Ammonolysis reactor for preparing 6-aminocapronitrile from caprolactam

Abstract

The invention discloses an ammonolysis reactor for preparing aminocapronitrile from caprolactam. The ammonolysis reactor comprises a bottom plate, a premixing assembly and a catalyst assembly, two supporting legs are mounted on the upper surface of the bottom plate, a reaction tank is mounted at the upper ends of the two supporting legs, and a discharging pipe is mounted at the lower end of the reaction tank. According to the ammonolysis reactor for preparing-aminocapronitrile from caprolactam, through revolution and autorotation of the first flow divider and the second flow divider, ammonia gas and caprolactam can be introduced into the reaction tank in all directions under the action of the first flow divider and the second flow divider, so that the ammonia gas and the caprolactam are effectively prevented from being concentrated at one position after being introduced, and the production efficiency is improved. And meanwhile, under the action of a rotating third annular plate, an overflow plate and a mixing rod, the effect of preparing-aminocapronitrile through mixing of the ammonia gas and the caprolactam is further improved, and the preparation efficiency and the preparation effect of the-aminocapronitrile are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of ammonolysis reactors, in particular to an ammonolysis reactor for preparing 6-aminocapronitrile from caprolactam. Background Art

[0002] As a commonly used chemical intermediate, 6-aminocapronitrile can be used as a raw material for the production of 1,6-hexanediamine through complete hydrogenation reaction, and 1,6-hexanediamine is the main raw material for the production of polymer nylon 66. At present, there are many industrial methods for producing hexanediamine, including adipic acid method, butadiene method, acrylonitrile method, hexanediol method and caprolactam method according to the different raw materials used. Among them, the adipic acid method, butadiene method and acrylonitrile dimerization method are to generate hexanediamine through hydrogenation of the intermediate adiponitrile. At present, almost all large-scale production methods of hexanediamine are catalytic hydrogenation of adiponitrile. In addition, there are studies that use caprolactam as a raw material and ammonia to prepare 6-aminocapronitrile.

[0003] At present, after the reaction temperature is reached by caprolactam gas and ammonia mixing, enter the reactor and react to prepare 6-aminocapronitrile, but, in the prior art, ammonia and caprolactam are usually concentrated in a position respectively after passing into the reactor, which is unfavorable for the mixed preparation of ammonia and caprolactam, thereby affecting the effect and efficiency of preparing 6-aminocapronitrile, in addition, the catalyst support structure used by the reactor at present has the forms such as bar grid and stainless steel orifice plate. The support plate of the above reactor can preferably support catalyst, but all there is a low aperture ratio, and the problem of large pressure loss when the fluid flows through the reactor. In the production technique with particularly large gas flow, large pressure loss means that it is necessary to provide larger power to the system fluid, which will inevitably produce larger energy consumption, for this reason, we propose a kind of ammonia solution reactor for caprolactam to prepare 6-aminocapronitrile. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an ammonolysis reactor for preparing aminocapronitrile from caprolactam. When in use, ammonia and caprolactam are introduced into the interior of a reaction tank through an ammonia inlet pipe and a caprolactam feed pipe. Under the action of an electric heating plate, at the same time, the third rotating shaft is driven to rotate by the driving component. The rotation of the third rotating shaft drives the second gear to rotate. The rotation of the second gear drives the first gear and the third gear to revolve around the second gear while rotating at the same time under the action of a gear ring. Moreover, under the action of a first splitter and a second splitter, ammonia and caprolactam can be introduced into the reaction tank in all directions, effectively avoiding the ammonia and caprolactam from being concentrated in one position after being introduced, so as to improve the premixing effect of ammonia and caprolactam. At the same time, the rotation of the third rotating shaft drives the mixing rod to rotate. And the rotation of the third shaft drives the third bevel gear to rotate, the rotation of the third bevel gear drives the second bevel gear to rotate, the rotation of the second bevel gear drives the first bevel gear to rotate, the rotation of the first bevel gear drives the connecting frame to rotate, and the rotation of the connecting frame drives the third annular plate to rotate, so that under the action of the rotating third annular plate, the overflow plate and the mixing rod, the effect of mixing ammonia and caprolactam to prepare aminocapronitrile is further improved, and the preparation efficiency and preparation effect of aminocapronitrile are effectively improved. In addition, by adopting a wire mesh structure, the pressure generated by the system can be minimized while providing good support, so as to avoid the problem of large pressure loss when the fluid flows through the reactor. The three types of porcelain 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 object, the present invention provides the following technical solution: an ammonolysis reactor for preparing aminocapronitrile from caprolactam, comprising a bottom plate, a premixing assembly and a catalyst assembly; Two legs are installed on the upper surface of the bottom plate, a reaction tank is installed on the upper ends of the two legs, a feed pipe is installed at the lower end of the reaction tank, a driving assembly is installed on the top of the reaction tank, a premixing assembly is provided above the interior of the reaction tank, and a catalyst assembly is installed in the middle of the reaction tank; The premixing assembly includes a first annular plate and a first circular groove opened on the top surface of the reaction tank, a support plate is installed in the middle of the reaction tank, a first rotating shaft is rotatably installed on the support plate, a third rotating shaft is installed on the upper end of the first rotating shaft, a first circular plate is installed on the upper end of the third rotating shaft, a limiting groove is opened on the outer circumferential surface of the first circular plate, 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 flow divider is installed at the lower end of the ammonia inlet pipe, and the caprolactam feed pipe is installed at the lower end of the caprolactam feed pipe. A second flow divider is installed at the lower end of the amide feed pipe, a plurality of gas outlet pipes are installed on the lower surface of the first flow divider, a plurality of liquid outlet pipes are installed on the lower surface of the second flow divider, a nozzle is installed at the end of the liquid outlet pipe, a first gear is installed on the circumferential surface of the first flow divider, a third gear is installed on the circumferential surface of the second flow divider, a second gear is installed on the third rotating shaft, a gear ring is installed on the inner wall of the reaction tank, the first gear and the third gear are both located between the second gear and the gear ring, the second gear is meshed with the first gear and the third gear respectively, and the gear The circles are respectively meshed with the first gear and the third gear, and a plurality of mixing rods are installed on the third rotating shaft, and a plurality of through holes are evenly opened on the mixing rods, and a third bevel gear is installed on the third rotating shaft, and a second circular plate is rotatably installed on the third rotating shaft, and an L-shaped bracket is installed on the lower surface of the second circular plate, and a fourth rotating shaft is rotatably installed on the side of the L-shaped bracket, and a second bevel gear is installed on the end of the fourth rotating shaft, and a second rotating shaft is rotatably installed on the support plate, and a first bevel gear is installed on the upper end of the second rotating shaft, and a communicating groove is opened 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 and connected, the second bevel gear and the third bevel gear are meshed and connected, 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 commonly installed on the upper ends of the two vertical rods, a plurality of overflow plates are evenly installed on the third annular plate, a second annular plate is installed on the inner wall of the reaction tank, the third annular plate is located between the second annular plate and the second circular plate, and the drive assembly is connected to the upper end of the third rotating shaft.

[0006] Furthermore, the driving assembly includes a motor bracket mounted on the top surface of the reaction tank, a motor is mounted on the motor bracket, an output shaft of the motor is connected to the upper end of the third rotating shaft through a coupling, and an input end of the motor is electrically connected to an output end of an external controller. The motor is controlled by the external controller to drive the third rotating shaft to rotate, thereby completing the rotation of the third rotating shaft by electric power.

[0007] Furthermore, the catalyst assembly includes a mounting groove opened inside the reaction tank, an annular mounting plate is embedded in the mounting groove, three layers of wire mesh are arranged in the annular mounting plate, the wire mesh includes a plurality of transverse reinforcing ribs installed transversely and longitudinal reinforcing ribs installed longitudinally, the plurality of transverse reinforcing ribs and the plurality of longitudinal reinforcing ribs are arranged in a crisscross pattern to form a grid, the grid is filled with catalyst, the top wire mesh is filled with a plurality of large porcelain balls, the middle wire mesh is filled with a plurality of medium porcelain balls, and the bottom wire mesh is filled with a plurality of small porcelain balls. By adopting a wire mesh structure, the pressure generated by the system can be minimized while providing good support, so as to avoid the problem of large pressure loss when the fluid flows through the reactor. The three kinds of porcelain balls can buffer the impact of the liquid and gas entering the reactor on the catalyst, protect the catalyst, and improve the distribution of the liquid and gas in the reactor.

[0008] Furthermore, an electric heating plate is also included, and both sides of the inner wall of the reaction tank are equipped with electric heating plates, the electric heating plate is located above the second annular plate, and the input end of the electric heating plate is electrically connected to the output end of the temperature controller. The temperature controller controls the operation of the electric heating plate, and the electric heating plate works to improve the effect of preparing aminocapronitrile from ammonia and caprolactam.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: when the ammonia decomposition reactor for preparing aminocapronitrile from caprolactam is used, ammonia and caprolactam are introduced into the interior of the reaction tank through the ammonia inlet pipe and the caprolactam feed pipe, and under the action of the electric heating plate, the third rotating shaft is driven to rotate by the driving component at the same time, and the rotation of the third rotating shaft drives the second gear to rotate, and the rotation of the second gear drives the first gear and the third gear to revolve around the second gear while rotating at the same time under the action of the ring gear, and under the action of the first splitter and the second splitter, ammonia and caprolactam can be introduced into the reaction tank in all directions, effectively avoiding the ammonia and caprolactam from being concentrated in one position after being introduced, so as to improve the Premixing effect, at the same time, the rotation of the third shaft drives the mixing rod to rotate, and the rotation of the third shaft drives the third bevel gear to rotate, the rotation of the third bevel gear drives the second bevel gear to rotate, the rotation of the second bevel gear drives the first bevel gear to rotate, the rotation of the first bevel gear drives the connecting frame to rotate, and the rotation of the connecting frame drives the third annular plate to rotate, so that under the action of the rotating third annular plate, the overflow plate and the mixing rod, the effect of mixing ammonia and caprolactam to prepare -aminocapronitrile is further improved, and the preparation efficiency and preparation effect of -aminocapronitrile are effectively improved. The vertical position of the third annular plate can be adjusted by the electric push rod, so that after the preparation of -aminocapronitrile is completed, it can enter the catalyst assembly for reaction, so as to facilitate subsequent discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2It is a schematic diagram of the first cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the second cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the structure of the premixing component of the present invention.

[0011] In the figure: 1 bottom plate, 2 feed pipe, 3 legs, 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 outlet pipe, 12 electric heating plate, 13 second annular plate, 14 first bevel gear, 15 first rotating shaft, 16 longitudinal reinforcing ribs, 17 liquid outlet pipe, 18 nozzle, 19 third annular plate, 20 second bevel gear, 21 support plate, 22 transverse reinforcing ribs, 23 annular mounting plate, 24 vertical rod, 25 third bevel gear, 26 second rotating shaft, 27 mounting groove, 28 limit 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 diverter, 40 second gear, 41 second diverter, 42 third gear. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] See also Figure 1-4 , This embodiment provides a technical solution: an ammonolysis reactor for preparing 6-aminocapronitrile from caprolactam, comprising a bottom plate 1, a premixing assembly and a catalyst assembly; Two legs 3 are installed on the upper surface of the bottom plate 1, a reaction tank 4 is installed on the upper ends of the two legs 3, a feed pipe 2 is installed on the lower end of the reaction tank 4, a driving component is installed on the top of the reaction tank 4, a premixing component is installed on the upper part of the reaction tank 4, and a catalyst component is installed in the middle of the reaction tank 4; The premixing assembly includes a first annular plate 6 and a first circular groove opened on the top surface of the reaction tank 4. A support plate 21 is installed in the middle of the reaction tank 4. A first rotating shaft 15 is rotatably installed on the support plate 21. A third rotating shaft 36 is installed on the upper end of the first rotating shaft 15. A first circular plate 10 is installed on the upper end of the third rotating shaft 36. A limiting groove is opened 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 is rotatably connected to the limiting groove. An ammonia inlet pipe 5 and a caprolactam feed pipe 9 are installed on the first annular plate 6. A first diverter 39 is installed at the lower end of the ammonia inlet pipe 5. The lower end of the caprolactam feed pipe 9 is installed. A second diverter 41 is installed, a plurality of gas outlet pipes 11 are installed on the lower surface of the first diverter 39, a plurality of liquid outlet pipes 17 are installed on the lower surface of the second diverter 41, a nozzle 18 is installed on the end of the liquid outlet pipe 17, a first gear 38 is installed on the circumferential surface of the first diverter 39, 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 tank 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 is meshed with the first gear 38 and the third gear 42, and the gear ring 34 is respectively meshed with the first gear 38 and the third gear 42. The third rotating shaft 36 is meshed and connected with the first gear 38 and the third gear 42. A plurality of mixing rods 35 are installed on the third rotating shaft 36. A plurality of through holes 29 are evenly provided 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 on the end of the fourth rotating shaft. A second rotating shaft 26 is rotatably installed on the support plate 21. A first bevel gear 14 is installed on the upper end of the second rotating shaft 26. A communicating groove is provided on 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, and electric push rods 31 are installed on the upper surfaces of both ends of the connecting frame 33, and a vertical rod 24 is installed on the upper end of the electric push rod 31. A third annular plate 19 is commonly installed on the upper ends of the two vertical rods 24, and a plurality of 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 tank 4, and the third annular plate 19 is located between the second annular plate 13 and the second circular plate 30. The driving assembly is connected to the upper end of the third rotating shaft 36.

[0014] When in use, 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, at the same time, the third rotating shaft 36 is driven to rotate through the driving assembly. The rotation of the third rotating shaft 36 drives the second gear 40 to rotate. The rotation of the second gear 40 drives the first gear 38 and the third gear 42 to revolve around the second gear 40 while rotating under the action of the ring gear 34. Under the action of the first splitter 39 and the second splitter 41, ammonia and caprolactam can be introduced into the reaction tank 4 in all directions, effectively avoiding the ammonia and caprolactam from being concentrated in one position after being introduced, so as to improve the pre-mixing effect of ammonia and caprolactam. At the same time, the rotation of the third rotating shaft 36 drives the mixing rod 35 The third rotating shaft 36 rotates, and the third bevel gear 25 rotates, the third bevel gear 25 rotates, the second bevel gear 20 rotates, the first bevel gear 14 rotates, the first bevel gear 14 rotates, the connecting frame 33 rotates, and the connecting frame 33 rotates to drive the third annular plate 19 to rotate, so that under the action of the rotating third annular plate 19, the overflow plate 37 and the mixing rod 35, the effect of mixing ammonia and caprolactam to prepare 6-aminocapronitrile is further improved, and the preparation efficiency and preparation effect of 6-aminocapronitrile are effectively improved. 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-aminocapronitrile is completed, it can enter the catalyst assembly reaction to facilitate subsequent discharging.

[0015] The driving assembly includes a motor bracket 7 mounted on the top surface of the reaction tank 4, a motor 8 is mounted on the motor bracket 7, the output shaft of the motor 8 is connected to the upper end of the third rotating shaft 36 through a coupling, and the input end of the motor 8 is electrically connected to the output end of the external controller. The motor 8 is controlled by the external controller to drive the third rotating shaft 36 to rotate, thereby completing the rotation of the third rotating shaft 36 by electric power.

[0016] The catalyst assembly includes a mounting groove 27 opened inside the reaction tank 4, and an annular mounting plate 23 is embedded in the mounting groove 27. Three layers of wire mesh are arranged in the annular mounting plate 23. The wire mesh includes a plurality of transverse reinforcing ribs 22 installed transversely and longitudinal reinforcing ribs 16 installed longitudinally. The plurality of transverse reinforcing ribs 22 and the plurality of longitudinal reinforcing ribs 16 are arranged in a crisscross pattern to form a grid. The grid is filled with catalysts. The top wire mesh is filled with a plurality of large porcelain balls, the middle wire mesh is filled with a plurality of medium porcelain balls, and the bottom wire mesh is filled with a plurality of small porcelain balls. By adopting a wire mesh structure, the pressure generated by the system can be minimized while providing good support, so as to avoid the problem of large pressure loss when the fluid flows through the reactor. The three kinds of porcelain 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.

[0017] The reactor 4 further comprises an electric heating plate 12, which is installed on both sides of the inner wall of the reactor 4, and is 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 temperature controller controls the operation of the electric heating plate 12, and the operation of the electric heating plate 12 improves the effect of preparing 6-aminocapronitrile from ammonia and caprolactam.

[0018] The working principle of the ammonolysis reactor for preparing 6-aminocapronitrile from caprolactam provided by the present invention is as follows: when in use, ammonia and caprolactam are introduced into the interior of the reaction tank 4 through the ammonia inlet pipe 5 and the caprolactam feed pipe 9, and under the action of the electric heating plate 12, the third rotating shaft 36 is driven to rotate by the driving component at the same time, and the rotation of the third rotating shaft 36 drives the second gear 40 to rotate, and the rotation of the second gear 40 drives the first gear 38 and the third gear 42 to revolve around the second gear 40 while rotating under the action of the ring gear 34, and under the action of the first splitter 39 and the second splitter 41, ammonia and caprolactam can be introduced into the reaction tank 4 in an all-round manner, effectively avoiding the ammonia and caprolactam from being concentrated in one position after being introduced, so as to improve the premixing effect of ammonia and caprolactam, and at the same time When the third rotating shaft 36 rotates, the mixing rod 35 rotates, and the third rotating shaft 36 rotates and drives the third bevel gear 25 to rotate, the third bevel gear 25 rotates and drives the second bevel gear 20 to rotate, the second bevel gear 20 rotates and drives the first bevel gear 14 to rotate, the first bevel gear 14 rotates and drives the connecting frame 33 to rotate, and the connecting frame 33 rotates and drives the third annular plate 19 to rotate, so that under the action of the rotating third annular plate 19, the overflow plate 37 and the mixing rod 35, the effect of mixing ammonia and caprolactam to prepare 6-aminocapronitrile is further improved, and the preparation efficiency and preparation effect of 6-aminocapronitrile are effectively improved. 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-aminocapronitrile is completed, it can enter the catalyst assembly reaction, so as to facilitate the subsequent discharging. The motor 8 is controlled to work by the external controller, and the motor 8 drives the third rotating shaft 36 to rotate, so as to complete the rotation of the third rotating shaft 36 by electric power. The wire mesh structure can provide good support while minimizing the pressure generated by the system to avoid the problem of large pressure loss when the fluid flows through the reactor. The three types of porcelain 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. The electric heating plate 12 is controlled by a temperature controller to work, and the electric heating plate 12 works to improve the effect of preparing 6-aminocapronitrile by ammonia and caprolactam.

[0019] It is worth noting that in this embodiment, the core chip of the external controller is an STC single chip microcomputer, specifically, the model is STC15W204S, and the motor 8, the electric push rod 31 and the 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 the electric push rod 31, and the temperature controller controls the operation of the electric heating plate 12 using the commonly used methods in the prior art.

[0020] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An ammonolysis reactor for producing 6-aminocapronitrile from caprolactam, characterized in that: It comprises a base plate (1), a premixing component and a catalyst component; Two legs (3) are mounted on the upper surface of the bottom plate (1); a reaction tank (4) is mounted on the upper ends of the two legs (3); a feed pipe (2) is mounted on the lower end of the reaction tank (4); a driving assembly is mounted on the top of the reaction tank (4); a premixing assembly is mounted above the interior of the reaction tank (4); and a catalyst assembly is mounted in the middle of the reaction tank (4); The premixing assembly comprises a first annular plate (6) and a first circular groove formed on the top surface of a reaction tank (4); a support plate (21) is installed in the middle of the reaction tank (4); a first rotating shaft (15) is rotatably installed on the support plate (21); a third rotating shaft (36) is installed on the upper end of the first rotating shaft (15); a first circular plate (10) is installed on 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) is rotatably connected to the limiting groove; an ammonia inlet pipe (5) and a caprolactam feed pipe (9) are installed on the first annular plate (6); and a third rotating shaft (36) is installed on the lower end of the ammonia inlet pipe (5). A first flow divider (39), a second flow divider (41) is installed at the lower end of the caprolactam feed pipe (9), a plurality of gas outlet pipes (11) are installed on the lower surface of the first flow divider (39), a plurality of liquid outlet pipes (17) are installed on the lower surface of the second flow divider (41), a nozzle (18) is installed at the end of the liquid outlet pipe (17), a first gear (38) is installed on the circumferential surface of the first flow divider (39), a third gear (42) is installed on the circumferential surface of the second flow divider (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 tank (4), the first gear (38) and the third gear (42) are both located on the second gear (40) ) and a gear ring (34), the second gear (40) is meshedly connected with the first gear (38) and the third gear (42) respectively, the gear ring (34) is meshedly connected with the first gear (38) and the third gear (42) respectively, a plurality of mixing rods (35) are mounted on the third rotating shaft (36), a plurality of through holes (29) are evenly formed 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 surface of the L-shaped bracket (32), a second bevel gear (20) is mounted on the end of the fourth rotating shaft, and the A second rotating shaft (26) is rotatably mounted on the support plate (21), a first bevel gear (14) is mounted on the upper end of the second rotating shaft (26), a communicating groove is provided 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 meshingly connected, the second bevel gear (20) and the third bevel gear (25) are meshingly connected, 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), and a third annular plate (19) is mounted on the upper ends of the two vertical rods (24).A plurality of overflow plates (37) are evenly mounted on the third annular plate (19), a second annular plate (13) is mounted on the inner wall of the reaction tank (4), the third annular plate (19) is located between the second annular plate (13) and the second circular plate (30), and the drive assembly is connected to the upper end of the third rotating shaft (36).

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

3. The ammonolysis reactor for preparing 6-aminocapronitrile from caprolactam according to claim 1, characterized in that: The catalyst assembly comprises a mounting groove (27) opened inside the reaction tank (4), an annular mounting plate (23) is embedded in the mounting groove (27), three layers of wire mesh are arranged inside the annular mounting plate (23), the wire mesh comprises a plurality of transverse reinforcing ribs (22) installed transversely and longitudinal reinforcing ribs (16) installed longitudinally, the plurality of transverse reinforcing ribs (22) and the plurality of longitudinal reinforcing ribs (16) are arranged in a crisscross pattern to form a grid, the grid is filled with a catalyst, the middle wire mesh is filled with a plurality of medium porcelain balls, and the bottom wire mesh is filled with a plurality of small porcelain balls.

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

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