An ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam

Abstract

This invention discloses an ammonolysis reactor for the production of α-aminohexanonitrile from caprolactam, comprising a bottom plate, a premixing assembly, and a catalyst assembly. Two legs are mounted on the upper surface of the bottom plate, and a reaction vessel is mounted on the upper ends of the two legs. A feed pipe is installed at the lower end of the reaction vessel. This ammonolysis reactor for the production of α-aminohexanonitrile utilizes a first and a second distributor that revolve and rotate, allowing ammonia and caprolactam to be introduced into the reaction vessel from all directions. This effectively prevents ammonia and caprolactam from concentrating in one location, thus improving the premixing effect. Simultaneously, the rotating third annular plate, overflow plate, and mixing rod further enhance the mixing effect of ammonia and caprolactam in the production of α-aminohexanonitrile, effectively improving the production efficiency and effect of α-aminohexanonitrile.

Description

Technical Field

[0001] This invention relates to the field of ammonolysis reactor technology, specifically to an ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam. Background Technology

[0002] 6-Aminohexanonitrile, a commonly used chemical intermediate, can be used as a raw material for the production of 1,6-hexanediamine through complete hydrogenation. 1,6-Hexanediamine is a key raw material for the production of the polymer Nylon 66. Currently, there are several industrial methods for producing hexanediamine, including the adipic acid method, butadiene method, acrylonitrile method, hexanediol method, and caprolactam method, depending on the raw materials used. Among these, the adipic acid method, butadiene method, and acrylonitrile dimerization method involve the hydrogenation of the intermediate adiponitrile to produce hexanediamine. Currently, almost all large-scale hexanediamine production methods utilize the adiponitrile catalytic hydrogenation method. Additionally, some studies have used caprolactam as a raw material to prepare 6-aminohexanonitrile with ammonia.

[0003] Currently, 6-aminohexanonitrile is prepared by mixing caprolactam gas and ammonia gas to reach the reaction temperature, and then reacting them in a reactor. However, in existing technologies, ammonia and caprolactam are usually concentrated in separate locations after being introduced into the reactor. This is not conducive to the mixing of ammonia and caprolactam, thus affecting the efficiency and effectiveness of 6-aminohexanonitrile production. Furthermore, current reactors use catalyst support structures such as bar grids and stainless steel perforated plates. While these reactor support plates can effectively support the catalyst, they all suffer from low porosity and significant pressure loss as the fluid flows through the reactor. Especially in production processes with high gas flow rates, significant pressure loss means a greater power supply to the system fluid, inevitably leading to high energy consumption. Therefore, we propose an ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam. Summary of the Invention

[0004] The technical problem this invention aims to solve is to overcome the shortcomings of existing methods and provide an ammonolysis reactor for the production of α-aminocaprolactone from caprolactam. In operation, ammonia and caprolactam are introduced into the reaction vessel through an ammonia inlet pipe and a caprolactam feed pipe. Under the action of an electric heating plate, a drive assembly simultaneously rotates a third shaft. This third shaft rotates a second gear, which, in turn, drives a first and third gear to rotate around the second gear while simultaneously rotating on their own axis. Furthermore, the action of a first and second distributor ensures that ammonia and caprolactam can be introduced into the reaction vessel from all directions, effectively preventing them from concentrating in one location and improving the premixing effect. Simultaneously, the rotation of the third shaft drives a mixing rod to rotate. Furthermore, the rotation of the third shaft drives the rotation of the third bevel gear, which in turn drives the rotation of the second bevel gear, which in turn drives the rotation of the first bevel gear, which in turn drives the rotation of the connecting frame, which in turn drives the rotation of the third annular plate. Thus, under the action of the rotating third annular plate, overflow plate, and mixing rod, the effect of mixing ammonia and caprolactam to prepare -aminohexanonitrile is further enhanced, effectively improving the preparation efficiency and effect of -aminohexanonitrile. Moreover, by using a wire mesh structure, good support can be provided while minimizing the pressure generated by the system, thus avoiding the problem of large pressure loss when the fluid flows through the reactor. The three types of ceramic balls can buffer the impact of liquid and gas entering the reactor on the catalyst, protect the catalyst, and improve the distribution of liquid and gas in the reactor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ammonolysis reactor for the production of α-aminohexanonitrile from caprolactam, comprising a bottom plate, a premixing assembly, and a catalyst assembly;

[0006] Two support legs are installed on the upper surface of the base plate, and a reaction vessel is installed at the upper end of the two support legs. A feed pipe is installed at the lower end of the reaction vessel, a drive assembly is installed at the top of the reaction vessel, a premixing assembly is provided at the upper part of the interior of the reaction vessel, and a catalyst assembly is installed in the middle of the reaction vessel.

[0007] The premixing component includes a first annular plate and a first circular groove formed on the top surface of the reaction vessel. A support plate is installed in the middle of the reaction vessel, and a first rotating shaft is rotatably mounted on the support plate. A third rotating shaft is installed at the upper end of the first rotating shaft, and a first circular plate is installed at the upper end of the third rotating shaft. A limiting groove is formed on the outer circumferential surface of the first circular plate, and a limiting plate is installed on the inner surface of the first annular plate. The limiting plate and the limiting groove are rotatably connected. An ammonia inlet pipe and a caprolactam feed pipe are installed on the first annular plate. A first distributor is installed at the lower end of the ammonia inlet pipe. A second distributor is installed at the lower end of the amide feed pipe. Multiple gas outlet pipes are connected to the lower surface of the first distributor, and multiple liquid outlet pipes are connected to the lower surface of the second distributor. A nozzle is installed at the end of each liquid outlet pipe. A first gear is installed on the circumferential surface of the first distributor, and a third gear is installed on the circumferential surface of the second distributor. A second gear is installed on the third rotating shaft. A gear ring is installed on the inner wall of the reaction vessel. The first and third gears are both located between the second gear and the gear ring. The second gear meshes with both the first and third gears. The rings mesh with the first gear and the third gear respectively. Multiple mixing rods are mounted on the third rotating shaft, and multiple through holes are evenly distributed on each mixing rod. A third bevel gear is mounted on the third rotating shaft. A second circular plate is rotatably mounted on the third rotating shaft. An L-shaped bracket is mounted on the lower surface of the second circular plate. A fourth rotating shaft is rotatably mounted on the side of the L-shaped bracket. A second bevel gear is mounted at the end of the fourth rotating shaft. A second rotating shaft is rotatably mounted on the support plate, and a first bevel gear is mounted at the upper end of the second rotating shaft. A communicating groove is formed on the first bevel gear and the second rotating shaft. The first rotating shaft is located in the groove. The first bevel gear and the second bevel gear are meshed together. The second bevel gear and the third bevel gear are meshed together. A connecting frame is installed on the outside of the second rotating shaft. Electric push rods are installed on the upper surfaces of both ends of the connecting frame. A vertical rod is installed on the upper end of the electric push rod. A third annular plate is installed on the upper ends of the two vertical rods. Multiple overflow plates are evenly installed on the third annular plate. A second annular plate is installed on the inner wall of the reaction vessel. The third annular plate is located between the second annular plate and the second circular plate. The drive assembly is connected to the upper end of the third rotating shaft.

[0008] Furthermore, the drive assembly includes a motor bracket mounted on the top surface of the reaction vessel, on which a motor is mounted. The output shaft of the motor is connected to the upper end of the third rotating shaft via a coupling, and the input end of the motor is electrically connected to the output end of an external controller. The external controller controls the motor's operation, which in turn drives the third rotating shaft to rotate, thus electrically completing the rotation of the third rotating shaft.

[0009] Furthermore, the catalyst assembly includes an installation groove inside the reaction vessel, with an annular installation plate embedded within the groove. The annular installation plate contains three layers of wire mesh. Each wire mesh includes multiple transversely mounted reinforcing ribs and longitudinally mounted reinforcing ribs, arranged in a crisscross pattern to form a grid. The grid is filled with catalyst; the uppermost layer of wire mesh is filled with multiple large ceramic balls, the middle layer with multiple medium ceramic balls, and the lowermost layer with multiple small ceramic balls. By employing a wire mesh structure, good support can be provided while minimizing system pressure, thus avoiding significant pressure loss as fluid flows through the reactor. The three types of ceramic balls buffer the impact of liquid and gas entering the reactor on the catalyst, protecting the catalyst and improving the distribution of liquid and gas within the reactor.

[0010] Furthermore, the reactor also includes electric heating plates. Electric heating plates are installed on both sides of the inner wall of the reactor, positioned above the second annular plate. The input end of the electric heating plate is electrically connected to the output end of a temperature controller. The temperature controller controls the operation of the electric heating plates to enhance the efficiency of the preparation of aminohexanonitrile from ammonia and caprolactam.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: In the ammonolysis reactor for the production of α-aminocaprolactone from caprolactam, ammonia and caprolactam are introduced into the reaction vessel through an ammonia inlet pipe and a caprolactam feed pipe. Under the action of an electric heating plate, the drive assembly simultaneously rotates a third shaft, which in turn drives a second gear. This second gear, in turn, drives a first and third gear to revolve around the second gear while simultaneously rotating on its own axis. Furthermore, the first and second distributors ensure that ammonia and caprolactam can be introduced into the reaction vessel from all directions, effectively preventing them from concentrating in one location and thus improving the reaction efficiency. The premixing effect is enhanced by the rotation of the third shaft, which in turn drives the mixing rod to rotate. This rotation, in turn, drives the third bevel gear to rotate, which in turn drives the second bevel gear to rotate, which in turn drives the first bevel gear to rotate. The first bevel gear then drives the connecting frame to rotate, which in turn drives the third annular plate to rotate. Under the combined action of the rotating third annular plate, overflow plate, and mixing rod, the mixing of ammonia and caprolactam to prepare α-aminohexanonitrile is further improved, effectively enhancing the preparation efficiency and effect of α-aminohexanonitrile. The vertical position of the third annular plate can be adjusted by an electric push rod, allowing it to enter the catalyst assembly for reaction after the α-aminohexanonitrile preparation is completed, facilitating subsequent discharge. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the first cross-sectional structure of the present invention;

[0014] Figure 3 This is a schematic diagram of the second cross-sectional structure of the present invention;

[0015] Figure 4 This is a schematic diagram of the premixed component structure of the present invention.

[0016] In the diagram: 1. Base plate, 2. Feed pipe, 3. Support leg, 4. Reaction tank, 5. Ammonia inlet pipe, 6. First annular plate, 7. Motor bracket, 8. Motor, 9. Caprolactam feed pipe, 10. First circular plate, 11. Gas outlet pipe, 12. Electric heating plate, 13. Second annular plate, 14. First bevel gear, 15. First rotating shaft, 16. Longitudinal reinforcing rib, 17. Liquid outlet pipe, 18. Nozzle, 19. Third annular plate, 20. Second bevel gear, 21. Support plate, 22. Transverse reinforcing rib, 23. Annular mounting plate, 24. Vertical rod, 25. Third bevel gear, 26. Second rotating shaft, 27. Mounting groove, 28. Limiting plate, 29. Through hole, 30. Second circular plate, 31. Electric push rod, 32. L-shaped bracket, 33. Connecting frame, 34. Gear ring, 35. Mixing rod, 36. Third rotating shaft, 37. Overflow plate, 38. First gear, 39. First distributor, 40. Second gear, 41. Second distributor, 42. Third gear. Detailed Implementation

[0017] The technical solutions of the embodiments 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. 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.

[0018] Please see Figure 1-4 This embodiment provides a technical solution: an ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam, comprising a bottom plate 1, a premixing assembly, and a catalyst assembly;

[0019] Two support legs 3 are installed on the upper surface of the base plate 1. A reaction vessel 4 is installed at the upper end of the two support legs 3. A feed pipe 2 is installed at the lower end of the reaction vessel 4. A drive assembly is installed at the top of the reaction vessel 4. A premixing assembly is provided at the upper part of the interior of the reaction vessel 4. A catalyst assembly is installed in the middle of the reaction vessel 4.

[0020] The premixing assembly includes a first annular plate 6 and a first circular groove on the top surface of a reaction vessel 4. A support plate 21 is installed in the middle of the reaction vessel 4. A first rotating shaft 15 is rotatably mounted on the support plate 21. A third rotating shaft 36 is installed at the upper end of the first rotating shaft 15. A first circular plate 10 is installed at the upper end of the third rotating shaft 36. A limiting groove is formed on the outer circumferential surface of the first circular plate 10. A limiting plate 28 is installed on the inner surface of the first annular plate 6. The limiting plate 28 and the limiting groove are rotatably connected. An ammonia inlet pipe 5 and a caprolactam feed pipe 9 are installed on the first annular plate 6. A first distributor 39 is installed at the lower end of the ammonia inlet pipe 5. A first distributor 39 is installed at the lower end of the caprolactam feed pipe 9. The reactor 4 is equipped with a second diverter 41. Multiple gas outlet pipes 11 are connected to the lower surface of the first diverter 39, and multiple liquid outlet pipes 17 are connected to the lower surface of the second diverter 41. A nozzle 18 is installed at the end of each liquid outlet pipe 17. A first gear 38 is installed on the circumferential surface of the first diverter 39, and a third gear 42 is installed on the circumferential surface of the second diverter 41. A second gear 40 is installed on the third rotating shaft 36. A gear ring 34 is installed on the inner wall of the reaction vessel 4. The first gear 38 and the third gear 42 are both located between the second gear 40 and the gear ring 34. The second gear 40 meshes with both the first gear 38 and the third gear 42. The gear ring 34... The first gear 38 and the third gear 42 are meshed together. Multiple mixing rods 35 are mounted on the third rotating shaft 36. Multiple through holes 29 are evenly distributed on the mixing rods 35. A third bevel gear 25 is mounted on the third rotating shaft 36. A second circular plate 30 is rotatably mounted on the third rotating shaft 36. An L-shaped bracket 32 ​​is mounted on the lower surface of the second circular plate 30. A fourth rotating shaft is rotatably mounted on the side of the L-shaped bracket 32. A second bevel gear 20 is mounted at the end of the fourth rotating shaft. A second rotating shaft 26 is rotatably mounted on the support plate 21. A first bevel gear 14 is mounted at the upper end of the second rotating shaft 26. A communicating groove is formed between the first bevel gear 14 and the second rotating shaft 26. The rotating shaft 15 is located in the groove. The first bevel gear 14 and the second bevel gear 20 are meshed and connected. The second bevel gear 20 and the third bevel gear 25 are meshed and connected. A connecting frame 33 is installed on the outside of the second rotating shaft 26. Electric push rods 31 are installed on the upper surfaces of both ends of the connecting frame 33. A vertical rod 24 is installed on the upper end of the electric push rod 31. A third annular plate 19 is installed on the upper ends of the two vertical rods 24. Multiple overflow plates 37 are evenly installed on the third annular plate 19. A second annular plate 13 is installed on the inner wall of the reaction vessel 4. The third annular plate 19 is located between the second annular plate 13 and the second circular plate 30. The drive assembly is connected to the upper end of the third rotating shaft 36.

[0021] In operation, ammonia and caprolactam are introduced into the reaction vessel 4 through the ammonia inlet pipe 5 and the caprolactam feed pipe 9. Under the action of the electric heating plate 12, the drive assembly simultaneously rotates the third shaft 36, which in turn rotates the second gear 40. The second gear 40, in turn, rotates around the first gear 38 and the third gear 42 under the action of the gear ring 34. Furthermore, the first distributor 39 and the second distributor 41 ensure that ammonia and caprolactam can be introduced into the reaction vessel 4 from all directions, effectively preventing them from concentrating in one location and improving the premixing effect. Simultaneously, the rotation of the third shaft 36 drives the mixing rod 35... The rotation of the third shaft 36 drives the third bevel gear 25 to rotate, which in turn drives the second bevel gear 20 to rotate, which in turn drives the first bevel gear 14 to rotate, which in turn drives the connecting frame 33 to rotate, which in turn drives the third annular plate 19 to rotate. Thus, under the action of the rotating third annular plate 19, overflow plate 37, and mixing rod 35, the effect of mixing ammonia and caprolactam to prepare 6-aminohexanonitrile is further enhanced, effectively improving the preparation efficiency and effect of 6-aminohexanonitrile. The vertical position of the third annular plate 19 can be adjusted by the electric push rod 31, so that after the preparation of 6-aminohexanonitrile is completed, it can enter the catalyst assembly for reaction, so as to facilitate subsequent discharge.

[0022] The drive assembly includes a motor bracket 7 mounted on the top surface of the reaction vessel 4, on which a motor 8 is mounted. The output shaft of the motor 8 is connected to the upper end of the third rotating shaft 36 via a coupling. The input end of the motor 8 is electrically connected to the output end of an external controller. The external controller controls the operation of the motor 8, which drives the third rotating shaft 36 to rotate, thereby completing the rotation of the third rotating shaft 36 electrically.

[0023] The catalyst assembly includes an installation groove 27 located inside the reaction vessel 4. An annular installation plate 23 is embedded within the installation groove 27. The annular installation plate 23 contains three layers of wire mesh. Each wire mesh includes multiple transversely mounted reinforcing ribs 22 and longitudinally mounted reinforcing ribs 16. These ribs are arranged in a crisscross pattern to form a grid. The grid is filled with catalyst. The uppermost wire mesh is filled with multiple large ceramic balls, the middle wire mesh with multiple medium ceramic balls, and the lowermost wire mesh with multiple small ceramic balls. By employing a wire mesh structure, good support can be provided while minimizing the pressure generated by the system, thus avoiding large pressure losses when fluid flows through the reactor. The three types of ceramic balls buffer the impact of liquid and gas entering the reactor on the catalyst, protecting the catalyst and improving the distribution of liquid and gas within the reactor.

[0024] It also includes electric heating plates 12. Electric heating plates 12 are installed on both sides of the inner wall of the reaction vessel 4. The electric heating plates 12 are located above the second annular plate 13. The input end of the electric heating plate 12 is electrically connected to the output end of the temperature controller. The operation of the electric heating plate 12 is controlled by the temperature controller to improve the efficiency of the preparation of 6-aminohexanonitrile from ammonia and caprolactam.

[0025] The working principle of the ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam provided by this invention is as follows: During operation, ammonia and caprolactam are introduced into the reaction tank 4 through the ammonia inlet pipe 5 and the caprolactam feed pipe 9. Under the action of the electric heating plate 12, the drive assembly simultaneously rotates the third rotating shaft 36. The rotation of the third rotating shaft 36 drives the second gear 40 to rotate. The rotation of the second gear 40, under the action of the gear ring 34, drives the first gear 38 and the third gear 42 to revolve around the second gear 40 while simultaneously rotating on their own axis. Furthermore, under the action of the first distributor 39 and the second distributor 41, ammonia and caprolactam can be introduced into the reaction tank 4 from all directions, effectively preventing ammonia and caprolactam from concentrating in one location after introduction, thereby improving the premixing effect of ammonia and caprolactam. At the same time, the rotation of the third rotating shaft 36 drives the mixing rod 35 to rotate, which in turn drives the third bevel gear 25 to rotate. The third bevel gear 25 drives the second bevel gear 20 to rotate, which in turn drives the first bevel gear 14 to rotate. The first bevel gear 14 drives the connecting frame 33 to rotate, which in turn drives the third annular plate 19 to rotate. Thus, under the action of the rotating third annular plate 19, overflow plate 37, and mixing rod 35, the effect of mixing ammonia and caprolactam to prepare 6-aminohexanonitrile is further improved, effectively enhancing the preparation efficiency and effect of 6-aminohexanonitrile. The vertical position of the third annular plate 19 can be adjusted by the electric push rod 31, so that after the preparation of 6-aminohexanonitrile is completed, it can enter the catalyst assembly for reaction, facilitating subsequent discharge. The operation of the motor 8 is controlled by an external controller, and the operation of the motor 8 drives the rotation of the third rotating shaft 36, thus completing the rotation of the third rotating shaft 36 electrically. By employing a wire mesh structure, good support is provided while minimizing system pressure, thus avoiding significant pressure loss as fluid flows through the reactor. Three types of ceramic balls buffer the impact of entering liquid and gas on the catalyst, protecting the catalyst and improving the distribution of liquid and gas within the reactor. A temperature controller controls the operation of the electric heating plate 12 to enhance the efficiency of the ammonia-caprolactam reaction in preparing 6-aminohexanonitrile.

[0026] It is worth noting that in this embodiment, the core chip of the external controller is an STC microcontroller, specifically the STC15W204S. The motor 8, electric push rod 31, and electric heating plate 12 can be freely configured according to the actual application scenario. The external controller controls the operation of the motor 8 and electric push rod 31, and the temperature controller controls the operation of the electric heating plate 12 using methods commonly used in the prior art.

[0027] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam, characterized in that: Includes base plate (1), premixing assembly and catalyst assembly; Two support legs (3) are installed on the upper surface of the base plate (1). A reaction tank (4) is installed at the upper end of the two support legs (3). A feed pipe (2) is installed at the lower end of the reaction tank (4). A drive assembly is installed at the top of the reaction tank (4). A premixing assembly is provided above the interior of the reaction tank (4). A catalyst assembly is installed in the middle of the reaction tank (4). The premixing component includes a first annular plate (6) and a first circular groove on the top surface of the reaction vessel (4). A support plate (21) is installed in the middle of the reaction vessel (4). A first rotating shaft (15) is rotatably mounted on the support plate (21). A third rotating shaft (36) is installed at the upper end of the first rotating shaft (15). A first circular plate (10) is installed at the upper end of the third rotating shaft (36). A limiting groove is formed on the outer circumferential surface of the first circular plate (10). A limiting plate (28) is installed on the inner surface of the first annular plate (6). The limiting plate (28) and the limiting groove are rotatably connected. An ammonia inlet pipe (5) and a caprolactam feed pipe (9) are installed on the first annular plate (6). A limiting plate (9) is installed at the lower end of the ammonia inlet pipe (5). A first distributor (39) is connected to a second distributor (41) at the lower end of the caprolactam feed pipe (9). Multiple air outlet pipes (11) are connected to the lower surface of the first distributor (39), and multiple liquid outlet pipes (17) are connected to the lower surface of the second distributor (41). A nozzle (18) is installed at the end of each liquid outlet pipe (17). A first gear (38) is installed on the circumferential surface of the first distributor (39), and a third gear (42) is installed on the circumferential surface of the second distributor (41). A second gear (40) is installed on the third rotating shaft (36). A gear ring (34) is installed on the inner wall of the reaction vessel (4). The first gear (38) and the third gear (42) are both located at the second gear (40). Between the gear ring (34) and the gear ring (35), the second gear (40) meshes with the first gear (38) and the third gear (42) respectively. The gear ring (34) meshes with the first gear (38) and the third gear (42) respectively. A plurality of mixing rods (35) are installed on the third rotating shaft (36). A plurality of through holes (29) are evenly opened on the mixing rods (35). A third bevel gear (25) is installed on the third rotating shaft (36). A second circular plate (30) is rotatably installed on the third rotating shaft (36). An L-shaped bracket (32) is installed on the lower surface of the second circular plate (30). A fourth rotating shaft is rotatably installed on the side of the L-shaped bracket (32). A second bevel gear (20) is installed at the end of the fourth rotating shaft. A second rotating shaft (26) is rotatably mounted on a support plate (21). A first bevel gear (14) is mounted on the upper end of the second rotating shaft (26). A groove is formed on the first bevel gear (14) and the second rotating shaft (26). The first rotating shaft (15) is located in the groove. The first bevel gear (14) and the second bevel gear (20) are meshed together. The second bevel gear (20) and the third bevel gear (25) are meshed together. A connecting frame (33) is mounted on the outside of the second rotating shaft (26). Electric push rods (31) are mounted on the upper surfaces of both ends of the connecting frame (33). A vertical rod (24) is mounted on the upper end of the electric push rod (31). A third annular plate (19) is mounted on the upper ends of the two vertical rods (24).Multiple overflow plates (37) are evenly installed on the third annular plate (19). A second annular plate (13) is installed on the inner wall of the reaction vessel (4). The third annular plate (19) is located between the second annular plate (13) and the second circular plate (30). The drive assembly is connected to the upper end of the third rotating shaft (36).

2. The ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam according to claim 1, characterized in that: The drive assembly includes a motor bracket (7) mounted on the top surface of the reaction vessel (4), on which a motor (8) is mounted. The output shaft of the motor (8) is connected to the upper end of a third rotating shaft (36) via a coupling. The input end of the motor (8) is electrically connected to the output end of an external controller.

3. The ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam according to claim 1, characterized in that: The catalyst assembly includes an installation groove (27) inside the reaction vessel (4). An annular installation plate (23) is embedded in the installation groove (27). The annular installation plate (23) has three layers of wire mesh. The wire mesh includes multiple transverse reinforcing ribs (22) installed laterally and longitudinal reinforcing ribs (16) installed longitudinally. The multiple transverse reinforcing ribs (22) and multiple longitudinal reinforcing ribs (16) are arranged in a crisscross pattern to form a grid. The grid is filled with catalyst. The middle wire mesh is filled with multiple medium ceramic balls, and the bottom wire mesh is filled with multiple small ceramic balls.

4. The ammonolysis reactor for the production of 6-aminohexanonitrile from caprolactam according to claim 1, characterized in that: It also includes an electric heating plate (12), which is installed on both sides of the inner wall of the reaction vessel (4). The electric heating plate (12) is located above the second annular plate (13), and the input end of the electric heating plate (12) is electrically connected to the output end of the temperature controller.

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