper-bismuth vanadate composite electrode, the effective working area is 100 cm ² , and the working current density is 0.2 A/cm ² . The prepurified water undergoes water oxidation reaction in the anode chamber 14 to generate H ⁺ and pure hydrogen peroxide (the hydrogen peroxide yield is 1 mmol/cm ² /h when the water flow rate is 1000 mL/h), and H ⁺ diffuses along the cation exchange membrane and enters The solid electrolyte 13, combines with HO ^2- from the cathode to generate H ₂ O ₂ and is washed out of the photoelectric catalytic system by water. The reaction equation of the anode chamber 14 is as follows: 2H ₂ O→H ₂ O ₂ +2(H ⁺ +e ⁻ )

In particular, by being irradiated by an external visible light source 15, the anode chamber 14 can convert light energy into photoelectrons, and the photoelectrons go to the cathode chamber 9 under a bias voltage to participate in the generation of H ₂ O ₂ . When the reaction pressure is 1MPa and the water flow rate is 1000mL/h, the relationship between the power of the visible light source 15 and the H ₂ O ₂ yield in the cathode chamber is shown in Table 2 below:

Table 2

Light power (W) 0 50 100 200 Yield of H₂O₂ (mmol/cm²/h) 3.0 3.3 3.6 3.7

By changing the flow rate of water supply, hydrogen peroxide aqueous solutions of different mass fractions can be obtained. Under 200W illumination, the relationship between the mass fraction of _H2O2 collected and the water flow rate is shown in Table ₃ below:

table 3

Water flow rate (mL/h) 10 50 100 500 1000 H₂O₂ mass fraction (wt.%) 30 18 10 2 1

Preferably, the air flow on the intake pipeline enters the photoelectric catalytic system at a flow rate of 100 mL/min after being adjusted by the gas flow rate valve 8 . Wherein, the material of the solid electrolyte 13 may be styrene-divinylbenzene copolymer with a thickness of 0.5 cm. The use of solid electrolyte can minimize the influence of the reaction medium on the purity and properties of hydrogen peroxide. For example, the liquid reaction medium is easy to introduce impurities, which increases the difficulty of removing impurities and increases the cost; the pH value of the liquid medium affects the stability of hydrogen peroxide, etc. .

Preferably, the water supply flow rate of the water and oxygen purification system is 10-1000mL/h, the pressure of the air pump 6 is 20kPa, and the air supply flow rate is 100mL/min

The working principle of the present invention is roughly as follows: the tap water passes through the solenoid valve 1, is pressurized by the hydraulic press 2 and enters the purification column 3 and is pre-purified. system. An air pump 6, a filter screen 7 and a flow rate valve 8 are arranged on the intake passage in turn. The air is pressurized by the air pump 6, and purified air is obtained through the filter screen 7, adjusted by the flow rate valve 8, and finally enters the photoelectric with a flow rate of 100mL/min. catalytic system. By adjusting the gas inflow and outflow ratio in the cathode chamber 9 of the photocatalytic system, the working pressure of the cathode chamber 9 is adjusted to 0-1 MPa. The purified air undergoes an oxygen reduction reaction in the cathode chamber 9 to generate pure hydrogen peroxide, which diffuses into the solid electrolyte 13 in the form of HO ^2- through the anion exchange membrane 16, and combines with H ^ions from the anode to generate H ₂ O ₂ , and then washed out of the catalytic system by water. The excess air flows out from the other end of the cathode chamber 9 through the check valve 10 and the air outlet 11 . The pre-purified water undergoes water oxidation reaction in the anode chamber 14 to generate pure hydrogen peroxide and H ⁺ , the hydrogen peroxide is washed out of the anode chamber 14 , and the H ⁺ diffuses into the solid electrolyte 13 along the cation exchange membrane 17 and combines with HO ^2- H ₂ O ₂ is formed. By changing the reaction pressure of the cathode chamber 9, the flow rate of the water supply, and the illumination power of the anode chamber 14, hydrogen peroxide aqueous solutions of different mass fractions (1-30 wt.%) can be obtained. The generated hydrogen peroxide flows into the storage tank 19 for standby after the quality of the product is detected by the detector 18 . The hydrogen peroxide in the storage tank 19 flows into the water flow solenoid valve 21 through the pressurizing pump 20, and flows out of the equipment at one end of the water flow solenoid valve 21 to obtain high-purity hydrogen peroxide; the high-purity hydrogen peroxide enters through the other end of the water flow solenoid valve 21. The refining column 22 flows out of the equipment to obtain ultra-high-purity hydrogen peroxide.

The specifications of hydrogen peroxide produced by the integrated device of the present invention are: high-purity hydrogen peroxide aqueous solution (total organic carbon content ≤ 20 ppm, total amount of various metal impurities ≤ 200 ppb, particles (≥ 0.5 μm) (pieces/mL) ≤25, total hydrogen peroxide content 1～30wt.%), ultra-high purity hydrogen peroxide aqueous solution (total organic carbon content ≤10ppm, total amount of various metal impurities ≤2ppb, particles (≥0.2μm) (pieces/mL) ≤5, the total content of hydrogen peroxide is 1～30wt.%).

The above are only the preferred application embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (10)

1. an integrated device for producing hydrogen peroxide by photoelectric catalysis of water and oxygen, is characterized in that, comprises: Water and oxygen purification system, with water inlet pipeline and air inlet pipeline, which are respectively configured to transport water and air and purify water and air; a photoelectric catalytic system configured to photoelectrically catalyze the production of hydrogen peroxide from the water and air delivered by the water oxygen purification system; and storing and refining the system to detect and purify the hydrogen peroxide produced by the photoelectric catalytic system to obtain hydrogen peroxide; Wherein, the photoelectric catalytic system comprises a cathode chamber (9), a solid electrolyte (13) and an anode chamber (14) arranged in parallel in sequence, and an anion is arranged between the cathode chamber (9) and the solid electrolyte (13). an exchange membrane (16), a cation exchange membrane (17) is provided between the solid electrolyte (13) and the anode chamber (14); the cathode chamber (9) is provided with a water inlet pipe for the water and oxygen purification system The water inlet communicated with the road, the air inlet and the air outlet communicated with the air inlet pipeline. 2. The integrated device according to claim 1, characterized in that, an irradiation device is provided on one side of the anode chamber (14), configured to emit a visible light source (15) to irradiate the anode chamber (14). 14) Irradiation. 3. The integrated device according to claim 1, wherein the water inlet pipeline is provided with a water inlet, a water flow solenoid valve (1), a hydraulic press (2), a purification column (3), a water flow velocity valve ( 4) with the water inlet passage solenoid valve (5); the water inlet passage solenoid valve (5) has three outlets, which are respectively communicated with the cathode chamber (9), the solid electrolyte (13) and the anode chamber (14). 4. The integrated device according to claim 1, characterized in that, an air inlet, an air pump (6), a filter screen (7) and a gas flow rate valve (8) are sequentially arranged on the air inlet pipeline, and the gas A flow valve (8) communicates with the cathode chamber (9). 5 . The integrated device according to claim 1 , wherein the cathode chamber ( 9 ) has an outlet, and the outlet is connected to the check valve ( 11 ) and the air outlet ( 12 ) in sequence. 6 . Preferably, the cathode chamber (9) is equipped with a pressure gauge (10). Preferably, both the solid electrolyte (13) and the anode chamber (14) are provided with water inlets, which are respectively connected to the solenoid valve (5) of the water inlet pipeline, and the other ends are both connected to the detector (18). 6. The integrated device according to claim 1, wherein the storage refining system further comprises a detector (18) connected to the photoelectric catalytic system and configured to detect the quality of the produced hydrogen peroxide ). Preferably, the storage refining system further comprises a hydrogen peroxide storage tank (19), a pressurizing pump (20) and a water flow solenoid valve (21) sequentially communicated with the detector (18), the hydrogen peroxide The hydrogen peroxide in the storage tank (19) flows out from the pressurizing pump (20) through one end of the water flow solenoid valve (21) to obtain hydrogen peroxide. Preferably, the storage refining system further comprises a refining column (22) arranged at the end of the water flow solenoid valve (21), configured to further refine the hydrogen peroxide to obtain a higher purity peroxide hydrogen. 7 . The integrated device according to claim 3 , wherein the purification column ( 3 ) is a three-stage purification column, comprising an activated carbon purification column, an adsorption resin purification column and an ultraviolet oxidation lamp arranged in sequence. 8 . Preferably, the filter screen (7) comprises a two-stage filter structure of a dust bag and a drying screen arranged in sequence. 8. The integrated device according to claim 1, characterized in that, the detector (18) of the storage refinement system is composed of a programmable program controller, a CPU module equipped with a DSP chip, and a digital display screen, so as to realize real-time Detect the concentration and reserves of hydrogen peroxide solution, the internal working status of the machine, historical data query, consumables replacement prompts and fault alarms. Preferably, the refining column (22) of the storage refining system is a two-stage refining column, including an adsorption resin refining column with antioxidant function and a nylon ultrafiltration membrane refining column. 9. An integrated method for producing hydrogen peroxide by photoelectric catalysis of water and oxygen, characterized in that, comprising the following steps: S1. Open the water inlet pipeline and the intake pipeline of the water oxygen purification system, so that the water is pressurized by the water flow solenoid valve (1) and the water press (2) into the purification column (3) and pre-purified, and the pre-purified water is in the water flow Under the control of the flow rate valve (4), it enters the photoelectric catalytic system through the solenoid valve (5) of the water inlet passage; the air on the intake pipe is pressurized by the air pump (6), and filtered through the filter screen (7) to obtain purified air, which passes through the gas flow rate valve. (8) adjustment, entering the cathode chamber (9) of the photoelectric catalytic system; S2, adjust the gas inflow and outflow ratio in the cathode chamber (9), so that the working pressure is 0～1Mpa, and the purified air undergoes oxygen reduction reaction in the cathode chamber (9) to generate pure hydrogen peroxide, and the hydrogen peroxide is HO ² The form of ^- diffuses into the solid electrolyte (13) through the anion exchange membrane (16) located between the cathode chamber (9) and the solid electrolyte (13), and excess air passes through the check valve (10) from the other end of the cathode chamber (9). ), the air outlet (11) flows out of the device; S3, the water after pre-purification undergoes water oxidation reaction in the anode chamber (14) to generate pure hydrogen peroxide and H ⁺ , the hydrogen peroxide is washed out of the anode chamber (14), and H ⁺ along the anode chamber (14) The cation exchange membrane (17) with the solid electrolyte (13) diffuses into the solid electrolyte (13); S4. HO ^2- diffused from the cathode chamber (9) combines with H ⁺ diffused from the anode chamber (14) to generate H ₂ O ₂ , which is then washed out of the photoelectric catalytic system by water; S5. The hydrogen peroxide catalyzed by the photoelectric catalytic system flows into the storage tank (19) for standby after the quality of the product is detected by the detector (18); the hydrogen peroxide in the storage tank (19) is passed through the pressurized pump (20) It flows into the water flow solenoid valve (21), and flows out of the device at one end of the water flow solenoid valve (21) to obtain hydrogen peroxide; the hydrogen peroxide enters the refining column (22) for refining through the other end of the water flow solenoid valve (21) to obtain the purity higher hydrogen peroxide. 10. The integrated method according to claim 9, wherein the main material of the cathode chamber (9) of the photoelectric catalytic system is porous carbon oxide paper, the working area is 100cm ² , and the working current density is 0.2A/cm ² , the working pressure of the cathode chamber (9) is 0～1Mpa. Preferably, the electrode material of the anode chamber (14) is porous carbon oxide paper-bismuth vanadate composite material, the effective working area is 100 cm ² , and the working current density is 0.2 A/cm ² . Preferably, the air flow on the air intake pipeline enters the photoelectric catalytic system at a flow rate of 100 mL/min after being adjusted by the gas flow rate valve (8). Preferably, the material of the solid electrolyte (13) is styrene-divinylbenzene copolymer, and the thickness is 0.5 cm. Preferably, the step S3 also includes a process of irradiating the anode chamber (14), the irradiation light source is a visible light source (15), and the power is 0-200W. Preferably, the water supply flow rate of the water and oxygen purification system is 10-1000mL/h, the pressure of the air pump (6) is 20kPa, and the air supply flow rate is 100mL/min.

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