Piezoelectric catalysis device
By adopting a parallel ultrasonic transducer and an intelligent control system in the piezoelectric catalytic device, the problem of insufficient acoustic energy of the piezoelectric crystal catalyst is solved, and the efficient progress of the catalytic reaction is achieved.
Patent Information
- Application Number
- CN202422345619.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the existing piezoelectric catalytic devices, the acoustic energy obtained by the piezoelectric crystal catalyst is insufficient, resulting in poor catalytic effect and affecting the reaction efficiency of the reaction liquid.
A piezoelectric catalytic device is designed, using upper and lower ultrasonic transducers in parallel to provide double acoustic energy, and intelligent control is achieved through the controller and the temperature measuring part to improve the efficiency of the catalytic reaction.
Through the provision of double acoustic energy and intelligent control, the charge transfer and molecular activation process of catalytic reactions are significantly improved, and the catalytic performance is improved.
Smart Images
Figure CN223082766U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of piezocatalysis, and particularly relates to a piezocatalytic device. Background Art
[0002] The piezoelectric effect refers to the phenomenon that when a piezoelectric material deforms under an external force, charge accumulation appears on its two end surfaces. There are various types of piezoelectric materials, including piezoelectric crystals, piezoelectric ceramics, organic piezoelectric materials, etc. Piezocatalysis utilizes the potential difference generated by the mechanical deformation of piezoelectric materials, usually called "piezoelectric potential", which can drive chemical reactions. When a piezoelectric material is subjected to mechanical stress, internal deformation occurs and an internal electric field is formed, which can effectively promote the separation of electrons and holes, thereby improving the catalytic efficiency. A piezoelectric crystal catalyst is a material that uses the potential difference generated by the piezoelectric effect to initiate various electrochemical oxidation-reduction reactions. By adjusting the polarization degree of the piezoelectric crystal catalyst through vibration (such as ultrasonic waves, mechanical stirring, or water waves), the adsorption and desorption of surface space charges are realized. When in use, the piezoelectric crystal catalyst is placed in the reaction solution, and the piezoelectric crystal catalyst obtains mechanical energy for catalytic reactions. Ultrasonic is the most widely used mechanical force in piezocatalysis. In the existing piezocatalytic devices using ultrasonic, the acoustic energy obtained by the piezocatalytic crystal is less, which limits the performance of the catalyst, affects the catalytic effect of the piezocatalytic crystal, results in a low reaction efficiency of the reaction solution, and affects the experimental progress. Summary of the Utility Model
[0003] Aiming at the problems existing in the prior art, the utility model provides a piezocatalytic device, which provides double acoustic energy for the piezoelectric crystal catalyst, improves the catalytic effect of the piezoelectric crystal catalyst, and promotes the reaction.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A piezocatalytic device includes a reactor for accommodating a reaction solution to be catalyzed. A cover plate is provided at the top of the reactor to cover the opening of the reactor. Inside the reactor, there are multiple first support members for placing the piezoelectric crystal catalyst and multiple second support members for supporting the cover plate. The first support members are arranged below the second support members. An upper ultrasonic transducer is fixed on the cover plate, and a lower ultrasonic transducer is fixed below the reactor. Both the upper ultrasonic transducer and the lower ultrasonic transducer are electrically connected to an ultrasonic generator. A temperature measuring member is fixed inside the reactor, and the temperature measuring member is connected to the information input end of a controller. The ultrasonic generator is connected to the information output end of the controller.
[0006] Furthermore, the reactor is a cylindrical container with a closed bottom and an open top. The reactor is provided with a reaction liquid inlet and a reaction liquid outlet. The reaction liquid outlet is arranged on the opposite side of the reaction liquid inlet. Preferably, the reaction liquid inlet and the reaction liquid outlet are arranged at different heights. More preferably, the reaction liquid inlet is arranged near the open top, and the reaction liquid outlet is arranged near the bottom of the reactor. The reaction liquid inlet is connected to the reaction liquid input pipeline, and the reaction liquid outlet is connected to the reaction liquid output pipeline. A stop valve is provided at a position near the reaction liquid outlet on the reaction liquid output pipeline, and a liquid pump is provided on the reaction liquid input pipeline for pumping the reaction liquid into the reactor.
[0007] Furthermore, a plurality of first support members are dispersedly arranged inside the reactor at the same height. Preferably, the plurality of first support members are evenly distributed around the circumference of the reactor, and the central angles formed between adjacent first support members are equal. There are at least 2 first support members, and preferably, for example, there can be 3 or 4 first support members.
[0008] Furthermore, the cross-section of the first support member is in an inverted T shape. The first support member includes a first arc-shaped horizontal plate connected to the inner wall of the reactor and an arc-shaped vertical plate fixed on the first arc-shaped horizontal plate. The first arc-shaped horizontal plate is parallel to the bottom wall of the reactor. The radian of the first arc-shaped horizontal plate can be, for example, π / 6 - π / 3. The arc-shaped vertical plate is perpendicular to the first arc-shaped horizontal plate. The diameter of the circle where the arc-shaped vertical plate is located is slightly smaller than the inner diameter of the reactor, for example, 2 - 4 mm smaller. The distance between the first arc-shaped horizontal plate and the bottom wall of the reactor is half of the height of the reactor. The piezoelectric crystal catalyst is placed on the first arc-shaped horizontal plate inside the arc-shaped vertical plate, and the plurality of first arc-shaped horizontal plates form a stable support for the piezoelectric crystal catalyst.
[0009] Furthermore, the piezoelectric crystal catalyst is preferably a circular thin plate. The diameter of the piezoelectric crystal catalyst is preferably smaller than the diameter of the circle where the arc-shaped vertical plate is located and larger than the diameter of the inner arc of the first arc-shaped horizontal plate. Under the action of ultrasonic waves, the piezoelectric crystal catalyst is stationary or sways on the first arc-shaped horizontal plate. The first arc-shaped horizontal plate prevents the piezoelectric crystal catalyst from falling, and at the same time, there is room for movement, and more reaction liquid can be contacted while swaying. The arc-shaped vertical plate prevents the piezoelectric crystal catalyst from colliding with the inner wall of the reactor. The piezoelectric crystal catalyst is made of materials with a high piezoelectric coefficient, including but not limited to lithium niobate, lithium tantalate, barium titanate, etc., and has extremely high mechanical stability and durability.
[0010] Furthermore, a plurality of second support members are dispersedly arranged above the first support members at the same height. The plurality of second support members are evenly distributed around the circumference of the reactor. Preferably, the second support members and the first support members are arranged in a crosswise and staggered manner. The distance between the second support members and the open top of the reactor is equal to the thickness of the cover plate, so that the distance between the piezoelectric crystal catalyst placed on the first support member and the cover plate is equal to the distance between the piezoelectric crystal catalyst and the bottom wall of the reactor.
[0011] Further, the second support member is a second arc-shaped horizontal plate that protrudes radially inward along the reactor, and the second arc-shaped horizontal plate is parallel to the first arc-shaped horizontal plate. The radian of the second arc-shaped horizontal plate can be, for example, π / 6 - π / 3. The distance that the second arc-shaped horizontal plate protrudes into the reactor is less than the distance between the arc-shaped vertical plate and the inner wall of the reactor, so that the piezoelectric crystal catalyst can be taken out smoothly and replaced in time.
[0012] Further, the thickness of the cover plate is the same as the wall thickness of the reactor. The diameter of the cover plate is less than the inner diameter of the reactor and greater than the diameter of the circle where the inner arc of the second arc-shaped horizontal plate is located.
[0013] Further, the upper ultrasonic transducer is fixed at the center of the cover plate, and the lower ultrasonic transducer is fixed on the outer surface of the bottom wall of the reactor. The connection methods of the upper ultrasonic transducer with the cover plate and the lower ultrasonic transducer with the bottom wall of the reactor can be, for example, bonded by strong glue. The positions of the upper transducer and the lower transducer correspond to each other. The upper ultrasonic transducer and the lower ultrasonic transducer are arranged in parallel, receiving the same electrical signal output from the ultrasonic generator. Since the distance between the piezoelectric crystal catalyst placed on the first support member and the cover plate is equal to the distance between the piezoelectric crystal catalyst and the bottom wall of the reactor, the upper ultrasonic transducer and the lower ultrasonic transducer simultaneously emit high-frequency vibration waves to the piezoelectric crystal catalyst. The piezoelectric crystal catalyst receives double acoustic energy, generates a strong piezoelectric effect, accelerates the charge transfer and molecular activation processes in the catalytic reaction, and improves the catalytic performance.
[0014] Further, the temperature measuring element is a temperature sensor, and the temperature measuring element is fixed on the inner wall of the reactor, used to monitor the temperature of the reaction liquid in real time and transmit the temperature information to the controller in real time.
[0015] Further, the controller is a programmable logic controller, having storage, analysis, and calculation functions. It can be, for example, a PLC or a DCS. The controller receives the temperature information from the temperature measuring element, and after analysis and calculation, outputs a control signal to the ultrasonic generator to adjust the ultrasonic parameters. The ultrasonic parameters include, for example, the frequency, power, action time, etc. of the sound wave. The ultrasonic generator generates an electrical signal and transmits it to the upper ultrasonic transducer and the lower ultrasonic transducer. The upper ultrasonic transducer and the lower ultrasonic transducer convert the electrical signal into ultrasonic waves and transmit them to the piezoelectric crystal catalyst through the bottom wall and the cover plate of the reactor, realizing precise control of the catalytic reaction conditions. In specific applications, for example, when the temperature measuring element monitors that the temperature in the reactor is lower than the preset temperature threshold, it is determined that the reaction is slower. The controller outputs information to increase the frequency or power. The ultrasonic generator receives the control signal and increases the frequency or power. The upper ultrasonic transducer and the lower ultrasonic transducer transmit more acoustic energy to the piezoelectric crystal catalyst, improving the piezoelectric effect of the piezoelectric crystal catalyst and promoting the reaction. The ultrasonic generator, the controller, and the ultrasonic transducer are all devices well-known to those skilled in the art.
[0016] Furthermore, multiple support columns are provided below the reactor. The support columns are used to support the reactor. There are at least three support columns, preferably four. The multiple support columns are evenly distributed below the reactor, and the height of the support columns is greater than the height of the lower transducer.
[0017] Advantages of the utility model:
[0018] A piezoelectric catalysis device provided by the utility model accommodates a reaction liquid to be catalyzed through a reactor. The distance between the first arc-shaped horizontal plate and the bottom wall of the reactor is half of the height of the reactor. The distance between the second support and the top opening of the reactor is equal to the thickness of the cover plate. The distance between the piezoelectric crystal catalyst placed on the first support and the cover plate is equal to the distance between the piezoelectric crystal catalyst and the bottom wall of the reactor. The upper ultrasonic transducer and the lower ultrasonic transducer are connected in parallel and receive the same electrical signal output from the ultrasonic generator. The upper ultrasonic transducer and the lower ultrasonic transducer simultaneously emit high-frequency vibration waves to the piezoelectric crystal catalyst. The piezoelectric crystal catalyst receives double acoustic energy, generates a strong piezoelectric effect, accelerates the charge transfer and molecular activation processes in the catalytic reaction, and improves the catalytic performance. Through the provided controller and temperature measuring element, intelligent control of the catalytic process is achieved. The distance that the second arc-shaped horizontal plate protrudes into the reactor is less than the distance between the arc-shaped vertical plate and the inner wall of the reactor, so that the piezoelectric crystal catalyst can be taken out smoothly and replaced in time. Description of the drawings
[0019] Figure 1 It is a schematic structural diagram of a piezoelectric catalysis device of the utility model.
[0020] Figure 2 It is a schematic structural diagram of the reactor.
[0021] Figure 3 It is a schematic diagram of the cover plate covering the reactor.
[0022] Figure 4 For Figure 3 top view.
[0023] Figure 5 For Figure 3 sectional perspective view.
[0024] Figure 6 It is a schematic structural diagram of the first support.
[0025] Reference numerals:
[0026] 1 - Reactor, 101 - Reaction liquid inlet, 102 - Reaction liquid outlet, 103 - Bottom wall, 2 - Cover plate, 3 - Piezoelectric crystal catalyst, 4 - First support, 401 - First arc-shaped horizontal plate, 402 - Arc-shaped vertical plate, 5 - Second support, 6 - Upper ultrasonic transducer, 7 - Lower ultrasonic transducer, 8 - Ultrasonic generator, 9 - Temperature measuring element, 10 - Support column. Detailed implementation mode
[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.
[0030] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.
[0031] Such as Figures 1-6As shown in the figure, a piezoelectric catalytic device provided by the present utility model includes a reactor 1 for accommodating a reaction liquid to be catalyzed. A cover plate 2 for covering the opening of the reactor 1 is provided at the top of the reactor 1. Inside the reactor 1, there are multiple first support members 4 for placing piezoelectric crystal catalysts 3 and multiple second support members 5 for supporting the cover plate 2. The first support members 4 are arranged below the second support members 5. An upper ultrasonic transducer 6 is fixed on the cover plate 2, and a lower ultrasonic transducer 7 is fixed below the reactor 1. Both the upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 are electrically connected to an ultrasonic generator 8. A temperature measuring element 9 is fixed inside the reactor 1, and the temperature measuring element 9 is connected to the information input end of the controller. The ultrasonic generator 8 is connected to the information output end of the controller.
[0032] The reactor 1 is a cylindrical container with a closed bottom and an open top. The reactor 1 is provided with a reaction liquid inlet 101 and a reaction liquid outlet 102. The reaction liquid outlet 102 is arranged on the opposite side of the reaction liquid inlet 101. Preferably, the reaction liquid inlet 101 and the reaction liquid outlet 102 are arranged at different heights. More preferably, the reaction liquid inlet 101 is arranged near the top opening, and the reaction liquid outlet 102 is arranged near the bottom of the reactor 1. The reaction liquid inlet 101 is connected to a reaction liquid input pipeline, and the reaction liquid outlet 102 is connected to a reaction liquid output pipeline. A stop valve is provided at a position near the reaction liquid outlet 102 on the reaction liquid output pipeline, and a liquid pump is provided on the reaction liquid input pipeline for inputting the reaction liquid into the reactor 1.
[0033] The multiple first support members 4 are dispersedly arranged inside the reactor 1 at the same height. Preferably, the multiple first support members 4 are evenly distributed around the circumference of the reactor 1, and the central angles formed between adjacent first support members 4 are equal. The number of first support members 4 is at least 2, and preferably, for example, it can be 3 or 4.
[0034] The cross-section of the first support member 4 is in an inverted T shape. The first support member 4 includes a first arc-shaped horizontal plate 401 connected to the inner wall of the reactor 1 and an arc-shaped vertical plate 402 fixed on the first arc-shaped horizontal plate 401. The first arc-shaped horizontal plate 401 is parallel to the bottom wall 103 of the reactor 1. The radian of the first arc-shaped horizontal plate 401 can be, for example, π / 6 - π / 3. The arc-shaped vertical plate 402 is perpendicular to the first arc-shaped horizontal plate 401. The diameter of the circle where the arc-shaped vertical plate 402 is located is slightly smaller than the inner diameter of the reactor 1, for example, 2 - 4 mm smaller. The distance between the first arc-shaped horizontal plate 401 and the bottom wall 103 of the reactor 1 is half of the height of the reactor 1. The piezoelectric crystal catalyst 3 is placed on the first arc-shaped horizontal plate 401 inside the arc-shaped vertical plate 402, and the multiple first arc-shaped horizontal plates 401 form a stable support for the piezoelectric crystal catalyst 3.
[0035] The piezoelectric crystal catalyst 3 is preferably a circular thin plate. The diameter of the piezoelectric crystal catalyst 3 is preferably smaller than the diameter of the circle where the arc-shaped vertical plate 402 is located and larger than the diameter of the inner arc of the first arc-shaped horizontal plate 401. Under the action of ultrasonic waves, the piezoelectric crystal catalyst 3 is stationary or sways on the first arc-shaped horizontal plate 401. The first arc-shaped horizontal plate 401 prevents the piezoelectric crystal catalyst 3 from falling while providing room for movement, so that more reaction liquid can be contacted during swaying (the height of the reaction liquid is preferably the same as the height of the second support). The arc-shaped vertical plate 402 prevents the piezoelectric crystal catalyst 3 from colliding with the inner wall of the reactor 1. The piezoelectric crystal catalyst 3 is made of materials with a high piezoelectric coefficient, including but not limited to lithium niobate, lithium tantalate, barium titanate, etc., and has extremely high mechanical stability and durability.
[0036] A plurality of second supports 5 are dispersedly arranged above the first support 4 at the same height. The plurality of second supports 5 are evenly distributed around the circumference of the reactor 1. There are at least 2 second supports 5, preferably 3. Preferably, the second supports 5 and the first support 4 are arranged in a criss-cross pattern. The distance between the second support 5 and the top opening of the reactor 1 is equal to the thickness of the cover plate 2, so that the distance between the piezoelectric crystal catalyst 3 placed on the first support 4 and the cover plate 2 is equal to the distance between the piezoelectric crystal catalyst 3 and the bottom wall 103 of the reactor 1.
[0037] The second support 5 is a second arc-shaped horizontal plate protruding radially inward along the reactor 1. The second arc-shaped horizontal plate is parallel to the first arc-shaped horizontal plate 401. The radian of the second arc-shaped horizontal plate can be, for example, π / 6 - π / 3. The distance that the second arc-shaped horizontal plate protrudes into the reactor 1 is smaller than the distance between the arc-shaped vertical plate 402 and the inner wall of the reactor 1, so that the piezoelectric crystal catalyst 3 can be taken out smoothly and replaced in time.
[0038] The thickness of the cover plate 2 is the same as the wall thickness of the reactor 1. The diameter of the cover plate 2 is smaller than the inner diameter of the reactor 1 and larger than the diameter of the inner arc of the second arc-shaped horizontal plate.
[0039] The upper ultrasonic transducer 6 is fixed at the center of the cover plate 2, and the lower ultrasonic transducer 7 is fixed on the outer surface of the bottom wall 103 of the reactor 1. The connection methods of the upper ultrasonic transducer 6 with the cover plate 2 and the lower ultrasonic transducer 7 with the bottom wall 103 of the reactor 1 can be, for example, bonding with strong glue. The positions of the upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 correspond to each other. The upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 are arranged in parallel and receive the same electrical signal output from the ultrasonic generator 8. Since the distance between the piezoelectric crystal catalyst 3 placed on the first support 4 and the cover plate 2 is equal to the distance between the piezoelectric crystal catalyst 3 and the bottom wall 103 of the reactor 1, the upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 simultaneously emit high-frequency vibration waves to the piezoelectric crystal catalyst 3. The piezoelectric crystal catalyst 3 receives double acoustic energy, generates a strong piezoelectric effect, accelerates the charge transfer and molecular activation processes in the catalytic reaction, and improves the catalytic performance.
[0040] The temperature measuring element 9 is a temperature sensor. The temperature measuring element 9 is fixed on the inner wall of the reactor 1, used to monitor the temperature of the reaction solution in real time, and transmit the temperature information to the controller in real time. The temperature measuring element 9 is preferably multiple and is distributed at different positions inside the reactor 1.
[0041] The controller is a programmable logic controller with storage, analysis, and calculation functions. It can be, for example, a PLC or a DCS. The controller receives the temperature information from the temperature measuring element 9, and after analysis and calculation, outputs a control signal to the ultrasonic generator 8 to adjust the ultrasonic parameters. The ultrasonic parameters include, for example, the frequency, power, action time, etc. of the sound wave. The ultrasonic generator 8 generates an electrical signal and transmits it to the upper ultrasonic transducer 6 and the lower ultrasonic transducer 7. The upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 convert the electrical signal into ultrasonic waves and transmit them to the piezoelectric crystal catalyst 3 through the bottom wall 103 and the cover plate 2 of the reactor 1, realizing precise control of the catalytic reaction conditions. In specific applications, for example, when the temperature measuring element 9 monitors that the temperature inside the reactor 1 is lower than the preset temperature threshold and determines that the reaction is slower, the controller outputs information to increase the frequency or power. The ultrasonic generator 8 receives the control signal and increases the frequency or power. The upper ultrasonic transducer 6 and the lower ultrasonic transducer 7 transmit more acoustic energy to the piezoelectric crystal catalyst 3, improve the piezoelectric effect of the piezoelectric crystal catalyst 3, and promote the reaction. The ultrasonic generator 8, the controller, and the ultrasonic transducer are all devices well-known to those skilled in the art.
[0042] There are multiple support columns 10 provided below the reactor 1. The support columns 10 are used to support the reactor 1. There are at least three support columns 10, preferably four. The multiple support columns 10 are evenly distributed below the reactor 1. The height of the support columns 10 is greater than the height of the lower ultrasonic transducer 7.
[0043] The piezoelectric catalytic device of the present utility model is applied to the fields of environmental purification, energy conversion, and chemical synthesis.
[0044] The preferred embodiments of the present utility model have been described above. However, the above description is not for the purpose of limitation. Those of ordinary skill in the art can make many changes or modifications to the present utility model without departing from the gist and scope of the present utility model. Such changes or modifications should be within the scope of the appended claims.
Claims
1. A piezoelectric catalytic device, characterized in that, It includes a reactor (1) for accommodating the reaction liquid to be catalyzed. A cover plate (2) for covering the opening of the reactor (1) is provided at the top of the reactor (1). Inside the reactor (1), there are a plurality of first support members (4) for placing the piezoelectric crystal catalyst (3) and a plurality of second support members (5) for supporting the cover plate (2). The first support members (4) are arranged below the second support members (5). An upper ultrasonic transducer (6) is fixed on the cover plate (2), and a lower ultrasonic transducer (7) is fixed below the reactor (1). Both the upper ultrasonic transducer (6) and the lower ultrasonic transducer (7) are electrically connected to an ultrasonic generator (8). A temperature measuring element (9) is fixed inside the reactor (1), and the temperature measuring element (9) is connected to the information input end of the controller. The ultrasonic generator (8) is connected to the information output end of the controller.
2. The piezoelectric catalytic device according to claim 1, characterized in that, The reactor (1) is a cylindrical container with a closed bottom end and an open top end. The reactor (1) is provided with a reaction liquid inlet (101) and a reaction liquid outlet (102). The reaction liquid outlet (102) is arranged on the opposite side of the reaction liquid inlet (101), and the reaction liquid inlet (101) and the reaction liquid outlet (102) are arranged at different heights.
3. The piezoelectric catalytic device according to claim 1, characterized in that, The plurality of first support members (4) are dispersedly arranged at the same height inside the reactor (1), and the plurality of first support members (4) are evenly distributed around the circumference of the reactor (1). The central angles formed between adjacent first support members (4) are equal.
4. The piezoelectric catalytic device according to claim 1 or 3, characterized in that, The cross-section of the first support member (4) is in an inverted T shape. The first support member (4) includes a first arc-shaped horizontal plate (401) connected to the inner wall of the reactor (1) and an arc-shaped vertical plate (402) fixed on the first arc-shaped horizontal plate (401). The first arc-shaped horizontal plate (401) is parallel to the bottom wall (103) of the reactor (1), the arc-shaped vertical plate (402) is perpendicular to the first arc-shaped horizontal plate (401), and the distance between the first arc-shaped horizontal plate (401) and the bottom wall (103) of the reactor (1) is half of the height of the reactor (1). The piezoelectric crystal catalyst (3) is placed on the first arc-shaped horizontal plate (401) inside the arc-shaped vertical plate (402), and the plurality of first arc-shaped horizontal plates (401) form a stable support for the piezoelectric crystal catalyst (3).
5. The piezoelectric catalytic device according to claim 1, wherein The piezoelectric crystal catalyst (3) is a circular thin plate, and the diameter of the piezoelectric crystal catalyst (3) is smaller than the diameter of the circle where the arc-shaped vertical plate (402) is located and larger than the diameter of the inner arc of the first arc-shaped horizontal plate (401).
6. The piezoelectric catalytic device according to claim 1, wherein The plurality of second support members (5) are dispersedly arranged at the same height above the first support members (4), and the plurality of second support members (5) are evenly distributed around the circumference of the reactor (1). The second support members (5) and the first support members (4) are arranged in a criss-cross pattern. The distance between the second support members (5) and the top opening of the reactor (1) is equal to the thickness of the cover plate (2).
7. The piezoelectric catalytic device according to claim 1 or 6, characterized in that, The second support member (5) is a second arc-shaped horizontal plate protruding inward along the radial direction of the reactor (1). The second arc-shaped horizontal plate is parallel to the first arc-shaped horizontal plate (401), and the distance that the second arc-shaped horizontal plate protrudes into the reactor (1) is smaller than the distance between the arc-shaped vertical plate (402) and the inner wall of the reactor (1).
8. The piezoelectric catalytic device according to claim 7, wherein The thickness of the cover plate (2) is consistent with the wall thickness of the reactor (1). The diameter of the cover plate (2) is smaller than the inner diameter of the reactor (1) and larger than the diameter of the circle where the inner arc of the second arc-shaped horizontal plate is located.
9. The piezoelectric catalytic device according to claim 1, characterized in that, The upper ultrasonic transducer (6) is fixed at the center of the cover plate (2), and the lower ultrasonic transducer (7) is fixed on the outer surface of the bottom wall (103) of the reactor (1). The positions of the upper ultrasonic transducer (6) and the lower ultrasonic transducer (7) correspond to each other. The upper ultrasonic transducer (6) and the lower ultrasonic transducer (7) are arranged in parallel and receive the same electrical signal output from the ultrasonic generator (8).
10. The piezoelectric catalytic device according to claim 1, wherein, A plurality of support columns (10) are provided below the reactor (1), and the plurality of support columns (10) are evenly distributed below the reactor (1).