Novel quartz glass photocatalytic microchannel reactor

Abstract

The utility model discloses a novel quartz glass photocatalytic microchannel reactor, and relates to the technical field of photocatalytic reactor equipment. The reactor comprises a box body, a lamp panel, an adjustable bracket, a photocatalytic reaction unit and a controller, the lamp panel, the adjustable bracket and the photocatalytic reaction unit are arranged in the box body, and the controller is respectively connected with the lamp panel and the photocatalytic reaction unit; the photocatalytic reaction unit comprises a cover plate, a quartz glass plate, a reaction plate and a heat exchange plate which are arranged from top to bottom, a reaction channel is formed in the side, close to the quartz glass plate, of the reaction plate, and a heat exchange short circuit prevention channel is formed in the side, close to the heat exchange plate, of the reaction plate. According to the utility model, the quartz glass is used for transmitting light with almost all wavelengths, so that the attenuation of light intensity is greatly reduced, the photoelectric efficiency is greatly reduced under the same working condition, the cost is saved, and the working conditions of most photocatalytic reactions can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of photocatalytic reactor equipment, in particular to a novel quartz glass photocatalytic microchannel reactor. Background Art

[0002] A photocatalytic reactor is a reactor that uses light as a catalyst within a microchannel. Photocatalysis is widely used in chemical synthesis. Currently, most microchannel reactors used for photocatalysis are made of borosilicate glass. However, borosilicate glass has poor transmittance to light with wavelengths below 300nm, resulting in suboptimal experimental structures for many photocatalytic reactions and even experimental failure. Quartz glass, on the other hand, has excellent transmittance to all wavelengths of light. However, because current quartz glass photoreactors are all tubular, they cannot achieve high mixing, mass transfer, and heat exchange capabilities in microchannel reactors. Utility Model Content

[0003] In view of the above problem that the current quartz glass photoreactors are all tubular and cannot achieve high mixed mass transfer and heat exchange functions for microchannel reactors, the utility model provides a novel quartz glass photocatalytic microchannel reactor.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A novel quartz glass photocatalytic microchannel reactor includes a housing, a lamp panel, an adjustable bracket, a photocatalytic reaction unit, and a controller. The housing has a receiving cavity, and the lamp panel, adjustable bracket, and photocatalytic reaction unit are arranged in the receiving cavity. The lamp panel provides a light source for the photocatalytic reaction unit, and the controller is connected to the lamp panel and the photocatalytic reaction unit, respectively. The photocatalytic reaction unit includes a cover plate, a quartz glass plate, a reaction plate, and a heat exchange plate. The cover plate, quartz glass plate, reaction plate, and heat exchange plate are arranged from top to bottom. A reaction channel is provided on the side of the reaction plate adjacent to the quartz glass plate, and a heat exchange anti-short-circuit channel is provided on the side adjacent to the heat exchange plate.

[0006] Furthermore, the photocatalytic reaction unit is located at the lower part of the adjustable bracket, the light board is detachably connected to the upper part of the adjustable bracket, and the light board moves relative to the photocatalytic reaction unit through the adjustable bracket.

[0007] Furthermore, sealing rings are provided between the cover plate and the quartz glass plate, and between the quartz glass plate and the reaction plate, and are fixedly connected by bolts.

[0008] Furthermore, the reaction channel has several bends, each bend having a mixing unit group formed by connecting several heart-shaped mixing units, and a pressure balancing unit is provided between adjacent mixing unit groups. A feed unit is provided at one end of the reaction channel, and a discharge port is provided at the other end.

[0009] Furthermore, the mixing unit has a first stopper in it, and the sidewall of the first stopper and the sidewall of the mixing unit are both uneven.

[0010] Furthermore, the pressure balancing unit is adjacent to the inlet end of the mixing unit group, and a plurality of second blocks are provided in each of the pressure balancing units along the material flow direction, and the side walls of the second blocks are uneven.

[0011] Furthermore, the feeding unit is connected with a first feeding port and a second feeding port, and a third stopper approximately in a U shape is provided in the cavity of the feeding unit.

[0012] Furthermore, the reaction channel includes a first reaction channel and a second reaction channel, a hollow cylindrical temperature measuring port is provided between the first reaction channel and the second reaction channel, and the temperature transmitter is inserted into the temperature measuring port along the material flow direction through a temperature measuring probe.

[0013] Furthermore, the heat exchange short-circuit prevention channel is provided with a heat exchange inlet and a heat exchange outlet. A display screen, a buzzer, several knobs, and several indicator lights are provided on one side of the box. The controller is respectively connected to the display screen, buzzer, feed pump, temperature transmitter, several knobs, and several indicator lights. The bottom of the box has several moving wheels.

[0014] Furthermore, the reaction plate is made of metal or plastic. The light board has a plurality of LED lamp beads, each of which has a different wavelength, and the wavelength is at least 260nm.

[0015] The beneficial effects of the present invention are as follows: the present invention uses a quartz glass plate to transmit light of almost all wavelengths, significantly reducing the attenuation of light intensity, and significantly reducing the photoelectric efficiency under the same working conditions, saving costs while also meeting the working conditions of most photocatalytic reactions. In the present invention, the controller is connected to the light board and the temperature transmitter respectively, and can display parameters such as light intensity and temperature through the display screen, and can be adjusted using the buttons on the display screen. At the same time, it cooperates with the TCU temperature control system to accurately control the reaction temperature. The controller also cooperates with the feed pump to realize functions such as one-button start and stop, flow ratio, and automatic flow reduction in case of over-temperature. The various functions can be linked to each other, and process experimental data can be obtained quickly and conveniently while ensuring safe experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the structural principle of an embodiment of the present utility model.

[0017] Figure 2 Figure 2 is a schematic structural diagram of the photocatalytic reaction unit.

[0018] Figure 3 Shown Figure 2 Top view of .

[0019] Figure 4 Shown Figure 3 A partial enlarged view of point A in the middle.

[0020] Explanation of the accompanying drawings: 1. Box body; 2. Lamp board; 3. Adjustable bracket; 4. Photocatalytic reaction unit; 5. Display screen; 6. Knob; 7. Indicator light; 8. Buzzer; 9. Moving wheel; 10. Cover plate; 11. Quartz glass plate; 12. Reaction plate; 13. Heat exchange plate; 14. Reaction channel; 15. Heat exchange anti-short-circuit channel; 16. First feed port; 17. Second feed port; 18. Temperature measuring port; 19. Heat exchange inlet; 20. Heat exchange outlet; 21. Temperature measuring port; 22. Mixing unit; 23. First stopper; 24. Pressure balance unit; 25. Second stopper; 26. Feed unit; 27. Third stopper. DETAILED DESCRIPTION

[0021] The utility model discloses a novel quartz glass photocatalytic microchannel reactor. An implementation manner of the utility model is described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the quartz glass photocatalytic microchannel reactor comprises a housing 1, a lamp panel 2, an adjustable bracket 3, a photocatalytic reaction unit 4, and a controller. The housing 1 has a handle on the top and a storage chamber on the left side. The lamp panel 2, adjustable bracket 3, and photocatalytic reaction unit 4 are housed within the chamber. The photocatalytic reaction unit 4 is fixed to the bottom of the adjustable bracket 3, and the lamp panel 2 is detachably connected to the top of the adjustable bracket 3. The adjustable bracket 3 allows the lamp panel 2 to move relative to the photocatalytic reaction unit 4, allowing adjustment of the distance between the lamp panel 2 and the photocatalytic reaction unit 4. The lamp panel 2 contains several UV series LEDs, each with a different wavelength, including wavelengths ranging from 260nm to 270nm, 270nm to 280nm, 280nm to 290nm, 290nm to 300nm, and wavelengths above 300nm. During experiments, the power of the lamp panel 2 can be adjusted within a range of tens of kilowatts, enhancing user convenience in actual process requirements and operation.

[0023] Combine Figure 2 and Figure 3As shown, the photocatalytic reaction unit 4 comprises a cover plate 10, a quartz glass plate 11, a reaction plate 12, and a heat exchange plate 13. These are arranged from top to bottom. Sealing rings are provided between the cover plate 10 and the quartz glass plate 11, and between the quartz glass plate 11 and the reaction plate 12. The cover plate 10, quartz glass plate 11, and reaction plate 12 are securely connected by bolts. The quartz glass plate 11 is highly transparent, allowing it to transmit light of almost all wavelengths while significantly reducing light intensity attenuation. This significantly reduces photoelectric power under the same operating conditions, saving costs. The quartz glass plate 11 is made of varying thicknesses to accommodate different pressures, with a maximum pressure resistance of 1.8 MPa, meeting most photocatalytic reaction conditions. The reaction plate 12 is made of metal or a special plastic. The upper reaction surface of the reaction plate 12 is adjacent to the quartz glass plate 11, while the lower heat exchange surface is adjacent to the heat exchange plate 13. The reaction surface is provided with a micron-scale reaction channel 14, and the heat exchange surface is provided with a millimeter-scale heat exchange anti-short-circuit channel 15.

[0024] like Figure 4 As shown, the reaction channel 14 has several bends, and each bend has a mixing unit 22 group formed by connecting several mixing units 22 that are approximately heart-shaped, and a pressure balance unit 24 is provided between adjacent mixing unit 22 groups. A feed unit 26 is provided at one end of the reaction channel 14, and a discharge port 18 is provided at the other end. A third stopper 27 that is approximately U-shaped is provided in the cavity of the feed unit 26, and the opening of the third stopper 27 faces the direction of material flow. The feed unit 26 is connected to the first feed port 16 and the second feed port 17, and the second feed port 17 is connected to the opening of the third stopper 27. A first stopper 23 that is approximately triangular is provided in the middle of the cavity of the mixing unit 22, and the side walls of the first stopper 23 and the side walls of the mixing unit 22 are both uneven, so that the materials can be fully mixed. The pressure balance unit 24 is approximately rectangular in shape. Several second blocks 25 are positioned within the unit along the material flow direction. The sidewalls of each second block 25 have an uneven surface. The reaction channel 14 has a first feed port 16, a second feed port 17, and a discharge port 18. Both the first and second feed ports 16, 17 are connected to a feed pump. The heat exchange short-circuit prevention channel 15 has a temperature measuring port 21, a heat exchange inlet 19, and a heat exchange outlet 20. The temperature measuring port 21 is equipped with a temperature transmitter probe.

[0025] Under the action of the feed pump, the first feed port 16 and the second feed port 17 are used to introduce different materials into the reaction channel 14 in a front-to-back order, and the first material is first introduced using the first feed port 16, and then the second material is introduced using the second feed port 17. The mixing unit 22 group can prevent the material from having a backflow problem after different feed pressures, and the feed unit 26 can make the first material and the second material wrapped, which is conducive to uniform mixing of heterogeneous material feed. The first stopper 23 in the mixing unit 22 adopts a non-smooth transition design, and the uneven side wall is used to increase the interfacial area, so that the first material and the second material can have more contact mixing. The first material and the second material are collided and mixed after passing through the first stopper 23 of the first mixing unit 22, and then collided and mixed again after entering the first stopper 23 of the second mixing unit 22, which has a good mass transfer effect, especially improving the rate of heterogeneous response. A pressure balancing unit 24 is located at the entrance of each group of mixing units 22. Several approximately rectangular second blocks 25 are positioned along the material flow direction. The uneven sidewalls of each second block 25 maintain smooth material flow and prevent short-circuiting caused by excessive flow. The reaction channel comprises a first reaction channel and a second reaction channel. These channels are connected at the back by a hollow cylindrical temperature measuring port 21. The sidewalls of the temperature measuring port 21 have a gap for material flow. A temperature transmitter is inserted into the temperature measuring port along the material flow direction via a temperature measuring probe, ensuring full contact between the probe and the material, and guaranteeing the accuracy of the temperature measurement results.

[0026] A TCU temperature control system is provided on the right side of the box 1. The TCU temperature control system is connected to the temperature transmitter via a controller for precise control of the reaction temperature. A display screen 5, a mute knob, a reset knob, a power indicator light, an equipment fault indicator light, an over-temperature alarm indicator light, and a buzzer 8 are provided on the right outer wall of the box 1. The controller is connected to the feed pump, the display screen 5, the mute knob, the reset knob, the power indicator light, the equipment fault indicator light, the over-temperature alarm indicator light, and the buzzer 8, respectively. Several movable wheels 9 are connected to the bottom of the box 1 for easy movement. The display screen 5 can adjust the intensity of the light board 2, display the temperature parameters detected by the temperature probe, and realize the over-temperature alarm function. The controller cooperates with the TCU temperature control system and can make judgments based on the temperature detected by the temperature probe of the temperature transmitter to realize functions such as one-button start and stop, flow ratio, and automatic flow reduction in case of over-temperature. Under the premise of ensuring safe experiments, process test data can be obtained conveniently and quickly.

[0027] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A novel quartz glass photocatalytic microchannel reactor, characterized by: The invention comprises a housing (1), a lamp panel (2), an adjustable bracket (3), a photocatalytic reaction unit (4) and a controller, wherein the housing (1) has a housing cavity, the lamp panel (2), the adjustable bracket (3) and the photocatalytic reaction unit (4) are arranged in the housing cavity, the lamp panel (2) provides a light source for the photocatalytic reaction unit (4), and the controller is connected to the lamp panel (2) and the photocatalytic reaction unit (4) respectively; the photocatalytic reaction unit (4) comprises a cover plate (10), a quartz glass plate (11), a reaction plate (12) and a heat exchange plate (13), wherein the cover plate (10), the quartz glass plate (11), the reaction plate (12) and the heat exchange plate (13) are arranged from top to bottom, a reaction channel (14) is provided on the side of the reaction plate (12) adjacent to the quartz glass plate (11), and a heat exchange anti-short-circuit channel (15) is provided on the side adjacent to the heat exchange plate (13).

2. The novel quartz glass photocatalytic microchannel reactor according to claim 1, characterized in that: The photocatalytic reaction unit (4) is located at the lower part of the adjustable bracket (3), the light board (2) is detachably connected to the upper part of the adjustable bracket (3), and the light board (2) moves relative to the photocatalytic reaction unit (4) through the adjustable bracket (3).

3. The novel quartz glass photocatalytic microchannel reactor according to claim 1, characterized in that: Sealing rings are provided between the cover plate (10) and the quartz glass plate (11), and between the quartz glass plate (11) and the reaction plate (12), and are fixedly connected by bolts.

4. The novel quartz glass photocatalytic microchannel reactor according to claim 1, characterized in that: The reaction channel (14) has a plurality of bends, each bend has a mixing unit (22) group formed by connecting a plurality of heart-shaped mixing units (22), and a pressure balancing unit (24) is provided between adjacent mixing unit (22) groups; One end of the reaction channel (14) is provided with a feeding unit (26), and the other end is provided with a discharge port (18).

5. The novel quartz glass photocatalytic microchannel reactor according to claim 4, characterized in that: A first stopper (23) is provided in the mixing unit (22), and the side wall of the first stopper (23) and the side wall of the mixing unit (22) are both uneven.

6. The novel quartz glass photocatalytic microchannel reactor according to claim 4, characterized in that: The pressure balancing unit (24) is adjacent to the inlet end of the mixing unit (22) group. A plurality of second blocks (25) are arranged in each pressure balancing unit (24) along the material flow direction. The side walls of the second blocks (25) are uneven.

7. The novel quartz glass photocatalytic microchannel reactor according to claim 4, characterized in that: The feeding unit (26) is connected to the first feeding port (16) and the second feeding port (17), and a third stopper (27) which is approximately U-shaped is provided in the cavity of the feeding unit (26).

8. The novel quartz glass photocatalytic microchannel reactor according to claim 1, characterized in that: The reaction channel (14) comprises a first reaction channel and a second reaction channel, a hollow cylindrical temperature measuring port is provided between the first reaction channel and the second reaction channel, and a temperature transmitter is inserted into the temperature measuring port along the material flow direction through a temperature measuring probe.

9. The novel quartz glass photocatalytic microchannel reactor according to claim 8, characterized in that: The heat exchange anti-short circuit channel (15) is provided with a heat exchange inlet (19) and a heat exchange outlet (20); A display screen (5), a buzzer (8), a plurality of knobs (6) and a plurality of indicator lights (7) are provided on one side of the box body (1); the controller is respectively connected to the display screen (5), the buzzer (8), the feed pump, the temperature transmitter, the plurality of knobs (6) and the plurality of indicator lights (7); and a plurality of moving wheels (9) are provided at the bottom of the box body (1).

10. The novel quartz glass photocatalytic microchannel reactor according to claim 1, characterized in that: The reaction plate (12) is made of metal or plastic; The light board (2) has a plurality of LED lamp beads, each of which has a different wavelength, and the wavelength is at least 260nm.

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