Microchannel polymerization reaction process

Abstract

The invention relates to the technical field of micro-channel reaction, and discloses a micro-channel polymerization reaction process which comprises the following steps: 1, mixing a monomer, an initiator, a solvent and other additives according to a required ratio, ensuring uniform distribution, uniformly mixing by using a static mixer or an oscillator, and preparing to enter a reactor; 2, feeding the mixed raw materials into a micro-channel reactor through an accurately controlled pump; by arranging the medium inlet, uniformly mixed raw materials are fed into the vertical channels, and a medium sequentially passes through the vertical channels and the connecting channels to complete polymerization reaction. The position of the sliding pipe is adjusted through the adjusting component, the volume of the vertical channel can be dynamically increased, the requirements of fluids with different viscosities are met, meanwhile, the angle of the connecting channel is changed, the fluid path is shortened, the flowability is improved, and the retention time is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of microchannel reaction, in particular to a microchannel polymerization reaction process. Background Art

[0002] A microchannel reactor is a device that conducts chemical reactions through precisely designed micro-scale flow channels. Microchannel reactors are widely used in the fields of efficient chemical reactions, polymerization reactions, catalytic reactions, heat exchange, etc., especially in the fine chemical, pharmaceutical, energy, and environmental industries. Due to its good heat and mass transfer effects and precise reaction control, microchannel reactors have shown superior performance in improving reaction efficiency, shortening reaction time, and reducing energy consumption.

[0003] In existing microchannel polymerization reactors, the volume is usually fixed in design. This means that the flow channel, cross-sectional size and channel length of the reactor are determined during the design. When high-viscosity fluids (such as intermediates of certain polymerization reactions, oils or polymer solutions, etc.) flow, the flow resistance increases and the flow rate decreases, which may cause the fluid to be retained in the microchannel and flow unevenly. To this end, by expanding the volume, that is, increasing the cross-sectional area of ​​the microchannel, the flow rate of the fluid in the channel is relatively reduced, thereby reducing the flow resistance of the fluid. This is especially important for high-viscosity fluids. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a microchannel polymerization process, aiming to alleviate the above problems at least to a certain extent.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A microchannel polymerization process comprises the following steps:

[0007] Step 1: Mix the monomers, initiator, solvent and other additives in the required proportions to ensure uniform distribution, use a static mixer or oscillator to mix evenly, and prepare to enter the reactor;

[0008] Step 2: The mixed raw materials are fed into the microchannel reactor by a precisely controlled pump;

[0009] Step 3: In the microchannel, the raw materials undergo polymerization reaction under the condition of efficient mixing. The temperature control system keeps the temperature in the reactor stable. Through the space of the channel, the reaction rate and the contact efficiency of the reactants are improved to ensure rapid conversion.

[0010] Step 4: After the polymerization reaction is completed, the temperature of the product is lowered by a cooling system to prevent overreaction. Unreacted substances or impurities need to be removed by filtration or centrifugation to ensure the purity of the product.

[0011] Step 5: Collect the polymer product and perform post-processing by solvent recovery, drying or granulation;

[0012] Step 6: Finally, quality inspection and packaging are carried out, ready for delivery or for the next step of production;

[0013] The microchannel reactor described in step 2 comprises:

[0014] Reaction shell;

[0015] A plurality of vertical channels are provided in the reaction shell, wherein a medium inlet is connected to the reaction shell at the leftmost vertical channel, and a medium outlet is connected to the reaction shell at the rightmost vertical channel;

[0016] A connecting channel provided between two adjacent vertical channels, wherein the connecting channel is provided in a V shape;

[0017] A fixed pipe and a sliding pipe are arranged in the vertical channel, and the sliding pipe is slidably connected to the fixed pipe;

[0018] A plurality of heating parts provided on one side of the vertical channel for generating heat;

[0019] An adjusting component provided between the vertical channel and the connecting channel, used to move the position of the sliding tube to increase the volume of the medium contained in the vertical channel, and the adjusting component can adjust the angle of the connecting channel when the sliding tube moves toward the fixed tube, so that the angle between the connecting channel and the vertical channel is increased and the length of the connecting channel is shortened;

[0020] Wherein, the adjusting component can also allow multiple heating parts to be inserted into the vertical channel in sequence when the sliding tube is moved.

[0021] Preferably, the adjusting component includes a screw a rotatably connected to the vertical channel, one side of the sliding tube is connected to a sliding frame threadedly connected to the screw a, one side of the sliding tube is connected to a sleeve, the sleeve is slidably connected to the fixed tube, and the fixed tube is connected to the connecting channel.

[0022] Preferably, the connecting channel includes a connecting pipe a rotatably connected to two adjacent vertical channels, a connecting pipe b is slidably connected to the connecting pipe a, a hose is connected between the two connecting pipes b, and a hose is also connected between the connecting pipe a and the fixed pipe.

[0023] Preferably, the adjusting component also includes a connecting rod connected to the connecting tube b, a connecting frame is provided between two adjacent vertical channels, the connecting rod is slidably sleeved on the connecting frame, a threaded tube is connected to one side of the connecting frame, a lead screw b is rotatably connected between the two vertical channels, a chain transmission mechanism is provided between the lead screw a and the lead screw b, and the lead screw b is threadedly connected to the threaded tube.

[0024] Preferably, the heating portion comprises a plug-in tube arranged at one side of the vertical channel, and a heating wire is arranged in the plug-in tube.

[0025] Preferably, the lead screw b is slidably connected to a gear a, and the plug-in cylinder is slidably connected to one side of the vertical channel and is connected to a rack adapted to the gear a.

[0026] Preferably, the screw b is connected to a gear b, one side of the vertical channel is rotatably connected to a gear c meshing with the gear b, a traction rope is wound on the gear c, one side of the vertical channel is connected to a limiting frame, one side of the gear a is rotatably connected to a traction frame slidably connected to the limiting frame, and one end of the traction rope is connected to the traction frame.

[0027] Preferably, the chain transmission mechanism includes a sprocket connected to the lead screw a, the lead screw b is also connected to a sprocket, a chain transmission member is provided between the two sprockets, and a spring a is provided between the gear a and an adjacent sprocket.

[0028] Preferably, a plug-in opening adapted to the heating part is provided on one side of the vertical channel, a baffle is provided in the plug-in opening, a limiting tube is connected to the vertical channel, a limiting rod slidably mounted on the limiting tube is connected to one side of the baffle, a top rod is slidably connected to the inner wall of the limiting tube, a top groove is provided on the outer wall of the limiting rod, the top groove is a semi-spherical groove, one end of the top rod that cooperates with the top groove is semi-spherical, a spring b is provided between the top rod and the limiting tube, and the baffle is a magnet.

[0029] In summary, the present invention mainly has the following beneficial effects:

[0030] The present application provides a medium inlet to feed the uniformly mixed raw materials into the vertical channel, and the medium passes through multiple vertical channels and connecting channels in sequence to complete the polymerization reaction. By adjusting the position of the sliding tube by adjusting the component, the volume of the vertical channel can be dynamically increased to meet the needs of fluids with different viscosities. At the same time, the angle of the connecting channel can be changed to shorten the fluid path, improve fluidity and optimize residence time. The heating component provides a heat source for the medium, achieves a balance between volume adjustment and thermal management, and improves the processing capacity of high-viscosity fluids. The V-shaped connecting channel optimizes the mixing and flow diversion effects, further improving the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the reaction shell structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the vertical channel structure of the present invention;

[0034] Figure 4 is another schematic diagram of the vertical channel structure of the present invention;

[0035] Figure 5 is another schematic diagram of the vertical channel structure of the present invention;

[0036] Figure 6 It is a schematic diagram of the connecting channel structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the limiting frame of the present invention;

[0038] Figure 8 It is a schematic diagram of the structure of gear a of the present invention;

[0039] Fig. 9 It is a schematic diagram of the heating part structure of the present invention;

[0040] Fig.10 It is a schematic diagram of the baffle structure of the present invention;

[0041] Fig.11 yes Fig.10 A schematic diagram of the enlarged local structure at point A in the middle.

[0042] Reference numerals:

[0043] 100, reaction shell; 101, vertical channel; 102, medium inlet; 103, medium outlet; 104, connecting channel; 105, fixed pipe; 106, sliding pipe; 107, heating part;

[0044] 200, lead screw a; 201, sliding frame; 202, sleeve;

[0045] 300, connecting pipe a; 301, connecting pipe b; 302, hose; 303, connecting rod; 304, connecting frame; 305, threaded pipe; 306, lead screw b; 307, plug-in cylinder; 308, heating wire;

[0046] 400, gear a; 401, rack; 402, gear b; 403, gear c; 404, traction rope; 405, limit frame; 406, traction frame; 407, sprocket; 408, chain transmission member; 409, spring a;

[0047] 500, plug-in opening; 501, baffle; 502, limit tube; 503, limit rod; 504, push rod; 505, top groove; 506, spring b. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] refer to Figure 1-Figure 11 , a microchannel polymerization process, comprising the following steps:

[0050] Step 1: Mix the monomers, initiator, solvent and other additives in the required proportions to ensure uniform distribution, use a static mixer or oscillator to mix evenly, and prepare to enter the reactor;

[0051] Step 2: The mixed raw materials are fed into the microchannel reactor by a precisely controlled pump;

[0052] Step 3: In the microchannel, the raw materials undergo polymerization reaction under the condition of efficient mixing. The temperature control system keeps the temperature in the reactor stable. Through the space of the microchannel, the reaction rate and the contact efficiency of the reactants are improved to ensure rapid conversion.

[0053] Step 4: After the polymerization reaction is completed, the temperature of the product is lowered by a cooling system to prevent overreaction. Unreacted substances or impurities need to be removed by filtration or centrifugation to ensure the purity of the product.

[0054] Step 5: Collect the polymer product and perform post-processing by solvent recovery, drying or granulation;

[0055] Step 6: Finally, quality testing (such as molecular weight, particle size, etc.) is carried out and packaging is carried out, ready for delivery or for the next step of production;

[0056] The microchannel reactor in step 2 comprises:

[0057] Reaction housing 100;

[0058] A plurality of vertical channels 101 are provided in the reaction housing 100, a medium inlet 102 is connected between the leftmost vertical channel 101 and the reaction housing 100, and a medium outlet 103 is connected between the rightmost vertical channel 101 and the reaction housing 100;

[0059] A connecting channel 104 is provided between two adjacent vertical channels 101, and the connecting channel 104 is provided in a V shape;

[0060] A fixed pipe 105 and a sliding pipe 106 are arranged in the vertical channel 101, and the sliding pipe 106 is slidably connected to the fixed pipe 105;

[0061] A plurality of heating parts 107 provided on one side of the vertical channel 101 for generating heat;

[0062] The adjusting component provided between the vertical channel 101 and the connecting channel 104 is used to move the position of the sliding tube 106 to increase the volume of the medium contained in the vertical channel 101. The adjusting component can adjust the angle of the connecting channel 104 when the sliding tube 106 moves toward the fixed tube 105, so that the angle between the connecting channel 104 and the vertical channel 101 is increased and the length of the connecting channel 104 is shortened;

[0063] The adjusting component can also allow the plurality of heating parts 107 to be inserted into the vertical channel 101 in sequence when the sliding tube 106 is moved;

[0064] By setting the medium inlet 102, when used, the monomer, initiator, solvent and other additives are mixed in the required proportion to ensure uniform distribution, and a static mixer or oscillator is used for uniform mixing. The mixed raw materials are sent into the vertical channel 101 through the medium inlet 102 by a precisely controlled pump. The medium will pass through multiple vertical channels 101 and multiple connecting channels 104 from left to right in sequence, and finally be discharged from the medium outlet 103. The medium completes the polymerization reaction after efficient mixing. Specifically, through the action of the adjusting component, the position of the sliding tube 106 can be adjusted in the vertical channel 101 to increase the volume of the medium to meet the flow requirements of fluids with different viscosities. When the adjusting component moves the position of the sliding tube 106, not only the volume of the vertical channel 101 is adjusted, but also by changing the angle of the connecting channel 104, it forms a better fluid channel path, thereby shortening the channel length, optimizing the fluid residence time, and improving the fluid fluidity. When the adjusting component adjusts the position of the sliding tube 106, the volume of the vertical channel 101 for accommodating the medium will gradually increase, and the heating part 107 is inserted into the vertical channel 101 in turn to provide a heat source for the medium. A dynamic balance between the volume of the vertical channel 101 and the thermal management of the fluid can be achieved, which greatly improves the fluidity of the high-viscosity fluid. When the medium flows from one vertical channel 101 to the adjacent vertical channel 101, the V-shaped design of the connecting channel 104 optimizes the mixing and diversion effect of the fluid. The angle of the connecting channel 104 gradually changes when the sliding tube 106 moves, making the fluid path more compact, thereby reducing the residence time of the fluid and further improving the reaction efficiency. After the reaction is completed, a cooling system can be added at the medium outlet 103 for rapid cooling. The temperature of the medium can be effectively reduced by the cooling system, avoiding the generation of by-products caused by excessive reaction, while protecting the molecular structure stability of the polymer. The cooled medium is introduced into a filtering device or a centrifugal separation device to remove unreacted raw materials, impurities and by-products to ensure the high purity of the polymer product. In addition, the polymer product after filtration or centrifugation enters the subsequent processing stage. Depending on the specific application requirements, the product can be dried to remove excess solvent or water. Subsequently, the polymer is processed into a granular product that is easy to store and transport through a granulation device. Throughout the process, an online monitoring device is set up to monitor key parameters in real time, including fluid temperature, pressure, flow rate, and molecular weight distribution and particle size of the product, to ensure process stability and product consistency.

[0065] As a further solution of the present invention, the adjusting component includes a lead screw a200 rotatably connected to the vertical channel 101, a sliding frame 201 threadedly connected to the lead screw a200 is connected to one side of the sliding tube 106, a sleeve 202 is connected to one side of the sliding tube 106, and the sleeve 202 is slidably connected to the fixed tube 105, and the fixed tube 105 is connected to the connecting channel 104;

[0066] By providing the sleeve 202, when the medium enters the vertical channel 101 through the medium inlet 102, it will enter the sliding tube 106 and the sleeve 202, and guided by the sleeve 202, the medium can enter the connecting channel 104 through the fixed tube 105. When the volume needs to be adjusted, the lead screw a200 can be rotated, and the sliding frame 201 moves along the lead screw a200, driving the sliding tube 106 to slide relative to the fixed tube 105, thereby adjusting the volume size in the vertical channel 101.

[0067] As a further solution of the present invention, the connecting channel 104 includes a connecting pipe a300 rotatably connected to two adjacent vertical channels 101, a connecting pipe b301 is slidably connected to the connecting pipe a300, a hose 302 is connected between the two connecting pipes b301, and a hose 302 is also connected between the connecting pipe a300 and the fixed pipe 105;

[0068] By setting the sliding structure of the connecting pipe a300 and the connecting pipe b301 and the communication mode of the hose 302, when the volume of the vertical channel 101 needs to be adjusted, the position of the sliding pipe 106 can be adjusted to drive the connecting pipe b301 to slide relative to the connecting pipe a300. The flexible connection of the hose 302 ensures the continuity and sealing of the channel during the adjustment process.

[0069] As a further solution of the present invention, the adjusting component also includes a connecting rod 303 connected to the connecting tube b301, a connecting frame 304 is provided between two adjacent vertical channels 101, the connecting rod 303 is slidably sleeved on the connecting frame 304, a threaded tube 305 is connected to one side of the connecting frame 304, a lead screw b306 is rotatably connected between the two vertical channels 101, a chain transmission mechanism is provided between the lead screw a200 and the lead screw b306, and the lead screw b306 is threadedly connected to the threaded tube 305;

[0070] By setting the structural design of the connecting rod 303, the connecting frame 304, the threaded tube 305 and the lead screw b306, the lead screw b306 can be driven to rotate synchronously through the chain transmission mechanism by rotating the lead screw a200, thereby realizing the synchronous adjustment of the connecting channel 104 between multiple vertical channels 101. The linkage effect of the connecting rod 303 and the connecting tube b301 enables the connecting tube b301 to slide smoothly along the connecting frame 304 during the adjustment process. The threaded connection design of the threaded tube 305 and the lead screw b306 enables the relative position of the connecting tube to be accurately adjusted when the lead screw b306 is rotated, thereby changing the angle and length of the connecting channel 104. The flexible connection of the hose 302 further enhances the adaptability of the system, ensuring the continuity of the channel and the smooth flow of the fluid under different adjustment states. This structure effectively improves the adjustment range and flexibility of the device, while optimizing the fluid path to meet the response requirements of fluids with different viscosities.

[0071] As a further solution of the present invention, the heating part 107 includes a plug-in tube 307 disposed on one side of the vertical channel 101, and a heating wire 308 is disposed in the plug-in tube 307;

[0072] By providing the electric heating wire 308 , when the plug-in tube 307 is plugged into the vertical channel 101 , a uniform and stable heat source can be provided for the medium in the channel to enhance the fluidity of the medium.

[0073] As a further solution of the present invention, a gear a400 is slidably connected to the lead screw b306, and the plug-in cylinder 307 is slidably connected to one side of the vertical channel 101 and is connected to a rack 401 adapted to the gear a400;

[0074] By setting the gear a400, the gear a400 can slide on the lead screw b306. When the sliding tube 106 gradually approaches the fixed tube 105, the position of the gear a400 can be moved while the lead screw a200 and the lead screw b306 rotate. At this time, the gear a400 will also rotate with the lead screw b306. When the gear a400 reaches the rack 401 on the first plug-in tube 307, as the gear a400 rotates, the first plug-in tube 307 can be plugged into the vertical channel 101. As the sliding tube 106 gradually approaches the fixed tube 105, the position of the gear a400 can be moved while the lead screw a200 and the lead screw b306 rotate. At this time, the gear a400 will also rotate with the lead screw b306. When the gear a400 reaches the rack 401 on the first plug-in tube 307, as the gear a400 rotates, the first plug-in tube 307 can be plugged into the vertical channel 101. The space expanded by the movement of the tube 106 gradually increases. When the gear a400 moves the rack 401 on the second plug-in tube 307, the second plug-in tube 307 can be plugged into the vertical channel 101. As the sliding tube 106 moves further and the volume of the vertical channel 101 increases, the gear a400 will mesh with the rack 401 on the second plug-in tube 307 and the subsequent plug-in tubes 307 in turn, so that these plug-in tubes 307 are plugged into the channel one by one, ensuring that the newly added space can obtain heating support in time. The plug-in tube 307 is accurately matched with the change in channel volume, which improves the heating efficiency and the accuracy of temperature control.

[0075] As a further solution of the present invention, a gear b402 is connected to the lead screw b306, a gear c403 meshing with the gear b402 is rotatably connected to one side of the vertical channel 101, a traction rope 404 is wound around the gear c403, a limiting frame 405 is connected to one side of the vertical channel 101, a traction frame 406 slidably connected to the limiting frame 405 is rotatably connected to one side of the gear a400, and one end of the traction rope 404 is connected to the traction frame 406;

[0076] By setting the gear c403, when the lead screw b306 rotates, the gear b402 rotates accordingly and drives the gear c403 meshing therewith to rotate, and the rotation of the gear c403 further pulls the traction rope 404 wound thereon to move. One end of the traction rope 404 is connected to the traction frame 406, and the traction rope 404 can be used to pull the traction frame 406 to move, so that the gear a400 can rotate with the lead screw b306 and the gear a400 can slide along the lead screw b306, so that the heating part 107 can be inserted into the vertical channel 101 in sequence.

[0077] As a further solution of the present invention, the chain transmission mechanism includes a sprocket 407 connected to the lead screw a200, a sprocket 407 is also connected to the lead screw b306, a chain transmission member 408 is provided between the two sprockets 407, and a spring a409 is provided between the gear a400 and an adjacent sprocket 407;

[0078] By setting a chain transmission member 408, when the lead screw a200 rotates, the sprocket 407 on it drives the sprocket 407 on the lead screw b306 to rotate synchronously through the chain, thereby ensuring that the two lead screws move in a coordinated manner. The spring a409 provided can generate potential energy by pulling when the gear a400 slides along the lead screw b306, so that the heating part 107 can be allowed to leave the vertical channel 101 when the volume of the original vertical channel 101 is readjusted later. This design improves the flexibility and automation of the adjustment process while ensuring the adjustment accuracy through the auxiliary effect of the spring a409. The potential energy release of the spring a409 can reduce the external force demand, realize the rapid reset of the volume of the vertical channel 101, adapt to the changing operating conditions, and further improve the adjustment efficiency and operation stability of the equipment.

[0079] As a further solution of the present invention, a plug-in opening 500 adapted to the heating part 107 is provided on one side of the vertical channel 101, a baffle 501 is provided in the plug-in opening 500, a limiting tube 502 is connected to the vertical channel 101, a limiting rod 503 slidably sleeved with the limiting tube 502 is connected to one side of the baffle 501, a top rod 504 is slidably connected to the inner wall of the limiting tube 502, a top groove 505 sleeved with the top rod 504 is provided on the outer wall of the limiting rod 503, the top groove 505 is a semi-spherical groove, one end of the top rod 504 that matches the top groove 505 is semi-spherical, a spring b506 is provided between the top rod 504 and the limiting tube 502, and the baffle 501 is a magnet;

[0080] By setting the push rod 504 and the top groove 505, when the push rod 504 and the top groove 505 cooperate, the spring b506 can give the push rod 504 a force to squeeze the top groove 505, so that a certain friction force is formed between the two. When the heating part 107 is about to extend into the vertical channel 101 through the plug-in opening 500, the heating part 107 can touch the baffle 501 to move the baffle 501. At this time, the force of the spring b506 can be overcome, and the push rod 504 is separated from the top groove 505. In the subsequent gear a400 and When the rack 401 is disengaged and no longer provides the force for the heating part 107 to move, the top rod 504 and the top groove 505 are again set to limit the position of the baffle 501 by the friction force formed, and the plug-in cylinder 307 can be made of iron material. The magnetic attraction between the plug-in cylinder 307 and the baffle 501 can limit the position of the plug-in cylinder 307. Even after the gear a400 leaves the rack 401, the position of the baffle 501 and the plug-in cylinder 307 can be limited to prevent the medium in the vertical channel 101 from overflowing from the plug opening 500. In addition, this design can also effectively prevent the problem of accidental disengagement of the plug-in cylinder 307 due to excessive medium pressure.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microchannel polymerization process, characterized in that: The following steps are involved: Step 1: Mix the monomers, initiator, solvent and other additives in the required proportions to ensure uniform distribution, use a static mixer or oscillator to mix evenly, and prepare to enter the reactor; Step 2: The mixed raw materials are fed into the microchannel reactor by a precisely controlled pump; Step 3: In the microchannel, the raw materials undergo polymerization reaction under the condition of efficient mixing. The temperature control system keeps the temperature in the reactor stable. Through the space of the channel, the reaction rate and the contact efficiency of the reactants are increased to ensure rapid conversion. Step 4: After the polymerization reaction is completed, the temperature of the product is lowered by a cooling system to prevent overreaction. Unreacted substances or impurities need to be removed by filtration or centrifugation to ensure the purity of the product. Step 5: Collect the polymer product and perform post-processing by solvent recovery, drying or granulation; Step 6: Finally, quality inspection and packaging are carried out, ready for delivery or for the next step of production; The microchannel reactor described in step 2 comprises: A reaction housing (100); A plurality of vertical channels (101) are provided in the reaction housing (100), a medium inlet (102) is connected between the leftmost vertical channel (101) and the reaction housing (100), and a medium outlet (103) is connected between the rightmost vertical channel (101) and the reaction housing (100); A connecting channel (104) is provided between two adjacent vertical channels (101), wherein the connecting channel (104) is provided in a V-shape; A fixed tube (105) and a sliding tube (106) are arranged in the vertical channel (101), and the sliding tube (106) is slidably connected to the fixed tube (105); A plurality of heating parts (107) provided on one side of the vertical channel (101) for generating heat; an adjusting component disposed between the vertical channel (101) and the connecting channel (104), used for moving the position of the sliding tube (106) to increase the volume of the medium contained in the vertical channel (101); the adjusting component can adjust the angle of the connecting channel (104) when the sliding tube (106) moves toward the fixed tube (105), thereby increasing the angle between the connecting channel (104) and the vertical channel (101) and shortening the length of the connecting channel (104); The adjusting component can also allow the plurality of heating parts (107) to be inserted into the vertical channel (101) in sequence when the sliding tube (106) is moved.

2. A microchannel polymerization process according to claim 1, characterized in that: The adjusting component comprises a lead screw a (200) rotatably connected to the vertical channel (101); one side of the sliding tube (106) is connected to a sliding frame (201) threadedly connected to the lead screw a (200); one side of the sliding tube (106) is connected to a sleeve (202); the sleeve (202) is slidably connected to the fixed tube (105); and the fixed tube (105) is communicated with the connecting channel (104).

3. A microchannel polymerization process according to claim 2, characterized in that: The connecting channel (104) comprises a connecting pipe a (300) rotatably connected to two adjacent vertical channels (101), a connecting pipe b (301) being slidably connected to the connecting pipe a (300), a hose (302) being connected between the two connecting pipes b (301), and a hose (302) being also connected between the connecting pipe a (300) and the fixed pipe (105).

4. A microchannel polymerization process according to claim 3, characterized in that: The adjusting component also includes a connecting rod (303) connected to the connecting tube b (301), a connecting frame (304) is provided between two adjacent vertical channels (101), the connecting rod (303) is slidably sleeved on the connecting frame (304), a threaded tube (305) is connected to one side of the connecting frame (304), a lead screw b (306) is rotatably connected between the two vertical channels (101), a chain transmission mechanism is provided between the lead screw a (200) and the lead screw b (306), and the lead screw b (306) is threadedly connected to the threaded tube (305).

5. A microchannel polymerization process according to claim 4, characterized in that: The heating portion (107) comprises a plug-in tube (307) arranged at one side of the vertical channel (101), and a heating wire (308) is arranged inside the plug-in tube (307).

6. A microchannel polymerization process according to claim 5, characterized in that: The lead screw b (306) is slidably connected to a gear a (400), and the plug-in cylinder (307) is slidably connected to one side of the vertical channel (101) and is connected to a rack (401) adapted to the gear a (400).

7. A microchannel polymerization process according to claim 6, characterized in that: The lead screw b (306) is connected to a gear b (402); one side of the vertical channel (101) is rotatably connected to a gear c (403) meshing with the gear b (402); a traction rope (404) is wound around the gear c (403); one side of the vertical channel (101) is connected to a limiting frame (405); one side of the gear a (400) is rotatably connected to a traction frame (406) slidably connected to the limiting frame (405); one end of the traction rope (404) is connected to the traction frame (406).

8. A microchannel polymerization process according to claim 6, characterized in that: The chain transmission mechanism comprises a sprocket (407) connected to the lead screw a (200), the lead screw b (306) is also connected to a sprocket (407), a chain transmission member (408) is arranged between the two sprockets (407), and a spring a (409) is arranged between the gear a (400) and an adjacent sprocket (407).

9. A microchannel polymerization process according to claim 1, characterized in that: A plug-in opening (500) adapted to the heating portion (107) is provided on one side of the vertical channel (101), a baffle (501) is provided in the plug-in opening (500), a limiting tube (502) is connected to the vertical channel (101), a limiting rod (503) slidably sleeved with the limiting tube (502) is connected to one side of the baffle (501), a top rod (504) is slidably connected to the inner wall of the limiting tube (502), a top groove (505) sleeved with the top rod (504) is provided on the outer wall of the limiting rod (503), the top groove (505) is semi-spherical, one end of the top rod (504) that matches with the top groove (505) is semi-spherical, a spring b (506) is provided between the top rod (504) and the limiting tube (502), and the baffle (501) is a magnet.

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