Micro-channel photoreactor based on Tesla valve structure

Abstract

The invention discloses a micro-channel photoreactor based on a Tesla valve structure. Belongs to the technical field of reactors, the microchannel photoreactor comprises a core assembly and a shell assembly, the core assembly comprises a microchannel plate and a light-transmitting plate, the microchannel plate is provided with a fluid channel groove, the light-transmitting plate and the microchannel plate are stacked, the light-transmitting plate covers a notch of the fluid channel groove, and the fluid channel groove and the light-transmitting plate jointly define a Tesla valve structure. The shell assembly is arranged on the outer side of the core assembly in a sleeving mode, the shell assembly is provided with a light-transmitting hole, the light-transmitting hole is opposite to the light-transmitting plate, the micro-channel photoreactor based on the Tesla valve structure can conduct photocatalytic reaction, the fluid channel groove of the micro-channel plate and the light-transmitting plate jointly define the Tesla valve structure, and the Tesla valve structure can conduct photocatalytic reaction. The combined design of the micro-channel with the Tesla valve structure and the photocatalytic reaction is realized, and the mass transfer rate of the heterogeneous photocatalytic reaction can be effectively improved, so that the chemical reaction rate is improved.

Description

Technical Field

[0001] The present invention relates to the field of reactor technology, and in particular to a microchannel photoreactor based on a Tesla valve structure. Background Art

[0002] In the fields of fine chemicals and drug synthesis, the rate of chemical reactions is a key factor in determining the production process. In conventional microchannel reactors, the mass transfer of heterogeneous systems mainly relies on diffusion, and the mass transfer efficiency is low, which leads to a low reaction rate of the microchannel reactor, which is difficult to meet production needs. Therefore, it is urgent to develop a microchannel reactor that can achieve high mass transfer efficiency and reaction rate. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present invention proposes a microchannel photoreactor based on a Tesla valve structure, which realizes the combined design of a microchannel with a Tesla valve structure and a photocatalytic reaction, and can effectively improve the mass transfer rate and the chemical reaction rate.

[0004] A microchannel photoreactor based on a Tesla valve structure according to an embodiment of the present invention comprises: a core assembly and a shell assembly, wherein the core assembly comprises: a microchannel plate and a light-transmitting plate, wherein the microchannel plate has a fluid channel groove, a medium inlet hole and a medium outlet hole, wherein the medium inlet hole is connected to one end of the fluid channel groove, and the medium outlet hole is connected to the other end of the fluid channel groove, wherein the light-transmitting plate and the microchannel plate are stacked, wherein the light-transmitting plate covers the notch of the fluid channel groove, and wherein the fluid channel groove and the light-transmitting plate jointly define a Tesla valve structure; wherein the shell assembly is sleeved on the outer side of the core assembly, wherein the shell assembly has a light-transmitting hole and an interface hole, wherein the light-transmitting hole is opposite to the light-transmitting plate, and wherein the interface hole is respectively connected to the medium inlet hole and the medium outlet hole.

[0005] According to the microchannel photoreactor based on the Tesla valve structure of the embodiment of the present invention, photocatalytic reactions can be carried out, and the fluid channel grooves of the microchannel plate and the light-transmitting plate jointly define the Tesla valve structure, realizing the combined design of the microchannel with the Tesla valve structure and the photocatalytic reaction, which can effectively improve the mass transfer coefficient of the heterogeneous photocatalytic reaction, thereby increasing the rate of the chemical reaction.

[0006] According to some embodiments of the present invention, the fluid channel grooves are arranged in a meandering manner on the microchannel plate.

[0007] According to some embodiments of the present invention, the fluid channel groove comprises: a plurality of sub-channel grooves, the plurality of sub-channel grooves are arranged side by side, and in two adjacent sub-channel grooves, the outlet of one sub-channel groove is connected to the inlet of another sub-channel groove.

[0008] According to some embodiments of the present invention, the sub-channel groove includes: a plurality of unit channel grooves connected in sequence, the unit channel grooves include: a straight channel groove, an oblique flow channel groove and an arcuate flow channel groove, the oblique flow channel groove is connected to the straight channel groove at an angle, and the oblique flow groove is also connected to the straight channel groove through the arcuate flow groove; wherein, among two adjacent unit channel grooves, the oblique flow groove of one unit channel groove is connected to the straight channel groove of the other unit channel groove and both extend along the first direction or the second direction.

[0009] According to some embodiments of the present invention, on one side opposite to two adjacent sub-channel grooves, the arc-shaped flow channel grooves of the two sub-channel grooves are opposite to each other in the first direction or the second direction.

[0010] According to some embodiments of the present invention, the material of the microchannel plate is at least one of PTFE, PEEK and PP.

[0011] According to some embodiments of the present invention, the light-transmitting plate is made of at least one of quartz glass and high borosilicate glass.

[0012] According to some embodiments of the present invention, the core assembly further comprises: a sealing ring, wherein the sealing ring is sandwiched between the microchannel plate and the light-transmitting plate, and the fluid channel groove is located on the inner side of the sealing ring.

[0013] According to some embodiments of the present invention, the shell assembly includes: a first outer frame, a buffer ring, a second outer frame and fasteners, the first outer frame is located on the side of the microchannel plate away from the light-transmitting plate, and the first outer frame has an interface hole; the buffer ring is located on the side of the light-transmitting plate away from the microchannel plate, and the buffer ring overlaps the edge of the light-transmitting plate; the second outer frame is located on the side of the buffer ring away from the light-transmitting plate, and the second outer frame has the light-transmitting hole; the first outer frame and the second outer frame are connected by the fasteners.

[0014] According to some embodiments of the present invention, the shell assembly further includes: a filling plate, at least a portion of which is sleeved on the outer side of the buffer ring.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional microchannel photoreactor according to an embodiment of the present invention Figure 1 ;

[0017] Figure 2 is a three-dimensional microchannel photoreactor according to an embodiment of the present invention Figure 2 ;

[0018] Figure 3 is an explosion of a microchannel photoreactor according to an embodiment of the present invention Figure 1 ;

[0019] Figure 4 is an explosion of a microchannel photoreactor according to an embodiment of the present invention Figure 2 ;

[0020] Figure 5 is a front view of a microchannel plate according to an embodiment of the present invention;

[0021] Figure 6 is an enlarged view of a fluid channel groove according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Core assembly 1; microchannel plate 11; fluid channel groove 111; sub-channel groove 1111; unit channel groove 11111; direct flow channel groove 1a; oblique flow channel groove 1b; arc flow channel groove 1c; medium inlet hole 112; medium outlet hole 113; limit groove 114; light-transmitting plate 12; sealing ring 13;

[0024] Shell assembly 2; first outer frame 21; interface hole 211; buffer ring 22; second outer frame 23; light-transmitting hole 231; filling plate 24; mounting groove 241;

[0025] Microchannel photoreactor 10. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it is necessary to understand that the terms "length", "width", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Combine the following Figure 1-Figure 6 The microchannel photoreactor 10 based on the Tesla valve structure according to an embodiment of the present invention is described in detail.

[0031] Reference Figure 1-Figure 6 As shown, a microchannel photoreactor 10 based on a Tesla valve structure according to an embodiment of the present invention comprises: a core component 1 and a shell component 2, the core component 1 comprises: a microchannel plate 11 and a light-transmitting plate 12, the microchannel plate 11 has a fluid channel groove 111, a medium inlet hole 112 and a medium outlet hole 113, the medium inlet hole 112 is connected to one end of the fluid channel groove 111, and the medium outlet hole 113 is connected to the other end of the fluid channel groove 111, the light-transmitting plate 12 is stacked with the microchannel plate 11, the light-transmitting plate 12 covers the notch of the fluid channel groove 111, and the fluid channel groove 111 and the light-transmitting plate 12 jointly define a Tesla valve structure, the shell component 2 is sleeved on the outside of the core component 1, the shell component 2 has a light-transmitting hole 231 and an interface hole 211, the light-transmitting hole 231 is opposite to the light-transmitting plate 12, and the interface hole 211 is respectively connected to the medium inlet hole 112 and the medium outlet hole 113.

[0032] It should be noted that the microchannel photoreactor 10 can perform chemical reactions to prepare the required substances. Specifically, the reactants participating in the chemical reaction can flow into the fluid channel groove 111 through the interface hole 211 and the medium inlet hole 112 in sequence to participate in the chemical reaction in the fluid channel groove 111. The products generated by the reaction of the reactants can flow out of the flow channel groove through the medium outlet hole 113, and then flow out of the microchannel photoreactor 10 through the interface hole 211 to facilitate the collection of the products. The reactants can be fluids such as gas, liquid, and gas-liquid mixture.

[0033] It can be understood that the light-transmitting hole 231 is opposite to the light-transmitting plate 12, and light can pass through the light-transmitting hole 231 to illuminate the light-transmitting plate 12. The light-transmitting plate 12 allows light to pass through. The light irradiated to the light-transmitting plate 12 can pass through the light-transmitting plate 12 to illuminate the reactants in the fluid channel groove 111, so as to utilize light energy to photocatalyze the reactants, realize photocatalytic reaction, and increase the chemical reaction rate.

[0034] The fluid channel groove 111 can realize flow chemical reaction, that is, the reactants participate in the chemical reaction while continuously flowing in the fluid channel groove 111, which can improve the efficiency of mass transfer and heat transfer and facilitate the full reaction of the reactants.

[0035] The fluid channel groove 111 and the light-transmitting plate 12 jointly define a Tesla valve structure. The Tesla valve structure can ensure that the reactants flow evenly in the fluid channel groove 111, effectively avoid the accumulation and uneven distribution of the reactants, and ensure the unidirectional fluidity of the reactants, reduce reflux and pressure fluctuations, ensure the controllability and uniformity of the reaction conditions, and can enhance the mass transfer and heat transfer process. It can effectively improve the mass transfer rate of the heterogeneous photocatalytic reaction, which is conducive to further improving the rate of the chemical reaction.

[0036] According to the microchannel photoreactor 10 based on the Tesla valve structure of the embodiment of the present invention, a photocatalytic reaction can be carried out, and the fluid channel groove 111 of the microchannel plate 11 and the light-transmitting plate 12 jointly define the Tesla valve structure, realizing the combined design of the microchannel with the Tesla valve structure and the photocatalytic reaction, which can effectively improve the mass transfer coefficient of the heterogeneous photocatalytic reaction, thereby increasing the rate of the chemical reaction.

[0037] In some embodiments of the present invention, reference Figure 3-Figure 5 As shown, the fluid channel grooves 111 are arranged in a zigzag manner on the microchannel plate 11, which is conducive to the full reaction of the reactants in the fluid channel.

[0038] It is understandable that the length of the serpentine arrangement of the fluid channel groove 111 is longer, which can increase the flow time of the reactant in the fluid channel groove 111, thereby increasing the reaction time of the reactant, which is conducive to the full reaction of the reactant, and the serpentine arrangement of the fluid channel groove 111 can make full use of the area of ​​the region corresponding to the light-transmitting hole 231 of the microchannel plate 11, which is conducive to increasing the illumination area of ​​the fluid channel groove 111, thereby helping to improve the efficiency of photocatalysis. Among them, the flow channel groove can be arranged in an "S"-shaped serpentine arrangement, and the flow channel groove can also be arranged in a planar spiral serpentine arrangement.

[0039] In some embodiments of the present invention, reference Figure 5As shown, the fluid channel groove 111 includes: a plurality of sub-channel grooves 1111, and the plurality of sub-channel grooves 1111 are arranged side by side. In two adjacent sub-channel grooves 1111, the outlet of one sub-channel groove 1111 is connected to the inlet of another sub-channel groove 1111. The plurality of sub-channel grooves 1111 are arranged side by side to make full use of the area of ​​the microchannel plate 11 corresponding to the light-transmitting hole 231, which is beneficial to increase the illumination area of ​​the fluid channel groove 111, thereby helping to improve the efficiency of photocatalysis.

[0040] In some embodiments of the present invention, reference Figure 5 and Figure 6 As shown, the sub-channel groove 1111 includes: a plurality of unit channel grooves 11111 connected in sequence, the unit channel groove 11111 includes: a straight channel groove 1a, an oblique flow channel groove 1b and an arcuate flow channel groove 1c, the oblique flow channel groove 1b is connected to the straight channel groove 1a at an angle, and the oblique flow channel groove 1b is also connected to the straight channel groove 1a through the arcuate flow channel groove 1c, wherein, in two adjacent unit channel grooves 11111, the oblique flow channel groove 1b of one unit channel groove 11111 is connected to the straight channel groove 1a of the other unit channel groove 11111 and both extend along the first direction or the second direction.

[0041] Reference Figure 5 and Figure 6 As shown, the first direction is Figure 5 and Figure 6 The d direction, the second direction can be Figure 5 and Figure 6 In the middle e direction, of two adjacent unit channel grooves 11111, the straight flow groove 1a of one unit channel groove 11111 extends along the first direction and the oblique flow groove 1b extends along the second direction, and the straight flow groove 1a of the other unit channel groove 11111 extends along the second direction and the oblique flow groove 1b extends along the first direction. The sub-channel groove 1111 can be constructed as a folded line structure to make full use of the area of ​​the microchannel plate 11 corresponding to the light-transmitting hole 231, which is beneficial to increase the illumination area of ​​the fluid channel groove 111, thereby helping to improve the efficiency of photocatalysis.

[0042] It should be noted that each unit channel groove 11111 can define a Tesla valve unit structure with the light-transmitting plate 12, and the direct flow channel 1a of each unit channel groove 11111 and the light-transmitting plate 12 can define the main channel of the Tesla valve unit structure, and the oblique flow channel 1b and the arcuate flow channel 1c together with the light-transmitting plate 12 define the branch channel of the Tesla valve unit structure.

[0043] Specifically, the inner diameter of the main channel is wider, the flow area is larger, and the risk of blockage is smaller. Even when one of the main channel and the branch channel is blocked, the reactant can still flow through the other of the main channel and the branch channel, thereby achieving overall unobstructed fluid channel groove 111 to facilitate smooth flow of reactants.

[0044] In addition, the main channel and the branch channels can form a complex channel formed by multi-level diversion and convergence, which can significantly hinder the reverse flow of the reactants, and form an enhanced mixing area at the intersection of the main channel and the branch channels, which can break the laminar state of the reactants, generate secondary flow through centrifugal force, and achieve turbulent mixing. It can effectively enhance the interaction between the reactants and significantly enhance the mixing effect of the reactants. It can significantly increase the mass transfer efficiency in a liquid reaction environment with a low Reynolds number, which is beneficial to improving the stability and efficiency of the photocatalytic reaction.

[0045] Among them, in the branch channel design of the Tesla valve unit structure, curved pipes and pipe wall designs with different curvatures can be used.

[0046] In some embodiments of the present invention, reference Figure 5 and Figure 6 As shown, on the opposite side of two adjacent sub-channel grooves 1111, the arcuate flow grooves 1c of the two sub-channel grooves 1111 are opposite in the first direction or the second direction, so that the arcuate flow grooves 1c of the two sub-channel grooves 1111 are arranged in a staggered manner, so as to further make full use of the area of ​​the microchannel plate 11 corresponding to the light-transmitting hole 231, which is beneficial to increase the illumination area of ​​the fluid channel groove 111, thereby helping to improve the efficiency of photocatalysis.

[0047] In some embodiments of the present invention, the material of the microchannel plate 11 is at least one of PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone) and PP (polypropylene). PTFE, PEEK and PP have excellent chemical corrosion resistance and can remain stable in high acid and alkali environments. They can reduce the risk of corrosion of the microchannel plate 11, improve the stability of the microchannel plate 11, and help improve the repeatability of the reaction.

[0048] In some embodiments, the material of the microchannel plate 11 is PTFE. PTFE has a low friction coefficient, which is beneficial to reducing the resistance to the flow of reactants in the fluid channel, so as to facilitate the smooth flow of reactants and reduce the risk of fluid channel blockage. PTFE exhibits strong inertness in chemical reactions and can withstand a variety of strong acids, strong alkalis and organic solvents, thereby reducing the risk of corrosion of the microchannel plate 11.

[0049] In other embodiments, the material of the microchannel plate 11 is PEEK. PEEK has high mechanical strength, which is beneficial to improving the structural stability of the microchannel plate 11. PEEK has good mechanical stability under high pressure and high temperature and is suitable for extreme reaction conditions of high pressure and high temperature.

[0050] In some other embodiments, the material of the microchannel plate 11 is PP, which has a relatively low cost, thereby reducing the manufacturing cost of the microchannel plate 11 and improving the economic efficiency of the photoelectric microchannel reactor.

[0051] In addition, the microchannel plate 11 may be a multi-layer structure, wherein one layer is made of PTFE material and the other layer is made of PEEK or PP material, so that the structural strength and corrosion resistance of the microchannel plate 11 can be adjusted through the multi-layer composite material.

[0052] In some embodiments of the present invention, the material of the light-transmitting plate 12 is at least one of quartz glass and high borosilicate glass. For example, the material of the light-transmitting plate 12 may be quartz glass or high borosilicate glass. For another example, the light-transmitting plate 12 may be a double-layer structure, one layer of which is quartz glass and the other layer is high borosilicate glass. Quartz glass and high borosilicate glass have high light transmittance, ensuring that light energy can be efficiently transferred to the reactants and ensuring the smooth progress of the photocatalytic reaction. Quartz glass and high borosilicate glass also have good chemical stability, which is beneficial to ensuring the corrosion resistance and oxidation resistance of the light-transmitting plate 12.

[0053] In some embodiments of the present invention, reference Figure 3 and Figure 4 As shown, the core assembly 1 also includes: a sealing ring 13, which is clamped between the microchannel plate 11 and the light-transmitting plate 12, and the fluid channel groove 111 is located on the inner side of the sealing ring 13. The sealing ring 13 can ensure the sealing between the microchannel plate 11 and the light-transmitting plate 12, and can effectively prevent the reactants in the fluid channel groove 111 from leaking.

[0054] Reference Figure 3 and Figure 5 As shown, the microchannel plate 11 has a limiting groove 114, which is arranged around the outer side of the fluid channel groove 111. At least a part of the sealing ring 13 is suitable for being installed in the limiting groove 114. The inner side wall of the limiting groove 114 can limit the sealing ring 13 to prevent the sealing ring 13 from falling off and avoid sealing failure.

[0055] In some embodiments of the present invention, reference Figure 1-Figure 4As shown, the shell assembly 2 includes: a first outer frame 21, a buffer ring 22, a second outer frame 23 and fasteners, the first outer frame 21 is located on the side of the microchannel plate 11 away from the light-transmitting plate 12, the first outer frame 21 has an interface hole 211, the buffer ring 22 is located on the side of the light-transmitting plate 12 away from the microchannel plate 11, the buffer ring 22 overlaps the edge of the light-transmitting plate 12, the second outer frame 23 is located on the side of the buffer ring 22 away from the light-transmitting plate 12, the second outer frame 23 has a light-transmitting hole 231, and the first outer frame 21 and the second outer frame 23 are connected by fasteners.

[0056] It can be understood that when the first outer frame 21 and the second outer frame 23 are connected by fasteners, the first outer frame 21 is tightly attached to the left end face of the microchannel plate 11, the interface hole 211 is respectively connected to the medium inlet hole 112 and the medium outlet hole 113, and the second outer frame 23 presses the buffer ring 22 to the left to press against the light-transmitting plate 12 through the buffer ring 22, so that the light-transmitting plate 12 is tightly attached to the right end face of the microchannel plate 11, so that the fluid channel groove 111 and the light-transmitting plate 12 jointly define the Tesla valve structure.

[0057] The buffer ring 22 overlaps the edge of the light-transmitting plate 12 , and the buffer ring 22 can play a role of vibration reduction and buffering, and can reduce the impact force on the light-transmitting plate 12 , thereby helping to reduce the risk of damage to the light-transmitting plate 12 .

[0058] In some embodiments, the fasteners can be screws, or bolts and nuts, which can ensure the connection strength between the first outer frame 21 and the second outer frame 23, and can firmly fix the first outer frame 21, the core assembly 1, the buffer ring 22 and the second outer frame 23 together, which is beneficial to improving the structural stability of the microchannel photoreactor 10.

[0059] In other embodiments, the fastener may be a clamp. When the clamp is clamped, the first outer frame 21 and the second outer frame 23 jointly clamp the core assembly 1 and the buffer ring 22 therebetween, so that the first outer frame 21, the core assembly 1, the buffer ring 22 and the second outer frame 23 form a whole. When the clamp is loosened, each component of the microchannel photoreactor 10 can be separated to facilitate disassembly or replacement of each component, thereby facilitating the production and maintenance of the microchannel photoreactor 10.

[0060] In some embodiments of the present invention, the first outer frame 21 and the second outer frame 23 may be made of stainless steel. Stainless steel has good structural strength, can improve the structural stability of the microchannel photoreactor 10, and can provide reliable support.

[0061] In some embodiments of the present invention, reference Figure 3 and Figure 4 As shown, the shell assembly 2 further includes: a filling plate 24 , at least a portion of which is sleeved on the outside of the buffer ring 22 , so as to realize the installation and fixation of the buffer ring 22 .

[0062] Reference Figure 4 As shown, the filling plate 24 has a mounting groove 241 on one side facing the microchannel plate 11, and at least part of the buffer ring 22 and the light-transmitting plate 12 are located in the mounting groove 241. The inner side wall of the mounting groove 241 can abut against the outer peripheral wall of the buffer ring 22 to limit the buffer ring 22, which is beneficial to reduce the risk of the buffer ring 22 shaking or falling off. The inner side wall of the mounting groove 241 can also abut against the outer peripheral wall of the light-transmitting plate 12 to limit the light-transmitting plate 12, which is beneficial to reduce the risk of shaking or falling off of the light-transmitting plate 12. The material of the filling plate 24 can be PTFE.

[0063] In some embodiments of the present invention, the power of the light source for emitting light is in the range of 50W to 150W, so as to provide sufficient illumination for the reactants, which is conducive to ensuring the smooth progress of the photocatalytic reaction. The power of the light source can be flexibly selected according to different reaction conditions, wherein the light source can be a COB light source, an LED light source, etc.

[0064] In some embodiments of the present invention, according to application requirements and processing capabilities, the width and depth of the fluid channel groove 111 can be adjusted between 0.5 mm and 3 mm. The width and depth of the fluid channel groove 111 can be flexibly selected to meet the needs of different reaction systems and ensure reaction efficiency and uniformity. For example, a narrower channel (such as 0.5 mm) can increase the contact area between the reactants, thereby improving the mass transfer efficiency, while a wider channel (such as 3 mm) can be suitable for reactions that require a larger flow rate or a higher flow rate. In this embodiment, the width of the fluid channel groove 111 is 2.2 mm and the depth is 1 mm.

[0065] In some specific embodiments of the present invention, referring to Figure 3 and Figure 4 As shown, the first outer frame 21, the microchannel plate 11, the sealing ring 13, the light-transmitting plate 12, the buffer ring 22, the filling plate 24 and the second outer frame 23 are stacked in sequence to form a multi-layer fastening structure. The structure of a certain layer can be directly replaced to achieve the maintenance effect, and the maintenance is convenient.

[0066] According to the microchannel photoreactor 10 based on the Tesla valve structure of the embodiment of the present invention, the microchannel photoreactor 10 uses moderately priced quartz glass, stainless steel and PTFE materials to solve the problems of insufficient mass transfer and heat transfer, fluid stability and material durability, and optimizes the chemical reaction efficiency and the modular design of the microchannel photoreactor 10 through a multi-layer fastening structure, achieving lower maintenance costs and higher chemical compatibility, which can reduce the difficulty and maintenance costs of the experiment. The microchannel photoreactor 10 of this embodiment has good economy, and its Tesla valve structure can effectively avoid the clogging problem of sediment when processing liquid-liquid or gas-liquid heterogeneous reaction systems, and can form an effective micro-dispersion system, which can effectively improve the mass transfer rate and chemical reaction rate of heterogeneous fluids.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A microchannel photoreactor based on a Tesla valve structure, characterized in that: include: A core assembly (1), the core assembly (1) comprising: a microchannel plate (11) and a light-transmitting plate (12), the microchannel plate (11) having a fluid channel groove (111), a medium inlet hole (112) and a medium outlet hole (113), the medium inlet hole (112) being connected to one end of the fluid channel groove (111), the medium outlet hole (113) being connected to the other end of the fluid channel groove (111), the light-transmitting plate (12) being stacked with the microchannel plate (11), the light-transmitting plate (12) covering the notch of the fluid channel groove (111), and the fluid channel groove (111) and the light-transmitting plate (12) jointly defining a Tesla valve structure; A shell component (2), wherein the shell component (2) is sleeved on the outside of the core component (1), and the shell component (2) has a light-transmitting hole (231) and an interface hole (211), wherein the light-transmitting hole (231) is opposite to the light-transmitting plate (12), and the interface hole (211) is respectively connected to the medium inlet hole (112) and the medium outlet hole (113).

2. The microchannel photoreactor based on the Tesla valve structure according to claim 1, characterized in that: The fluid channel grooves (111) are arranged in a zigzag manner on the microchannel plate (11).

3. The microchannel photoreactor based on the Tesla valve structure according to claim 2, characterized in that: The fluid channel groove (111) comprises: a plurality of sub-channel grooves (1111), wherein the plurality of sub-channel grooves (1111) are arranged side by side, and in two adjacent sub-channel grooves (1111), the outlet of one sub-channel groove (1111) is connected to the inlet of another sub-channel groove (1111).

4. The microchannel photoreactor based on the Tesla valve structure according to claim 3, characterized in that: The sub-channel groove (1111) comprises: a plurality of sequentially connected unit channel grooves (11111), the unit channel groove (11111) comprising: a straight channel groove (1a), an oblique channel groove (1b) and an arcuate channel groove (1c), the oblique channel groove (1b) being connected to the straight channel groove (1a) at an angle, and the oblique channel groove (1b) being further connected to the straight channel groove (1a) via the arcuate channel groove (1c); Among them, in two adjacent unit channel grooves (11111), the oblique flow groove (1b) of one unit channel groove (11111) is connected with the straight flow groove (1a) of the other unit channel groove (11111) and both extend along the first direction or the second direction.

5. The microchannel photoreactor based on the Tesla valve structure according to claim 4, characterized in that: On one side opposite to two adjacent sub-channel grooves (1111), the arcuate flow channel grooves (1c) of the two sub-channel grooves (1111) are opposite to each other in the first direction or the second direction.

6. The microchannel photoreactor based on the Tesla valve structure according to claim 1, characterized in that: The material of the microchannel plate (11) is at least one of PTFE, PEEK and PP.

7. The microchannel photoreactor based on the Tesla valve structure according to claim 1, characterized in that: The material of the light-transmitting plate (12) is at least one of quartz glass and high borosilicate glass.

8. The microchannel photoreactor based on the Tesla valve structure according to claim 1, characterized in that: The core assembly (1) further comprises: a sealing ring (13), wherein the sealing ring (13) is sandwiched between the microchannel plate (11) and the light-transmitting plate (12), and the fluid channel groove (111) is located on the inner side of the sealing ring (13).

9. The microchannel photoreactor based on the Tesla valve structure according to any one of claims 1 to 8, characterized in that: The housing assembly (2) comprises: A first outer frame (21), the first outer frame (21) being located on a side of the microchannel plate (11) away from the light-transmitting plate (12), the first outer frame (21) having an interface hole (211); a buffer ring (22), the buffer ring (22) being located on a side of the light-transmitting plate (12) away from the microchannel plate (11), the buffer ring (22) overlapping an edge of the light-transmitting plate (12); a second outer frame (23), the second outer frame (23) being located on a side of the buffer ring (22) away from the light-transmitting plate (12), the second outer frame (23) having the light-transmitting hole (231); A fastener, wherein the first outer frame (21) and the second outer frame (23) are connected via the fastener.

10. The microchannel photoreactor based on the Tesla valve structure according to claim 9, characterized in that: The shell assembly (2) further comprises a filling plate (24), at least a portion of which is sleeved on the outside of the buffer ring (22).

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