A stirred reactor and method for synthesizing clomazone

Abstract

The present invention discloses a stirred reactor for synthesizing clomazone and a method thereof, specifically relating to the field of clomazone synthesis. The reactor comprises a barrel, a feed port, a support plate, and legs. The barrel has a feed port at the top, a support plate mounted on the bottom of the barrel, and multiple legs mounted on the bottom of the support plate. A baffle is welded inside the barrel, a stirring mechanism is connected to one side of the baffle, the top of the stirring mechanism is mounted on the top of the barrel, a bracket is welded to the top of the barrel, an extrusion mechanism is mounted on the bracket, and the bottom of the extrusion mechanism communicates with the interior of the barrel. A discharge pipe is mounted at the bottom of the barrel, an anti-blocking pipe is welded to the bottom of the discharge pipe, and a filter plate is mounted inside the discharge pipe. The present invention has the advantages of preventing the generation of sticking particles, pulverizing sticking particles, ensuring sufficient mixing between the material and the solution, high stirring efficiency, facilitating the addition of the solution, facilitating the filtration of solid particles generated during the reaction to achieve solid-liquid separation, and facilitating cleaning of the reactor.

Description

Technical Field

[0001] The present invention relates to the technical field of clomazone synthesis, and more particularly to a stirred reactor and a method for synthesizing clomazone. Background Art

[0002] Clomazone is a pigment-inhibiting pre-emergence herbicide that inhibits the production of chlorophyll and its protective pigments in plants, causing their death in a short period of time. However, once absorbed by soybeans, clomazone's effective herbicidal properties are metabolized into ineffective degradation products, protecting soybean plants from damage. Clomazone primarily controls broadleaf weeds and grass weeds. Besides soybean fields, it can also be used for weed control in cotton, cassava, corn, rapeseed, sugarcane, and tobacco fields. During the clomazone synthesis process, the stirred reactor must be agitated to improve production efficiency.

[0003] The utility model patent application with publication number CN214288198U discloses a synthetic stirring reaction device for isoxazolidinone, comprising a reactor and a stirring device, wherein the stirring device comprises a first rotating shaft, one end of the first rotating shaft being movably connected to the output end of a stirring motor, the other end of the first rotating shaft being rotatably connected to a second rotating shaft, and the surface of the second rotating shaft being fixedly connected to a sleeve. The utility model provides a stirring device. When material enters the reactor from a feed hopper, the stirring motor is turned on, driving the first rotating shaft to rotate, water enters the reactor from a water inlet pipe, and the amount of water is controlled according to the display of a liquid level sensor. The first and second stirring blades provided on the surface of the sleeve also rotate with the sleeve to complete the mixing and stirring of the material and water. Most existing synthetic stirring reaction devices for isoxazolidinone use chemical methods for stirring, which greatly reduces work efficiency. The application of this device avoids the above-mentioned problems and effectively improves the practicality of the device.

[0004] However, in actual use, this structure can only achieve stirring of the material and water. Therefore, during the synthesis of clomazone, the solid particles in the material adhere together. When mixed with the solution, the solid particles are encapsulated by the outer particles, resulting in a reduced reaction rate and a less-than-complete reaction. Furthermore, the liquid in the bottom filter device leaks out to the bottom prematurely before the reaction is complete, resulting in insufficient mixing with the material in the top reactor. Therefore, a stirred reactor and method for synthesizing clomazone are proposed. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, the present invention provides a stirred reactor and method for synthesizing clomazone, thereby resolving the problem, as mentioned in the background art, that only stirring of the materials and water can be achieved. Consequently, during the synthesis of clomazone, solid particles in the materials adhere to each other. When mixed with the solution, the solid particles are encapsulated by the outer particles, resulting in a reduced reaction rate and difficulty in achieving a full reaction. Furthermore, liquid from the bottom filter device leaks out to the bottom prematurely before the reaction is complete, resulting in insufficient mixing with the materials in the top reactor.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a stirred reactor for the synthesis of isopropylamine, comprising a barrel body, a feed inlet, a support plate, and legs, wherein the feed inlet is provided at the top of the barrel body, the support plate is supported and mounted at the bottom of the barrel body, a plurality of legs are mounted at the bottom of the support plate, a baffle is welded inside the barrel body, a stirring mechanism is connected to one side of the baffle, the top of the stirring mechanism is mounted on the top of the barrel body, a bracket is welded to the top of the barrel body, an extrusion mechanism is mounted on the bracket, the bottom end of the extrusion mechanism is communicated with the interior of the barrel body, a discharge pipe is mounted at the bottom of the barrel body, an anti-blocking pipe is welded to the bottom end of the discharge pipe, and a filter plate is mounted inside the discharge pipe.

[0007] Preferably, leakage holes are evenly opened on the baffle, and the baffle is welded to the inner wall on one side of the middle part of the barrel body.

[0008] Preferably, the stirring mechanism includes a motor, which is mounted on the top of the barrel;

[0009] A rotating rod, the top end of which is connected to the motor and the bottom end of which is inserted into the barrel;

[0010] A stirring blade is installed on the rotating rod;

[0011] A plurality of crushing rods are uniformly welded on both sides of the stirring blade, and each crushing rod is matched with a leakage hole opened on the baffle.

[0012] When the stirring mechanism stirs and crushes the mixed material inside the barrel, the motor runs, causing the rotating rod to rotate, thereby causing the stirring blade on the rotating rod to rotate clockwise and connect with one side of the baffle, so that the crushing rod is inserted into the leak hole, thereby reducing the gap between the stirring blade and the baffle, squeezing and crushing the material attached between the stirring blade and the baffle, so that the material is dissolved in the solution and fully reacts. Then, as the motor runs, the rotating rod rotates counterclockwise, causing the stirring blade to connect with the other side of the baffle, and the cycle continues.

[0013] Preferably, a plurality of leakage holes are evenly formed on the stirring blade, and the plurality of leakage holes and the plurality of crushing rods are cross-arranged.

[0014] Preferably, the squeezing mechanism includes a telescopic rod, the top end of which is mounted on the bracket;

[0015] The liquid storage barrel is connected to the bottom end of the telescopic rod, and the bottom end of the liquid storage barrel is supported by the top of the barrel body and communicates with the interior of the barrel body;

[0016] The piston is slidably installed in the liquid storage barrel and is connected to the bottom end of the telescopic rod.

[0017] During the process of squeezing the reaction solution into the barrel, the telescopic rod extends, causing the piston at the bottom to squeeze the reaction solution in the liquid barrel, thereby allowing the reaction solution to enter the barrel. The amount of reaction solution entering the barrel can be controlled by controlling the extension and contraction amount of the telescopic rod.

[0018] Preferably, the discharge pipe is S-shaped, and a stop valve is installed at the connection between the discharge pipe and the bottom end of the barrel body and on the anti-blocking pipe.

[0019] Preferably, the bottom end of the barrel is funnel-shaped and the inner wall is smooth, so that the solution after the reaction can flow into the discharge pipe from the bottom.

[0020] A synthetic stirring method for clomazone, comprising the following specific steps:

[0021] S1: First, slowly put the powdered material into the feed port. At the same time, the extrusion mechanism operates to squeeze the solution in the liquid barrel into the barrel body.

[0022] S2: When the powdered material and the solution enter the barrel at the same time, the stirring mechanism is started to stir the mixed solution, and during the stirring process, the powdered material adhering to each other is crushed and fully mixed with the solution;

[0023] S3: After all the materials are put into the barrel, the stirring mechanism stirs the solution inside for a certain period of time, then opens the stop valve on the discharge pipe and collects the prepared solution from one end of the discharge pipe;

[0024] S4: During the process of receiving the solution, the filter plate filters the granular objects entering the discharge pipe and collects them at the bottom of the bend of the discharge pipe;

[0025] S5: After the prepared solution is taken, close the stop valve on the discharge pipe, open the stop valve installed on the anti-blocking pipe, and release the solid waste particles in the discharge pipe;

[0026] S6: After the solid waste particles are processed, open the stop valve on the discharge pipe, flush water into the barrel from the feed port, and operate the stirring mechanism to clean the inside of the barrel. During the cleaning process, the waste water is discharged from the anti-blocking pipe.

[0027] Technical effects and advantages of the present invention:

[0028] 1. Compared with the prior art, the stirring mechanism and the baffle are combined to not only stir the mixed solution in the barrel, allowing the solution to fully mix and react, but also, in conjunction with the baffle, pulverize any adhering powder materials, improving the degree of material fusion, thereby making the clomazone prepared after the reaction purer.

[0029] 2. Through the coordinated arrangement of the extrusion mechanism and the feed port, compared with the prior art, the feed port can be used to place powdered materials, and the extrusion mechanism can squeeze the reaction solution into the barrel, so that the solid and liquid are separated and placed, making it easier to control the ratio of materials placed and perform synchronous reactions. In addition, the extrusion mechanism can replenish the reaction solution to prevent insufficient reaction in the barrel.

[0030] 3. Compared with existing technologies, the arrangement of the discharge pipe, the anti-blocking pipe, and the filter plate makes it easier to discharge the clomazone prepared after the reaction. During the discharge process, the filter plate filters the clomazone solution to achieve solid-liquid separation, making the prepared clomazone purer. The filtered impurities are temporarily stored in the anti-blocking pipe. Opening the anti-blocking pipe facilitates centralized processing of solid particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a schematic side view of the three-dimensional structure of the present invention.

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0034] Figure 4 It is a structural schematic diagram of the stirring mechanism of the present invention.

[0035] Figure 5 It is a structural schematic diagram of the extrusion mechanism of the present invention.

[0036] Figure 6 It is a schematic diagram of the connection structure between the discharge pipe and the barrel body of the present invention.

[0037] Figure 7 It is a schematic diagram of the cross-sectional structure of the discharge pipe of the present invention.

[0038] The accompanying drawings are marked as follows: 1. barrel body; 2. feed port; 3. stirring mechanism; 301. motor; 302. rotating rod; 303. stirring blade; 304. crushing rod; 4. bracket; 5. extrusion mechanism; 501. telescopic rod; 502. liquid barrel; 503. piston; 6. support plate; 7. support leg; 8. discharge pipe; 9. anti-blocking pipe; 10. baffle; 11. filter plate. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0040] As attached Figure 1-7 The illustrated stirred reactor for the synthesis of clomazone comprises a barrel 1, a feed inlet 2, a support plate 6, and legs 7. The feed inlet 2 is provided at the top of the barrel 1, the support plate 6 is supported and mounted at the bottom of the barrel 1, and a plurality of legs 7 are mounted at the bottom of the support plate 6. A baffle 10 is welded inside the barrel 1, and a stirring mechanism 3 is connected to one side of the baffle 10. The top of the stirring mechanism 3 is mounted on the top of the barrel 1, a bracket 4 is welded to the top of the barrel 1, an extrusion mechanism 5 is mounted on the bracket 4, and the bottom end of the extrusion mechanism 5 is communicated with the interior of the barrel 1. A discharge pipe 8 is mounted at the bottom of the barrel 1, an anti-blocking pipe 9 is welded to the bottom end of the discharge pipe 8, and a filter plate 11 is mounted inside the discharge pipe 8.

[0041] As attached Figure 3 and Figure 4 As shown, leakage holes are evenly opened on the baffle 10, and the baffle 10 is welded to the inner wall of one side of the middle part of the barrel body 1.

[0042] As attached Figure 3 and Figure 4 As shown, the stirring mechanism 3 includes a motor 301, which is mounted on the top of the barrel 1;

[0043] A rotating rod 302, the top end of which is connected to the motor 301 and the bottom end of which is inserted into the barrel body 1;

[0044] A stirring blade 303, the stirring blade 303 is installed on the rotating rod 302;

[0045] A plurality of crushing rods 304 are uniformly welded to both sides of the stirring blade 303 , and each crushing rod 304 cooperates with a leakage hole opened on the baffle 10 .

[0046] When the stirring mechanism 3 stirs and crushes the mixed material inside the barrel body 1, the motor 301 runs, causing the rotating rod 302 to rotate, so that the stirring blade 303 on the rotating rod 302 rotates clockwise and connects with one side of the baffle 10, so that the crushing rod 304 is inserted into the leak hole, thereby reducing the gap between the stirring blade 303 and the baffle 10, squeezing and crushing the material attached between the stirring blade 303 and the baffle 10, so that the material is dissolved in the solution and fully reacts. Then, as the motor 301 runs, the rotating rod 302 rotates counterclockwise, so that the stirring blade 303 connects with the other side of the baffle 10, and the cycle is repeated.

[0047] As attached Figure 3 and Figure 4 As shown, a plurality of leakage holes are evenly formed on the stirring blade 303 , and the plurality of leakage holes and the plurality of crushing rods 304 are arranged crosswise.

[0048] As attached Figure 1 、 Figure 2 and Figure 5 As shown, the squeezing mechanism 5 includes a telescopic rod 501, the top end of which is mounted on the bracket 4;

[0049] The liquid storage barrel 502 is connected to the bottom end of the telescopic rod 501, and the bottom end of the liquid storage barrel 502 is supported by the top of the barrel body 1 and communicates with the interior of the barrel body 1;

[0050] The piston 503 is slidably mounted in the liquid storage barrel 502 and is connected to the bottom end of the telescopic rod 501 .

[0051] During the process of squeezing the reaction solution into the barrel body 1 , the telescopic rod 501 extends, causing the piston 503 at the bottom end to squeeze the reaction solution in the liquid storage barrel 502 , thereby allowing the reaction solution to enter the barrel body 1 . The amount of reaction solution entering the barrel body 1 can be controlled by controlling the extension and contraction amount of the telescopic rod 501 .

[0052] As attached Figure 1 、 Figure 2 and Figure 7 As shown, the discharge pipe 8 is S-shaped, and a stop valve is installed at the connection between the discharge pipe 8 and the bottom end of the barrel body 1 and on the anti-blocking pipe 9.

[0053] As attached Figure 3 and Figure 6 As shown, the bottom end of the barrel body 1 is funnel-shaped and the inner wall is smooth, so that the solution after the reaction can flow into the discharge pipe 8 from the bottom.

[0054] A synthetic stirring method for clomazone, comprising the following specific steps:

[0055] S1: First, the powdered material is slowly put into the feed port 2. At the same time, the extrusion mechanism 5 operates to squeeze the solution in the liquid storage barrel 502 into the barrel body 1;

[0056] S2: When the powdered material and the solution enter the barrel 1 at the same time, the stirring mechanism 3 is started to operate, and the stirring mechanism 3 stirs the mixed solution. During the stirring process, the powdered material adhering to each other is crushed and fully mixed with the solution;

[0057] S3: After all the materials are put into the barrel 1, the stirring mechanism 3 stirs the solution inside for a certain period of time, then opens the stop valve on the discharge pipe 8 and takes the prepared solution from one end of the discharge pipe 8;

[0058] S4: During the process of receiving the solution, the filter plate 11 filters the granular objects entering the discharge pipe 8 and collects them at the bent bottom of the discharge pipe 8;

[0059] S5: After the prepared solution is taken, close the stop valve on the discharge pipe 8, open the stop valve installed on the anti-blocking pipe 9, and release the solid waste particles in the discharge pipe 8;

[0060] S6: After the solid waste particles are processed, the stop valve on the discharge pipe 8 is opened, and water is flushed into the barrel body 1 from the feed port 2, and the stirring mechanism 3 is operated to clean the inside of the barrel body 1. During the cleaning process, the waste water is discharged from the anti-blocking pipe 9.

[0061] The working principle of the present invention is as follows: during the synthesis and preparation of clomazone, solid powder and reaction solution are added to the barrel body 1 from the feed port 2 and the extrusion mechanism 5, respectively. During the addition process, the stirring mechanism 3 stirs the mixed solution in the barrel body 1. During the stirring process, the stirring blade 303 rotates clockwise and counterclockwise in sequence, connects with one side of the baffle 10, and then flips over to connect with the other side of the baffle 10, and this cycle continues. During the connection between the stirring blade 303 and the baffle 10, the crushing rod 304 cooperates and is inserted into the leakage hole provided in the baffle 10, so that the powder particles generated between the stirring blade 303 and the baffle 10 are crushed, thereby fully mixing the powder material and the solution.

[0062] After the mixed material is stirred for a certain period of time and the materials in the solution are fully mixed and reacted, the stop valve on the discharge pipe 8 is opened, and the prepared clomazone is collected from one end of the discharge pipe 8. As the clomazone passes through the discharge pipe 8, the solid particles inside are filtered by the filter plate 11 and temporarily stored in the anti-blocking pipe 9. After the clomazone is collected, the stop valve on the anti-blocking pipe 9 is opened, and the solid particles inside are centrally processed. After the solid particles are processed, water is poured into the feed port 2, and the interior of the barrel 1 is cleaned with the cooperation of the stirring mechanism 3. The cleaning wastewater is then discharged from the anti-blocking pipe 9.

[0063] The present invention has the advantages of preventing the generation of sticky particles, crushing the sticky particles, allowing the material and the solution to be fully mixed, having high stirring efficiency, facilitating the addition of the solution, facilitating the filtering of solid particles generated in the reaction, achieving solid-liquid separation, and facilitating the cleaning of the reactor.

[0064] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0065] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0066] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stirred reactor for the synthesis of clomazone, comprising a barrel (1), a feed inlet (2), a support plate (6) and legs (7), wherein the top of the barrel (1) is provided with the feed inlet (2), the bottom of the barrel (1) is supported and mounted with the support plate (6), and the bottom of the support plate (6) is mounted with a plurality of legs (7), characterized in that: A baffle (10) is welded inside the barrel body (1), and a stirring mechanism (3) is connected to one side of the baffle (10). The top of the stirring mechanism (3) is installed on the top of the barrel body (1). A bracket (4) is welded to the top of the barrel body (1), and an extrusion mechanism (5) is installed on the bracket (4). The bottom end of the extrusion mechanism (5) is communicated with the inside of the barrel body (1). A discharge pipe (8) is installed at the bottom end of the barrel body (1), and an anti-blocking pipe (9) is welded to the bottom end of the discharge pipe (8). A filter plate (11) is installed inside the discharge pipe (8); The baffle (10) is evenly provided with leakage holes, and the baffle (10) is welded to the inner wall of one side of the middle portion of the barrel body (1); The stirring mechanism (3) comprises a motor (301), the motor (301) being mounted on the top of the barrel (1); a rotating rod (302), the top of the rotating rod (302) being connected to the motor (301), and the bottom of the rotating rod (302) being inserted into the barrel (1); a stirring blade (303), the stirring blade (303) being mounted on the rotating rod (302); a plurality of crushing rods (304), each of the crushing rods (304) being uniformly welded to both sides of the stirring blade (303), and each crushing rod (304) being matched with a leakage hole provided on the baffle (10); a plurality of leakage holes being uniformly provided on the stirring blade (303), and the plurality of leakage holes and the plurality of crushing rods (304) being arranged crosswise; The squeezing mechanism (5) comprises a telescopic rod (501), the top end of the telescopic rod (501) being mounted on the bracket (4); a liquid storage barrel (502), the liquid storage barrel (502) being connected to the bottom end of the telescopic rod (501), and the bottom end of the liquid storage barrel (502) being supported by the top of the barrel body (1) and communicating with the interior of the barrel body (1); a piston (503), the piston (503) being slidably mounted in the liquid storage barrel (502) and connected to the bottom end of the telescopic rod (501); the discharge pipe (8) being S-shaped, and a stop valve being mounted at the connection between the discharge pipe (8) and the bottom end of the barrel body (1) and on the anti-blocking pipe (9).

2. The stirred reactor for synthesizing clomazone according to claim 1, characterized in that: The bottom end of the barrel body (1) is funnel-shaped, and the inner wall is smooth.

3. A method for synthesizing and stirring clomazone in a stirred reactor for synthesizing clomazone according to any one of claims 1 to 2, characterized in that: The specific steps are: S1: First, the powdered material is slowly introduced into the feed port (2). At the same time, the extrusion mechanism (5) operates to squeeze the solution in the liquid storage barrel (502) into the barrel body (1); S2: When the powdered material and the solution enter the barrel (1) at the same time, the stirring mechanism (3) is started to operate, and the stirring mechanism (3) stirs the mixed solution, and in the process of stirring, the powdered material adhering to each other is crushed and fully mixed with the solution; S3: After all the materials are put into the barrel (1), the stirring mechanism (3) stirs the solution inside for a certain period of time, then opens the stop valve on the discharge pipe (8) and collects the prepared solution from one end of the discharge pipe (8); S4: During the process of receiving the solution, the filter plate (11) filters the granular objects entering the discharge pipe (8) and collects them at the bent bottom of the discharge pipe (8); S5: After the prepared solution is collected, the stop valve on the discharge pipe (8) is closed, and the stop valve installed on the anti-blocking pipe (9) is opened to discharge the solid waste particles in the discharge pipe (8); S6: After the solid waste particles are processed, the stop valve on the discharge pipe (8) is opened, and water is flushed into the barrel (1) from the feed port (2), and the stirring mechanism (3) is operated to clean the inside of the barrel (1). During the cleaning process, the waste water is discharged from the anti-blocking pipe (9).

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