Butyl acrylate polymerization reaction device and process

Abstract

The invention relates to the technical field of butyl acrylate polymerization reaction, in particular to a butyl acrylate polymerization reaction device and process. The device comprises a reaction cylinder with an upward opening, a hollow rotating shaft is rotatably mounted at the bottom in the reaction cylinder through a bearing, a liquid outlet is formed in the bottom of the circumferential surface of the reaction cylinder, and a diffusion mechanism matched with the rotating shaft and a stirring mechanism matched with the diffusion mechanism are mounted in the reaction cylinder; the circular plates which rotate reversely form a dynamic shearing area during stirring, and the speed difference and the direction difference between the two circular plates enable liquid to generate violent friction and collision, so that sticky kettle residues can be fully diffused to ensure that the kettle residues can be fully contacted with a neutralization solution, and the neutralization reaction effect is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of butyl acrylate polymerization reaction, and in particular to a butyl acrylate polymerization reaction device and process. Background Art

[0002] As an important organic chemical raw material, butyl acrylate is widely used in papermaking and coatings production. It not only improves paper's strength and water resistance, but also offers excellent weathering and aging resistance. In coatings, butyl acrylate is widely used in wall coatings and wood coatings due to its excellent adhesion and transparency, enhancing the coating's toughness and gloss.

[0003] To obtain high-quality butyl acrylate, specific raw materials and additives are typically used. First, acrylic acid dimer, butyl acrylate dimer, and acrylic acid are used as the main raw materials, along with auxiliary materials such as copper salts, phenothiazine, p-toluenesulfonic acid, caustic soda, and p-hydroxymethyl ether. These additives help improve the reaction performance during the polymerization process and optimize the performance of the final product. Next, the mixture is incinerated in an incinerator. After depolymerization, esterification, neutralization, and washing, further purification processes are performed to obtain a pure butyl acrylate product that meets the needs of various industrial applications.

[0004] The kettle residue (i.e., the bottom residue of the kettle) obtained during the depolymerization reaction is relatively viscous, so it needs to be neutralized and washed with water. During the neutralization reaction, in order to accelerate the neutralization and washing reaction rate, the kettle residue and the neutralization solution are often stirred during the reaction.

[0005] For example, patent application CN208824480U discloses a polybutyl acrylate reactor for uniform stirring. A stirring drive element drives the rotation of a stirring mounting plate and its connected stirring plate body. The folding rotating plate structure and the telescopic function of the telescopic connecting rod simultaneously enable the stirring plate body to rotate at different angles, further improving stirring uniformity. Furthermore, the design of this folding component structure allows the agitator to be disassembled for cleaning, reducing material residue on the agitator after use and avoiding the risk of contamination during subsequent use.

[0006] However, the above patent application still has the following defects during use: since the kettle residue produced during the depolymerization reaction is relatively viscous, the traditional folding stirring plate only relies on rotational shear force, but the high-viscosity kettle residue is prone to form a flow dead zone, resulting in uneven distribution of the neutralization solution. Additional stirring time is required to allow the kettle residue and the neutralization solution to fully merge, affecting the reaction process of the kettle residue.

[0007] In addition, the movement trajectory of the stirring plate is single, the kettle residue cannot form an effective material pore structure, and the neutralization water washing solution is difficult to penetrate into the interior of the kettle residue, affecting the contact effect between the kettle residue and the neutralization solution. Summary of the Invention

[0008] In order to solve the above technical problems, the present application provides a butyl acrylate polymerization reaction device and process, which adopts the following technical solutions: In a first aspect, a butyl acrylate polymerization reaction device includes a reaction cylinder with an upward opening, a hollow rotating shaft rotatably mounted on the bottom of the reaction cylinder via a bearing, a liquid outlet opened on the bottom of the circumferential surface of the reaction cylinder, and a diffusion mechanism cooperating with the rotating shaft and a stirring mechanism cooperating with the diffusion mechanism installed inside the reaction cylinder, wherein the diffusion mechanism includes: The circular plates are evenly arranged in multiple groups along the length direction of the rotating shaft. The circular plates in each group are symmetrically distributed along the length direction of the rotating shaft, and the circular plates in each group rotate in opposite directions.

[0009] There are multiple reversing assemblies corresponding to each group of circular plates, and they are used to reverse the direction of each group of circular plates.

[0010] A discharge port is provided on the side of the rotating shaft and between the circular plates.

[0011] The stirring mechanism includes: There are multiple groups of stirring rods, each group of stirring rods is provided with two stirring rods and corresponds one to one with each group of circular plates, each group of stirring rods and the axis of the rotating shaft form a vertical plane, and each group of stirring rods are arranged in parallel; The stirring assembly is arranged inside the reaction cylinder and corresponds to each set of stirring rods one by one.

[0012] Preferably, a reciprocating disc corresponding to the circular plate is provided on the rotating shaft for limited sliding along its length direction. Each group of circular plates away from the bottom of the reaction cylinder is installed on the corresponding reciprocating disc through a bearing, and each group of circular plates close to the bottom of the reaction cylinder is directly installed on the corresponding reciprocating disc, which can drive the circular plates to move reciprocatingly up and down.

[0013] Preferably, a horizontal frame is installed on the reciprocating disc corresponding to each group of circular plates and close to the bottom of the reaction cylinder, and the reversing assembly is installed on the horizontal frame.

[0014] The reversing assembly includes a linkage shaft, which is installed on the end of the horizontal frame away from the rotating shaft through a bearing. The linkage shaft is connected to each group of circular plates close to the bottom of the reaction cylinder through a gear transmission method, and the linkage shaft is connected to each group of circular plates away from the bottom of the reaction cylinder through a belt transmission method.

[0015] Preferably, a stirring frame corresponding to the horizontal frame is rotatably mounted on the side wall of the rotating shaft through a bearing, a plurality of stirring connecting rods are evenly mounted on the circumferential surface of the stirring frame, a conical rack plate corresponding to the stirring frame is mounted on the inner wall of the reaction cylinder through a supporting protrusion, and a bevel gear meshing with the corresponding conical rack plate is mounted on the end of the stirring frame away from the rotating shaft.

[0016] Preferably, an annular plate corresponding to the horizontal frame is installed on the inner wall of the reaction cylinder, and multiple arc-shaped protrusions are evenly arranged on the annular plate along its circumference. An arc-shaped block matching the arc-shaped protrusions on the corresponding annular plate is installed at the bottom of the horizontal frame.

[0017] Preferably, the stirring assembly includes an agitating blade installed on any one stirring rod in each group, for stirring the neutralized solution upward.

[0018] Preferably, baffles for blocking the discharge port are installed on opposite sides of each set of reciprocating discs.

[0019] Preferably, a plurality of through grooves are evenly provided on the circular plate along its circumference.

[0020] Preferably, transition circular tubes are symmetrically installed on the side wall of the reaction cylinder along its height direction, a transition tube is installed between the two transition circular tubes, a rotating shaft is rotatably installed inside the transition tube through a bearing, and a spiral blade is installed on the rotating shaft.

[0021] In a second aspect, a butyl acrylate polymerization process is provided, comprising the following steps: S1: Reaction preparation: Pour the required neutralization solution into the reaction cylinder in advance, and then place the kettle residue into the rotating shaft; S2: Feeding process, which uses external force to squeeze the kettle residue so that the kettle residue enters the neutralization solution through the discharge port; S3: Diffusion treatment, the kettle residue can be squeezed, ground and diffused by the counter-rotating circular plates; S4: Stir and neutralize, and mix the diffused kettle residue and the neutralization solution evenly.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The counter-rotating circular plates of the present invention form a dynamic shear zone during stirring. The speed difference and direction difference between the two circular plates cause intense friction and collision of the liquid, allowing the viscous kettle residue to fully diffuse, ensuring that the kettle residue can fully contact the neutralization solution and ensure the effectiveness of the neutralization reaction.

[0023] 2. The circular plate designed in this invention also reciprocates up and down along the axis of rotation. The counter-rotating dual discs, through axial and radial interaction, propel the liquid through a complex flow path in three dimensions. This flow pattern avoids the laminar dead zones associated with traditional unidirectional mixing, ensuring uniform mixing of materials in a short period of time and reducing local concentration variations.

[0024] 3. Each set of stirring rods designed in the present invention forms two intersecting conical surfaces when rotating circumferentially along the rotating shaft, so that each set of stirring rods can cause the neutralization solution to flip in multiple dimensions during the stirring process, ensuring the contact reaction effect between the neutralization solution and the kettle residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the reaction cylinder of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional installation structure between the reciprocating disc, the circular plate and the rotating shaft of the present invention.

[0028] Figure 4 This invention Figure 3 A partial enlarged view of point A in the middle.

[0029] Figure 5 It is a schematic diagram of the three-dimensional installation structure between the rotating shaft and the baffle, etc. of the present invention.

[0030] Figure 6 It is a schematic diagram of the three-dimensional installation structure between the stirring rod, the rotating shaft and the stirring assembly of the present invention.

[0031] Figure 7 This invention Figure 6 A partial enlarged view of point B in the middle.

[0032] Figure 8 It is a schematic diagram of the three-dimensional installation structure between the transition pipe, transition circular pipe and rotating shaft of the present invention.

[0033] Figure 9 This is a process flow chart of the polymerization reaction of butyl acrylate of the present invention.

[0034] Explanation of the reference numerals: 1. Reaction cylinder; 11. Liquid outlet; 12. Annular plate; 13. Arc-shaped protrusion; 14. Arc-shaped block; 15. Transition circular tube; 16. Transition tube; 17. Rotation shaft; 18. Spiral blade; 2. Rotation shaft; 21. Discharge port; 211. Baffle; 22. Reciprocating disc; 23. Horizontal frame; 24. Stirring frame; 25. Stirring connecting rod; 26. Conical rack plate; 27. Bevel gear; 3. Diffusion mechanism; 31. Circular plate; 311. Through groove; 32. Reversing assembly; 321. Linkage shaft; 4. Stirring mechanism; 41. Stirring rod; 42. Stirring assembly; 421. Agitating blade. DETAILED DESCRIPTION

[0035] The following is combined with Figures 1 to 9 This application is described in further detail.

[0036] The embodiments of the present application disclose a butyl acrylate polymerization reaction device and process, which forms a dynamic shear zone during stirring, causing the liquid to produce violent friction and collision, thereby allowing the viscous kettle residue to fully diffuse, thereby ensuring that the kettle residue can fully contact the neutralization solution and ensure the effectiveness of the neutralization reaction.

[0037] Example 1: Reference Figure 1 as well as Figure 2 A butyl acrylate polymerization reaction device includes a reaction cylinder 1 with an upward opening, a hollow rotating shaft 2 rotatably mounted on the bottom of the reaction cylinder 1 through a bearing, a liquid outlet 11 is opened at the bottom of the circumferential surface of the reaction cylinder 1, and a diffusion mechanism 3 that cooperates with the rotating shaft 2 and a stirring mechanism 4 that cooperates with the diffusion mechanism 3 are installed inside the reaction cylinder 1, wherein the diffusion mechanism 3 includes: The circular plates 31 are evenly arranged in multiple groups along the length direction of the rotating shaft 2 . The circular plates 31 of each group are symmetrically distributed along the length direction of the rotating shaft 2 , and the circular plates 31 of each group rotate in opposite directions.

[0038] There are multiple reversing assemblies 32 , which correspond one-to-one to each group of circular plates 31 , and are used to reverse the direction of each group of circular plates 31 .

[0039] Reference Figure 5 A discharge port 21 is provided on the side of the rotating shaft 2 and between the circular plates 31 .

[0040] The counter-rotating circular plates 31 form a dynamic shear zone during stirring. The speed difference and direction difference between the two circular plates 31 cause the liquid to produce violent friction and collision, allowing the viscous kettle residue to fully diffuse, ensuring that the kettle residue can fully contact the neutralization solution and ensure the effectiveness of the neutralization reaction.

[0041] Reference Figure 3 as well as Figure 4A reciprocating disc 22 corresponding to the circular plate 31 is provided on the rotating shaft 2 in a limited sliding manner along its length direction. Each group of circular plates 31 away from the bottom of the reaction cylinder 1 is installed on the corresponding reciprocating disc 22 through a bearing, and each group of circular plates 31 close to the bottom of the reaction cylinder 1 is directly installed on the corresponding reciprocating disc 22, which can drive the circular plates 31 to move reciprocatingly up and down.

[0042] A horizontal frame 23 is installed on the reciprocating disc 22 corresponding to each set of circular plates 31 and close to the bottom of the reaction cylinder 1, and the reversing assembly 32 is installed on the horizontal frame 23; The reversing assembly 32 includes a linkage shaft 321, which is installed on the end of the horizontal frame 23 away from the rotating shaft 2 through a bearing. The linkage shaft 321 is connected to each group of circular plates 31 close to the bottom of the reaction cylinder 1 through a gear transmission method, and the linkage shaft 321 is connected to each group of circular plates 31 away from the bottom of the reaction cylinder 1 through a belt transmission method.

[0043] During specific operation, the liquid outlet 11 is blocked before the reaction starts, and the neutralization solution is then filled into the reaction cylinder 1 from the top. After the neutralization solution is filled, the kettle residue is poured into the rotating shaft 2, and the kettle residue is squeezed and moves through the hollow structure inside the rotating shaft 2 to the inside of the discharge port 21 and flows from the discharge port 21 to between each group of circular plates 31. It should be noted that there is a certain gap between the two circular plates 31 in opposite directions for the kettle residue to pass through. When each group of circular plates 31 close to the bottom of the reaction cylinder 1 moves upward, it drives each group of circular plates 31 away from the bottom of the reaction cylinder 1 to move upward.

[0044] The rotating shaft 2 is driven to rotate by an external drive motor (which is prior art and therefore not shown in the figure). During the rotation of the rotating shaft 2, the circular plate 31 is driven to rotate in the same direction through the corresponding reciprocating disc 22. During the rotation of the corresponding circular plate 31, the linkage shaft 321 is driven to rotate in the same direction through a gear transmission. During the rotation of the linkage shaft 321, the corresponding circular plate 31 is driven to rotate in the opposite direction on the reciprocating disc 22 through a belt transmission. The circular plate 31 turning in the opposite direction forms a dynamic shear zone in the neutralization solution. The speed difference and direction difference between the two circular plates 31 cause intense friction and collision in the liquid, allowing the viscous kettle residue to fully diffuse, thereby ensuring that the kettle residue can fully contact with the neutralization solution.

[0045] Continue to refer to Figure 3 as well as Figure 4 A plurality of through grooves 311 are uniformly formed on the circular plate 31 along its circumference.

[0046] The inner wall of the reaction cylinder 1 is equipped with an annular plate 12 corresponding to the horizontal frame 23 one by one. The annular plate 12 is evenly provided with multiple arc-shaped protrusions 13 along its circumference. The bottom of the horizontal frame 23 is equipped with an arc-shaped block 14 that matches the arc-shaped protrusion 13 on the corresponding annular plate 12.

[0047] The corresponding reciprocating disc 22 drives the horizontal frame 23 to rotate circumferentially during its rotation, and the horizontal frame 23 drives the arc block 14 to rotate synchronously during its circumferential rotation. When the arc block 14 contacts the arc protrusion 13 and the highest point of the arc protrusion 13 moves, the arc protrusion 13 drives the horizontal frame 23 to move up a distance through the arc block 14. At this time, the horizontal frame 23 drives the corresponding circular plate 31 to move up, and the circular plate 31 opposite to it drives it to move up synchronously during the upward movement of the circular plate 31. When the arc block 14 moves from the highest point of the arc protrusion 13 to the lowest point of the arc protrusion 13, the circular plate 31 moves down due to gravity, and the circular plate 31 in the opposite direction moves down synchronously. When the arc block 14 contacts the arc protrusion 13 again, the above steps are repeated.

[0048] Then, the horizontal frame 23 drives the circular plate 31 to move back and forth up and down through the cooperation between the arc block 14 and the arc protrusion 13. During the up and down reciprocating movement of the circular plate 31, the diffused kettle residue can flow out from the through groove 311 and fully contact the neutralization solution, thereby accelerating the mixing effect of the neutralization solution and the kettle residue. In addition, the through groove 311 can reduce the resistance of the neutralization solution to flow in the vertical direction, play a role in giving way to the neutralization solution, ensure that the neutralization solution can flow smoothly up and down, and further ensure the uniformity of the mixing of the neutralization solution and the kettle residue.

[0049] Reference Figure 5 A baffle 211 for blocking the discharge port 21 is installed on the opposite side of each set of reciprocating discs 22.

[0050] Since the circular plate 31 moves back and forth up and down, the discharge port 21 needs to be long enough. Since the kettle residue must be located between the two circular plates 31 in opposite directions, the baffle 211 blocks the discharge port 21 during the reciprocating movement of the circular plates 31 up and down, so that the portion of the discharge port 21 located between the circular plates 31 in opposite directions is always open, and the remaining portion of the discharge port 21 is always closed to ensure the grinding and diffusion effect of the kettle residue.

[0051] Reference Figure 4 、 Figure 6 as well as Figure 7 In order to ensure that the kettle residue is accumulated near the circular plate 31, the stirring frame 24 and the stirring connecting rod 25 provided by the present invention can stir the kettle residue evenly during the rotation process. Specifically, the side wall of the rotating shaft 2 is rotatably mounted with a stirring frame 24 corresponding to the horizontal frame 23 through a bearing, and a plurality of stirring connecting rods 25 are evenly mounted on the circumferential surface of the stirring frame 24. The inner wall of the reaction cylinder 1 is mounted with a conical rack plate 26 corresponding to the stirring frame 24 through a supporting protrusion, and a bevel gear 27 meshing with the corresponding conical rack plate 26 is mounted on the end of the stirring frame 24 away from the rotating shaft 2.

[0052] The conical rack plate 26 is an annular structure. During operation, the rotating shaft 2 drives the stirring frame 24 to rotate synchronously around it. During the circumferential rotation of the stirring frame 24, the bevel gear 27 and the conical rack plate 26 engage with each other and rotate. During the rotation of the stirring frame 24, the stirring connecting rod 25 is driven to rotate around it. During the circumferential rotation of the stirring connecting rod 25, the kettle residue near the circular plate 31 can be stirred, so that the kettle residue is further fully in contact with the neutralization solution.

[0053] In addition, the stirring rod 25 can stir the neutralization solution during the stirring process so that the neutralization solution can pass through the through groove 311, and then further bring the diffused kettle residue out of the through groove 311, so as to ensure that the kettle residue can flow out from the gap between the circular plates 31 in opposite directions and fully contact and react with the neutralization solution.

[0054] Reference Figure 6 as well as Figure 7 , the stirring mechanism 4 includes: There are multiple groups of stirring rods 41, each group of stirring rods 41 is provided with two and corresponds one to one with each group of circular plates 31. Each group of stirring rods 41 and the axis of the rotating shaft 2 form a vertical plane, and each group of stirring rods 41 is arranged in parallel.

[0055] The stirring assembly 42 is disposed inside the reaction cylinder 1 and corresponds one-to-one to each set of stirring rods 41 .

[0056] The rotating shaft 2 drives the stirring rods 41 to rotate during the rotation process. Each group of stirring rods 41 forms two intersecting conical surfaces when rotating along the circumferential direction of the rotating shaft 2. Therefore, each group of stirring rods 41 can make the neutralization solution flip in multiple dimensions during the stirring process, thereby ensuring the contact reaction effect between the neutralization solution and the kettle residue.

[0057] The stirring assembly 42 includes an agitating blade 421 installed on any one of the stirring rods 41 in each group, and is used to stir the neutralized solution upward.

[0058] During the stirring and rotating process, the agitating blades 421 on the corresponding stirring rod 41 drive the neutralization solution to spirally flip upward during the circumferential rotation, thereby ensuring that the upper and lower layers are evenly mixed during the flipping of the neutralization solution. At the same time, during the flipping of the neutralization solution, the kettle residue between the circular plates 31 can be discharged outward through the through groove 311 to ensure that the kettle residue can be fully contacted with the neutralization solution in a timely manner.

[0059] In order to prevent the residue from sticking to the gears, the surfaces of the gears are sprayed with tungsten carbide, ceramic or Teflon coating to enhance the anti-adhesion and wear resistance and reduce the adhesion of high-viscosity residue. Example 2: Reference Figure 8On the basis of Example 1, transition circular tubes 15 are symmetrically installed on the side wall of the reaction cylinder 1 along its height direction, and a transition tube 16 is installed between the two transition circular tubes 15. A rotating shaft 17 is rotatably installed inside the transition tube 16 through a bearing, and a spiral blade 18 is installed on the rotating shaft 17.

[0060] It should be noted that when filling the neutralization solution, the liquid level does not exceed the upper transition tube 15 to ensure that there is always neutralization solution inside the transition tube 16. During specific operation, the top of the rotating shaft 17 passes through the top of the transition tube 16. When the neutralization reaction starts, the rotating shaft 17 is driven to rotate by the existing drive. During the rotation of the rotating shaft 17, the spiral blade 18 is driven to rotate. During the rotation of the spiral blade 18, the neutralization solution inside the reaction cylinder 1 can be transported from top to bottom, and a circulation system is formed between the transition tube 16, the transition tube 15 and the reaction cylinder 1, and the neutralization solution inside the reaction cylinder 1 forms an up and down convection to ensure the reaction effect of the neutralization solution and the kettle residue.

[0061] In addition, the rotation disturbance of the spiral blades 18 causes the liquid flow to transition from a laminar flow state to a turbulent flow state. The high turbulence characteristics of the turbulent flow can accelerate the mass transfer reaction between the neutralization solution and the kettle residue.

[0062] Finally, refer to Figure 9 The present invention also provides a butyl acrylate polymerization process, which comprises the following steps: S1: Reaction preparation. Before the reaction starts, the liquid outlet 11 is blocked. At this time, the neutralization solution is filled into the reaction cylinder 1 from the top. After the neutralization solution is filled, the kettle residue is poured into the rotating shaft 2.

[0063] S2: feeding process, the extrusion reactor residue moves through the inner hollow structure of the rotating shaft 2 to the inside of the discharge port 21 and flows from the discharge port 21 to between each group of circular plates 31.

[0064] S3: Diffusion treatment: During the rotation of the rotating shaft 2, the circular plate 31 is driven to rotate in the same direction through the corresponding reciprocating disc 22. During the rotation of the corresponding circular plate 31, the linkage shaft 321 is driven to rotate in the same direction through a gear transmission method. During the rotation of the linkage shaft 321, the corresponding circular plate 31 is driven to rotate in the opposite direction on the reciprocating disc 22 through a belt transmission method, and then the circular plate 31 turning to the opposite direction forms a dynamic shear area in the neutralization solution. The speed difference and direction difference between the two circular plates 31 cause the liquid to produce violent friction and collision, so that the viscous kettle residue can be fully diffused.

[0065] S4: Stirring and neutralizing. The rotating shaft 2 rotates, driving the stirring rods 41 to rotate. Each group of stirring rods 41 forms two intersecting conical surfaces when rotating along the circumferential direction of the rotating shaft 2. Therefore, each group of stirring rods 41 can make the neutralized solution flip in multiple dimensions during the stirring process, thereby evenly stirring the diffused kettle residue and the neutralized solution.

[0066] 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0067] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A butyl acrylate polymerization reaction device, comprising a reaction cylinder (1) with an upward opening, a hollow rotating shaft (2) rotatably mounted on the bottom of the reaction cylinder (1) via a bearing, and a liquid outlet (11) formed on the bottom of the circumferential surface of the reaction cylinder (1), characterized in that: A diffusion mechanism (3) that cooperates with the rotating shaft (2) and a stirring mechanism (4) that cooperates with the diffusion mechanism (3) are installed inside the reaction cylinder (1), wherein the diffusion mechanism (3) includes: Multiple groups of circular plates (31) are evenly arranged along the length direction of the rotating shaft (2), and each group of circular plates (31) is symmetrically distributed along the length direction of the rotating shaft (2), and each group of circular plates (31) rotates in opposite directions; A plurality of reversing assemblies (32) are provided and correspond one to one with each set of circular plates (31), and are used to reverse the direction of each set of circular plates (31); A discharge port (21) is provided on the side of the rotating shaft (2) and between the circular plates (31); The stirring mechanism (4) comprises: There are multiple groups of stirring rods (41), each group of stirring rods (41) is provided with two stirring rods (41) and corresponds one to one with each group of circular plates (31), each group of stirring rods (41) and the axis of the rotating shaft (2) form a vertical plane, and each group of stirring rods (41) are arranged in parallel; The stirring assembly (42) is arranged inside the reaction cylinder (1) and corresponds to each set of stirring rods (41) one by one.

2. A butyl acrylate polymerization reaction device according to claim 1, characterized in that: A reciprocating disc (22) corresponding to the circular plate (31) is provided on the rotating shaft (2) in a limited sliding manner along its length direction. Each group of circular plates (31) away from the bottom of the reaction cylinder (1) is mounted on the corresponding reciprocating disc (22) through a bearing, and each group of circular plates (31) close to the bottom of the reaction cylinder (1) is mounted on the corresponding reciprocating disc (22), driving the circular plates (31) to move reciprocatingly up and down.

3. A butyl acrylate polymerization reaction device according to claim 1, characterized in that: A horizontal frame (23) is installed on the reciprocating disc (22) corresponding to each set of circular plates (31) and close to the bottom of the reaction cylinder (1), and the reversing assembly (32) is installed on the horizontal frame (23); The reversing assembly (32) includes a linkage shaft (321) which is mounted on one end of the horizontal frame (23) away from the rotating shaft (2) through a bearing. The linkage shaft (321) is connected to each group of circular plates (31) close to the bottom of the reaction cylinder (1) through a gear transmission mode, and the linkage shaft (321) is connected to each group of circular plates (31) away from the bottom of the reaction cylinder (1) through a belt transmission mode.

4. The butyl acrylate polymerization reaction device according to claim 1, characterized in that: A plurality of through grooves (311) are evenly formed on the circular plate (31) along its circumference.

5. The butyl acrylate polymerization reaction device according to claim 3, characterized in that: A stirring rack (24) corresponding to the horizontal rack (23) is rotatably mounted on the side wall of the rotating shaft (2) via a bearing. A plurality of stirring connecting rods (25) are evenly mounted on the circumferential surface of the stirring rack (24). A conical rack plate (26) corresponding to the stirring rack (24) is mounted on the inner wall of the reaction cylinder (1) via a supporting protrusion. A bevel gear (27) meshing with the corresponding conical rack plate (26) is mounted on one end of the stirring rack (24) away from the rotating shaft (2).

6. A butyl acrylate polymerization reaction device according to claim 5, characterized in that: An annular plate (12) corresponding to the horizontal frame (23) is installed on the inner wall of the reaction cylinder (1), and a plurality of arc-shaped protrusions (13) are evenly arranged on the annular plate (12) along its circumference. An arc-shaped block (14) matching the arc-shaped protrusions (13) on the corresponding annular plate (12) is installed at the bottom of the horizontal frame (23).

7. The butyl acrylate polymerization reaction device according to claim 1, characterized in that: The stirring assembly (42) includes a stirring blade (421) installed on any one stirring rod (41) of each group, and is used to stir the neutralization solution upward.

8. The butyl acrylate polymerization reaction device according to claim 2, characterized in that: A baffle (211) for blocking the discharge port (21) is installed on the opposite side of each set of reciprocating discs (22).

9. The butyl acrylate polymerization reaction device according to claim 1, characterized in that: Transition circular tubes (15) are symmetrically installed on the side wall of the reaction cylinder (1) along its height direction. A transition tube (16) is installed between the two transition circular tubes (15). A rotating shaft (17) is rotatably installed inside the transition tube (16) through a bearing. A spiral blade (18) is installed on the rotating shaft (17).

10. A butyl acrylate polymerization process, comprising a butyl acrylate polymerization device according to any one of claims 1 to 9, characterized in that: The method of use includes the following steps: S1: Reaction preparation: Pour the required neutralization solution into the reaction cylinder (1) in advance, and then place the kettle residue into the rotating shaft (2); S2: feeding process, in which the kettle residue is squeezed by external force so that the kettle residue enters the neutralization solution through the discharge port (21); S3: Diffusion treatment, the kettle residue can be subjected to extrusion, grinding and diffusion treatment by the circular plate (31) rotating in the opposite direction; S4: Stir and neutralize, and mix the diffused kettle residue and the neutralization solution evenly.

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