Illumination reactor

Abstract

The utility model discloses an illumination reactor, and belongs to the technical field of gas catalysis quantitative determination. The device comprises a reaction box body, a gas conveying system and a gas circulating system, the reaction box body comprises an inner shell, an outer shell and a luminous box cover, the inner shell and the outer shell are arranged in a nested manner, an interlayer space for accommodating cooling water is formed between the inner shell and the outer shell, and the box cover covers the inner shell and the outer shell so as to seal and separate an inner cavity of the inner shell from the interlayer space; the gas conveying system can input or output reaction gas into or out of the inner shell; the gas circulation detection system comprises a peristaltic pump, a three-way valve and a gas chromatograph, one end of the peristaltic pump is communicated with the inner shell through a pipeline, and the other end of the peristaltic pump is respectively communicated with the gas chromatograph and the inner shell through the three-way valve, so that reacted gas substances are detected or reaction gas is driven to circularly flow. According to the utility model, uniform reaction of gas can be promoted, and the reaction efficiency of photocatalytic reaction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas catalytic quantitative determination, in particular to a photo-irradiation reactor. Background Art

[0002] Many materials have thermal catalytic effects and are widely used in organic synthesis, pollutant degradation and clean energy production. People have also found that these reactions can also occur under light excitation. Photocatalytic reactions have the advantages of mild reaction conditions, low secondary pollution, low operating costs, and the use of sunlight as a reaction light source. The photothermal effect caused by light will increase the temperature of the material, which also helps to increase the rate of the catalytic reaction. In recent years, the catalytic effect of materials under the combined action of light and heat has received widespread attention.

[0003] When the existing catalytic reactor performs photocatalysis on the gas, the gas remains static, and the light intensity received by different areas of the gas is inconsistent, resulting in different catalytic effects on the gas, reducing the overall catalytic efficiency and interfering with the accuracy of the experiment. Utility Model Content

[0004] In view of this, it is necessary to provide a photo-irradiation reactor to solve the problem of different catalytic effects of different gas regions.

[0005] The utility model provides a photo-irradiation reactor, comprising:

[0006] A reaction box, the reaction box comprising an inner shell and an outer shell which are nested and a luminous box cover, an interlayer space for accommodating cooling water is formed between the inner shell and the outer shell, and the box cover is covered on the inner shell and the outer shell to seal and separate the inner cavity of the inner shell and the interlayer space;

[0007] a gas delivery system, the gas delivery system being capable of inputting or outputting a reaction gas into the inner shell;

[0008] A gas circulation detection system, the gas circulation detection system includes a peristaltic pump, a three-way valve and a gas chromatograph, one end of the peristaltic pump is connected to the inner shell through a pipeline, and the other end of the peristaltic pump is connected to the gas chromatograph and the inner shell respectively through the three-way valve, so as to detect the gas substance after the reaction or drive the reaction gas to circulate.

[0009] Furthermore, the box cover includes a light-transmitting cover body and a light group, wherein the light group is mounted on the cover body, and the light group can irradiate ultraviolet light into the inner shell through the cover body.

[0010] Furthermore, the cover body is inserted into the opening of the outer shell, and the opening of the inner shell abuts against the cover body to seal and separate the inner cavity and the interlayer space of the inner shell.

[0011] Furthermore, a sealing groove is provided on the cover body, and the opening of the inner shell body is inserted into the sealing groove.

[0012] Furthermore, the bottom of the inner shell is spaced apart from the outer shell, and the opening of the inner shell is relatively protruded from the outer shell.

[0013] Furthermore, the gas circulation detection system also includes two gas supply connectors, which are respectively arranged on both sides of the outer shell, and the gas supply connectors are connected to the inner cavity of the inner shell through the outer shell and the inner shell. One of the gas supply connectors is connected to the peristaltic pump through a pipeline, and the other gas supply connector is connected to an interface of the three-way valve through a pipeline.

[0014] Furthermore, the gas delivery system includes an air inlet connector, an air outlet connector and a shut-off valve. The air inlet connector and the air outlet connector are connected to the inner cavity of the inner shell through the outer shell and the inner shell. The air inlet connector is connected to a gas tank storing reaction gas through a pipeline, and the air outlet connector is connected to an exhaust gas treatment center through a pipeline. The two shut-off valves are respectively arranged on the air inlet connector and the air outlet connector to control the gas exchange in the inner cavity of the inner shell.

[0015] Furthermore, it also includes a water circulation system, which includes a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively arranged on both sides of the outer shell, and the water inlet pipe and the water outlet pipe are connected with the interlayer space through the outer shell, the water inlet pipe can inject cooling water into the interlayer space, and the water outlet pipe can output the heated cooling water to the outside.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) A photo-irradiation reactor of the utility model is provided with a reaction box, which includes an inner shell and an outer shell that are nested and a luminous box cover, and a sandwich space for accommodating cooling water is formed between the inner shell and the outer shell. The cooling water in the sandwich space can absorb the heat during the photocatalytic reaction, ensuring that the photocatalytic reaction always maintains a suitable reaction temperature. The box cover is fitted on the inner shell and the outer shell, and the box cover can seal the openings of the inner shell and the outer shell, thereby separating the inner cavity of the inner shell and the sandwich space, creating a relatively independent reaction space for the gas to be reacted stored in the inner shell, and preventing external cooling water from entering the inner cavity of the inner shell.

[0018] (2) A photoreactor of the utility model is provided with a gas circulation detection system, which includes a peristaltic pump, a three-way valve and a gas chromatograph. One end of the peristaltic pump is connected to the inner shell through a pipeline, and the other end of the peristaltic pump is connected to the gas chromatograph and the inner shell respectively through the three-way valve. The three-way valve can be automatically switched so that the peristaltic pump is connected to the gas chromatograph and the inner shell respectively. When the peristaltic pump is connected to the inner shell, the peristaltic pump can drive the gas located on one side of the inner shell to pass through the peristaltic pump and then be output from the other side of the inner shell, thereby achieving relative stirring and mixing of the reaction gas, relative diffusion, promoting uniform reaction of the gas at different positions, and improving the reaction efficiency of the photocatalytic reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the reaction box in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the box cover in the utility model.

[0023] In the figure, 100, reaction box; 110, inner shell; 120, outer shell; 130, box cover; 131, cover; 132, lamp group; 133, sealing groove; 140, interlayer space; 200, gas delivery system; 210, air inlet connector; 220, air outlet connector; 230, stop valve; 300, gas circulation detection system; 310, peristaltic pump; 320, three-way valve; 330, gas chromatograph; 340, gas delivery connector; 350, water circulation system; 351, water inlet pipe; 352, water outlet pipe. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0025] A photo-irradiation reactor in this embodiment relates to the technical field of quantitative determination of gas catalysis. By adding a gas circulation detection system 300 in the reaction container, a peristaltic pump 310 can be used to drive the relative flow of gas in the reaction container, so that the position of the gas in the container changes, thereby promoting uniform reaction of gases at different positions and improving the reaction efficiency of the photocatalytic reaction.

[0026] See also Figures 1 to 3 In this embodiment, a photoreactor includes: a reaction box 100, a gas delivery system 200 and a gas circulation system. The reaction box 100 can accommodate the gas to be reacted and provide a low-temperature environment of a water bath for the gas. The gas delivery system 200 can transport and output the reaction gas to the reaction box 100 to provide the required reactants for the photocatalytic reaction. The gas circulation detection system 300 can drive the gas in the reaction box 100 to flow, so that the position of the gas in the container changes, and is effectively diffused, thereby promoting the uniform reaction of the gas at different positions and improving the reaction efficiency of the photocatalytic reaction.

[0027] The reaction box 100 includes an inner shell 110 and an outer shell 120 which are nested and a luminous box cover 130. An interlayer space 140 for accommodating cooling water is formed between the inner shell 110 and the outer shell 120. The cooling water in the interlayer space 140 can absorb the heat during the photocatalytic reaction to ensure that the photocatalytic reaction always maintains a suitable reaction temperature. The box cover 130 covers the inner shell 110 and the outer shell 120. The box cover 130 can seal the openings of the inner shell 110 and the outer shell 120, thereby separating the inner cavity of the inner shell 110 and the interlayer space 140, creating a relatively independent reaction space for the gas to be reacted stored in the inner shell 110, and preventing the external cooling water from entering the inner cavity of the inner shell 110.

[0028] The gas delivery system 200 can input or output reaction gas into the inner shell 110 to provide the required reactants for the photocatalytic reaction.

[0029] The gas circulation detection system 300 includes a peristaltic pump 310, a three-way valve 320, and a gas chromatograph 330. One end of the peristaltic pump 310 is connected to the inner housing 110 through a pipeline, and the other end of the peristaltic pump 310 is respectively connected to the gas chromatograph 330 and the inner housing 110 through the three-way valve 320. The three-way valve 320 can be automatically switched so that the peristaltic pump 310 is respectively connected to the gas chromatograph 330 and the inner housing 110. When the peristaltic pump 310 is connected to the inner housing 110, the peristaltic pump 310 can drive the gas located on one side of the inner housing 110 to pass through the peristaltic pump 310 and then be output from the other side of the inner housing 110, so as to achieve relative stirring and mixing of the reaction gas, relative diffusion, promote uniform reaction of the gas at different positions, and improve the reaction efficiency of the photocatalytic reaction.

[0030] During use, the box cover 130 emits ultraviolet light to irradiate the inner shell 110, and the peristaltic pump 310 drives the gas in the inner shell 110 to circulate, promote gas circulation and stirring, so that the gas at different positions reacts evenly, thereby improving the reaction efficiency of the photocatalytic reaction.

[0031] It should be noted in advance that a reaction catalyst needs to be added into the inner cavity of the inner shell 110 before the reaction. The catalyst is a liquid, and the liquid is placed at the bottom of the inner shell 110 to accelerate the gas reaction.

[0032] In some embodiments, see Figure 3 The box cover 130 includes a light-transmitting cover body 131 and a lamp group 132. The cover body 131 is made of transparent glass or plastic. The lamp group 132 is arranged in the cover body 131. The lamp group 132 can irradiate ultraviolet light into the inner shell 110 through the cover body 131. The ultraviolet light combined with the catalyst can promote the gas reaction to generate organic matter.

[0033] As a further example, see Figure 2 and Figure 3 The cover 131 is inserted into the opening of the outer shell 120, and the outer contour edge of the cover 131 is consistent with the inner contour edge of the outer shell 120. The cover 131 is inserted into the outer shell 120 to block and seal the interlayer space 140 and prevent the cooling water from overflowing. The opening of the inner shell 110 abuts against the cover 131 to seal the inner cavity of the inner shell 110, creating a relatively independent reaction space for the reaction gas, and also preventing the external cooling water from entering the inner cavity of the inner shell 110.

[0034] In some embodiments, see Figure 3 The cover 131 is provided with a sealing groove 133, which is a closed ring. The opening of the inner shell 110 is inserted into the sealing groove 133, and the sealing groove 133 can further seal the inner shell 110 to prevent leakage of the internal reaction gas. As a further embodiment, a rubber sealing strip is provided in the sealing groove 133, and the rubber sealing strip can be tightly abutted against the opening of the inner shell 110, further sealing the opening of the inner shell 110 to prevent leakage of the internal reaction gas.

[0035] In the specific process, the bottom of the inner shell 110 is spaced apart from the outer shell 120, and the inner shell 110 can be completely immersed in the coolant, increasing the contact area between the inner shell 110 and the coolant. The opening of the inner shell 110 is relatively protruding from the outer shell 120, so that the opening of the inner shell 110 is inserted deeper into the sealing groove 133, and the sealing effect is better.

[0036] It should be noted that the tops of the inner shell 110 and the outer shell 120 are both open to form corresponding openings, the shape of the openings is a relatively regular square, and the cross section of the cover 131 is consistent with the cross section of the outer shell 120. In order to ensure that the inner shell 110 is fixed relative to the outer shell 120, a connector can be provided in the interlayer space 140, and the two ends of the connector are respectively fixedly connected to the inner shell 110 and the outer shell 120. The connector can be a connecting column or a connecting plate, and the size of the connector needs to be controlled to avoid an overly large connector hindering the flow of the coolant in the interlayer space 140.

[0037] In some embodiments, see Figure 1 The gas circulation detection system 300 further includes two gas supply connectors 340, which are respectively arranged on both sides of the outer shell 120. The gas supply connectors 340 pass through the outer shell 120 and the inner shell 110 to communicate with the inner cavity of the inner shell 110. The outer edges of the gas supply connectors 340 are fixedly connected to the outer shell 120 and the inner shell 110 and maintain a relative seal. One gas supply connector 340 is connected to the peristaltic pump 310 through a pipeline, and the other gas supply connector 340 is connected to an interface of the three-way valve 320 through a pipeline.

[0038] During use, when the three-way valve 320 is switched to the two ends of the peristaltic pump 310 are respectively connected to the two gas connectors 340, the peristaltic pump 310 can drive the gas located on one side of the inner shell 110 to pass through the peristaltic pump 310 and then be output from the other side of the inner shell 110, thereby achieving relative stirring and mixing of the reaction gas and promoting uniform reaction of the gas at different positions. When the three-way valve 320 is switched to the two ends of the peristaltic pump 310 are respectively connected to the gas connector 340 and the gas chromatograph 330, the peristaltic pump 310 can uniformly drive the gas mixture after the reaction into the gas chromatograph 330 to detect the reaction product, thereby obtaining the degree of reaction and conversion rate, and then evaluating the catalyst.

[0039] In a specific implementation process, the three-way valve 320 is a two-position three-way solenoid valve, which can connect two different air flow paths as needed.

[0040] It should be noted that the two gas connectors 340 are staggered along the direction of light, one gas connector 340 is located at the lower part of the inner shell 110, and the other gas connector 340 is located at the upper part of the inner shell 110. The peristaltic pump 310 can drive the gas located in the lower layer of the inner shell 110 to move to the upper layer of the inner shell 110, thereby obtaining stronger ultraviolet irradiation and promoting uniform reaction of gases in different layers.

[0041] In some embodiments, see Figure 1The gas delivery system 200 includes an inlet connector 210, an outlet connector 220 and a stop valve 230. The inlet connector 210 and the outlet connector 220 are connected to the inner cavity of the inner shell 110 through the outer shell 120 and the inner shell 110. The outer edges of the inlet connector 210 and the outlet connector 220 are fixedly connected to the outer shell 120 and the inner shell 110 and remain relatively sealed. The inlet connector 210 is connected to a gas tank storing a reaction gas through a pipeline, and the gas tank can provide a continuous supply of gas to be reacted for the inlet connector 210. The outlet connector 220 is connected to an exhaust gas treatment center through a pipeline, and the exhaust gas treatment center can process degradation reaction products and unreacted substances to reduce pollution. The two stop valves 230 are respectively arranged on the air inlet connector 210 and the air outlet connector 220. After the inner shell 110 is filled with the gas to be reacted, the stop valve 230 is needed to simultaneously cut off the connection between the air inlet connector 210 and the air outlet connector 220 and the outside world to ensure that the gas volume and mass fraction in the inner cavity of the inner shell 110 remain unchanged, so that the reaction progress can be quantitatively detected by the gas chromatograph 330.

[0042] In some embodiments, see Figure 1 , a photoreactor of the present application also includes a water circulation system 350, the water circulation system 350 includes a water inlet pipe 351 and a water outlet pipe 352, the water inlet pipe 351 and the water outlet pipe 352 are respectively arranged on both sides of the outer shell 120, the water inlet pipe 351 and the water outlet pipe 352 pass through the outer shell 120 and communicate with the interlayer space 140, and the outer edges of the water inlet pipe 351 and the water outlet pipe 352 are fixedly connected to the outer shell 120 and remain relatively sealed. The water inlet pipe 351 can inject cooling water into the interlayer space 140, and the water outlet pipe 352 can output the heated cooling water to the outside. In the specific implementation process, the water inlet pipe 351 is connected to the faucet, and cooling water is continuously input into the interlayer space 140, and the water outlet pipe 352 discharges the cooling water to the outside.

[0043] Workflow: First, install the box cover 130 on the box body to ensure that the interlayer space 140 and the inner cavity of the inner shell 110 remain relatively sealed. Then, start the three-way valve 320 so that the two ends of the peristaltic pump 310 are connected to the two gas supply connectors 340 respectively, turn on the peristaltic pump 310, and the gas in the inner shell 110 begins to circulate. Next, fill the interlayer space 140 with cooling water through the water inlet pipe 351 and the water outlet pipe 352. At the same time, use the air inlet connector 210 and the air outlet connector 220 to blow carbon dioxide gas into the inner shell 110, and use the stop valve 230 to close the air inlet connector 210 and the air outlet connector 220. Then, start the lamp group 132 on the box cover 130 to irradiate ultraviolet rays to the gas in the inner shell 110. Finally, after a certain reaction time, the three-way valve 320 is switched, and the two ends of the peristaltic pump 310 are connected to the gas supply connector 340 and the gas chromatograph 330 respectively, and the peristaltic pump 310 drives the reaction product into the gas chromatograph 330 for detection.

[0044] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the present invention.

Claims

1. A photoreactor, characterized in that: include: A reaction box, the reaction box comprising an inner shell and an outer shell which are nested and a luminous box cover, an interlayer space for accommodating cooling water is formed between the inner shell and the outer shell, and the box cover is covered on the inner shell and the outer shell to seal and separate the inner cavity of the inner shell and the interlayer space; a gas delivery system, the gas delivery system being capable of inputting or outputting a reaction gas into the inner shell; A gas circulation detection system, the gas circulation detection system includes a peristaltic pump, a three-way valve and a gas chromatograph, one end of the peristaltic pump is connected to the inner shell through a pipeline, and the other end of the peristaltic pump is connected to the gas chromatograph and the inner shell respectively through the three-way valve, so as to detect the gas substance after the reaction or drive the reaction gas to circulate.

2. A photoreactor according to claim 1, characterized in that: The box cover comprises a light-transmissive cover body and a light group, wherein the light group is mounted on the cover body and can irradiate ultraviolet light into the inner shell through the cover body.

3. A photoreactor according to claim 2, characterized in that: The cover body is inserted into the opening of the outer shell, and the opening of the inner shell abuts against the cover body to seal and separate the inner cavity and the interlayer space of the inner shell.

4. A photoreactor according to claim 3, characterized in that: The cover body is provided with a sealing groove, and the opening of the inner shell body is inserted into the sealing groove.

5. A photoreactor according to claim 4, characterized in that: The bottom of the inner shell is spaced apart from the outer shell, and the opening of the inner shell is relatively protruded from the outer shell.

6. A photoreactor according to claim 1, characterized in that: The gas circulation detection system also includes two gas supply connectors, which are respectively arranged on both sides of the outer shell, and the gas supply connectors are connected to the inner cavity of the inner shell through the outer shell and the inner shell. One of the gas supply connectors is connected to the peristaltic pump through a pipeline, and the other gas supply connector is connected to an interface of the three-way valve through a pipeline.

7. A photoreactor according to claim 1, characterized in that: The gas delivery system includes an air inlet connector, an air outlet connector and a shut-off valve. The air inlet connector and the air outlet connector are connected to the inner cavity of the inner shell through the outer shell and the inner shell. The air inlet connector is connected to a gas tank storing reaction gas through a pipeline, and the air outlet connector is connected to an exhaust gas treatment center through a pipeline. The two shut-off valves are respectively arranged on the air inlet connector and the air outlet connector to control the gas exchange in the inner cavity of the inner shell.

8. A photoreactor according to claim 1, characterized in that: It also includes a water circulation system, which includes a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are respectively arranged on both sides of the outer shell. The water inlet pipe and the water outlet pipe are connected with the interlayer space through the outer shell. The water inlet pipe can inject cooling water into the interlayer space, and the water outlet pipe can output the heated cooling water to the outside.

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