High-pressure polymerization reactor

Abstract

The application relates to the technical field of reaction kettles, in particular to a high-pressure polymerization kettle, which comprises a kettle body, a jacket is arranged outside the kettle body, a stirring assembly is arranged in the kettle body, the stirring assembly comprises a stirrer and a motor which are connected through a magnetic coupling, a temperature control chamber is arranged between the top of the kettle body and the bottom of the magnetic coupling, and the temperature control chamber is used for isolating the temperature between the kettle body and the magnetic coupling; and a slurry circulating assembly, which comprises heat exchange pipes arranged in the temperature control chamber, the improvement of the application is that the slurry in the kettle body can be controlled in temperature more timely, specifically, a temperature control chamber is arranged at the top of the kettle body, a centrifugal pump in the temperature control chamber can actively draw out the slurry in the kettle body through a suction pipe, the slurry in the kettle body leaves the high-temperature kettle body and enters the heat exchange pipes in the temperature control chamber to exchange heat with low-temperature medium in the temperature control chamber, so that the hysteresis of the temperature control of the kettle body is reduced.

Description

Technical Field

[0001] This invention relates to the field of reactor technology, specifically a high-pressure polymerization reactor. Background Technology

[0002] In a broad sense, a reactor is a vessel used for physical or chemical reactions. Through structural design and parameter configuration, it can achieve the heating, evaporation, cooling, and low-speed mixing functions required by the process. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries. They are pressure vessels used to complete vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation, and other processes. High-pressure reactors are a typical innovation of applying magnetic drive devices to reaction equipment. They fundamentally solve the shaft seal leakage problem that previous packing seals and mechanical seals could not overcome. They produce no leakage or pollution and are the most ideal equipment for high-temperature and high-pressure chemical reactions in China. They are especially superior for chemical reactions involving flammable, explosive, and toxic media.

[0003] High-pressure reactors achieve high sealing performance through magnetic drive. However, magnetic drive is more sensitive to operating temperature. The temperature inside the reactor affects the performance of the inner magnets. As the temperature rises, the magnetic force weakens, and excessively high temperatures can even cause the inner magnets to fail permanently.

[0004] Currently, polymerization reactors mainly control temperature by using a jacket. A fluid medium is introduced into the jacket, allowing it to exchange heat with the slurry inside the reactor, thus achieving temperature control. The temperature of the fluid medium is controlled by external cooling or heating equipment. When the internal temperature of the reactor changes, the fluid medium temperature changes first, and then affects the temperature of the slurry inside the reactor through the jacket. During the polymerization reaction, the temperature of the slurry inside the reactor is affected by the subsequent initiator and the stirring and mixing speed during the reaction. Its temperature change is non-linear and involves some instantaneous changes. Therefore, when the temperature information inside the reactor is transmitted and reaches the execution equipment, the temperature control effect is delayed, making it difficult to achieve real-time temperature control and causing the reaction process to be difficult to maintain the optimal temperature environment. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure polymerization reactor to solve the problems mentioned in the background art.

[0006] The technical solution of this invention is: a high-pressure polymerization reactor, comprising: a reactor body, a jacket outside the reactor body, and a stirring assembly inside the reactor body, the stirring assembly including a stirrer and a motor connected by a magnetic coupling, and further comprising:

[0007] The temperature control chamber is located between the top of the vessel and the bottom of the magnetic coupling to isolate the temperature between the vessel and the magnetic coupling.

[0008] The slurry circulation assembly includes a heat exchange tube, which is located inside the control room. One end of the heat exchange tube is connected to a suction pipe via a centrifugal pump, and the other end of the heat exchange tube is connected to an output pipe. Both the suction pipe and the output pipe are located inside the vessel body.

[0009] The above technical solution allows for the active extraction of slurry from the reactor body via a suction pipe, enabling the slurry to leave the high-temperature reactor body and enter the heat exchange tubes in the temperature control chamber to exchange heat with the low-temperature medium inside the chamber. This temperature control method can be combined with jacketed temperature control to achieve rapid control of the slurry temperature inside the reactor body, thereby reducing the lag in temperature control of the reactor body.

[0010] The present invention is further configured such that a turntable is rotatably disposed between the vessel body and the temperature control chamber, and at least two vertically penetrating flow channels are provided on the turntable, one of which is used to connect the suction pipe and the heat exchange pipe, and the other of which is used to connect the output pipe and the heat exchange pipe.

[0011] A ring tube is fixedly connected to a rotating frame, which is rotatably mounted on the shaft of the agitator. A toothed ring is fixedly mounted on the outside of the ring tube, and a drive gear is meshed with one side of the toothed ring. The drive gear is fixedly mounted on a first transmission shaft, which is rotatably connected to the inner wall of the control chamber and is connected to the shaft of the agitator via a transmission belt.

[0012] The above technical solution enables the heat exchange tubes fixedly connected to the ring pipe to rotate, and the rotating heat exchange tubes have more uniform contact with the fluid medium in the controlled temperature chamber, thereby improving the heat exchange efficiency.

[0013] Furthermore, when the suction pipe and the output pipe rotate, they can play a stirring role inside the vessel. The stirring direction is opposite to the rotation direction of the stirrer. The two work together to further improve the stirring effect.

[0014] Moreover, as the suction and discharge pipes rotate, the positions of suction and discharge are constantly changing, which allows for more even extraction of the slurry from the vessel for circulating temperature control.

[0015] The present invention is further configured such that the centrifugal pump is fixedly connected to the rotating frame, and the input shaft of the centrifugal pump is connected to a pump body driving bevel gear, a fixed bevel gear is meshed with one side of the pump body driving bevel gear, the fixed bevel gear is rotatably sleeved on the outside of the shaft of the stirrer, and the fixed bevel gear is fixedly connected to the inner wall of the control chamber through a bracket;

[0016] The centrifugal pump has an inlet connected to a ring pipe, a suction pipe connected to the lower side of the ring pipe, and an outlet connected to a heat exchange pipe.

[0017] The present invention is further configured such that the suction pipe and the output pipe are symmetrically arranged on both sides of the stirrer, and each side of the suction pipe and the output pipe has an opening at equal intervals.

[0018] The present invention is further configured such that there is not less than one inhalation tube, and each inhalation tube is connected to a ring tube;

[0019] There shall be at least one output tube;

[0020] There is at least one heat exchange tube, which is used to connect the suction tube and the output tube.

[0021] The present invention is further configured such that a feeding assembly is provided inside the controlled temperature chamber, the feeding assembly includes a feeding device, the inlet of the feeding device is connected to a feeding tank through a pipe, and the feeding tank is fixedly installed on the top of the controlled temperature chamber;

[0022] The outlet of the feeding device is connected to a high-pressure air pipe through an extension pipe. The angle between the connection point of the extension pipe and the high-pressure air pipe in the input direction is no greater than 90°. An air inlet control valve and a feeding control valve are provided on the high-pressure air pipe. The air inlet control valve and the feeding control valve are located on both sides of the connection point of the extension pipe and the high-pressure air pipe, respectively.

[0023] The turntable is fitted with a fixed ring, and the flow channel inside the turntable is rotatably connected to the high-pressure air pipe through the fixed ring.

[0024] The present invention is further configured such that an annular groove is formed on the outer wall of the turntable, and the annular groove is connected to the flow channel inside the turntable;

[0025] The fixed ring is fixedly connected to the bottom inner wall of the control room, and an annular flow channel is provided on the inner wall of the fixed ring. The annular flow channel is rotatably connected to the annular groove. A straight flow channel is connected between the outer wall of the fixed ring and the annular flow channel. The annular flow channel is connected to the outlet of the high-pressure gas pipe through the straight flow channel.

[0026] Through the above technical solution, the initiator in the feeding tank can come into contact with the slurry in the heat exchange tube and be affected by the temperature of the medium in the controlled chamber, but not by the temperature of the slurry in the reactor, so that the reaction temperature can be controlled more effectively.

[0027] The present invention is further configured such that the feeding device includes a cylindrical shell, and a screw is rotatably disposed in the middle of the cylindrical shell;

[0028] An inner magnet is rotatably mounted on the inner wall of one end of the cylindrical shell, and a screw is fixedly connected to the inner magnet. An outer magnet is rotatably mounted on the outer wall of one end of the cylindrical shell, and the outer magnet and the inner magnet are magnetically connected.

[0029] The above technical solution enables static sealing of the inner cavity of the cylinder shell, further improving the sealing performance and preventing leakage of materials inside.

[0030] The present invention is further configured such that a transmission gear ring is rotatably sleeved on the outer wall of the cylindrical shell;

[0031] The transmission gear ring is meshed with a first feeding device transmission gear on one side. A second transmission shaft passes through the middle of the first feeding device transmission gear. The second transmission shaft is rotatably installed inside the control room. A second feeding device transmission gear is sleeved on the second transmission shaft. One side of the second feeding device transmission gear is meshed with the gear ring.

[0032] The second feeding device transmission gear is rotatably connected to the second transmission shaft, and a clutch adjuster is provided on the lower side of the second feeding device transmission gear. The clutch adjuster includes an adjustment gear, which is threadedly engaged with the second transmission shaft. A sliding ring is coaxially rotatably connected to the upper side of the adjustment gear. The sliding ring is slidably engaged with the second transmission shaft, and convex teeth are evenly arranged around the sliding ring and the side of the second feeding device transmission gear that is close to each other.

[0033] The valve stem of the feeding control valve is connected to a valve adjusting gear;

[0034] Both the valve adjusting gear and the control gear have a rack meshing with one side, and one end of the rack extends to the outside of the control room and is connected to a telescopic cylinder.

[0035] The above technical solution eliminates the need for an additional motor power for the feeding device, reducing the risk of leakage associated with assembling multiple power units.

[0036] The present invention is further configured such that the inner cavity of the temperature control chamber is not connected to the inner cavity of the vessel body, and an inlet is provided on the top side of one side of the temperature control chamber, and an outlet is provided on the bottom side of one side of the temperature control chamber.

[0037] Through the above technical solutions, the inlet and outlet of the temperature control room can continuously circulate the heat transfer fluid medium, achieving circulation and providing a stable temperature control effect.

[0038] This invention provides a high-pressure polymerization reactor with the following improvements and advantages compared to the prior art:

[0039] Firstly, the improvement of this invention lies in more timely temperature control of the slurry inside the vessel. Specifically, a temperature control chamber is set up at the top of the vessel. The centrifugal pump in the temperature control chamber can actively draw out the slurry inside the vessel through the suction pipe, allowing the slurry to leave the high-temperature vessel and enter the heat exchange tube in the temperature control chamber to exchange heat with the low-temperature medium inside the temperature control chamber. This temperature control method can be combined with the jacketed temperature control method to achieve the effect of quickly controlling the temperature of the slurry inside the vessel, thereby reducing the lag in temperature control of the vessel.

[0040] Secondly, since the polymerization reaction is exothermic and high temperature tends to flow upward, separating the magnetic coupling from the reactor body with a controlled temperature chamber can greatly avoid the negative impact of the high temperature inside the reactor on the inner magnet of the magnetic coupling.

[0041] Thirdly, in this invention, the ring tube acts as a toothed ring support. The toothed ring is driven to rotate by a drive gear, which in turn is driven to rotate by a stirrer via a transmission belt. This allows the heat exchange tubes fixedly connected to the ring tubes to rotate. The rotating heat exchange tubes have more uniform contact with the fluid medium in the controlled temperature chamber, thus improving the heat exchange efficiency.

[0042] Fourthly, in this invention, the suction pipe and the output pipe can rotate together with the turntable and the ring pipe. When the suction pipe and the output pipe rotate, they can play a stirring role in the vessel. The stirring direction is opposite to the rotation direction of the stirrer. The two work together to further improve the stirring effect.

[0043] Fifthly, in this invention, when the suction pipe and the output pipe rotate, the positions of suction and discharge are constantly changing, which can more evenly extract the slurry in the vessel for circulating temperature control.

[0044] Sixth: In this invention, the initiator in the feeding tank can enter the annular groove and then reach the heat exchange tube, instead of directly entering the vessel body. In the heat exchange tube, it is driven by a centrifugal pump and initially mixed with the slurry extracted from the vessel body. The difference is that the initiator in the feeding tank is in contact with the slurry in the heat exchange tube and is affected by the temperature of the medium in the controlled chamber, but not by the temperature of the slurry in the vessel body. The reaction temperature can be controlled more effectively.

[0045] Seventh: In this invention, the screw can feed material by its own rotation, making the conveying volume more accurate. The method of driving the inner magnet to rotate by the outer magnet enables the inner cavity of the cylinder to achieve static sealing, further improving the sealing performance and preventing material leakage.

[0046] Furthermore, the screw in the feeding device can be driven to rotate by the gear ring, eliminating the need for an additional power unit and reducing the risk of leakage caused by assembling multiple power units. Attached Figure Description

[0047] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0048] Figure 1 This is a perspective view of the present invention;

[0049] Figure 2 This is a perspective view of the internal structure of the present invention;

[0050] Figure 3 This is another perspective view of the internal structure of the present invention;

[0051] Figure 4 This is a perspective view of the slurry circulation component of the present invention;

[0052] Figure 5 This is a perspective view of the feeding component of the present invention;

[0053] Figure 6 This is a perspective view of the turntable and fixing ring of the present invention;

[0054] Figure 7 This is a sectional view of the turntable and fixing ring of the present invention;

[0055] Figure 8 This is a diagram showing the internal structure of the feeding device of the present invention;

[0056] Figure 9 This is a front view of the clutch adjuster of the present invention;

[0057] Figure 10 This is a perspective view of the clutch adjuster of the present invention.

[0058] Explanation of reference numerals in the attached drawings: 1. Kettle body; 11. Jacket; 2. Controlled temperature chamber; 3. Stirring assembly; 31. Stirrer; 32. Magnetic coupling; 33. Motor; 4. Slurry circulation assembly; 41. Suction pipe; 42. Output pipe; 43. Turntable; 44. Heat exchange tube; 45. Centrifugal pump; 46. Pump body drive bevel gear; 47. Fixed bevel gear; 48. Transmission belt; 49. First transmission shaft; 410. Drive gear; 411. Ring pipe; 412. Gear ring; 413. Rotating frame; 5. Feeding assembly; 51. Feeding device 5101. Shell; 5102. Screw; 5103. Inner magnet; 5104. Outer magnet; 52. Transmission gear ring; 53. Transmission gear of the first feeding device; 54. Second transmission shaft; 55. High-pressure air pipe; 56. Air inlet control valve; 57. Feeding control valve; 58. Valve adjusting gear; 59. Clutch adjuster; 591. Control gear; 592. Sliding ring; 510. Transmission gear of the second feeding device; 511. Fixed ring; 512. Rack; 513. Telescopic cylinder; 6. Feeding tank. Detailed Implementation

[0059] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1:

[0061] This invention provides, through improvements, a high-pressure polymerization reactor, such as... Figures 1-10As shown, a high-pressure polymerization reactor includes: a reactor body 1, a jacket 11 surrounding the reactor body 1, a circulating heat transfer medium within the jacket 11 for heat exchange within the reactor body 1, and a spiral heating element that can be installed within the jacket 11 for direct heating of the heat transfer medium within the jacket 11; and a stirring assembly 3 within the reactor body 1, the stirring assembly 3 including a stirrer 31 and a motor 33 connected by a magnetic coupling 32, the stirrer 31 consisting of a shaft and stirring blades, the motor 33 driving the shaft of the stirrer 31 to rotate via the magnetic coupling 32; and further including:

[0062] Temperature control chamber 2 is located between the top of the reactor body 1 and the bottom of the magnetic coupling 32. Temperature control chamber 2 is an independently separated space filled with a heat-conducting medium, such as heat-conducting lubricating oil, to isolate the temperature between the reactor body 1 and the magnetic coupling 32. During the polymerization reaction, heat is released, and high temperature tends to flow upward. By using temperature control chamber 2 to separate the magnetic coupling 32 from the reactor body 1, the negative impact of the high temperature inside the reactor body 1 on the inner magnet of the magnetic coupling 32 can be greatly avoided.

[0063] The slurry circulation component 4 includes a heat exchange tube 44, which is located inside the control chamber 2. One end of the heat exchange tube 44 is connected to a suction pipe 41 via a centrifugal pump 45, and the other end of the heat exchange tube 44 is connected to an output pipe 42. Both the suction pipe 41 and the output pipe 42 are located inside the vessel body 1.

[0064] Centrifugal pump 45 can actively extract the slurry in the vessel 1 through suction pipe 41, allowing the slurry in the vessel 1 to leave the high-temperature vessel 1 and enter the heat exchange tube 44 in the temperature control chamber 2 to exchange heat with the low-temperature medium in the temperature control chamber 2. After cooling down, it is sent back to the vessel 1. This temperature control method can be combined with the temperature control method through jacket 11 to achieve the effect of quickly controlling the temperature of the slurry in the vessel 1, thereby reducing the lag in temperature control of the vessel 1.

[0065] like Figure 4 , Figure 6 and Figure 7 As shown, the turntable 43 is rotatably disposed between the vessel body 1 and the control room 2, and at least two vertically penetrating flow channels are provided on the turntable 43. One flow channel is used to connect the suction pipe 41 and the heat exchange pipe 44, while the other flow channel is used to connect the output pipe 42 and the heat exchange pipe 44. The suction pipe 41 and the output pipe 42 can rotate with the turntable 43.

[0066] A ring pipe 411 is fixedly connected to a rotating frame 413, which is fixedly connected to a turntable 43. The rotating frame 413 is rotatably mounted on the shaft of the stirrer 31. A toothed ring 412 is fixedly mounted on the outside of the ring pipe 411. A drive gear 410 is meshed with one side of the toothed ring 412. The drive gear 410 is fixedly mounted on a first transmission shaft 49, which is rotatably connected to the inner wall of the temperature control chamber 2. The first transmission shaft 49 is connected to the shaft of the stirrer 31 via a transmission belt 48. The belt 48 can be a chain belt. Sprockets are set on the shafts of the first drive shaft 49 and the stirrer 31, and the chain belt drives the transmission to prevent slippage during the transmission process. The ring tube 411 acts as a support for the toothed ring 412. The toothed ring 412 is driven to rotate by the drive gear 410, and the drive gear 410 is driven to rotate by the stirrer 31 through the transmission belt 48, so that the heat exchange tube 44 fixedly connected to the ring tube 411 can rotate. The rotating heat exchange tube 44 has more uniform contact with the fluid medium in the controlled temperature chamber 2, thus improving the heat exchange efficiency.

[0067] The suction pipe 41 and the output pipe 42 can rotate together with the turntable 43 and the ring pipe 411. When the suction pipe 41 and the output pipe 42 rotate, they can play a stirring role in the vessel 1. The stirring direction is opposite to the rotation direction of the stirrer 31. The two work together to further improve the stirring effect.

[0068] Moreover, when the suction pipe 41 and the output pipe 42 rotate, the positions of suction and discharge are constantly changing, which can more evenly extract the slurry in the vessel 1 for circulation and temperature control.

[0069] like Figure 4 As shown, the centrifugal pump 45 is fixedly connected to the rotating frame 413, and the input shaft of the centrifugal pump 45 is connected to the pump body drive bevel gear 46. The pump body drive bevel gear 46 and the centrifugal pump 45 are connected through a gearbox to enable the centrifugal pump 45 to have sufficient speed. A fixed bevel gear 47 is meshed with one side of the pump body drive bevel gear 46. The fixed bevel gear 47 is rotatably sleeved on the shaft of the stirrer 31, and the fixed bevel gear 47 is fixedly connected to the inner wall of the temperature control chamber 2 through a bracket. When the rotating frame 413 drives the centrifugal pump 45 to revolve around the stirrer 31, its pump body drive bevel gear 46 can be driven by the fixed bevel gear 47 to rotate passively, so that the centrifugal pump 45 runs automatically during the rotation of the stirrer 31.

[0070] The inlet of the centrifugal pump 45 is connected to a ring pipe 411, the lower side of the ring pipe 411 is connected to a suction pipe 41, and the outlet of the centrifugal pump 45 is connected to a heat exchange pipe 44.

[0071] like Figure 2 and Figure 3As shown, the suction pipe 41 and the output pipe 42 are symmetrically arranged on both sides of the agitator 31, and each side of the suction pipe 41 and the output pipe 42 has an opening at equal intervals. The equal intervals of the openings allow the suction and output positions of the suction pipe 41 and the output pipe 42 to be evenly distributed, making the slurry circulation more uniform.

[0072] Example 2:

[0073] Based on the high-pressure polymerization reactor provided in the first embodiment of this application, the second embodiment of this application proposes another high-pressure polymerization reactor. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0074] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0075] Based on Embodiment 1, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 also has the following features:

[0076] There is at least one inhalation tube 41, and each inhalation tube 41 is connected to a ring tube 411;

[0077] There shall be at least one output tube 42;

[0078] There is at least one heat exchange tube 44, which is used to connect the suction pipe 41 and the output pipe 42. The ring pipe 411 is used to connect at least one suction pipe 41 at the same time. More suction pipes 41, heat exchange tubes 44 and output pipes 42 can increase the slurry flow rate and improve the heat exchange efficiency.

[0079] The difference between this embodiment 2 and embodiment 1 is only that the number of suction pipe 41, output pipe 42 and heat exchange pipe 44 is increased, so as to improve the slurry circulation flow rate and the uniformity of slurry circulation.

[0080] Example 3:

[0081] Based on the high-pressure polymerization reactor provided in the first embodiment of this application, the third embodiment of this application proposes another high-pressure polymerization reactor. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0082] The third embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0083] Based on Embodiment 1, the difference between Embodiment 3 and Embodiment 1 is that Embodiment 3 also has the following features:

[0084] The controlled temperature chamber 2 is equipped with a feeding assembly 5, which includes a feeding device 51. The inlet of the feeding device 51 is connected to a feeding tank 6 through a pipe. The feeding tank 6 is fixedly installed on the top of the controlled temperature chamber 2. The feeding tank 6 can store materials added later in the polymerization reaction, such as initiators.

[0085] The outlet of the feeding device 51 is connected to a high-pressure gas pipe 55 through an extension pipe. The gas blown out by the high-pressure gas pipe 55 is an inert gas. The gas pressure output by the high-pressure gas pipe 55 is not less than the gas pressure inside the vessel body 1. An exhaust valve is installed on the vessel body 1 for pressure control. The angle between the connection between the extension pipe and the input direction of the high-pressure gas pipe 55 is not greater than 90°, so that the high-pressure gas pipe 55 can carry out the material in the extension pipe when blowing air. The high-pressure gas pipe 55 is equipped with an air inlet control valve 56 and a feeding control valve 57. The air inlet control valve 56 can be a solenoid valve. The air inlet control valve 56 and the feeding control valve 57 are located on both sides of the connection between the extension pipe and the high-pressure gas pipe 55, respectively.

[0086] A fixed ring 511 is rotatably sleeved on the outside of the turntable 43, and the flow channel inside the turntable 43 is rotatably connected to the high-pressure air pipe 55 through the fixed ring 511. After the air inlet control valve 56 and the feeding control valve 57 are both opened, the airflow blown out by the high-pressure air pipe 55 can carry out the material sent out by the feeding device 51, so that the material is blown into the heat exchange tube 44 by the gas, and automatic feeding is realized.

[0087] An annular groove is provided on the outer wall of the turntable 43, and the annular groove is connected to the flow channel inside the turntable 43.

[0088] The fixed ring 511 is fixedly connected to the bottom inner wall of the controlled chamber 2, and an annular flow channel is provided on the inner wall of the fixed ring 511. The annular flow channel is rotatably connected to the annular groove. A straight flow channel is connected between the outer wall of the fixed ring 511 and the annular flow channel. The annular flow channel is connected to the outlet of the high-pressure gas pipe 55 through the straight flow channel. The initiator in the feeding tank 6 can enter the annular groove and then reach the heat exchange tube 44, instead of directly entering the vessel 1. In the heat exchange tube 44, it is driven by the centrifugal pump 45 and initially mixed with the slurry extracted from the vessel 1. The difference is that the initiator in the feeding tank 6 is in contact with the slurry in the heat exchange tube 44 and is affected by the temperature of the medium in the controlled chamber 2, but not by the temperature of the slurry in the vessel 1. The reaction temperature can be controlled more effectively.

[0089] The feeding device 51 includes a cylindrical shell 5101, and a screw 5102 is rotatably disposed in the middle of the cylindrical shell 5101;

[0090] An inner magnet 5103 is rotatably mounted on the inner wall of one end of the cylindrical shell 5101, and a screw 5102 is fixedly connected to the inner magnet 5103. An outer magnet 5104 is rotatably mounted on the outer wall of one end of the cylindrical shell 5101, and the outer magnet 5104 and the inner magnet 5103 are magnetically connected. The screw 5102 can feed material by its own rotation, making the conveying volume more accurate. By driving the inner magnet 5103 to rotate through the outer magnet 5104, the inner cavity of the cylindrical shell 5101 can achieve static sealing, further improving the sealing performance and preventing material leakage.

[0091] A transmission gear ring 52 is also rotatably sleeved on the outer wall of the cylindrical shell 5101;

[0092] A first feeding device transmission gear 53 is meshed with one side of the transmission gear ring 52. A second transmission shaft 54 ​​passes through the middle of the first feeding device transmission gear 53. The second transmission shaft 54 ​​is rotatably installed inside the temperature control chamber 2, and a second feeding device transmission gear 510 is sleeved on the second transmission shaft 54. One side of the second feeding device transmission gear 510 is meshed with the gear ring 412. The screw 5102 in the feeding device 51 can be driven to rotate by the gear ring 412 without the need for an additional power device, thus reducing the risk of leakage caused by assembling multiple power devices.

[0093] The second feeding device transmission gear 510 is rotatably connected to the second transmission shaft 54, and a clutch adjuster 59 is provided on the lower side of the second feeding device transmission gear 510. The clutch adjuster 59 includes an adjusting gear 591, which is threadedly engaged with the second transmission shaft 54. A sliding ring 592 is coaxially rotatably connected to the upper side of the adjusting gear 591. The sliding ring 592 is slidably engaged with the second transmission shaft 54, and both the sliding ring 592 and the side of the second feeding device transmission gear 510 close to each other are evenly surrounded by convex teeth. When rotating, it can move up and down along the second drive shaft 54, thereby pushing the sliding ring 592 to approach or separate from the second feeding device drive gear 510. When the sliding ring 592 engages with the second feeding device drive gear 510, the teeth of the two mesh with each other, so that the second feeding device drive gear 510 and the second drive shaft 54 ​​can change from a rotatable connection to a fixed connection, allowing the gear ring 412 to drive the second drive shaft 54 ​​to rotate through the second feeding device drive gear 510. This structure makes the start and stop of the feeding device 51 adjustable.

[0094] The stem of the feeding control valve 57 is connected to a valve adjusting gear 58;

[0095] Both the valve adjusting gear 58 and the regulating gear 591 have a rack 512 meshing with one side. One end of the rack 512 extends to the outside of the control chamber 2 and is connected to a telescopic cylinder 513. The rack 512 is pushed and pulled by the telescopic cylinder 513, which can simultaneously drive the valve adjusting gear 58 and the regulating gear 591 to rotate, achieving synchronous control of the two. When the sliding ring 592 engages with the transmission gear 510 of the second feeding device, the front end of the rack 512 is exactly offset from the regulating gear 591, so that the rotation of the regulating gear 591 will not drive the rack 512 to move in the opposite direction. The power output of the motor 33 is not less than the sum of the rotational resistance of the agitator 31 and the running resistance of the feeding device 51, so as to ensure the stability of the stirring rate during the stirring process.

[0096] The inner cavity of the temperature control chamber 2 is not connected to the inner cavity of the vessel body 1. An inlet is provided on the top side of one side of the temperature control chamber 2, and an outlet is provided on the bottom side of one side of the temperature control chamber 2. The inlet and outlet of the temperature control chamber 2 can continuously circulate the heat transfer fluid medium, enabling circulation.

[0097] Working principle:

[0098] When the stirring assembly 3 inside the vessel 1 is running, the centrifugal pump 45 can actively draw out the slurry in the vessel 1 through the suction pipe 41, allowing the slurry in the vessel 1 to leave the high-temperature vessel 1 and enter the heat exchange tube 44 in the temperature control chamber 2 to exchange heat with the low-temperature medium in the temperature control chamber 2. This temperature control method can be combined with the temperature control method through the jacket 11 to achieve the effect of quickly controlling the temperature of the slurry in the vessel 1, thereby reducing the lag in temperature control of the vessel 1.

[0099] The specific process is as follows: during the rotation of the agitator 31, the shaft of the agitator 31 drives the drive gear 410 to rotate through the transmission belt 48, which in turn drives the gear ring 412 and the ring tube 411 to rotate, so that the heat exchange tube 44 fixedly connected on the ring tube 411 can rotate. The ring tube 411 drives the rotating frame 413 to rotate. When the rotating frame 413 drives the centrifugal pump 45 to revolve around the agitator 31, its pump body drive bevel gear 46 can be driven by the fixed bevel gear 47 and passively rotate, so that the centrifugal pump 45 runs during the rotation of the agitator 31 and actively extracts the slurry in the vessel 1 using the suction pipe 41.

[0100] The rotating heat exchange tube 44 has a more uniform contact with the fluid medium in the controlled chamber 2. At the same time, the suction pipe 41 and the output pipe 42 can rotate together with the turntable 43 and the ring pipe 411. When the suction pipe 41 and the output pipe 42 rotate, they can play a stirring role in the vessel 1. The stirring direction is opposite to the rotation direction of the stirrer 31. The two work together to further improve the stirring effect.

[0101] Moreover, when the suction pipe 41 and the output pipe 42 rotate, the position of suction and discharge of slurry is constantly changing, which can more evenly extract the slurry in the vessel 1 for circulation and temperature control.

Claims

1. A high-pressure polymerization reactor, comprising: The vessel body (1) is provided with a jacket (11) outside the vessel body (1), and a stirring assembly (3) is provided inside the vessel body (1). The stirring assembly (3) includes a stirrer (31) and a motor (33) connected by a magnetic coupling (32). The vessel body (1) is characterized by further comprising: Temperature control chamber (2) is located between the top of the vessel body (1) and the bottom of the magnetic coupling (32) to isolate the temperature between the vessel body (1) and the magnetic coupling (32); The slurry circulation assembly (4) includes a heat exchange tube (44), which is located in the control room (2). One end of the heat exchange tube (44) is connected to a suction pipe (41) via a centrifugal pump (45), and the other end of the heat exchange tube (44) is connected to an output pipe (42). Both the suction pipe (41) and the output pipe (42) are located in the inner cavity of the vessel body (1).

2. The high-pressure polymerization reactor according to claim 1, characterized in that, Also includes: A turntable (43) is rotatably disposed between the vessel body (1) and the control room (2), and at least two vertically connected flow channels are provided on the turntable (43), one of which is used to connect the suction pipe (41) and the heat exchange pipe (44), while the other flow channel is used to connect the output pipe (42) and the heat exchange pipe (44). A ring tube (411) is fixedly connected to a rotating frame (413), which is rotatably mounted on the shaft of the stirrer (31). A toothed ring (412) is fixedly mounted on the outside of the ring tube (411). A drive gear (410) is meshed on one side of the toothed ring (412). The drive gear (410) is fixedly mounted on the first transmission shaft (49). The first transmission shaft (49) is rotatably connected to the inner wall of the temperature control chamber (2), and the first transmission shaft (49) is connected to the shaft of the stirrer (31) via a transmission belt (48).

3. The high-pressure polymerization reactor according to claim 2, characterized in that: The centrifugal pump (45) is fixedly connected to the rotating frame (413), and the input shaft of the centrifugal pump (45) is connected to the pump body drive bevel gear (46). A fixed bevel gear (47) is meshed on one side of the pump body drive bevel gear (46). The fixed bevel gear (47) is rotatably sleeved on the shaft of the stirrer (31), and the fixed bevel gear (47) is fixedly connected to the inner wall of the control room (2) through the bracket. The centrifugal pump (45) has an inlet connected to a ring pipe (411), a suction pipe (41) connected to the lower side of the ring pipe (411), and an outlet connected to a heat exchange pipe (44).

4. The high-pressure polymerization reactor according to claim 2, characterized in that: The suction pipe (41) and the output pipe (42) are symmetrically arranged on both sides of the stirrer (31), and each side of the suction pipe (41) and the output pipe (42) has an opening at equal intervals.

5. A high-pressure polymerization reactor according to claim 2, characterized in that: There is at least one inhalation tube (41), and each inhalation tube (41) is connected to a ring tube (411). The output tube (42) is provided with no less than one; There is at least one heat exchange tube (44), which is used to connect the suction tube (41) and the output tube (42).

6. A high-pressure polymerization reactor according to claim 2, characterized in that: The controlled temperature chamber (2) is equipped with a feeding assembly (5), which includes a feeding device (51). The inlet of the feeding device (51) is connected to a feeding tank (6) through a pipe. The feeding tank (6) is fixedly installed on the top of the controlled temperature chamber (2). The outlet of the feeding device (51) is connected to a high-pressure air pipe (55) through an extension pipe. The angle between the connection point of the extension pipe and the high-pressure air pipe (55) in the input direction is no greater than 90°. An air intake control valve (56) and a feeding control valve (57) are provided on the high-pressure air pipe (55). The air intake control valve (56) and the feeding control valve (57) are located on both sides of the connection point of the extension pipe and the high-pressure air pipe (55). A fixing ring (511) is rotatably sleeved on the outside of the turntable (43), and the flow channel inside the turntable (43) is rotatably connected to the high-pressure air pipe (55) through the fixing ring (511).

7. A high-pressure polymerization reactor according to claim 6, characterized in that: The outer wall of the turntable (43) is provided with an annular groove, which is connected to the flow channel inside the turntable (43); The fixed ring (511) is fixedly connected to the bottom inner wall of the control room (2), and an annular flow channel is provided on the inner wall of the fixed ring (511). The annular flow channel is rotatably connected to the annular groove. A straight flow channel is connected between the outer wall of the fixed ring (511) and the annular flow channel. The annular flow channel is connected to the outlet of the high-pressure gas pipe (55) through the straight flow channel.

8. A high-pressure polymerization reactor according to claim 6, characterized in that: The feeding device (51) includes a cylindrical shell (5101), and a screw (5102) is rotatably disposed in the middle of the cylindrical shell (5101). An inner magnet (5103) is rotatably mounted on the inner wall of one end of the cylindrical shell (5101), and a screw (5102) is fixedly connected to the inner magnet (5103). An outer magnet (5104) is rotatably mounted on the outer wall of one end of the cylindrical shell (5101), and the outer magnet (5104) and the inner magnet (5103) are magnetically connected.

9. A high-pressure polymerization reactor according to claim 8, characterized in that: A transmission gear ring (52) is also rotatably sleeved on the outer wall of the cylindrical shell (5101); The transmission gear ring (52) is meshed with a first feeding device transmission gear (53) on one side. A second transmission shaft (54) is passed through the middle of the first feeding device transmission gear (53). The second transmission shaft (54) is rotatably installed in the control room (2). A second feeding device transmission gear (510) is sleeved on the second transmission shaft (54). One side of the second feeding device transmission gear (510) is meshed with the gear ring (412). The second feeding device transmission gear (510) is rotatably connected to the second transmission shaft (54), and a clutch adjuster (59) is provided on the lower side of the second feeding device transmission gear (510). The clutch adjuster (59) includes an adjustment gear (591), which is threadedly engaged with the second transmission shaft (54). A sliding ring (592) is coaxially rotatably connected to the upper side of the adjustment gear (591). The sliding ring (592) is slidably engaged with the second transmission shaft (54), and the sliding ring (592) and the side of the second feeding device transmission gear (510) that are close to each other are uniformly surrounded by convex teeth. The valve stem of the feeding control valve (57) is connected to a valve adjusting gear (58); One side of the valve adjusting gear (58) and the regulating gear (591) are both meshed with a rack (512), and one end of the rack (512) extends to the outside of the control room (2) and is connected to a telescopic cylinder (513).

10. A high-pressure polymerization reactor according to claim 1, characterized in that: The inner cavity of the control chamber (2) is not connected to the inner cavity of the vessel body (1), and an inlet is provided on the top side of one side of the control chamber (2), and an outlet is provided on the bottom side of one side of the control chamber (2).

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