Polymerization reaction kettle

Abstract

The utility model discloses a polymerization reaction kettle. The polymerization reaction kettle comprises a reaction kettle body, a control device, a turnover driving mechanism and a supporting mechanism, the overturning driving mechanism can drive the reaction kettle body to overturn along a set rotating shaft; the reaction kettle body comprises a shell, a stirring driving mechanism and a stirring mechanism; in a first state, the overturning driving mechanism drives the reaction kettle body to be in a first posture; and in the second state, the overturning driving mechanism drives the reaction kettle body to be in a second posture. The polymerization reaction kettle provided by the utility model has the excellent surface updating function of a horizontal reaction kettle and the production flexibility of a vertical reaction kettle, and meanwhile, the working efficiency can be improved. In addition, clean discharging can be achieved in the aspect of discharging, and the cleaning problem of an existing horizontal batch polycondensation reaction kettle is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactor equipment, relates to a reactor, and particularly relates to a polymerization reactor. Background Art

[0002] Existing polycondensation reactors usually have two main production processes: batch reaction and continuous reaction. Batch reaction is mostly applicable to small batches of special polymers such as LCP and polyimide, and is also often used for pilot tests of conventional polycondensation polymers such as PET, PTT, and PEF. The advantage of batch reactors is their strong flexibility and a relatively large adjustment range for process parameters such as reaction residence time. Therefore, even if the data collection during the reaction process is restricted by test conditions and is relatively imperfect, the target reaction effect can be achieved by varying the reaction conditions. In the final polycondensation process, a vertical stirred tank is mainly used as the reactor.

[0003] For existing batch vertical reactors, there is a problem of insufficient surface renewal, so it is difficult to effectively remove volatiles in polymer materials at high viscosity, which has an adverse effect on product quality. And this limitation becomes more serious as the reaction is scaled up. In the usual polymerization process, it often shows problems such as the increase in material residence time with the scale-up of the reactor, and the deterioration of parameters such as hue and molecular weight distribution with the reaction scale-up.

[0004] The continuous reaction process is mainly applicable to large-scale polymerization such as PET, etc., and has the advantage of stable production. However, the adjustment range of process parameters such as residence time and temperature is limited. Therefore, before design, it is necessary to collect the thermal properties, flow properties, and reaction kinetics data of reactants, intermediates, and products for strict calculations. In addition, there is a certain amount of waste material with imperfect process during the start-up and shutdown stages to stabilize the process. Therefore, it is not suitable for the production of flexible special polymers. However, in the continuous reaction process, a horizontal reactor is often used as the final reactor, such as a disk reactor and a twin-screw kneading reactor; due to its horizontal configuration, it has a significantly larger material surface area and surface renewal ability for devolatilization of high-viscosity materials compared to vertical tanks, and the advantage of devolatilization is very obvious.

[0005] For continuous horizontal reactors, it is difficult to adapt to the situation of frequent adjustment of special polycondensate formulations and frequent switching of operating conditions. The narrow operating condition envelope of the device often results in poor versatility, which is not conducive to flexible scheduling of production / research tasks while saving device costs. In addition, due to the high requirements for fluid mechanics parameters such as material flow properties in the design stage, since special polymers are often in small batches and have few demands, it is difficult to invest a large amount of energy to collect accurate physical property parameters like general polymers. This often causes great difficulties in the development of the device.

[0006] In addition, there are precedents in previous literature of using intermittent horizontal reactors for polymerization. However, since the reactor is placed in a horizontal position and considering that stirring often requires scraping the wall for surface renewal, its bottom surface can only be a flat surface or a curved surface with a small curvature; otherwise, dead zones are likely to form at the bottom. As a result, when discharging, it is easy for the material to not flow easily from the far end of the reactor to the discharge port, causing the inherent problem of incomplete discharging.

[0007] In previous horizontal batch reactors, the problem of incomplete discharging was mainly improved in the following ways:

[0008] (1) Adding auxiliary mechanisms such as screws extending into the reactor to assist in discharging, but this is likely to result in a complex mechanical structure, and the cleaning and reliability of the auxiliary mechanism itself (whether it can meet the high-temperature, high-vacuum and other working conditions of melt polymerization or special atmospheres such as corrosiveness, increasing the pollution of the liquid-contact shaft seal, residual materials and leak resistance, etc.) often bring additional problems. For example, a discharging screw is used in Chinese Utility Model Patent CN210545093U.

[0009] (2) Adding a stirring module with a directional conveying function such as an inclined spiral ribbon or a scraper to the stirring, for example, in Chinese Utility Model Patent CN203996035U. Through these mechanisms, the material is driven in a specific direction of the reactor during discharging to achieve the purpose of cleaning. However, the setting of such mechanisms will inevitably compromise the self-cleaning and surface renewal characteristics of the stirring, and it is difficult to balance the requirements of reaction and discharging to achieve a perfect balance. Moreover, the stronger the conveying capacity, the greater the height difference of the melt level in the reactor during normal reaction, which is not conducive to the uniform progress of the reaction, and even a material return pipe needs to be added for material return.

[0010] (3) By setting a large opening on the reactor, such as the large opening in Chinese Utility Model Patent CN211514469U, to facilitate the use of manual or auxiliary mechanical devices for cleaning. However, polycondensation, especially melt polycondensation, often uses high temperatures, and the cleaning conditions are extremely harsh. In addition, frequent cleaning also poses great challenges to the sealing life of the reactor cover and the production cycle, and the large opening also brings additional troubles to the stress of the reactor body / reactor cover and the fixed installation of the stirring shaft, etc.

[0011] In view of this, there is an urgent need to design a new polymerization reactor to overcome at least some of the above defects existing in the existing polymerization reactors. Summary of the Utility Model

[0012] The present utility model provides a polymerization reactor, which has both surface renewal function and production flexibility, and can improve work efficiency at the same time.

[0013] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are adopted:

[0014] A polymerization reactor, the polymerization reactor comprising: a reactor body, a control device, a flipping drive mechanism and a support mechanism;

[0015] The reactor body is arranged through the support mechanism; the flipping drive mechanism is connected to the reactor body and can drive the reactor body to flip by a set angle;

[0016] The reactor body includes a shell, a stirring drive mechanism and a stirring mechanism, and the stirring mechanism is arranged inside the shell; the stirring drive mechanism is connected to the stirring mechanism and can drive the stirring mechanism to perform a stirring action;

[0017] The control device is connected to the flipping drive mechanism and can control the flipping action of the flipping drive mechanism; in a first state, the flipping drive mechanism drives the reactor body to be in a first posture; in a second state, the flipping drive mechanism drives the reactor body to be in a second posture;

[0018] The first posture is a horizontal posture or a posture closer to the horizontal posture than the second posture, and the second posture is a vertical posture or a posture closer to the vertical posture than the first posture.

[0019] As an embodiment of the present invention, the first posture is a horizontal posture and the second posture is a vertical posture.

[0020] As an embodiment of the present invention, a discharge port is provided at a second end of the reactor body; the inner wall of the reactor body near the second end includes an inclined surface or a conical surface, so that the material in the reactor body can be discharged through the discharge port under the action of gravity when the reactor body is in a vertical posture. Among them, the second end is the bottom of the reactor in the vertical state.

[0021] As an embodiment of the present invention, the stirring mechanism adopts a structure that is conducive to discharging materials when the reactor body is in a vertical posture, and the stirring unit of the stirring mechanism is provided with holes or inclined surfaces, so that the material can be discharged through the discharge port under the action of gravity when the reactor body is in a vertical posture.

[0022] As an embodiment of the present invention, the flipping drive mechanism can drive the reactor body to flip along a set rotation axis; at least one rotary joint is provided at the rotation axis; the rotary joint can input heat medium into the reactor body, or / and output the heat medium in the reactor body.

[0023] As an embodiment of the present invention, a first rotary joint is provided at the rotation axis, and the first rotary joint is provided with a material inlet and a devolatilization gas phase outlet;

[0024] Alternatively, a first rotary joint and a second rotary joint are provided at the rotary shaft. The first rotary joint is provided with a material inlet and a devolatilization gas outlet, and the second rotary joint is provided with a heat medium inlet and a heat medium outlet;

[0025] Alternatively, a first rotary joint and a second rotary joint are provided at the rotary shaft. The first rotary joint is provided with a material inlet, and the second rotary joint is provided with a devolatilization gas outlet.

[0026] As an embodiment of the present invention, the polymerization reactor further includes a locking mechanism; the locking mechanism is connected to the reactor body to lock the reactor body when the reactor body is working in different postures;

[0027] The polymerization reactor further includes a damping mechanism or / and a braking mechanism; the damping mechanism or / and the braking mechanism is arranged on the reactor body to keep the reactor body stable during the rotation of the reactor body.

[0028] As an embodiment of the present invention, the center of gravity of the reactor body is arranged close to the rotary shaft to reduce the force during rotation.

[0029] The beneficial effects of the present invention are as follows: The polymerization reactor proposed by the present invention combines the excellent surface renewal function of a horizontal reactor and the production flexibility of a vertical reactor, and can improve work efficiency at the same time. In addition, the present invention can achieve cleaner discharging in terms of discharging, overcoming the cleaning problem of the existing horizontal batch polycondensation reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the front view of the polymerization reactor in the vertical posture and the front sectional view in the horizontal state (the view perpendicular to the rotary shaft direction) in an embodiment of the present invention

[0031] Figure 2 is the top view of the polymerization reactor in the horizontal state in an embodiment of the present invention

[0032] Figure 3 is the side view (the view in the rotary shaft direction) of the polymerization reactor in an embodiment of the present invention DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0034] In order to further understand the present invention, the preferred implementation schemes of the present invention will be described below with reference to the embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0035] The description of this part is only for several typical embodiments, and the present utility model is not limited to the scope described in the embodiments. The replacement of some technical features in the embodiments with the same or similar prior art means is also within the scope of description and protection of the present utility model.

[0036] The expression of the steps in each embodiment in the specification is only for convenience of description, and the implementation manner of the present application is not limited by the order of step implementation.

[0037] "Connection" in the specification includes both direct connection and indirect connection.

[0038] The present utility model discloses a polymerization reactor, Figure 1 、 Figure 2 is a schematic structural diagram of the polymerization reactor in an embodiment of the present utility model; please refer to Figure 1 、 Figure 2 , the polymerization reactor includes: a reactor body 1, a control device 4, a turning drive mechanism 3 and a support mechanism 2. The reactor body 1 is arranged through the support mechanism 2; the turning drive mechanism 3 is connected to the reactor body 1 and can drive the reactor body 1 to turn a set angle.

[0039] The reactor body 1 includes a shell 101, a stirring drive mechanism 102 and a stirring mechanism 103, and the stirring mechanism 103 is arranged inside the shell 101; the stirring drive mechanism 102 is connected to the stirring mechanism 103 and can drive the stirring mechanism 103 to perform a stirring action.

[0040] The control device 4 is connected to the turning drive mechanism 3 to control the turning action of the turning drive mechanism 3; in the feeding working mode / polymerization reaction working mode, the control device 4 controls the turning drive mechanism 3 to drive the reactor body 1 to be in a first posture; in the discharging working mode, the control device 4 controls the turning drive mechanism 3 to drive the reactor body 1 to be in a second posture.

[0041] The first posture is a horizontal posture or closer to the horizontal posture than the second posture, and the second posture is a vertical posture or closer to the vertical posture than the first posture. In one embodiment, the first posture can be a horizontal posture (horizontal state), and the second posture can be a vertical posture (i.e., vertical state, and of course it can also be an inclined posture).

[0042] In an embodiment of the present utility model, the control device 4 can adjust the posture of the reactor body according to the working mode of the polymerization reactor. In the feeding working mode / polymerization reaction working mode, the control device drives the reactor body to be in a horizontal posture through the flipping drive mechanism, and realizes surface renewal through the liquid film of horizontal stirring to achieve the purpose of removing volatile components in the reactants. In the discharging working mode, the control device drives the reactor body to be in a vertical posture through the flipping drive mechanism, and discharges materials through the discharging port provided at one end of the reactor body.

[0043] Please continue to refer to Figure 1 、 Figure 2 In an embodiment of the present utility model, a discharging port 104 is provided at the second end of the reactor body 1; the second end of the reactor body 1 can be the bottom in the vertical state of the reactor. The inner wall of the reactor body 1 near the second end includes an inclined surface or a conical surface 105 (the inclination angle can be more than 45°, such as 45°, 60°, etc.), so that the materials in the reactor body 1 can be discharged through the discharging port 104 under the action of gravity when the reactor body 1 is in a vertical posture. A casting head 113 and a bottom valve 114 can also be provided at the second end of the reactor body 1. When the reactor body 1 is in a vertical state, a pelletizing mechanism 8 can be provided at the bottom of the reactor body 1.

[0044] In addition, the stirring mechanism 103 can also adopt a structure that is conducive to discharging materials when the reactor body is in a vertical posture. The stirring unit of the stirring mechanism is provided with holes or inclined surfaces (the inclination angle can be more than 45°, such as 45°, 60°, etc.), so that the materials can be discharged through the discharging port under the action of gravity when the reactor body is in a vertical posture.

[0045] The flipping drive mechanism 3 can drive the reactor body 1 to flip along the rotation axis 106; at least one rotary joint is provided at the rotation axis 106; the rotary joint can input heat medium into the reactor body, or / and output the heat medium in the reactor body.

[0046] In an embodiment, a first rotary joint 107 is provided at the rotation axis, and the first rotary joint 107 is provided with a material inlet and a devolatilization gas phase outlet.

[0047] In another embodiment, a first rotary joint 107 and a second rotary joint 108 are provided at the rotation axis. The first rotary joint is provided with a material inlet and a devolatilization gas phase outlet, and the second rotary joint is provided with a heat medium inlet and a heat medium outlet;

[0048] In yet another embodiment, a first rotary joint 107 and a second rotary joint 108 are provided at the rotary shaft. The first rotary joint 107 is provided with a material inlet, and the second rotary joint 108 is provided with a devolatilization gas outlet.

[0049] In one embodiment, a first rotary joint 107 and a second rotary joint 108 are provided at the rotary shaft; the first rotary joint 107 is provided with a feed pipe 109 and a devolatilization gas outlet pipe 112; the feed pipe 109 adopts an inserted structure. The second rotary joint 108 is used to set the heat medium inlet and outlet pipelines; wherein, the heat medium inlet and outlet pipelines may include a heat medium inlet 110 and a heat medium outlet 111. The reaction kettle body 1 is respectively provided with a first rotary support 117 and a second rotary support 118. The first rotary joint 107 is arranged through the first rotary support 117, and the second rotary joint 108 is arranged through the second rotary support 118.

[0050] Other auxiliary media are connected to the rotating part of the kettle body through flexible pipelines. The drag chain bridge is a relatively preferred but not necessary connection form; auxiliary gas (such as nitrogen) inlets, auxiliary gas outlets, cooling water inlets of the stirring shaft, and cooling water outlets of the stirring shaft can be connected through flexible pipelines (such as drag chain bridges). The stirring motor, the locking mechanism, and sensors (such as temperature sensors) can be connected through flexible electrical connection lines.

[0051] During design, through reasonable position layout, the center of gravity of the rotating part (including the motor and the kettle body) is close to the rotary shaft, reducing the torque load of the rotating mechanism. In one embodiment, the center of gravity of the flipping drive mechanism 3 and the center of gravity of the reaction kettle body 1 are both close to the rotating shaft, reducing the force during rotation. The kettle body can be installed with appropriate counterweights, or components such as motors can be used as counterweights, so that the center of the reaction kettle is as close as possible to the rotation axis of the rotary joint, reducing the force during rotation.

[0052] The polymerization reactor may further include a locking mechanism, a damping mechanism, or / and a braking mechanism. The locking mechanism is connected to the reaction kettle body to lock the reaction kettle body when the reaction kettle body is in different postures (such as horizontal and vertical states) to ensure safety. The damping mechanism or / and the braking mechanism are arranged on the reaction kettle body to keep the reaction kettle body stable during the rotation of the reaction kettle body, avoiding instability caused by the melt flowing to one side. In one embodiment, the locking mechanism includes a first locking mechanism 115 and a second locking mechanism 116. The first locking mechanism 115 locks the reaction kettle body when the reaction kettle body is in a vertical state, and the second locking mechanism 116 locks the reaction kettle body when the reaction kettle body is in a horizontal state.

[0053] The polymerization reactor can cooperate with a vacuum system and a prepolymerization reactor 7. The vacuum system is connected to the reactor body 1 and can evacuate the reactor body 1; of course, the vacuum system can also be connected to the condenser 6, and the vacuum system is connected to the reactor body 1 through the condenser 6. The prepolymerization reactor 7 can be connected to the reactor body 1 through the feeding pipe 109 and can add reaction materials to the reactor body 1 through the feeding pipe; a valve 702 is arranged on the feeding pipe 109, and the feeding to the reactor body 1 can be controlled by controlling the opening and closing of the valve 702.

[0054] The present utility model further discloses a control method for the above polymerization reactor, and the control method includes:

[0055] Set the working mode of the polymerization reactor;

[0056] Adjust the posture of the reactor body according to the set working mode; in the feeding working mode / polymerization reaction working mode, control the flipping drive mechanism to drive the reactor body to be in the first posture; in the discharging working mode, control the flipping drive mechanism to drive the reactor body to be in the second posture; the first posture is a horizontal posture or a posture closer to the horizontal posture than the second posture, and the second posture is a vertical posture or a posture closer to the vertical posture than the first posture.

[0057] In an embodiment of the present utility model, when the working mode is the feeding working mode / polymerization reaction working mode, the control device drives the reactor body to be in a horizontal posture through the flipping drive mechanism, and realizes surface renewal through the liquid film of horizontal stirring to achieve the purpose of removing volatile components in the reaction product;

[0058] When the working mode is the discharging working mode, the control device drives the reactor body to be in a vertical posture through the flipping drive mechanism, and discharges through the discharging port arranged at one end of the reactor body.

[0059] In a use scenario of the present utility model, the cleaning structure of the reactor can adopt an optimized design.

[0060] (1) If the horizontal stirrer is a single-axis stirrer without self-cleaning function, the main body adopts cage-type or ribbon-type stirring, and can also be simplified to plate-type or plate-frame-type stirring as appropriate. For the case of adopting ribbon-type stirring, the ribbon needs to have a large inclination (more than 45° for the ribbon slope in the vertical state) to avoid the formation of a material accumulation area in the vertical state and also reduce the horizontal conveying effect on the melt when placed flat. For the case of adopting a disk reactor, a hollow disk form with more openings is preferably adopted to facilitate the flow of materials.

[0061] (2) For the configuration of a double-axis self-cleaning reactor, when selecting a reactor, a stirring type with fewer planes in the vertical state, such as a T-shaped kneading piece, etc., is preferably adopted as the stirring element.

[0062] (3) When the internal parts of the kettle are in an upright state, avoid the existence of horizontal surfaces that cause material accumulation. The internal parts of the kettle should be set above the melt infiltration range as much as possible. Especially the stirring support and temperature sensor and other mechanisms. Or through a suitable self-cleaning configuration, ensure that the horizontal surface can be effectively scraped and cleaned

[0063] (4) The end face of the reactor is conical or obliquely conical (for working conditions where stirring shafts need to be set at both ends), which is conducive to the natural flow of materials. For the end face facing upward after being vertical, a flat head can also be used.

[0064] (5) The melt discharge pipe is in a vertical state when the reactor is lying horizontally, which is conducive to the full flow and discharge of the melt.

[0065] (6) The reactor body adopts a relatively large aspect ratio (above 3). When the specified loading factor is reached, the reactor body can be turned to a vertical state to form a deeper melt deposit at the bottom, while a larger devolatilization area can be achieved in a horizontal state.

[0066] (7) The installation of scraping elements such as an outer plate frame or an outer spiral belt with a slope greater than 60° (in a vertical state) often helps to drain the melt.

[0067] The material side rotary joint pipeline can be optimized in design.

[0068] (1) The pipe interface does not need to be located on the centerline of the reactor or its extension line, but can be slightly raised to avoid being affected by the liquid phase during stirring. The best position is on the upper half of the stirring falling semicircle.

[0069] (2) From the perspective of avoiding oligomer deposition, an inclined pipe can be used for the part where the pipe is connected to the kettle flange to prevent the material in the kettle from rushing out under the action of stirring and to ensure that the added oligomer flows in more completely.

[0070] (3) The corresponding position of the pipe mouth can reduce the setting of the agitator, and only set up a cleaning mechanism for scraping the wall.

[0071] The heat medium side rotary joint should adopt a heat medium distribution pipe to make the heat medium flow evenly in the reactor and the bottom valve, etc., to ensure uniform heating of the whole

[0072] In summary, the polymerization reactor proposed by the utility model has both the excellent surface renewal function of the horizontal reactor and the production flexibility of the vertical reactor, and can improve the work efficiency. In addition, the utility model can achieve cleaner discharge in terms of material discharge, overcoming the cleaning problem of the existing horizontal intermittent polycondensation reactor.

[0073] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0074] The description and application of the present utility model here are illustrative and are not intended to limit the scope of the present utility model to the above embodiments. The effects or advantages involved in the embodiments may not be reflected in the embodiments due to various factors, and the description of the effects or advantages is not used to limit the embodiments. It is possible to make variations and changes to the embodiments disclosed here, and various components of substitution and equivalence of the embodiments are well known to those of ordinary skill in the art. Those skilled in the art should clearly understand that the present utility model can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and parts without departing from the spirit or essential characteristics of the present utility model. Other variations and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present utility model.

Claims

1. A polymerization reactor, characterized in that: The polymerization reactor comprises: a reactor body, a control device, a turning drive mechanism and a supporting mechanism; The reactor body is arranged by the supporting mechanism; the flipping driving mechanism is connected to the reactor body and can drive the reactor body to flip to a set angle; The reactor body comprises a shell, a stirring drive mechanism and a stirring mechanism, wherein the stirring mechanism is arranged in the shell; the stirring drive mechanism is connected to the stirring mechanism and can drive the stirring mechanism to perform a stirring action; The control device is connected to the flip drive mechanism and can control the flipping action of the flip drive mechanism; in a first state, the flip drive mechanism drives the reactor body to be in a first posture; in a second state, the flip drive mechanism drives the reactor body to be in a second posture; The first posture is a horizontal posture or is closer to a horizontal posture than the second posture, and the second posture is a vertical posture or is closer to a vertical posture than the first posture.

2. The polymerization reactor according to claim 1, characterized in that: The second end of the reactor body is provided with a discharge port; the inner wall of the reactor body near the second end includes an inclined surface or a conical surface, so that when the reactor body is in a vertical position, the material in the reactor body can be discharged through the discharge port under the action of gravity.

3. The polymerization reactor according to claim 1, characterized in that: The stirring mechanism adopts a structure that is convenient for discharging when the reactor body is in a vertical position. The stirring unit of the stirring mechanism is provided with a hole or an inclined surface, so that the material can be discharged through the discharge port under the action of gravity when the reactor body is in a vertical position.

4. The polymerization reactor according to claim 1, characterized in that: The flip driving mechanism can drive the reactor body to flip along a set rotation axis; at least one rotating joint is provided at the rotation axis; the rotating joint can input heat medium into the reactor body, or / and output the heat medium in the reactor body.

5. The polymerization reactor according to claim 4, characterized in that: A first rotary joint is provided at the rotary shaft, and the first rotary joint is provided with a material inlet and a devolatilization gas phase outlet.

6. The polymerization reactor according to claim 4, characterized in that: The rotating shaft is provided with a first rotating joint and a second rotating joint, the first rotating joint is provided with a material inlet and a devolatilization gas phase outlet, and the second rotating joint is provided with a heat medium inlet and a heat medium outlet.

7. The polymerization reactor according to claim 4, characterized in that: The rotating shaft is provided with a first rotating joint and a second rotating joint, the first rotating joint is provided with a material inlet, and the second rotating joint is provided with a devolatilization gas phase outlet.

8. The polymerization reactor according to claim 1, characterized in that: The polymerization reactor further comprises a locking mechanism; the locking mechanism is connected to the reactor body and is used to lock the reactor body when the reactor body is working in different postures.

9. The polymerization reactor according to claim 4, characterized in that: The center of gravity of the flip driving mechanism and the center of gravity of the reactor body are both arranged close to the rotating shaft to reduce the force of the rotation.

Images