Microchannel reactor and production process
By setting up fixed blocks and flow channels in the microchannel reactor to create a vortex effect, the reactants are transformed from laminar to turbulent flow. Combined with countercurrent heat exchange, this solves the problem of low mixing efficiency in the microchannel reactor and improves mixing quality and reaction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN JI-LI ELECTRONIC & CHEM ENG CO LTD
- Filing Date
- 2026-05-25
- Publication Date
- 2026-06-19
AI Technical Summary
In existing microchannel reactors, the reaction materials are in a laminar flow state, resulting in low mixing efficiency, uneven mixing, and slow reaction rate.
A microchannel reactor is designed to create a vortex effect by setting a fixed block and a flow channel inside the reaction tube, which transforms the reaction material from laminar flow to turbulent flow and mixes it multiple times under vortex flow. At the same time, countercurrent heat exchange is used to control the reaction temperature and increase the heat exchange area.
It improves the mixing quality and reaction efficiency of reactants and mixtures, ensures that the reaction takes place within the optimal temperature range, and solves the problems of uneven mixing and slow reaction rate.
Smart Images
Figure CN122230641A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of microchannel reactor technology, specifically a microchannel reactor and its production method. Background Technology
[0002] Microchannel reactors are continuous flow reaction devices with characteristic dimensions ranging from micrometers to millimeters. Their internal microchannel structure provides extremely high specific surface area and excellent mass and heat transfer performance for chemical reactions. Compared to traditional batch reactors, microchannel reactors offer advantages such as faster reaction rates, shorter residence times, higher process safety, and ease of scale-up and integration. Therefore, they are increasingly widely used in fine chemicals, pharmaceuticals, and materials synthesis. Existing microchannel reactors suffer from low mixing efficiency because the fluids within the microchannels are small in size and have relatively low flow rates, resulting in the reactants typically being in a laminar flow state. Mixing between materials mainly relies on molecular diffusion. Summary of the Invention
[0003] The purpose of this invention is to provide a microchannel reactor and production method to solve the problem of low mixing efficiency in the prior art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: A microchannel reactor includes a reaction assembly and a heat exchange assembly. The reaction assembly and the heat exchange assembly are externally provided with a shell. The two ends of the shell are symmetrically provided with conveying chambers. A conveying pipe is provided inside the conveying chamber and passes through the conveying chamber. The reaction assembly consists of several reaction tubes arranged around the axis of the shell. Each reaction tube is connected to a delivery cavity at one end of the shell. Several mixing components are disposed inside each reaction tube. The mixing components are arranged at equal intervals along the axis of the reaction tube. Connecting pipes are provided between the reaction tubes to connect the mixing components in adjacent reaction tubes. The heat exchange assembly consists of a heat exchange cavity, which is disposed between several reaction tubes and the shell. Two delivery pipes are respectively connected to the heat exchange cavity, and the two delivery pipes are the inlet and the outlet.
[0005] The feed pipe transports the reactants to the feed chamber, and then the feed chamber transports the reactants to the reaction tube. At the same time, the mixed material is transported to the reaction tube through the connecting end. The mixed material and the reactants flow together in the reaction tube and pass through the mixing component during the flow, so that the mixing component reacts and mixes the reactants and the mixed material. Meanwhile, the heat exchange fluid is transported to the heat exchange chamber through the feed pipe, so that the reactants and the mixed material exchange heat with the heat exchange fluid during the reaction and mixing process.
[0006] Preferably, the housing is provided with a plurality of conveying rings, which are arranged at equal intervals along the axis of the housing. An intermediate pipe is provided between two adjacent conveying rings, and the intermediate pipe is connected to the conveying ring. The conveying ring is connected to a connecting pipe. One of the conveying rings is provided with a connecting end, which is used to convey the mixed materials.
[0007] Workers connect the connecting ends through pipes, then transport the mixture to the connecting ends through the pipes, and then to the conveying rings through the connecting ends. After the mixture enters the conveying rings, part of the mixture is transported to the connecting pipes through the conveying rings, while the other part of the mixture is transported to the intermediate pipes along the axial direction of the conveying rings, and then to other conveying rings through the intermediate pipes, so that each conveying ring is transported with the mixture. This allows several conveying rings to simultaneously and synchronously transport the mixture to multiple connecting pipes, and then several streams of the mixture are transported to the reaction tubes through the connecting pipes.
[0008] Preferably, the mixing component consists of a fixed block and several flow channels, with the fixed block located in the middle of the reaction tube and the flow channels located on one side of the fixed block.
[0009] After the reactants are conveyed to the reaction tube through the conveying chamber, they flow along the reaction tube. First, the reactants flow past the fixed block, and then, influenced by the fixed block, they flow past both sides of the fixed block under the diversion effect of the fixed block. Then, when the reactants flow past the end of the fixed block, a vortex effect is generated at the end of the fixed block, and the reactants change from a laminar flow state to a turbulent flow state, causing the reactants to generate vortices. The reactants in the vortex state continue to flow along the reaction tube. Subsequently, the reactants flow through the flow channel. As the reactants flow through the flow channel, the reactants change from a turbulent flow state to a laminar flow state during the flow process, and the reactants return to the state before they flowed past the fixed block. By having the reactants flow through the mixing components multiple times, the reactants and mixtures are mixed within the reaction tube. The turbulent vortex formed by the reactants ensures thorough mixing of the mixtures with the reactants under the influence of the vortex, thereby improving the mixing quality.
[0010] Preferably, the fixing block is provided with a cavity tube, which is connected to a connecting tube. Several connecting holes are provided on both sides of the fixing block, one end of which is connected to the cavity tube and the other end of which is connected to the reaction tube.
[0011] The mixture is transported to the cavity tube (i.e., the inside of the fixed block) through the connecting pipe. Then, the mixture is transported to the reaction tube through several connecting holes. Since the connecting holes are located on both sides of the fixed block, the reactants carry the mixture along the side wall of the fixed block and move it from the fixed block to the flow channel. When the reactants flow through the side of the fixed block near the flow channel, they generate vortexes. The mixture and reactants are then mixed under the action of the vortexes. By flowing through the fixed block multiple times and forming vortexes multiple times, the reactants and mixtures are thoroughly mixed.
[0012] Preferably, the cross-section of the fixing block is an isosceles trapezoid, with the shorter side of the cross-section of the fixing block facing the flow channel.
[0013] By setting the cross-section of the fixed block into an isosceles trapezoid, the flow rate of the reaction fluid can be evenly distributed when it flows through both sides of the fixed block. This allows the reaction fluid to form a stable vortex during the flow process, thereby ensuring that the reactants and mixtures are mixed and stirred in the vortex state, thus achieving the effect of mixing reaction.
[0014] Preferably, a plurality of the reaction tubes form a concentric circle structure, and a connecting groove is provided between the two adjacent reaction tubes on the outermost side.
[0015] After the heat exchange fluid enters the heat exchange chamber, the flow direction of the heat exchange fluid is opposite to the flow direction of the reactants. The heat exchange fluid is transported to the space between the shell and the reaction tubes through the connecting groove between the two adjacent reaction tubes on the outermost side. This allows the heat exchange fluid to envelop several reaction tubes, ensuring that the reaction tubes are in full contact with the heat exchange fluid. This ensures that the reactants and mixtures are within a suitable reaction temperature range during the reaction and mixing process, thereby improving the quality of the reaction and mixing.
[0016] Preferably, the conveying chamber is provided with two conveying pipes, namely an inlet end and an outlet end, wherein the inlet end of the conveying pipe faces upward and the outlet end of the conveying pipe faces downward.
[0017] The reactants are fed into the feed end of the feed pipe, enter the conveying chamber through the feed pipe at the feed end, and then be conveyed to several reaction pipes through the conveying chamber. The reactants flow along the reaction pipes to the conveying chamber at the other end of the shell. During the flow, the reactants are mixed and stirred with the mixed materials along the reaction pipes to form stirred materials. The stirred materials are then conveyed through the reaction pipes to the conveying chamber at the discharge end, and discharged outward through the feed pipe at the discharge end of the conveying chamber.
[0018] Preferably, the reaction tube has several trapezoidal grooves on its exterior.
[0019] The reaction tube has several trapezoidal grooves on its outside, which increases the contact area between the reaction tube and the heat exchange fluid, thereby improving the heat exchange effect of the heat exchange fluid. This ensures the heat exchange efficiency between the heat exchange fluid and the reactants and mixtures during the reaction mixing process, thus improving the quality of the reaction mixing of the reactants and mixtures.
[0020] A method for producing a microchannel reactor, the method comprising the following specific steps: S1. The reactants are conveyed to the conveying chamber through the conveying pipe, and the mixture is conveyed to the conveying ring through the connecting end; at the same time, the heat exchange fluid is conveyed to the heat exchange chamber through the conveying pipe. S2. The reactants are conveyed from the conveying chamber to several reaction tubes; S3. The mixture is conveyed by the conveying ring to several connecting pipes, and then conveyed to the cavity pipe through the connecting pipes; S4. When the reactants flow along the reaction tube, they generate vortex shedding as they pass through the stationary block, changing from laminar flow to turbulent flow. S5. When the reactants flow through the fixed block, the mixture is conveyed to the reaction pipe through the connecting hole; S6. The reactants and mixtures react and mix under the action of the vortex street to form stirred materials; S7. The mixed material is conveyed to the conveying pipe located at the discharge end and finally discharged.
[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. By arranging multiple reaction tubes around the axis of the shell, and setting multiple mixing components consisting of fixed blocks and flow channels at equal intervals along the axis inside the reaction tubes, when the reactants flow along the reaction tubes, they will flow through each fixed block in sequence. Due to the turbulence effect of the fixed blocks, the reactants generate a stable vortex street effect when they flow through the end of the fixed blocks, causing them to change from a laminar flow state to a turbulent flow state, forming a vortex flow, thereby providing collision and mixing between the reactants and the mixture.
[0022] 2. Through several mixing components, the reactants and mixtures flow in a vortex state multiple times. That is, through this repeated transformation of "laminar flow to turbulent flow and back to laminar flow", the reactants and mixtures undergo multiple vortex mixing in the reaction tube. This solves the problems of uneven mixing and slow reaction rate caused by laminar diffusion in traditional microchannel reactors, thereby improving the mixing quality of reactants and mixtures and also improving the reaction efficiency of reactants and mixtures.
[0023] 3. The mixture is conveyed through the connecting end to multiple conveying rings set inside the shell. The conveying rings are connected by an intermediate pipe, which can synchronously and evenly distribute the mixture to each connecting pipe and further convey it to the cavity pipe inside each fixed block. Then, it is sprayed into the reaction pipe through multiple connecting holes on both sides of the fixed block. Since the connecting holes are located on the side wall of the fixed block, when the reactant flows through the fixed block, it will carry the sprayed mixture into the vortex area, so that the two materials can fully contact and mix in turbulent state. This achieves simultaneous feeding at multiple points and further improves the quality of full mixing of the mixture and the reactant.
[0024] 4. The heat exchange chamber is located between the reaction tubes and the shell. The heat exchange fluid enters the heat exchange chamber through the delivery pipe, and the flow direction of the heat exchange fluid is opposite to the flow direction of the reactants, thus forming countercurrent heat exchange. At the same time, through the connecting grooves set between the outermost adjacent reaction tubes, the heat exchange fluid fully fills the space between the shell and the outermost reaction tubes, so that the heat exchange fluid completely surrounds several reaction tubes. This, combined with several trapezoidal grooves set outside the reaction tubes, increases the contact area between the reaction tubes and the heat exchange fluid, thereby realizing convective heat exchange. This ensures that the reaction mixing process is always within the optimal temperature range, avoiding local overheating or overcooling, and further improving the reaction mixing quality of the reactants and mixtures. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the external structure of the shell; Figure 2 This is the external front view of the casing; Figure 3 This is a schematic diagram of the internal structure of the shell; Figure 4 This is an internal front view of the casing; Figure 5 This is a schematic diagram of the reaction tube and the delivery ring; Figure 6 This is a schematic diagram of the interior of the reaction tube; Figure 7 This is a top view of the reaction tube; Figure 8 for Figure 3 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the connecting groove structure; Figure 10 This is a schematic diagram of the hybrid component. In the diagram: 1. Shell; 11. Conveying chamber; 12. Conveying pipe; 13. Material conveying pipe; 2. Reaction assembly; 21. Reaction tube; 22. Connecting tube; 23. Conveying ring; 231. Intermediate tube; 24. Connecting end; 25. Connecting groove; 3. Heat exchange components; 31. Heat exchange chamber; 4. Mixing component; 41. Fixing block; 42. Flow channel; 43. Cavity tube; 44. Connecting hole. Detailed Implementation
[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0027] Example: Figures 1-10 As shown, the present invention provides a technical solution: a microchannel reactor, including a reaction component 2 and a heat exchange component 3. The reaction component 2 and the heat exchange component 3 are provided with a shell 1. The two ends of the shell 1 are symmetrically provided with conveying chambers 11. The conveying chambers 11 are provided with conveying pipes 12, which pass through the conveying chambers 11. The reaction assembly 2 consists of a plurality of reaction tubes 21, which are arranged around the axis of the housing 1. The plurality of reaction tubes 21 are respectively connected to the delivery chambers 11 provided at both ends of the housing 1. A plurality of mixing components 4 are provided inside the reaction tubes 21. The plurality of mixing components 4 are arranged at equal intervals along the axis of the reaction tubes 21. A connecting pipe 22 is provided between the plurality of reaction tubes 21, and the connecting pipe 22 connects the mixing components 4 in two adjacent reaction tubes 21. The heat exchange assembly 3 is composed of a heat exchange chamber 31, which is disposed between several reaction tubes 21 and the shell 1. Two delivery pipes 12 are respectively connected to the heat exchange chamber 31, and the two delivery pipes 12 are the inlet and the outlet.
[0028] In one specific embodiment of the present invention, the conveying cavity 11 is provided with a conveying pipe 13, the two conveying pipes 13 being the inlet end and the outlet end, the inlet end of the conveying pipe 13 facing upwards and the outlet end of the conveying pipe 13 facing downwards.
[0029] In one specific embodiment of the present invention, the reaction tube 21 is provided with a plurality of trapezoidal grooves on its exterior.
[0030] In one specific embodiment of the present invention, a plurality of conveying rings 23 are provided inside the housing 1. The plurality of conveying rings 23 are arranged at equal intervals along the axis of the housing 1. An intermediate pipe 231 is provided between two adjacent conveying rings 23. The intermediate pipe 231 is connected to the conveying rings 23. The conveying rings 23 are connected to the connecting pipe 22. One of the conveying rings 23 is provided with a connecting end 24. The connecting end 24 is used to convey the mixed materials.
[0031] In one specific embodiment of the present invention, a plurality of reaction tubes 21 form a concentric circle structure, and a connecting groove 25 is provided between the two adjacent reaction tubes 21 located on the outermost side.
[0032] In one specific embodiment of the present invention, the mixing component 4 consists of a fixed block 41 and a plurality of flow channels 42. The fixed block 41 is located in the middle of the reaction tube 21, and the plurality of flow channels 42 are located on one side of the fixed block 41.
[0033] In one specific embodiment of the present invention, the cross-section of the fixing block 41 is an isosceles trapezoid, and the short side of the cross-section of the fixing block 41 faces the flow channel 42.
[0034] In one specific embodiment of the present invention, a cavity tube 43 is provided inside the fixing block 41, the cavity tube 43 is connected to the connecting tube 22, and a plurality of connecting holes 44 are provided on both sides of the fixing block 41. One end of the connecting hole 44 is connected to the cavity tube 43, and the other end of the connecting hole 44 is connected to the reaction tube 21.
[0035] A method for producing a microchannel reactor, the method comprising the following specific steps: S1. The reactants are conveyed to the conveying chamber 11 through the conveying pipe 13, and the mixture is conveyed to the conveying ring 23 through the connecting end 24; at the same time, the heat exchange fluid is conveyed to the heat exchange chamber 31 through the conveying pipe 12. S2. The reactants are conveyed from the conveying chamber 11 to several reaction tubes 21; S3. The mixed material is conveyed by the conveying ring 23 to several connecting pipes 22, and then conveyed to the cavity pipe 43 through the connecting pipes 22; S4. When the reactant flows along the reaction tube 21, it generates vortex shedding as it flows through the fixed block 41, changing from a laminar flow state to a turbulent flow state. S5. When the reactant flows through the fixed block 41, the mixture is conveyed to the reaction tube 21 through the connecting hole 44. S6. The reactants and mixtures react and mix under the action of the vortex street to form stirred materials; S7. The mixed material is conveyed to the conveying pipe 13 located at the discharge end and finally discharged.
[0036] Working principle of the invention: The reactants are fed into the feed end of the feed pipe 13, enter the conveying chamber 11 through the feed pipe 13 at the feed end, and then be conveyed to several reaction pipes 21 through the conveying chamber 11. The reactants flow along the reaction pipes 21 to the conveying chamber 11 at the other end of the shell 1. Meanwhile, the staff connects the connection end 24 through the pipeline, and then transports the mixture to the connection end 24 through the pipeline, and then to the conveying ring 23 through the connection end 24. After the mixture enters the conveying ring 23, part of the mixture is transported to the connecting pipe 22 through the conveying ring 23, while the other part of the mixture is transported to the intermediate pipe 231 along the axial direction of the conveying ring 23, and then to other conveying rings 23 through the intermediate pipe 231, so that each conveying ring 23 is transported with the mixture, so that several conveying rings 23 simultaneously and synchronously transport the mixture to multiple connecting pipes 22, and then several streams of mixture are transported to the reaction tube 21 through the connecting pipe 22. After the reactants are conveyed to the reaction tube 21 through the conveying chamber 11, they flow along the reaction tube 21. First, the reactants flow through the fixed block 41. Then, the reactants are affected by the fixed block 41 and flow through both sides of the fixed block 41 under the diversion effect of the fixed block 41. Then, when the reactants flow through the end of the fixed block 41, the reactants will generate a vortex effect at the end of the fixed block 41, and the reactants will change from a laminar flow state to a turbulent flow state, causing the reactants to generate vortices. The reactants in the vortex state continue to flow along the reaction tube 21. Then, the reactants will flow through the flow channel 42. As the reactants flow through the flow channel 42, the reactants change from a turbulent flow state to a laminar flow state during the flow process, so that the reactants return to the state before flowing through the fixed block 41. By having the reactants flow through the mixing component 4 multiple times, the reactants and the mixture are mixed in the reaction tube 21. The reactants form turbulent vortices, which allow the mixture to be fully mixed with the reactants under the action of the vortices. The mixture is transported to the cavity tube 43 (i.e., the inside of the fixed block 41) through the connecting pipe 22. Then, the mixture is transported to the reaction tube 21 through several connecting holes 44. Since the connecting holes 44 are located on both sides of the fixed block 41, when the reactant flows through the side wall of the fixed block 41, the reactant will carry the mixture and transport the mixture from the fixed block 41 to the flow channel 42. When the reactant flows through the side of the fixed block 41 near the flow channel 42, the reactant will generate vortex vortices. Then, the mixture and the reactant will mix under the action of the vortex vortex. Thus, by flowing through the fixed block 41 multiple times and forming vortex vortices multiple times, the reactant and the mixture will be fully mixed. By setting the cross-section of the fixed block 41 into an isosceles trapezoid, the flow rate of the reaction fluid can be evenly distributed when it flows through both sides of the fixed block 41, so that the reaction fluid forms a stable vortex during the flow process, thereby ensuring that the reactants and mixtures are mixed and stirred in the vortex state. After the heat exchange fluid enters the heat exchange chamber 31, the flow direction of the heat exchange fluid is opposite to the flow direction of the reactants. The heat exchange fluid is transported to the space between the shell 1 and the reaction tubes 21 through the connecting groove 25 located between the two adjacent outermost reaction tubes 21. This allows the heat exchange fluid to wrap around several reaction tubes 21, ensuring that the reaction tubes 21 are in full contact with the heat exchange fluid. This ensures that the reactants and mixtures are in a suitable reaction temperature range during the reaction mixing process. The reaction tube 21 is provided with several trapezoidal grooves on its outside, which increases the contact area between the reaction tube 21 and the heat exchange fluid, thereby improving the heat exchange effect of the heat exchange fluid and ensuring the heat exchange efficiency between the heat exchange fluid and the reactants and mixtures in the reaction mixing process. During the flow process, the reactants are mixed and stirred with the mixture along the reaction pipe 21 to form stirred material. The stirred material is then transported through the reaction pipe 21 to the conveying chamber 11 located at the discharge end, and discharged outward through the conveying pipe 13 at the discharge end via the conveying chamber 11.
[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A microchannel reactor, characterized in that: It includes a reaction assembly (2) and a heat exchange assembly (3). The reaction assembly (2) and the heat exchange assembly (3) are provided with a shell (1). The two ends of the shell (1) are symmetrically provided with a conveying chamber (11). A conveying pipe (12) is provided inside the conveying chamber (11). The conveying pipe (12) passes through the conveying chamber (11). The reaction assembly (2) consists of several reaction tubes (21), which are arranged around the axis of the shell (1). The reaction tubes (21) are connected to the delivery chambers (11) at both ends of the shell (1). Several mixing components (4) are arranged inside the reaction tubes (21). The mixing components (4) are arranged at equal intervals along the axis of the reaction tubes (21). Connecting pipes (22) are provided between the reaction tubes (21) to connect the mixing components (4) in two adjacent reaction tubes (21). The heat exchange assembly (3) is composed of a heat exchange chamber (31), which is located between several reaction tubes (21) and the shell (1). Two delivery pipes (12) are connected to the heat exchange chamber (31) respectively, and the two delivery pipes (12) are the inlet and the outlet respectively.
2. A microchannel reactor according to claim 1, characterized in that: The housing (1) is provided with a plurality of conveying rings (23), which are arranged at equal intervals along the axis of the housing (1). An intermediate pipe (231) is provided between two adjacent conveying rings (23), which is connected to the conveying rings (23). The conveying rings (23) are connected to the connecting pipe (22). One of the conveying rings (23) is provided with a connecting end (24), which is used to convey the mixed materials.
3. A microchannel reactor according to claim 1, characterized in that: The mixing component (4) consists of a fixed block (41) and several flow channels (42). The fixed block (41) is located in the middle of the reaction tube (21), and the several flow channels (42) are located on one side of the fixed block (41).
4. A microchannel reactor according to claim 3, characterized in that: The fixing block (41) is provided with a cavity tube (43), which is connected to the connecting tube (22). Several connecting holes (44) are provided on both sides of the fixing block (41). One end of the connecting hole (44) is connected to the cavity tube (43), and the other end of the connecting hole (44) is connected to the reaction tube (21).
5. A microchannel reactor according to claim 3, characterized in that: The cross-section of the fixed block (41) is an isosceles trapezoid, and the short side of the cross-section of the fixed block (41) faces the flow channel (42).
6. A microchannel reactor according to claim 1, characterized in that: A number of the reaction tubes (21) form a concentric circle structure, and a connecting groove (25) is provided between the two adjacent reaction tubes (21) on the outermost side.
7. A microchannel reactor according to claim 1, characterized in that: The conveying chamber (11) is provided with a conveying pipe (13). The two conveying pipes (13) are the inlet end and the outlet end, respectively. The inlet end of the conveying pipe (13) faces upward, and the outlet end of the conveying pipe (13) faces downward.
8. A microchannel reactor according to claim 1, characterized in that: The reaction tube (21) has several trapezoidal grooves on its exterior.
9. A method for producing a microchannel reactor as described in any one of claims 1-8, characterized in that: The production method includes the following specific steps: S1. The reactants are conveyed to the conveying chamber (11) through the conveying pipe (13), and the mixture is conveyed to the conveying ring (23) through the connecting end (24); at the same time, the heat exchange fluid is conveyed to the heat exchange chamber (31) through the conveying pipe (12); S2, The reactants are conveyed from the conveying chamber (11) to several reaction tubes (21); S3. The mixture is conveyed by the conveying ring (23) to several connecting pipes (22), and then conveyed to the cavity pipe (43) through the connecting pipes (22); S4. When the reactant flows along the reaction tube (21), it generates vortex shedding as it flows through the fixed block (41), changing from laminar flow to turbulent flow. S5. When the reactant flows through the fixed block (41), the mixture is conveyed to the reaction tube (21) through the connecting hole (44); S6. The reactants and mixtures react and mix under the action of the vortex street to form stirred materials; S7. The mixed material is conveyed to the conveying pipe (13) located at the discharge end and finally discharged.