Continuous reactor for NMP (N-Methyl Pyrrolidone) production

Abstract

The utility model relates to the technical field of van machinery, in particular to a continuous reactor for NMP (N-Methyl Pyrrolidone) production, which comprises a reactor body, and two sides of the outer surface of the upper side of the reactor body are fixedly connected with a GBL raw material feed port and a monomethylamine raw material feed port. According to the material mixing device disclosed by the utility model, the motor is started, so that the output shaft of the motor drives the connecting shaft to rotate, and the stirring rod and the blanking plate I are driven to synchronously rotate, so that raw materials in the material mixing barrel can be stirred, and the mixing of the raw materials is accelerated; according to the NMP continuous production device, the through grooves in the first blanking plate and the second blanking plate are also circulated from being closed to being overlapped, so that preheated and mixed raw materials in the mixing barrel enter the bottom of the inner side of the reactor body and are continuously heated by the heater, the raw materials rapidly reach the reaction temperature, NMP can be continuously produced, and the production efficiency is improved. Therefore, the problem that the final yield of NMP is affected due to difficulty in uniform heating and low mixing degree of raw materials is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical technology field of carrier, concretely is a continuous reactor for NMP production. BACKGROUND

[0002] NMP chemical name is N-methyl pyrrolidone (NMP), N-methyl pyrrolidone (NMP) is a high boiling point, environmental protection type excellent solvent, has low viscosity, chemical stability and thermal stability are good, polarity is high, volatility is low, can be infinitely miscible with water and many organic solvents and so on advantage.N-methyl pyrrolidone market application field mainly concentrates in lithium battery, circuit board, insulating material, petrochemical, pharmaceutical, pesticide, cleaning, high polymer etc.

[0003] When continuously producing NMP, material needs to be added to the reactor continuously, but once the material is added to the reactor too much at a time in the reaction process, the material in the reactor cannot be heated to the reaction temperature quickly, and stirring is difficult, so the mixing degree of the material is not high, thereby affecting the production yield of NMP. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a continuous reactor for NMP production to solve the problem that once the material is added to the reactor too much at a time in the reaction process, the material in the reactor cannot be heated to the reaction temperature quickly, and stirring is difficult, so the mixing degree of the material is not high, thereby affecting the production yield of NMP.

[0005] In order to achieve the above object, the utility model provides the following technical scheme, a kind of continuous reactor for NMP production, including reactor body, the upper side outer surface of the reactor body is fixedly connected with GBL raw material feed inlet and monomethylamine raw material feed inlet, the upper end of the inner side of the reactor body is fixedly connected with GBL raw material storage tank and monomethylamine raw material storage tank, the outer surface of the GBL raw material storage tank and monomethylamine raw material storage tank is equipped with blanking groove, the lower surface of the GBL raw material storage tank and monomethylamine raw material storage tank is fixedly connected with control board one, the lower surface of the control board one is rotatably connected with control board two, the outer surface of the control board two is fixedly connected with gear ring, the upper surface of the reactor body is fixedly connected with motor, the output shaft of the motor is connected with connecting shaft, the upper end outer surface of the connecting shaft is fixedly connected with gear, the lower end outer surface of the connecting shaft is fixedly connected with stirring rod, the inner side middle part of the reactor body is fixedly connected with mixing barrel, the inner side of the mixing barrel is fixedly connected with heating rod, the lower surface of the connecting shaft is fixedly connected with blanking plate one, the inner side lower surface of the mixing barrel is fixedly connected with blanking plate two, the inner side bottom of the reactor body is fixedly connected with heater, the lower surface of the reactor body is fixedly connected with discharge port.

[0006] Preferably, the inner wall of the reactor body is fixedly connected with blanking plate one, the side of the upper outer surface of the reactor body is fixedly connected with gas outlet near the middle position of GBL raw material feed inlet and monomethylamine raw material feed inlet, the outer surface of the gas outlet is fixedly connected with circulating pipe, and the outer surface of the circulating pipe is fixedly connected with condenser.

[0007] Preferably, the GBL raw material storage tank is fixedly connected with two groups on the inner side upper end of the reactor body, the blanking groove is rectangular groove, the blanking groove is provided with two groups on the outer surface of the GBL raw material storage tank and monomethylamine raw material storage tank, the lower surface of the GBL raw material storage tank and monomethylamine raw material storage tank is all equipped with circular groove, and the control board one is fixedly connected inside the groove, which is used for opening the cover on GBL raw material feed inlet and monomethylamine raw material feed inlet, connecting the external connection pipe with GBL raw material feed inlet and monomethylamine raw material feed inlet, respectively, and passing GBL raw material and monomethylamine raw material into GBL raw material feed inlet and monomethylamine raw material feed inlet, and the two are respectively introduced into the inner side of the GBL raw material storage tank and monomethylamine raw material storage tank fixed inside the reactor body.

[0008] Preferably, the control material plate one and the control material plate two are both circular plates, the control material plate one and the control material plate two are provided with through grooves, the control material plate two is rotationally connected to the lower surface of the control material plate one, the control material plate one, the control material plate two and the gear ring are both provided with two groups and are connected below the GBL raw material storage box and the monomethylamine raw material storage box, the gear ring is meshed with the two groups of gear rings, which functions as that as the raw materials in the GBL raw material storage box and the monomethylamine raw material storage box increase, the raw materials flow from the blanking groove to the inside of the mixing barrel fixedly connected to the middle of the reactor body, then the motor is started to drive the output shaft of the motor to rotate the connecting shaft, due to the rotation of the connecting shaft, the gear ring is rotated to drive the rotation of the two groups of gear rings, so that the two control material plate two rotates on the lower surface of the GBL raw material storage box and the monomethylamine raw material storage box, thereby the through grooves on the control material plate one and the control material plate two are closed to coincide and circulate, so that the raw materials in the GBL raw material storage box and the monomethylamine raw material storage box fall through the through grooves to the inside of the mixing barrel, thereby the raw materials do not enter the mixing barrel at one time.

[0009] Preferably, the mixing barrel is in a cylindrical shape, the inside of the mixing barrel is hollow, the heating rod is in a rod shape, the heating rod is fixedly connected to the inner wall of the mixing barrel in multiple groups, the stirring rod is in a rod shape, the stirring rod is in multiple groups, which functions as that the heating rod is started to heat the mixing barrel, so that the preheating of the mixed raw materials can be realized, which is convenient for the subsequent rapid reaching of the reaction temperature of the raw materials and prevents uneven mixing of the raw materials.

[0010] Preferably, the blanking plate one and the blanking plate two are both in a circular plate shape, the lower surface of the mixing barrel is provided with a circular groove, the blanking plate two is fixedly connected to the inside of the groove, the blanking plate one is rotationally connected to the upper surface of the blanking plate two, the blanking plate one and the blanking plate two are provided with through grooves, which functions as that due to the rotation of the gear, the stirring rod and the blanking plate one are simultaneously rotated synchronously, so that the raw materials in the mixing barrel can be stirred and mixed, meanwhile due to the rotation of the blanking plate one, the through grooves on the blanking plate one and the blanking plate two are also closed to coincide and circulate, so that the preheated and mixed raw materials in the mixing barrel enter the inside bottom of the reactor body, which is continuously heated by the heater, thereby cooperating with the preheated raw materials, so that the raw materials rapidly reach the reaction temperature, thereby the production of NMP can be continuously realized.

[0011] Preferably, the inner side of the inner wall of the middle part of the reactor body is provided with a groove adapted to the gas outlet pipe. The gas outlet pipe is in the shape of a bent pipe and is fixedly connected in two sets to the inner side of the groove. The circulation pipe is in the shape of a tube and its upper and lower ends are fixedly connected to the upper end and middle section of the side plate of the reactor body. Its function is that when NMP is produced, methylamine gas is generated. Under the high temperature environment at the bottom of the inner side, the gas rises and enters the upper part of the inner side of the reactor body through the gas outlet pipe, and then enters the inner side of the circulation pipe from the gas outlet. When the gas passes through the condenser, the gas is condensed by the condenser, so that the gas is re-liquefied and then flows into the inner side of the reactor body through the circulation pipe, and re-enters the inner side of the mixing tank, thereby making the reaction more complete and avoiding waste of raw materials.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By starting the motor, the output shaft of the motor drives the connecting shaft to rotate, which in turn drives the stirring rod and the first discharge plate to rotate synchronously. This stirs the raw materials in the mixing tank, accelerating the mixing process. Then, the heating rod heats the mixed raw materials, which are preheated. Due to the rotation of the first discharge plate, the channels on the first and second discharge plates circulate continuously from closed to overlapping. This allows the preheated and mixed raw materials in the mixing tank to enter the bottom inner side of the reactor body. Through the continuous heating of the heater, the preheated raw materials are quickly heated to the reaction temperature, enabling continuous NMP production. This prevents uneven heating and poor mixing of the raw materials, which would affect the final NMP yield.

[0014] 2. During the production of NMP, monomethylamine gas is generated. Under the high temperature environment at the bottom of the inner side, the gas rises and enters the upper part of the inner side of the reactor body through the gas outlet pipe. It then enters the inner side of the circulation pipe from the gas outlet. When the gas passes through the condenser, it is condensed and reliquefied. It then flows back into the inner side of the reactor body through the circulation pipe and re-enters the inner side of the mixing tank, thus making the reaction more complete and avoiding waste of raw materials. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a rear-view perspective view of the structure of this utility model;

[0017] Figure 3 This utility model Figure 1 A cross-sectional plan view of the reactor body.

[0018] Figure 4 For the utility model Figure 2 The internal structure of the reactor body is shown in the figure.

[0019] Figure 5 For the utility model Figure 4 The structure at A is shown in the enlarged view.

[0020] In the figure: 1, reactor body; 2, GBL raw material feeding port; 3, monomethylamine raw material feeding port; 4, GBL raw material storage tank; 5, monomethylamine raw material storage tank; 6, blanking groove; 7, control plate one; 8, control plate two; 9, gear ring; 10, motor; 11, connecting shaft; 12, gear; 13, stirring rod; 14, mixing barrel; 15, heating rod; 16, blanking plate one; 17, blanking plate two; 18, heater; 19, discharge port; 20, gas outlet pipe; 21, gas outlet; 22, circulating pipe; 23, condenser. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides an embodiment:

[0023] The utility model provides a continuous reactor for NMP production, including reactor body 1, both sides of the upper side outer surface of reactor body 1 are fixedly connected with GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3, the inner side upper end of reactor body 1 is fixedly connected with GBL raw material storage tank 4 and monomethylamine raw material storage tank 5, the outer surface of GBL raw material storage tank 4 and monomethylamine raw material storage tank 5 is opened with drop chute 6, the lower surface of GBL raw material storage tank 4 and monomethylamine raw material storage tank 5 is fixedly connected with control board no. 1 7, the lower surface of control board no. 1 7 is rotatably connected with control board no. 2 8, the outer surface of control board no. 2 8 is fixedly connected with gear ring 9, the upper surface of reactor body 1 is fixedly connected with motor 10, the output shaft of motor 10 is connected with connecting shaft 11, the upper end outer surface of connecting shaft 11 is fixedly connected with gear 12, the lower end outer surface of connecting shaft 11 is fixedly connected with stirring rod 13, the inner side middle part of reactor body 1 is fixedly connected with mixing barrel 14, the inner side of mixing barrel 14 is fixedly connected with heating rod 15, the lower surface of connecting shaft 11 is fixedly connected with drop plate no. 1 16, the inner side lower surface of mixing barrel 14 is fixedly connected with drop plate no. 2 17, the inner side bottom of reactor body 1 is fixedly connected with heater 18, the lower surface of reactor body 1 is fixedly connected with discharge gate 19.

[0024] Further, the inner wall inner side of reactor body 1 is fixedly connected with drop plate no. 1 16, the side of the upper side outer surface of reactor body 1 is fixedly connected with gas outlet 21 near the middle position of GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3, the outer surface of gas outlet 21 is fixedly connected with circulating pipe 22, the outer surface of circulating pipe 22 is fixedly connected with condenser 23.

[0025] Further, GBL raw material storage tank 4 is fixedly connected in two groups on the inner side upper end of reactor body 1, drop chute 6 is rectangular recess, drop chute 6 is opened in two groups on the outer surface of GBL raw material storage tank 4 and monomethylamine raw material storage tank 5, the lower surface of GBL raw material storage tank 4 and monomethylamine raw material storage tank 5 all opens circular groove, control board no. 1 7 is fixedly connected in the inner side of recess, its function is through unscrewing the lid on GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3, then through connecting pipe with GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3, respectively into GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3 with GBL raw material and monomethylamine raw material, both enter the inner side of the fixed GBL raw material storage tank 4 and monomethylamine raw material storage tank 5 in the inner side of reactor body 1 through GBL raw material feed inlet 2 and monomethylamine raw material feed inlet 3.

[0026] Further, the control material plate one 7 and the control material plate two 8 are both circular plates, the control material plate one 7 and the control material plate two 8 are both provided with through grooves, the control material plate two 8 is rotationally connected to the lower surface of the control material plate one 7, the control material plate one 7, the control material plate two 8 and the gear ring 9 are both provided in two groups and connected below the GBL raw material storage box 4 and the monomethylamine raw material storage box 5, the gear 12 is engaged with the two groups of gear rings 9 respectively, and the function is that as the raw materials in the GBL raw material storage box 4 and the monomethylamine raw material storage box 5 increase, the raw materials flow from the falling material groove 6 to the inside of the mixing barrel 14 fixedly connected to the middle of the inside of the reactor body 1, then the starting motor 10 is started, the output shaft of the motor 10 drives the connecting shaft 11 to rotate, due to the rotation of the connecting shaft 11, the gear 12 is driven to rotate, thereby driving the rotation of the two groups of gear rings 9, so that the two groups of control material plate two 8 rotate on the lower surfaces of the GBL raw material storage box 4 and the monomethylamine raw material storage box 5 respectively, thereby making the through grooves on the control material plate one 7 and the control material plate two 8 from closing to coinciding to circulate all the time, so that the raw materials in the GBL raw material storage box 4 and the monomethylamine raw material storage box 5 fall through the through grooves to the inside of the mixing barrel 14, thereby preventing too much raw materials from entering the mixing barrel 14 at one time.

[0027] Further, the mixing barrel 14 is in a cylindrical shape, the inside of the mixing barrel 14 is hollow, the heating rod 15 is in a rod shape, the heating rod 15 is fixedly connected to the inner wall of the mixing barrel 14 in multiple groups, the stirring rod 13 is in a rod shape, and the stirring rod 13 is in multiple groups, and the function is that the heating rod 15 is started to heat the mixing barrel 14, thereby preheating the mixed raw materials, facilitating the subsequent rapid reaching of the reaction temperature of the raw materials, and preventing uneven mixing of the raw materials.

[0028] Further, the falling material plate one 16 and the falling material plate two 17 are both in a circular plate shape, the lower surface of the mixing barrel 14 is provided with a circular groove, the falling material plate two 17 is fixedly connected to the inside of the groove, the falling material plate one 16 is rotationally connected to the upper surface of the falling material plate two 17, and the falling material plate one 16 and the falling material plate two 17 are both provided with through grooves, and the function is that due to the rotation of the connecting shaft 11, the stirring rod 13 and the falling material plate one 16 are simultaneously driven to rotate synchronously, thereby stirring the raw materials in the mixing barrel 14 and accelerating the mixing of the raw materials, and simultaneously due to the rotation of the falling material plate one 16, the through grooves on the falling material plate one 16 and the falling material plate two 17 also circulate from closing to coinciding all the time, thereby making the preheated and mixed raw materials in the mixing barrel 14 enter the inside bottom of the reactor body 1, and through the continuous heating of the heater 18, thereby cooperating with the preheated raw materials, so that the raw materials rapidly reach the reaction temperature, thereby continuously producing NMP.

[0029] Further, the inner side of the middle inner wall of the reactor body 1 is provided with a groove matched with the gas outlet pipe 20. The gas outlet pipe 20 is in the shape of a bent pipe. The two groups of gas outlet pipes 20 are fixedly connected to the inner side of the groove. The circulation pipe 22 is in the shape of a pipe. The upper and lower ends of the circulation pipe 22 are fixedly connected to the upper end and the middle section of the side plate of the reactor body 1. The function of the circulation pipe 22 is that, during the production of NMP, methylamine gas is generated. Under the high-temperature environment at the inner bottom, the gas rises and enters the upper end of the inner side of the reactor body 1 through the gas outlet pipe 20, and then enters the inner side of the circulation pipe 22 from the gas outlet 21. When the gas passes through the condenser 23, the gas is liquefied again through the condensation of the condenser 23, and then flows into the inner side of the reactor body 1 through the circulation pipe 22, re-enters the inner side of the mixing barrel 14, so that the reaction is more complete, and the waste of raw materials is avoided.

[0030] Working principle: through the upper side of the reactor body 1 outside surface both sides fixedly connected with GBL raw material feeding port 2 and one methylamine raw material feeding port 3, the inside upper end of reactor body 1 is fixedly connected with GBL raw material storage tank 4 and one methylamine raw material storage tank 5, the outer surface of GBL raw material storage tank 4 and one methylamine raw material storage tank 5 is provided with a blanking groove 6, the lower surface of GBL raw material storage tank 4 and one methylamine raw material storage tank 5 is fixedly connected with control board one 7, the lower surface of control board one 7 is rotatably connected with control board two 8, the outer surface of control board two 8 is fixedly connected with gear ring 9, the upper surface of reactor body 1 is fixedly connected with motor 10, the output shaft of motor 10 is connected with connecting shaft 11, the upper end outer surface of connecting shaft 11 is fixedly connected with gear 12, the lower end outer surface of connecting shaft 11 is fixedly connected with stirring rod 13, the inside middle part of reactor body 1 is fixedly connected with mixing barrel 14, the inside of mixing barrel 14 is fixedly connected with heating rod 15, the lower surface of connecting shaft 11 is fixedly connected with blanking plate one 16, the inside lower surface of mixing barrel 14 is fixedly connected with blanking plate two 17, the inside bottom of reactor body 1 is fixedly connected with heater 18, the lower surface of reactor body 1 is fixedly connected with discharge port 19, by starting heating rod 15, so that heating rod 15 heats mixing barrel 14, then by unscrewing the lid on GBL raw material feeding port 2 and one methylamine raw material feeding port 3, then by connecting the external pipe with GBL raw material feeding port 2 and one methylamine raw material feeding port 3, GBL raw material and one methylamine raw material are respectively introduced into GBL raw material feeding port 2 and one methylamine raw material feeding port 3, which are respectively introduced into the inside of GBL raw material storage tank 4 and one methylamine raw material storage tank 5 fixedly arranged inside reactor body 1, as the raw materials in GBL raw material storage tank 4 and one methylamine raw material storage tank 5 increase, the raw materials flow from blanking groove 6 to the inside of mixing barrel 14 fixedly arranged in the middle part of reactor body 1, then by starting motor 10, the output shaft of motor 10 drives connecting shaft 11 to rotate, due to the rotation of connecting shaft 11, gear 12 rotates, thereby driving the rotation of two sets of gear rings 9, so that two sets of control board two 8 rotate on the lower surface of GBL raw material storage tank 4 and one methylamine raw material storage tank 5 respectively, thereby making the through slots on control board one 7 and control board two 8 from closing to coinciding to circulate all the time, thereby making the GBL raw material and one methylamine raw material in GBL raw material storage tank 4 and one methylamine raw material storage tank 5 fall into the inside of mixing barrel 14 through the through slots, so that too much raw materials do not enter mixing barrel 14 at one time, at the same time, due to the rotation of connecting shaft 11, stirring rod 13 and blanking plate one 16 rotate synchronously, thereby stirring the raw materials in mixing barrel 14, accelerating the mixing of raw materials, then by heating of heating rod 15, the preheating of the mixed raw materials can be realized, due to the rotation of blanking plate one 16, the through slots on blanking plate one 16 and blanking plate two 17 also circulate from closing to coinciding all the time,Thus, the preheated and mixed raw materials in the mixing barrel 14 enter the inside bottom of the reactor body 1, and are continuously heated by the heater 18, so as to cooperate with the preheated raw materials, so that the raw materials rapidly reach the reaction temperature, thereby continuously producing NMP, and preventing the raw materials from being difficult to be heated uniformly, the mixing degree being not high, and affecting the yield of the final NMP.

[0031] By fixedly connecting the falling plate 16 to the inner wall of the reactor body 1, the upper outer surface of the reactor body 1 is fixedly connected with the gas outlet 21 near the middle position of the GBL raw material feeding port 2 and the methylamine raw material feeding port 3, the outer surface of the gas outlet 21 is fixedly connected with the circulating pipe 22, and the outer surface of the circulating pipe 22 is fixedly connected with the condenser 23. By producing methylamine gas during the production of NMP, the gas rises in the high-temperature environment at the inside bottom, enters the upper end of the inside of the reactor body 1 through the gas outlet pipe 20, enters the inside of the circulating pipe 22 from the gas outlet 21, and is liquefied again by the condensation of the condenser 23 when passing through the condenser 23. Then, the gas flows into the inside of the reactor body 1 through the circulating pipe 22, reenters the inside of the mixing barrel 14, so as to make the reaction more thorough, and avoid waste of raw materials.

[0032] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A continuous reactor for NMP production comprising a reactor body (1), characterized in that: The upper side of the reactor body (1) is fixedly connected with GBL raw material feeding port (2) and one methylamine raw material feeding port (3), the upper end of the inner side of the reactor body (1) is fixedly connected with GBL raw material storage tank (4) and one methylamine raw material storage tank (5), the outer surface of the GBL raw material storage tank (4) and one methylamine raw material storage tank (5) is provided with a blanking groove (6), the lower surface of the GBL raw material storage tank (4) and one methylamine raw material storage tank (5) is fixedly connected with a control board one (7), the lower surface of the control board one (7) is rotatably connected with a control board two (8), the outer surface of the control board two (8) is fixedly connected with a gear ring (9), the upper surface of the reactor body (1) is fixedly connected with a motor (10), the output shaft of the motor (10) is connected with a connecting shaft (11), the upper end of the outer surface of the connecting shaft (11) is fixedly connected with a gear (12), the lower end of the outer surface of the connecting shaft (11) is fixedly connected with a stirring rod (13), the inner side of the middle of the reactor body (1) is fixedly connected with a mixing barrel (14), the inner side of the mixing barrel (14) is fixedly connected with a heating rod (15), the lower surface of the connecting shaft (11) is fixedly connected with a blanking plate one (16), the inner side of the lower surface of the mixing barrel (14) is fixedly connected with a blanking plate two (17), the inner side of the bottom of the reactor body (1) is fixedly connected with a heater (18), the lower surface of the reactor body (1) is fixedly connected with a discharge port (19).

2. A continuous reactor for NMP production according to claim 1, characterized in that: The inner wall of the reactor body (1) is fixedly connected with a blanking plate one (16), the side of the upper side of the reactor body (1) is fixedly connected with an air outlet (21) near the middle position of the GBL raw material feeding port (2) and one methylamine raw material feeding port (3), the outer surface of the air outlet (21) is fixedly connected with a circulating pipe (22), the outer surface of the circulating pipe (22) is fixedly connected with a condenser (23).

3. A continuous reactor for NMP production according to claim 1, characterized in that: The GBL raw material storage tank (4) is fixedly connected with two groups on the inner side of the reactor body (1), the blanking groove (6) is a rectangular groove, the blanking groove (6) is provided with two groups on the outer surface of the GBL raw material storage tank (4) and one methylamine raw material storage tank (5), the lower surface of the GBL raw material storage tank (4) and one methylamine raw material storage tank (5) is provided with a circular groove, the control board one (7) is fixedly connected with the inner side of the groove.

4. A continuous reactor for NMP production according to claim 3, characterized in that: The control board one (7) and the control board two (8) are circular plates, the control board one (7) and the control board two (8) are provided with a through groove, the control board two (8) is rotatably connected with the lower surface of the control board one (7), the control board one (7), the control board two (8) and the gear ring (9) are provided with two groups below the GBL raw material storage tank (4) and one methylamine raw material storage tank (5), the gear (12) is engaged with two groups of gear rings (9) respectively.

5. A continuous reactor for NMP production according to claim 4, characterized in that: The mixing barrel (14) is in cylindrical shape, the inside of the mixing barrel (14) is hollow, the heating rod (15) is in rod shape, the heating rod (15) is fixedly connected in groups in the inner wall of the mixing barrel (14), the stirring rod (13) is in rod shape, and the stirring rod (13) is in groups.

6. A continuous reactor for NMP production according to claim 5, characterized in that: The blanking plate one (16) and the blanking plate two (17) are both in circular plate shape, the lower surface of the mixing barrel (14) is provided with a circular groove, the blanking plate two (17) is fixedly connected to the inside of the groove, the blanking plate one (16) is rotatably connected to the upper surface of the blanking plate two (17), and the blanking plate one (16) and the blanking plate two (17) are both provided with a through groove.

7. A continuous reactor for NMP production according to claim 2, characterized in that: The inner side of the middle inner wall of the reactor body (1) is provided with a groove matched with the gas outlet pipe (20), the gas outlet pipe (20) is in bent pipe shape, the gas outlet pipe (20) is fixedly connected in two groups to the inside of the groove, the circulating pipe (22) is in pipe shape, and the upper and lower ends of the circulating pipe (22) are fixedly connected to the upper end and the middle section of the side plate of the reactor body (1).

Images