A reaction tank for synthesizing tri-substituted aniline and a method of using the same

Abstract

The application discloses a reaction tank for synthesizing tri-substituted aniline, which comprises a tank body, a cover body and a guide frame, the top of the tank body is movably provided with the cover body, the top of the cover body is provided with a motor, the output end of the motor is provided with a mounting rod, the bottom of the mounting rod is symmetrically provided with guide rods, the outer side of the guide rods is movably provided with the guide frame, and the back of the guide frame is provided with a grid frame. The catalyst is placed in the grid frame, then the production raw materials of tri-substituted aniline are added into the tank body, then the motor drives the grid frame to rotate, and then the grid frame drives the liquid production raw materials in the tank body to rotate, so that the unreacted liquid production raw materials are rapidly contacted with the catalyst, the production raw materials after reaction are rapidly separated from the catalyst, the reaction speed of the production raw materials is accelerated, and the catalyst will not be broken to produce impurities due to collision of the traditional stirring rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reaction tanks, in particular to a reaction tank for synthesizing tri-substituted aniline and a use method thereof. BACKGROUND

[0002] The reaction tank is a kind of container for various chemical substances to react inside. Some reaction tanks are equipped with stirring components inside to accelerate the reaction rate. Tri-substituted aniline is a compound in which the hydrogen atoms in aniline are replaced by other atoms or groups. It is usually obtained by reacting aniline with other raw materials. In order to accelerate the reaction speed, a metal catalyst is sometimes added to the raw materials to catalyze the reaction. The catalytic efficiency of the catalyst will decrease after adsorbing impurities and reactants, so the catalyst needs to be replaced frequently.

[0003] The existing reaction tank has the following defects:

[0004] 1. Patent document CN106423022B discloses a high-efficiency liquid reaction tank, which comprises a vertical tank body and a heating sheet. The inner wall of the tank body is provided with a corrosion-resistant layer. A motor is provided on the tank body and connected to stirring blades inside the tank body through a speed reducer. A rotating guide column is provided above the stirring blades. A circular cleaning pipe is provided inside the tank body. A filter screen is provided in the middle of the cleaning pipe. Water outlets are provided on the outer side and above the cleaning pipe. The cleaning pipe is connected to a water inlet outside the tank body. A manhole and a feed inlet are provided above the tank body. A discharge outlet is provided below the tank body. Four to ten limiting clamps are provided on the outer side of the tank body. The heating sheet is arranged in the limiting clamp. The heating sheet is provided with a temperature insulation layer on the surface and a magnetic strip on the back. The heating sheet is provided with an air inlet and an air outlet. The structure of the reaction tank is compact and reasonable, and the operation is convenient. The heating sheet can be easily installed and removed. The medium reaction is fast and stable, and the tank body can be quickly cleaned. The corrosion of the medium to the corrosion-resistant layer is reduced, and the service life of the tank body is prolonged. The reaction tank in this patent can make the liquid in the reaction tank flow quickly through the blades, thereby increasing the reaction speed. However, when a metal catalyst needs to be added to the reaction tank, the blades are easy to collide with the catalyst, causing the catalyst to break and generate impurities, affecting the quality of the reaction liquid. Therefore, a reaction tank for synthesizing tri-substituted aniline is needed to solve this problem, which can increase the flow of the reaction liquid and avoid the collision between the metal catalyst and other components to cause breakage.

[0005] 2、Patent document JP2008284421A discloses a reaction tank with a rectangular shape, "to provide a stirred reaction tank with a box-like shape, in which the flow rate at the bottom can be ensured by low power while maintenance is distributed. Solution: the stirred reaction tank with a box-like shape is provided with: an externally driven propeller stirrer; and a reflection plate for converting the downward current discharged from the propeller stirrer into a horizontal current," the reaction tank in this patent can increase the flow rate of the liquid, but when the catalyst is added to the inside, the catalyst needs to be discharged after use, it is not convenient to discharge the catalyst from the inside, and people clean the catalyst more time-consuming, so a reaction tank for the synthesis of tri-substituted aniline is needed to solve the problem.

[0006] 3、Patent document EP2950915B1 discloses a stirred tank reactor, "comprising a reactor tank (1) having a first volume (V1), a drive shaft (2) extending vertically within the reactor tank, a motor (3) for rotating the drive shaft (2), a downward pumping shaft flow impeller (4) connected to the drive shaft (2) to form a main flow pattern within the reactor tank, and a gas inlet (5) for supplying gas to the reactor tank (1) to be dispersed into the liquid. The reactor comprises a mechanical gas injection device (6) comprising a diffusion chamber (7) having a second volume (V2) substantially smaller than the first volume (V1) of the reactor tank (1), the diffusion chamber being arranged coaxially with the drive shaft (2), the gas inlet (5) being arranged for feeding gas into the diffusion chamber (7), and a mixing device (8, 9, 10, 11, 6). 12) arranged within the dispersion chamber (7) to disperse the gas into fine bubbles before the bubbles enter the main flow pattern, mixing the gas into the liquid. The mixing power per unit volume in the dispersion chamber (7) is significantly greater than the mixing power elsewhere in the reactor," the reaction tank in this patent can accelerate the flow rate of the liquid inside by the stirring device, but when the catalyst is added to the inside, the stirring device is difficult to move the catalyst accumulated at the bottom, which in turn reduces the flow rate of the liquid on the catalyst, affecting the catalytic efficiency, so a reaction tank for the synthesis of tri-substituted aniline is needed to solve the problem.

[0007] 4、Patent document US20090311776A1 discloses a stirred tank bioreactor, "The bioreactor is pre-sterilized and has a top and a body that are sealed to each other. One or more ports are formed in the top and side of the housing. Preferably, at least one port is below the liquid / air level for the housing. The one or more ports below the liquid / air interface level can be used as sampling ports or access ports for probes or drains or supply ports for liquids or gases. The bioreactor provides a direct retrofit to existing glass or steel components, utilizing existing support structures and controls. The molded design overcomes problems such as fixed discontinuities, dead spots, etc. that are built in by the molding process. Reproducible probe and other equipment locations can also be guaranteed by using molded port features. The molded plastic allows greater flexibility in material selection to reduce or eliminate lipid or cholesterol binding," the reactor in the patent does not have a structure for measuring weight, when there is a metal catalyst inside the reactor, it is impossible to judge the weight change of the metal catalyst, so as to understand the weight of the impurities adsorbed by the metal catalyst, and thus judge the change of the catalytic ability of the catalyst, therefore, a three-substituted aniline synthesis reaction tank capable of measuring the weight of the catalyst is needed to solve the problem. SUMMARY

[0008] One purpose of the present application is to provide a three-substituted aniline synthesis reaction tank and its use method, which can solve the technical problems in the prior art.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a three-substituted aniline synthesis reaction tank, comprising a tank body, a cover body and a guide frame, the top of the tank body movably installs the cover body, the top of the cover body installs a motor, the output end of the motor installs a mounting rod, the bottom of the mounting rod symmetrically installs a guide rod, the front of the tank body installs a limiting assembly, the limiting assembly is used for limiting the cover body to avoid the cover body moving upward;

[0010] The outer side of the guide rod movably installs a guide frame, and the back of the guide frame installs a grid frame.

[0011] Preferably, a plurality of supporting columns are installed at the bottom of the tank body, and a sealing ring is installed through the bottom of the tank body.

[0012] Preferably, a discharge pipe is installed at the output end of the tank body, and a hand valve is installed at the output end of the discharge pipe.

[0013] Preferably, the limiting assembly comprises a mounting block, a threaded rod and a limiting rod, the back of the mounting block is connected with the front of the tank body, the top of the mounting block penetrates and installs the threaded rod, one end of the threaded rod installs the limiting rod, and the limiting rod is located above the cover body.

[0014] Preferably, the inside of the grid frame is movably mounted with a catalyst.

[0015] Preferably, the bottom of the grid frame is movably mounted with a first lifting rod, one end of the first lifting rod is mounted with a first lifting plate, one end of the first lifting rod is mounted with a second lifting plate, and the bottom of the first lifting plate is mounted with a rubber pad.

[0016] Preferably, the bottom of the tank body is mounted with a mounting plate, and the bottom of the mounting plate is mounted with a hydraulic cylinder.

[0017] Preferably, the output end of the hydraulic cylinder is mounted with a guide ring, the inner wall of the bottom of the guide ring is mounted with a pressure sensor, the top of the guide ring is movably mounted with a second lifting rod, and one end of the second lifting rod penetrates the top of the sealing ring.

[0018] Preferably, the method for using the reaction tank for synthesizing tri-substituted aniline is as follows:

[0019] S1, place the catalyst inside the grid frame, then add the production raw materials of tri-substituted aniline to the inside of the tank body, then cover the cover on the top of the tank body, the motor drives the grid frame to rotate, and then the grid frame drives the liquid production raw materials in the tank body to rotate, so that the unreacted liquid production raw materials quickly contact the catalyst, and the reacted production raw materials quickly leave the catalyst, thereby accelerating the reaction speed of the production raw materials;

[0020] S2, by starting the hydraulic cylinder to drive the second lifting rod to move upwards, the second lifting rod can drive the first lifting plate to move upwards, and then the first lifting plate drives the first lifting rod and the second lifting plate to move upwards, so that the second lifting plate drives the catalyst inside the grid frame to move upwards, and then when the second lifting rod moves downwards, the second lifting plate will also move downwards, so that the catalyst can move downwards, and so on, so that the catalyst in the grid frame can become loose, avoiding the accumulation of the catalyst to cause insufficient contact with the liquid reaction raw materials, thereby avoiding the phenomenon of low reaction efficiency;

[0021] S3, after the reaction is completed, the tri-substituted aniline material in the tank body can be discharged from the discharge pipe by opening the hand valve.

[0022] Preferably, the S3 further includes the following steps:

[0023] S31, the weight of the catalyst inside the grid frame can be measured by the pressure sensor, when the weight of the catalyst becomes heavier than before the reaction, it means that the catalyst has adsorbed more material and impurities, affecting the catalytic efficiency of the catalyst, and the catalyst needs to be replaced, by removing the cover and then moving the guide frame upwards, the grid frame can be easily removed, thereby facilitating the replacement of the catalyst.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] 1、The present application can make the unreacted liquid production raw materials contact with the catalyst quickly, and the reacted production raw materials leave the catalyst quickly, thereby accelerating the reaction speed of the production raw materials, and the catalyst will not be broken and produce impurities due to the collision of the traditional stirring rod.

[0026] 2、When the catalyst needs to be replaced, the cover body is removed, and then the guide frame is moved upward to conveniently remove the grid frame, thereby conveniently replacing the catalyst.

[0027] 3、The present application can make the unreacted liquid production raw materials contact with the catalyst quickly, and the reacted production raw materials leave the catalyst quickly, thereby accelerating the reaction speed of the production raw materials, and the catalyst will not be broken and produce impurities due to the collision of the traditional stirring rod.

[0028] 4、The application can measure the weight of the catalyst in the grid frame through the pressure sensor, when the weight of the catalyst becomes heavier than before the catalyst does not participate in the reaction, it indicates that the catalyst adsorbs more material and impurities, which affects the catalytic efficiency of the catalyst, so as to judge whether the catalyst needs to be replaced, so that the reaction tank for synthesizing tri-substituted aniline can measure the weight of the catalyst in the grid frame through the pressure sensor, when the weight of the catalyst becomes heavier than before the catalyst does not participate in the reaction, it indicates that the catalyst adsorbs more material and impurities, which affects the catalytic efficiency of the catalyst, so as to judge whether the catalyst needs to be replaced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a perspective view of the application;

[0030] Figure 2 It is a side sectional view of the tank body of the application;

[0031] Figure 3 It is a schematic view of the cover structure of the application;

[0032] Figure 4 It is a schematic view of the mounting rod structure of the application;

[0033] Figure 5 It is a schematic view of the grid frame structure of the application;

[0034] Figure 6 It is a schematic view of the first lifting rod structure of the application;

[0035] Figure 7 It is a schematic view of the mounting plate structure of the application;

[0036] Figure 8 It is a schematic view of the guide ring structure of the application;

[0037] Figure 9 It is a flow chart of the use method of the application.

[0038] In the figure: 1, tank body; 101, support column; 102, sealing ring; 2, discharge pipe; 201, hand valve; 3, cover; 301, motor; 302, mounting rod; 303, guide rod; 4, mounting block; 401, threaded rod; 402, limiting rod; 5, guide frame; 501, grid frame; 502, catalyst; 6, first lifting rod; 601, first lifting plate; 602, second lifting plate; 603, rubber pad; 7, mounting plate; 701, hydraulic cylinder; 8, guide ring; 801, pressure sensor; 802, second lifting rod. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Please refer to Figure 1 and Figure 2 , the present application provides an embodiment: a three-substituted aniline synthesis reaction tank;

[0043] It includes a tank body 1 and a discharge pipe 2, a plurality of support columns 101 are mounted at the bottom of the tank body 1, a sealing ring 102 is mounted through the bottom of the tank body 1, the tank body 1 can provide mounting positions for other parts of the device, so that the other parts of the device have positions to be installed, and the tank body 1 can provide a reaction space for the reaction, the support columns 101 support the tank body 1, so that the tank body 1 can be supported, the sealing ring 102 plays a sealing role, which can seal the gap between the second lifting rod 802 and the tank body 1, prevent the liquid inside the tank body 1 from flowing out, the output end of the tank body 1 is provided with the discharge pipe 2, the output end of the discharge pipe 2 is provided with a hand valve 201, the discharge pipe 2 can provide a transmission path for the discharge of the liquid inside the tank body 1, the hand valve 201 plays a role in controlling the closing and opening of the discharge pipe 2, so that the discharge of the liquid inside the tank body 1 can be controlled.

[0044] Please refer to Figure 1 , Figure 2 ,Figure 3 and Figure 4 An embodiment of the present application provides a reaction tank for synthesizing tri-substituted aniline.

[0045] The top of the tank body 1 is movably provided with a cover body 3, the top of the cover body 3 is provided with a motor 301, the output end of the motor 301 is provided with a mounting rod 302, the bottom of the mounting rod 302 is symmetrically provided with a guide rod 303, the cover body 3 serves to close the top of the tank body 1 and can provide a mounting position for the motor 301, so that the motor 301 can be mounted, the motor 301 can convert electric energy into kinetic energy, so as to drive the mounting rod 302 to rotate, the mounting rod 302 can provide a mounting position for the guide rod 303, and the mounting rod 302 can drive the guide rod 303 to rotate by rotating, the guide rod 303 can provide a mounting position for a guide frame 5 and can guide the guide frame 5 to move up and down, the front of the tank body 1 is provided with a limiting assembly, the limiting assembly serves to limit the cover body 3 from moving upward, the limiting assembly comprises the mounting block 4, a threaded rod 401 and a limiting rod 402, the back of the mounting block 4 is connected with the front of the tank body 1, the top of the mounting block 4 is provided with the threaded rod 401 penetrating through, one end of the threaded rod 401 is provided with the limiting rod 402, and the limiting rod 402 is located above the cover body 3, the mounting block 4 can provide a mounting position for the threaded rod 401, so that the threaded rod 401 can be mounted, the threaded rod 401 can provide a mounting position for the limiting rod 402, and the limiting rod 402 can rotate, the limiting rod 402 can limit the cover body 3 from moving upward by rotating above the cover body 3.

[0046] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 An embodiment of the present application provides a reaction tank for synthesizing tri-substituted aniline.

[0047] The outer side of the guide rod 303 is movably provided with a guide frame 5, the back of the guide frame 5 is provided with a grid frame 501, the inside of the grid frame 501 is movably provided with a catalyst 502, the guide frame 5 can provide a mounting position for the grid frame 501, and the guide frame 5 can drive the grid frame 501 to move up and down by moving up and down, the grid frame 501 can provide a placing position for the catalyst 502, and the grid frame 501 can drive the catalyst 502 to rotate by rotating, the catalyst 502 is a metal catalyst 502, and the catalyst 502 can accelerate the reaction speed of tri-substituted aniline production raw materials.

[0048] Please refer to Figure 1 , Figure 2 , Figure 5 andFigure 6 The application provides a reaction tank for synthesizing tri-substituted aniline.

[0049] The first lifting rod 6 is movably arranged at the bottom of the grid frame 501, one end of the first lifting rod 6 is provided with a first lifting plate 601, one end of the first lifting rod 6 is provided with a second lifting plate 602, the bottom of the first lifting plate 601 is provided with a rubber pad 603, the first lifting rod 6 can drive the second lifting plate 602 to move up and down by moving up and down, the first lifting plate 601 can be lifted upwards by the second lifting rod 802, and then can move up and down, so as to drive the first lifting rod 6 to move up and down, the second lifting plate 602 can drive the catalyst 502 in the grid frame 501 to move upwards by moving upwards, so that the catalyst 502 can avoid being stacked together, thereby increasing the contact area of the catalyst 502 and the liquid reaction raw material and accelerating the reaction speed, and the rubber pad 603 can buffer the impact of the second lifting rod 802 on the first lifting plate 601.

[0050] Please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 The application provides a reaction tank for synthesizing tri-substituted aniline.

[0051] The mounting plate 7 and the guide ring 8 are arranged, the mounting plate 7 is arranged at the bottom of the tank body 1, the bottom of the mounting plate 7 is provided with a hydraulic cylinder 701, the mounting plate 7 can provide a mounting position for the hydraulic cylinder 701, so that the hydraulic cylinder 701 has a position for installation, the hydraulic cylinder 701 can convert hydraulic energy into kinetic energy, so as to drive the guide ring 8 to move up and down, the output end of the hydraulic cylinder 701 is provided with the guide ring 8, the bottom inner wall of the guide ring 8 is provided with a pressure sensor 801, the top of the guide ring 8 is movably provided with the second lifting rod 802, one end of the second lifting rod 802 penetrates through the top of the sealing ring 102, the guide ring 8 can provide a mounting position for the second lifting rod 802, and the guide ring 8 can drive the second lifting rod 802 to move up and down by moving up and down, the pressure sensor 801 can measure the pressure applied by the second lifting rod 802 to the pressure sensor 801, so as to judge the weight of the catalyst 502, and then the amount of impurities adsorbed in the catalyst 502 can be judged, and the second lifting rod 802 can drive the first lifting plate 601 to move upwards by moving upwards.

[0052] The use method of the reaction tank for synthesizing tri-substituted aniline is as follows:

[0053] S1, the catalyst 502 is placed inside the grid frame 501, then the production raw materials of tri-substituted aniline are added to the inside of the tank body 1, then the cover 3 is covered on the top of the tank body 1, the motor 301 drives the grid frame 501 to rotate, and then the grid frame 501 drives the liquid production raw materials in the tank body 1 to rotate, so that the unreacted liquid production raw materials quickly contact the catalyst 502, and the reacted production raw materials quickly leave the catalyst 502, thereby accelerating the reaction speed of the production raw materials;

[0054] S2, by starting the hydraulic cylinder 701 to drive the second lifting rod 802 to move upwards, the second lifting rod 802 can drive the first lifting plate 601 to move upwards, and then the first lifting plate 601 drives the first lifting rod 6 and the second lifting plate 602 to move upwards, so that the second lifting plate 602 drives the catalyst 502 inside the grid frame 501 to move upwards, and then the second lifting plate 602 moves downwards when the second lifting rod 802 moves downwards, so that the catalyst 502 can move downwards, so that the catalyst 502 in the grid frame 501 can be loose, avoiding the accumulation of the catalyst 502 to cause insufficient contact with the liquid reaction raw materials, thereby avoiding the phenomenon of low reaction efficiency;

[0055] S3, after the reaction is completed, the hand valve 201 is opened, and the tri-substituted aniline material in the tank body 1 can be discharged from the discharge pipe 2.

[0056] In S3, the following steps are also included:

[0057] S31, the weight of the catalyst 502 in the grid frame 501 can be measured by the pressure sensor 801, when the weight of the catalyst 502 becomes heavier than before the reaction, it means that the catalyst 502 adsorbs more material and impurities, which affects the catalytic efficiency of the catalyst 502, and the catalyst 502 needs to be replaced, by taking out the cover 3, then moving the guide frame 5 upwards can conveniently take out the grid frame 501, and then conveniently replace the catalyst 502.

[0058] Working principle: before using the trisubstituted aniline synthesis reaction tank, whether the trisubstituted aniline synthesis reaction tank exists the problem of affecting use, first of all, the catalyst 502 is placed in the grid frame 501, then the production raw materials of trisubstituted aniline are added to the inside of the tank body 1, then the cover 3 is covered on the top of the tank body 1, the motor 301 drives the grid frame 501 to rotate, and then the grid frame 501 drives the liquid production raw materials in the tank body 1 to rotate, so that the unreacted liquid production raw materials quickly contact with the catalyst 502, and the production raw materials after reaction quickly leave the catalyst 502, thereby accelerating the reaction speed of the production raw materials, by starting the hydraulic cylinder 701 to drive the second lifting rod 802 to move upwards, the second lifting rod 802 can drive the first lifting plate 601 to move upwards, and then the first lifting plate 601 drives the first lifting rod 6 and the second lifting plate 602 to move upwards, so that the second lifting plate 602 drives the catalyst 502 in the grid frame 501 to move upwards, and then the second lifting rod 802 moves downwards, and the second lifting plate 602 moves downwards again, so that the catalyst 502 can move downwards, so that the catalyst 502 in the grid frame 501 can become loose, avoiding the accumulation of catalyst 502 to cause insufficient contact with the liquid reaction raw materials, thereby avoiding the phenomenon of low reaction efficiency, after the reaction is completed, the hand valve 201 is opened, the trisubstituted aniline material in the tank body 1 can be discharged from the discharge pipe 2, and the weight of the catalyst 502 in the grid frame 501 can be measured by the pressure sensor 801, when the weight of the catalyst 502 becomes heavier than before the reaction, it indicates that the amount of catalyst 502 adsorbed material and impurities is more, which affects the catalytic efficiency of the catalyst 502, and the catalyst 502 needs to be replaced, by taking out the cover 3, then moving the guide frame 5 upwards can conveniently take out the grid frame 501, thereby facilitating the replacement of the catalyst 502.

[0059] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein and are part of the application. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. A reaction tank for synthesizing tri-substituted aniline, comprising a tank body (1), a cover body (3) and a guide frame (5), characterized in that: The top of the tank body (1) is movably provided with a cover body (3), the top of the cover body (3) is provided with a motor (301), the output end of the motor (301) is provided with a mounting rod (302), the bottom of the mounting rod (302) is symmetrically provided with a guide rod (303), the front of the tank body (1) is provided with a limiting assembly, the limiting assembly is used for limiting the cover body (3) and avoiding the upward movement of the cover body (3). The outer side of the guide rod (303) is movably provided with a guide frame (5), the back of the guide frame (5) is provided with a grid frame (501); The bottom of the tank body (1) is provided with a plurality of supporting columns (101), and the bottom of the tank body (1) is provided with a sealing ring (102) penetratingly. The inside of the grid frame (501) is movably provided with a catalyst (502); The bottom of the grid frame (501) is provided with a first lifting rod (6) penetratingly, one end of the first lifting rod (6) is provided with a first lifting plate (601), one end of the first lifting rod (6) is provided with a second lifting plate (602), and the bottom of the first lifting plate (601) is provided with a rubber pad (603). The bottom of the tank body (1) is provided with a mounting plate (7), and the bottom of the mounting plate (7) is provided with a hydraulic cylinder (701). The output end of the hydraulic cylinder (701) is provided with a guide ring (8), the bottom inner wall of the guide ring (8) is provided with a pressure sensor (801), the top of the guide ring (8) is provided with a second lifting rod (802) penetratingly, and one end of the second lifting rod (802) penetrates the top of the sealing ring (102).

2. The reaction vessel for synthesizing tri-substituted aniline according to claim 1, characterized in that: The output end of the tank body (1) is provided with a discharge pipe (2), and the output end of the discharge pipe (2) is provided with a hand valve (201).

3. The reaction vessel for synthesizing tri-substituted aniline according to claim 2, characterized in that: The limiting assembly comprises a mounting block (4), a threaded rod (401) and a limiting rod (402), the back of the mounting block (4) is connected with the front of the tank body (1), the top of the mounting block (4) is provided with the threaded rod (401) penetratingly, one end of the threaded rod (401) is provided with the limiting rod (402), and the limiting rod (402) is located above the cover body (3).

4. The method of using a tri-substituted aniline synthesis reaction vessel according to claim 3, wherein: The use method of the reaction tank for synthesizing tri-substituted aniline is as follows: S1, the catalyst (502) is placed in the grid frame (501), then the production raw materials of tri-substituted aniline are added into the tank body (1), then the cover body (3) is covered on the top of the tank body (1), the motor (301) drives the grid frame (501) to rotate, so that the grid frame (501) drives the liquid production raw materials in the tank body (1) to rotate, the unreacted liquid production raw materials quickly contact with the catalyst (502), the production raw materials after reaction quickly leave the catalyst (502), so as to accelerate the reaction speed of the production raw materials; S2, by starting the hydraulic cylinder (701) drive the second lifting rod (802) to move up, can make the second lifting rod (802) drive the first lifting plate (601) to move up, and then the first lifting plate (601) drive the first lifting rod (6) and the second lifting plate (602) to move up, so that the second lifting plate (602) drive the catalyst (502) inside the grid frame (501) to move up, and then the second lifting rod (802) down when the second lifting plate (602) will follow down, make the catalyst (502) can move down, so reciprocating, and the catalyst (502) in the grid frame (501) can become loose, avoid catalyst (502) accumulation caused by liquid reaction material not enough contact, and then avoid the phenomenon of low reaction efficiency; S3, after the reaction is completed, by opening the hand valve (201) can make the three substituted aniline material in the tank (1) inside from the discharge pipe (2) discharge.

5. The method of using a tri-substituted aniline synthesis reaction vessel of claim 4, wherein: In the S3 also includes the following steps: S31, by the pressure sensor (801) can measure the weight of the catalyst (502) inside the grid frame (501), when the weight of the catalyst (502) is heavier than before the reaction, it shows that the catalyst (502) adsorbs more material and impurities, which affects the catalytic efficiency of the catalyst (502), and the catalyst (502) needs to be replaced, by taking out the cover (3), and then moving the guide frame (5) up can conveniently take out the grid frame (501), and then facilitate the replacement of the catalyst (502).

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