Light stabilizer synthesis reaction kettle

Abstract

The invention provides a light stabilizer synthesis reaction kettle, which comprises a kettle body, a stirrer is arranged in the kettle body, a jacket is arranged outside the kettle body, the jacket comprises an inner layer and an outer layer, the inner layer is fixedly connected with the kettle body, the outer layer is defined by a fold type flexible wall surface, and the outer layer comprises a plurality of linear grooves and bulges along the axial direction of the reaction kettle. The grooves and the bulges are alternately and uniformly distributed along the circumferential direction of the reaction kettle, a cavity of the jacket is formed between the inner layer and the outer layer, and an inlet pipeline and an outlet pipeline are arranged on the outer layer; the outer layer is provided with a plurality of carrier plates which are uniformly distributed along the circumferential direction of the reaction kettle, each carrier plate is provided with a push-pull seat, the inner layer is provided with a plurality of push-pull mechanisms which are in one-to-one correspondence with the push-pull seats, the push-pull mechanisms are in driving connection with the push-pull seats, the push-pull seats are connected in series through a pressure detection mechanism along the circumferential direction of the reaction kettle, and the pressure detection mechanism is electrically connected with the controller; and a temperature sensor and a pressure sensor are also arranged in the kettle body.

Description

Technical Field

[0001] This invention relates to the field of chemical equipment technology, and in particular to a light stabilizer synthesis reactor. Background Technology

[0002] As a key piece of equipment in fine chemical production, the core function of a light stabilizer synthesis reactor is to provide a controllable reaction environment, enabling various chemical raw materials to react efficiently and safely, ultimately producing the target light stabilizer product. The basic structure of such reactors typically includes a vessel body as the main container, a stirrer for mixing reactants and enhancing heat and mass transfer, and a jacket for the main heat exchange. In traditional designs, the temperature control system relies on real-time monitoring data from temperature sensors inside the vessel, dynamically adjusting the flow rate of the heating or cooling medium within the jacket to maintain a stable reaction temperature. However, the light stabilizer synthesis process often involves multiple critical stages, each with significantly different heat exchange requirements. For example, the initial mixing stage involves raw material mixing and initial chemical reactions, often accompanied by intense exothermic or endothermic phenomena, requiring a rapid-response temperature control mechanism to prevent side reactions; while the main reaction stage is a continuous and stable exothermic process, requiring a large and uniform heat exchange capacity to maintain a constant temperature. The jacket structure of traditional reactors is fixed and cannot be dynamically adjusted according to the reaction stage, resulting in a significant lag in temperature control. Furthermore, the existing structure is difficult to adapt to the heat exchange requirements of different stages at the same time, thus affecting reaction efficiency, product quality, and production safety. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned technical problems by providing a light stabilizer synthesis reactor.

[0004] The technical solution of the present invention is a light stabilizer synthesis reactor, comprising a reactor body, a stirrer provided inside the reactor body, and a jacket provided outside the reactor body. The jacket comprises an inner layer and an outer layer, the inner layer being fixedly connected to the reactor body, the outer layer being formed by a pleated flexible wall surface, the outer layer comprising a plurality of straight grooves and protrusions along the axial direction of the reactor, the grooves and protrusions being alternately and uniformly distributed along the circumference of the reactor, a cavity of the jacket being formed between the inner layer and the outer layer, and an inlet pipe and an outlet pipe provided on the outer layer. The outer layer is provided with several carrier plates evenly distributed along the circumference of the reactor. Each carrier plate is provided with a push-pull seat. The inner layer is provided with several push-pull mechanisms that correspond one-to-one with each push-pull seat. Each push-pull mechanism is driven to connect to the push-pull seat. Each push-pull seat is connected in series by a pressure detection mechanism along the circumference of the reactor. The pressure detection mechanism is electrically connected to the controller. The vessel is also equipped with a temperature sensor and a pressure sensor. The stirrer is driven by a stirring motor. The controller controls the push-pull mechanism to adjust the size of the jacket cavity based on the temperature parameters, pressure parameters, and power parameters of the stirring motor inside the vessel. The pressure detection mechanism feeds back the adjustment result to the controller.

[0005] As one feasible approach, a cavity is provided on the outer layer at the position corresponding to the location of the carrier plate. The depth direction of the cavity is along the radial direction of the reactor. The sidewall of the cavity is a telescopic tube connecting the inner layer and the outer layer. The push-pull mechanism is located at the position enclosed by the telescopic tube.

[0006] As one possible approach, the power source for the push-pull mechanism is an electric actuator.

[0007] As one possible implementation, the telescopic tube is a corrugated pipe.

[0008] As one possible implementation, the pressure detection mechanism includes bent tubes located on both sides of the push-pull seat, the bending direction of the bent tubes being along the circumference of the reactor, and pressure-sensing springs connecting adjacent bent tubes.

[0009] As one feasible approach, the inner layer is made of stainless steel, and the inner layer is welded and fixed to the inner liner of the vessel body. The inner layer is cylindrical in shape and is in close contact with the inner liner of the vessel body.

[0010] As one possible approach, the outer layer is made of composite rubber material and has a thickness of 3-5 mm.

[0011] As one possible implementation, the top of the vessel is provided with a feeding port, which includes a manhole and several material inlets.

[0012] As one possible approach, the bottom of the vessel is provided with a discharge port.

[0013] The advantages of this invention compared to the prior art are that the light stabilizer synthesis reactor dynamically adjusts the push-pull mechanism based on the temperature, pressure and stirring motor power parameters inside the reactor, and adjusts the size of the jacket cavity in real time to match the heat exchange requirements of different reaction stages. It has the advantages of being able to adjust the size of the jacket cavity in real time according to the temperature, pressure and other parameters during the reaction process, optimize the heat exchange efficiency, avoid temperature control lag, and thus improve reaction efficiency, product quality and production safety. Attached Figure Description

[0014] Figure 1 A first structural schematic diagram of a light stabilizer synthesis reactor provided for an embodiment of the present invention; Figure 2A second structural schematic diagram of the light stabilizer synthesis reactor provided for an embodiment of the present invention; Figure 3 A partial cross-sectional view of the light stabilizer synthesis reactor provided for an embodiment of the present invention.

[0015] In the diagram: 1. Kettle body; 2. Agitator; 3. Jacket; 4. Inner layer; 5. Outer layer; 6. Groove; 7. Protrusion; 8. Inlet pipe; 9. Outlet pipe; 10. Carrier plate; 11. Push-pull seat; 12. Push-pull mechanism; 13. Pressure detection mechanism; 14. Sinkhole; 15. Bend; 16. Spring; 17. Feed port; 18. Manhole; 19. Material inlet; 20. Discharge port. Detailed Implementation

[0016] The above and other embodiments and advantages 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.

[0017] In one implementation, such as Figures 1 to 3 As shown.

[0018] The light stabilizer synthesis reactor provided in this embodiment includes a reactor body 1, a stirrer 2 inside the reactor body 1, and a jacket 3 outside the reactor body 1. The jacket 3 includes an inner layer 4 and an outer layer 5. The inner layer 4 is fixedly connected to the reactor body 1. The outer layer 5 is formed by a pleated flexible wall surface. The outer layer 5 includes several linear grooves 6 and protrusions 7 along the axial direction of the reactor. The grooves 6 and protrusions 7 are alternately and evenly distributed along the circumference of the reactor. A cavity is formed between the inner layer 4 and the outer layer 5. An inlet pipe 8 and an outlet pipe 9 are provided on the outer layer 5. Several carrier plates 10 are evenly distributed along the circumference of the reactor on the outer layer 5. A push-pull seat 11 is provided, and a number of push-pull mechanisms 12 corresponding to the push-pull seat 11 are provided on the inner layer 4. The push-pull mechanism 12 is driven to the push-pull seat 11. Each push-pull seat 11 is connected in series by a pressure detection mechanism 13 along the circumference of the reactor. The pressure detection mechanism 13 is electrically connected to the controller. Temperature sensor and pressure sensor are also provided in the reactor body 1. The stirrer 2 is driven by a stirring motor. The controller controls the push-pull mechanism 12 to operate according to the temperature parameters, pressure parameters and power parameters of the stirring motor in the reactor body 1, so as to adjust the cavity size of the jacket 3. The pressure detection mechanism 13 feeds back the adjustment result to the controller.

[0019] In this embodiment, the pleated flexible wall can be understood as a structure with deformable characteristics, whose main function is to change the volume of the cavity of the jacket 3 through its own elastic deformation. Specifically, the wall can be made of rubber or silicone material. For example, in practical applications, high-temperature resistant fluororubber or thermoplastic polyurethane with a certain strength can be selected, mainly to achieve dynamic adjustment of the cavity volume of the jacket 3. The design of the straight grooves 6 and protrusions 7 can be understood as a structure used to enhance the deformation capacity of the flexible wall and disperse stress. It is precisely because of the existence of these straight grooves 6 and protrusions 7 that pleats are formed. The push-pull mechanism 12 can be implemented by a pneumatic drive device or an electric drive device. For example, a cylinder can be used to push the push-pull seat 11 to move, or a precise thrust can be applied by an electric rod, mainly to achieve precise control of the position of the outer layer 5. The pressure detection mechanism 13 can be understood as a device for monitoring pressure changes during the push-pull process. It can be implemented by setting multiple pressure sensors in series, or by using a strain gauge-based detection method, mainly to achieve real-time monitoring of the pressure state during the adjustment process.

[0020] In this embodiment, to dynamically adjust the heat exchange characteristics according to the reaction stage, a pleated flexible wall surface is introduced in combination with the push-pull mechanism 12, realizing the dynamic adjustment of the cavity size of the jacket 3. This allows for flexible changes in the heat exchange area and medium capacity according to the heat exchange requirements of different reaction stages. When a chemical reaction occurs inside the vessel 1, temperature and pressure sensors monitor the temperature and pressure parameters inside the vessel 1 in real time. The stirrer 2 is driven by a stirring motor, and its power parameters are also collected. The controller automatically determines the reaction stage based on these parameters. For example, the initial mixing stage involves raw material mixing and initial chemical reactions, often accompanied by intense exothermic or endothermic phenomena, with relatively rapid temperature changes and large fluctuations in stirring motor power. The main reaction stage, on the other hand, is a continuous and stable exothermic process, with relatively slow temperature changes and stable and higher stirring motor power. These are automatically determined by the controller, which simultaneously controls the push-pull mechanism 12 to adjust the cavity size of the jacket 3, thereby optimizing the heat exchange efficiency. When the controller determines that it is the initial mixing stage, it outputs a signal to pull the push-pull mechanism 12 inward to compress the outer layer 5, reducing the cavity size. Combined with increasing the pump speed, rapid heat exchange can be achieved. When the controller determines that the main reaction stage has begun, it outputs a signal to push and pull the outer layer 5 outward via the push-pull mechanism 12, increasing the cavity and achieving a large heat exchange. During this process, the specially constructed pressure detection mechanism 13 feeds back the adjustment result to the controller to form a closed-loop control.

[0021] Compared to traditional methods that rely on flow rate regulation, the regulation method in this embodiment effectively reduces the lag in temperature control and improves the reactor's adaptability to various heat exchange requirements. This satisfies the heat exchange needs at different stages of the light stabilizer synthesis process.

[0022] In one implementation, such as Figure 2 As shown.

[0023] The light stabilizer synthesis reactor provided in this embodiment has a cavity 14 on the outer layer 5 corresponding to the position where the carrier plate 10 is set. The depth direction of the cavity 14 is along the radial direction of the reactor. The side wall of the cavity 14 is a telescopic tube connecting the inner layer 4 and the outer layer 5. The push-pull mechanism 12 is located at the position enclosed by the telescopic tube.

[0024] In this embodiment, the recessed cavity 14 refers to a recessed area of ​​a certain depth created in the outer layer 5. The purpose of the recessed cavity 14 is to optimize the layout of the action point of the push-pull mechanism 12, ensuring that the push-pull action can be accurately transmitted to the target area. A telescopic tube connects the inner layer 4 and the outer layer 5 where the recessed cavity 14 is created. The telescopic tube is a flexible connection structure with axial telescopic capability, which can be implemented using a metal corrugated pipe or an elastic rubber tube, etc. Its main function is to provide uniform deformation support during the push-pull process and to provide space for the push-pull mechanism 12 to be installed in the inner layer 4. The push-pull mechanism 12 is a power device capable of generating linear reciprocating motion, which is arranged in the area enclosed by the telescopic tube. Its purpose is to evenly distribute the push-pull force to the outer layer 5 through the telescopic tube.

[0025] In this embodiment, the recessed cavity 14 is positioned so that the point of action of the push-pull mechanism 12 matches the position of the carrier plate 10, avoiding the problem of inaccurate force transmission caused by positional misalignment. The depth direction of the recessed cavity 14 is designed radially along the reactor, ensuring that the direction of action of the push-pull mechanism 12 is completely consistent with the adjustment direction of the size of the jacket 3 cavity. This structural design effectively eliminates the interference of non-radial force components. As a key component connecting the inner layer 4 and the outer layer 5, the telescopic tube can uniformly absorb radial displacement during the push-pull process, preventing local stress concentration or irregular deformation of the wrinkled outer layer 5 wall. The push-pull mechanism 12 is arranged at the position enclosed by the telescopic tube, uniformly transmitting the thrust or pull force to the outer layer 5 through the telescopic tube, driving each push-pull seat 11 to move synchronously, thereby ensuring the accuracy of the data fed back by the pressure detection mechanism 13.

[0026] In one embodiment, the power source for the push-pull mechanism 12 of the light stabilizer synthesis reactor is an electric push rod.

[0027] In this embodiment, the electric actuator is a common driving device that directly converts electrical signals into linear displacement. Its purpose is to provide rapid response and high-precision linear motion to meet the real-time and accuracy requirements of the jacket 3 cavity adjustment. As the power source of the push-pull mechanism 12, the electric actuator can quickly convert electrical signals into precise mechanical displacement after the controller receives feedback signals from the temperature sensor, pressure sensor, and stirring motor power parameters inside the vessel 1. In this way, the push-pull seat 11 can adjust its position instantly under the feedback of the circumferential pressure detection mechanism 13, thereby changing the size of the jacket 3 cavity.

[0028] In one embodiment, the telescopic tube of the light stabilizer synthesis reactor is a corrugated pipe.

[0029] In this embodiment, the corrugated pipe refers to a common type of flexible pipe, which can be made of metal or composite materials to meet different temperature and pressure resistance requirements. The corrugated pipe is designed to provide excellent expansion and contraction capabilities in specific directions through its unique corrugated structure, thereby avoiding localized deformation or fatigue fracture caused by stress concentration. As the core component of the telescopic pipe, the corrugated pipe plays a crucial role in the movement of the outer layer 5 driven by the push-pull mechanism 12. The flexible corrugated design of the corrugated pipe enables it to maintain a stable linear response under compression or tension, significantly improving the accuracy of adjusting the size of the jacket 3 cavity. Furthermore, the elastic modulus characteristics of the corrugated pipe allow it to smoothly respond to the push-pull force of the push-pull mechanism 12, avoiding the fatigue damage problems that easily occur in traditional telescopic pipes during repeated movements. The connection method between the corrugated pipe and the inner layer 4 and outer layer 5 enhances the stability of the overall structure, allowing for more timely dynamic adjustments to the size of the jacket 3 cavity and reducing temperature control lag.

[0030] In one implementation, such as Figure 2 As shown.

[0031] The light stabilizer synthesis reactor provided in this embodiment has a pressure detection mechanism 13 including bent tubes 15 on both sides of the push-pull seat 11. The bending direction of the bent tubes 15 is along the circumference of the reactor, and a pressure-sensing spring 16 is connected between adjacent bent tubes 15.

[0032] In this embodiment, the bend 15 refers to a pipe component with an arc-shaped structure, which can be made of metal or polymer elastic material, with the purpose of enhancing the sensitivity to forces in a specific direction through the bending design.

[0033] The bending spring 16, as an elastic connector, is both part of the transmission chain and the sensor itself. It connects all the push-pull seats 11 in the circumferential direction, directly participating in the force transmission and balancing process. When the radius of the jacket 3 changes, the circumferential distance between the push-pull seats 11 inevitably changes. This geometric change directly and uniquely translates into the tensile or compressive deformation of the bending spring 16. Its deformation is strongly correlated with and calculable to the change in the circumference of the jacket 3. This is fundamentally different from traditional pressure sensors that only measure force without participating in the main force transmission or deformation. More importantly, because all the push-pull seats 11 are connected in series through the bending spring 16, the forces at each point can be passively coordinated to a certain extent, avoiding stress concentration at one point and relaxation at another, thus promoting the synchronization of the push-pull mechanisms 12. The bent tube 15 is located on both sides of the push-pull seats 11, allowing pressure changes to directly act on the detection mechanism, ensuring that the force state of the push-pull seats 11 is accurately captured. Adjacent bends 15 are connected by pressure-sensitive springs 16, forming a continuous pressure transmission chain that enables the controller to obtain real-time, sensitive pressure data streams. This design aligns with the circumferential pressure distribution characteristics of the reactor, ensuring that pressure detection is synchronized with the movement of the push-pull seat 11, fundamentally reducing the response delay and measurement blind spots that may exist in traditional discrete sensors.

[0034] In one embodiment, the inner layer 4 of the light stabilizer synthesis reactor is made of stainless steel. The inner layer 4 is welded and fixed to the inner liner of the reactor body 1. The inner layer 4 is cylindrical in shape and is in close contact with the inner liner of the reactor body 1.

[0035] In one embodiment, the outer layer 5 of the light stabilizer synthesis reactor is made of composite rubber material, and the thickness of the outer layer 5 is 3-5 mm.

[0036] In this embodiment, the outer layer 5 can be made of a composite rubber material with high elastic modulus and chemical corrosion resistance, aiming to ensure that the outer layer 5 has excellent flexibility and fatigue resistance during repeated deformation. The thickness is set at 3-5mm to achieve a balance between structural strength and deformation flexibility. By selecting a composite rubber material as the outer layer 5, the jacket 3 wall surface is given good elastic recovery capability, enabling it to quickly and uniformly complete wrinkling deformation under the drive of the push-pull mechanism 12, avoiding the problem of delayed adjustment action caused by excessive material rigidity, thus achieving immediate response to temperature fluctuations inside the vessel. Simultaneously, the chemical corrosion resistance of the composite rubber effectively isolates the material from the erosion of the heat or cold medium, significantly reducing the risk of fatigue damage during repeated deformation. Regarding maintaining structural strength, the lower limit of 3mm prevents perforation or tearing caused by excessive thinness, ensuring that the outer layer 5 maintains its sealing integrity under pressure fluctuations; regarding ensuring deformation flexibility, the upper limit of 5mm avoids increased deformation resistance caused by excessive thickness, allowing the push-pull mechanism 12 to achieve precise fine-tuning of the cavity size with low energy consumption.

[0037] In one embodiment, the top of the reactor body 1 of the light stabilizer synthesis reactor is provided with a feeding port 17, which includes a manhole 18 and several material inlets 19.

[0038] In this embodiment, the feeding port 17 refers to the opening structure for adding raw materials into the vessel body 1, which can be implemented in the form of a single opening or a combination of multiple openings. In practical applications, the feeding port 17 is located at the top of the vessel body 1, utilizing gravity to allow the raw materials to fall naturally, thereby reducing the complexity of mechanical conveying and improving operational efficiency. The manhole 18 is designed with a large opening, facilitating the input of solid raw materials and internal maintenance operations, aiming to enhance the operational flexibility and safety of the equipment. The material port 19 refers to an independently set pipe interface, which can adopt pipe structures of different diameters or shapes to meet the precise addition requirements of various raw materials, ensuring dynamic control of the raw material ratio and addition sequence at each stage. By placing the feeding port 17 at the top of the vessel body 1, combined with the synergistic design of the manhole 18 and the material port 19, efficient addition and uniform mixing of raw materials are achieved. The presence of the manhole 18 not only solves the problem of difficult input of solid raw materials, but also provides convenient conditions for cleaning and maintenance of the internal parts of the equipment. The independent placement of multiple material inlets 19 allows for precise control of the addition of different raw materials through their respective pipelines, avoiding premature contact or reaction between raw materials and effectively reducing the risk of side reactions caused by localized high concentrations. Furthermore, the top-mounted design of the feed inlet 17 enables the raw materials to quickly enter the stirring zone, significantly improving the dispersion effect in the initial mixing stage and thus reducing the possibility of localized temperature fluctuations. This design is particularly suitable for scenarios requiring frequent addition of solid components during the synthesis of light stabilizers, while simultaneously meeting the stringent requirements for temperature and concentration stability in the main reaction stage, thereby improving overall reaction efficiency.

[0039] In one embodiment, the bottom of the reactor body 1 of the light stabilizer synthesis reactor is provided with a discharge port 20.

[0040] In this embodiment, the discharge port 20 refers to an opening structure located at the bottom of the reactor body 1, which can be connected to an external pipeline by means of flange connection, threaded connection, or welding. Its purpose is to allow the material after the reaction to naturally collect and flow out smoothly through gravity, thereby effectively avoiding material residue inside the reactor body 1. In the light stabilizer synthesis reaction, the material often exhibits viscous characteristics; placing the discharge port 20 at the bottom of the reactor body 1 ensures complete emptying of the reactor interior. This design is specifically tailored to the structural characteristics of the reactor. By optimizing the discharge path, it not only reduces cleaning difficulties and potential contamination risks caused by material retention but also enhances the operational reliability and maintenance convenience of the equipment in continuous production. Furthermore, this design, in conjunction with the inner layer 4, jacket 3, and stirrer 2 of the reactor body 1, jointly supports the efficient and stable operation of the light stabilizer synthesis process. For example, under the action of the stirrer 2, the material can more evenly collect at the bottom, thereby further improving discharge efficiency and reducing the risk of batch-to-batch cross-contamination.

[0041] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A light stabilizer synthesis reaction kettle, characterized in that, The utility model relates to a reaction kettle, which comprises a kettle body, a stirrer arranged in the kettle body, a jacket arranged outside the kettle body, an inner layer and an outer layer of the jacket, the inner layer being fixedly connected with the kettle body, the outer layer being formed by a corrugated flexible wall, the outer layer comprising a plurality of linear grooves and protrusions along the axial direction of the reaction kettle, the grooves and the protrusions being alternately and uniformly distributed along the circumferential direction of the reaction kettle, a cavity of the jacket being formed between the inner layer and the outer layer, and inlet and outlet pipelines being arranged on the outer layer. A plurality of carrier plates are uniformly distributed along the circumferential direction of the reaction kettle and arranged on the outer layer, a push-pull seat is arranged on each carrier plate, a plurality of push-pull mechanisms corresponding to the push-pull seats are arranged on the inner layer, the push-pull mechanisms are drivingly connected with the push-pull seats, and the push-pull seats are connected in series through a pressure detection mechanism along the circumferential direction of the reaction kettle, the pressure detection mechanism being electrically connected with a controller. A temperature sensor and a pressure sensor are arranged in the kettle body, the stirrer is driven by a stirring motor, the controller controls the push-pull mechanisms to act according to the temperature parameter, the pressure parameter in the kettle body and the power parameter of the stirring motor, so as to adjust the size of the cavity of the jacket, and the pressure detection mechanism feeds back the adjustment result to the controller.

2. The light stabilizer synthesis reactor according to claim 1, characterized in that, A sink cavity is arranged on the outer layer at a position corresponding to the carrier plate, the depth direction of the sink cavity is along the radial direction of the reaction kettle, the side wall of the sink cavity is an expansion pipe connecting the inner layer and the outer layer, and the push-pull mechanism is located in the position enclosed by the expansion pipe.

3. The light stabilizer synthesis reactor according to claim 2, characterized in that, The power source of the push-pull mechanism is an electric push rod.

4. The light stabilizer synthesis reactor of claim 2, wherein, The expansion pipe is a bellows.

5. The light stabilizer synthesis reactor of claim 1, wherein, The pressure detection mechanism comprises elbow pipes arranged on both sides of the push-pull seat, the bending direction of the elbow pipes is along the circumferential direction of the reaction kettle, and a bending spring with pressure sensing is arranged between adjacent elbow pipes.

6. The light stabilizer synthesis reactor of claim 1, wherein, The inner layer is made of stainless steel, the inner layer and the inner liner of the kettle body are fixedly connected by welding, the shape of the inner layer is cylindrical, and the inner layer is in close contact with the inner liner of the kettle body.

7. The light stabilizer synthesis reactor of claim 1, wherein, The outer layer is made of composite rubber, and the thickness of the outer layer is 3-5 mm.

8. The light stabilizer synthesis reactor of claim 1, wherein, A feeding port is arranged at the top of the kettle body, and the feeding port comprises a manhole and a plurality of material pipe openings.

9. The light stabilizer synthesis reactor of claim 1, wherein, A discharging port is arranged at the bottom of the kettle body.

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