A stirring reaction device for a mesotrione intermediate

Abstract

This application discloses a stirring reaction apparatus for sulfonylpyrazine intermediates, belonging to the field of sulfonylpyrazine production technology, which improves upon the problem of inconvenient temperature adjustment in stirring reaction equipment. It includes a mixing shell, with an adjustment mechanism and a filtration mechanism fixedly connected to its outer surface. The adjustment mechanism includes an insulated outer shell fixedly connected to the outer surface of the mixing shell. Multiple sets of cooling water pipes and resistance heating rods are fixedly connected inside the insulated outer shell, and a temperature sensor is fixedly connected to the inner wall of the mixing shell. This application, through cooling water pipes, resistance heating rods, temperature sensors, and related cooling and heating equipment, enables precise temperature control of the sulfonylpyrazine intermediate raw materials within the mixing shell. It can respond quickly to both excessively high and low temperatures, ensuring the reaction proceeds under suitable temperature conditions, thus improving the reaction efficiency of the intermediate raw materials and the product quality.

Description

Technical Field

[0001] This utility model relates to the field of sulfonylpyrazole production technology, and in particular to a stirring reaction device for sulfonylpyrazole intermediates. Background Technology

[0002] Sulfonazole is a novel pyrazole herbicide with highly efficient herbicidal activity, playing a vital role in modern agricultural weed control. In the production process of sulfonazole intermediates, stirring is a crucial step. Stirring ensures thorough mixing and contact of the various raw materials involved in the reaction, promoting the chemical reaction, increasing the reaction rate and the synthesis efficiency of the intermediates, and also mitigating the sulfur- and chlorine-containing acidic gases that may be generated during the sulfonazole intermediate reaction.

[0003] Because the reaction of sulfonylpyrazine intermediates is extremely sensitive to temperature, both excessively high and low temperatures can affect the reaction and even lead to side reactions, reducing the purity and yield of the intermediates. Therefore, there is a problem that stirring reaction equipment is not convenient for adjusting the temperature. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a stirring reaction device for sulfonylpyrazine intermediates.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a stirring reaction device for sulfonylpyrazol intermediates, comprising a mixing shell, an adjustment mechanism and a filtration mechanism fixedly connected to the outer surface of the mixing shell, the adjustment mechanism comprising an insulating shell fixedly connected to the outer surface of the mixing shell, multiple sets of cooling water pipes and resistance heating rods fixedly connected inside the insulating shell, and a temperature sensor fixedly connected to the inner wall of the mixing shell, a control panel fixedly connected to the outer surface of the insulating shell, and the outer surfaces of every two adjacent sets of cooling water pipes connected by a pipe, the filtration mechanism comprising a filter shell fixedly connected to the upper surface of the mixing shell, three sets of partitions fixedly connected to the inner wall of the filter shell, and a fixing plate fixedly connected to the inner wall of the filter shell, a gap being left between the lower surface of the fixing plate and the bottom of the inner wall of the filter shell, and a first filter frame and a second filter frame slidably connected to the outer surface of the filter shell.

[0008] In a preferred embodiment of the sulfonylpyrazol intermediate stirring reaction device of this utility model, the lower surface of the filter shell and the upper surface of the mixing shell are connected, and a filter screen is fixedly connected to the inner side of the first filter frame, and an activated carbon adsorption layer is fixedly connected to the inner wall of the second filter frame.

[0009] By adopting the above technical solution, the filter screen in the first filter frame facilitates the filtration of larger impurities in the gas, and the activated carbon in the second filter frame facilitates the adsorption of residual solution in the gas.

[0010] In a preferred embodiment of the sulfonylpyrazol intermediate stirring reaction device of this utility model, an air quality sensor is fixedly connected to the inner wall of the filter housing, and a second solenoid valve and a first solenoid valve are fixedly connected to the outer surface of the filter housing. A connecting pipe is fixedly connected to the air outlet of the first solenoid valve, and the other end of the connecting pipe is fixedly connected to the inner wall of the filter housing.

[0011] By adopting the above technical solution, the air quality sensor can be used to detect the air quality. Once the air quality is qualified, the second solenoid valve can be activated to discharge the gas.

[0012] In a preferred embodiment of the sulfonylpyrazol intermediate stirring reaction device of this utility model, an injection pipe is fixedly connected to the inner wall of the filter shell, and a scale line is fixedly connected to the outer surface of the filter shell.

[0013] By adopting the above technical solution, the amount of alkaline solution filling the filter housing can be easily controlled through the scale lines.

[0014] In a preferred embodiment of the sulfonylpyrazol intermediate stirring reaction device of this utility model, the lower end of the cooling water pipe is fixedly connected to a connecting frame, the upper surface of the connecting frame is fixedly connected to the lower surface of the mixing shell, a servo motor is fixedly connected to the lower surface of the mixing shell, the output shaft of the servo motor passes through the mixing shell and is fixedly connected to a rotating frame, and a stirring paddle is fixedly connected to the outer surface of the rotating frame.

[0015] By adopting the above technical solution, the output shaft of the servo motor drives the stirring paddle and the rotating frame to rotate by starting the servo motor.

[0016] In a preferred embodiment of the sulfonylpyrazol intermediate stirring reaction device of this utility model, the adjusting mechanism further includes a cooling box fixedly connected to the lower surface of the mixing shell, a water pump fixedly connected to the outer surface of the cooling box, the outlet of the water pump fixedly connected to the inner wall of the connecting frame through a pipe, a return pipe fixedly connected to the inner wall of the connecting frame, the other end of the return pipe fixedly connected to the inner wall of the cooling box, a connecting frame fixedly connected to the outer surface of the cooling box, and multiple sets of cooling fans fixedly connected to the outer surface of the connecting frame.

[0017] By adopting the above technical solution, the cooling fan is activated, and the cooling fan blows air onto the outer surface of the cooling box, thereby facilitating the cooling of the coolant inside the cooling box.

[0018] (III) Beneficial Effects

[0019] This invention provides a stirring reaction apparatus for sulfonylpyrazine intermediates. It has the following beneficial effects:

[0020] 1. Precise temperature control of the sulfonylpyrazol intermediate feedstock within the mixing shell is achieved through cooling water pipes, resistance heating rods, temperature sensors, and related cooling and heating equipment. It responds quickly to both excessively high and low temperatures, ensuring the reaction proceeds under suitable temperature conditions, thus improving the reaction efficiency of the intermediate feedstock and the quality of the product.

[0021] 2. The filtration system employs a multi-layer design, including a filter screen, sodium hydroxide and calcium chloride solutions, and an activated carbon adsorption layer, effectively removing impurities, acidic substances, and residual solutions from the reaction-produced gases. Simultaneously, the combined use of an air quality sensor and a solenoid valve enables real-time monitoring of gas quality and automatic secondary filtration, ensuring that emissions meet standards and reducing environmental pollution. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a front cross-sectional view of the overall structure of this utility model;

[0025] Figure 3 This is a side sectional view of the overall structure of this utility model;

[0026] Figure 4 This is a top-view cross-sectional structural diagram of the entire utility model.

[0027] In the diagram: 1. Mixing shell; 2. Adjustment mechanism; 201. Connecting frame; 202. Cooling tank; 203. Return pipe; 204. Insulation shell; 205. Cooling water pipe; 206. Rotating frame; 207. Stirring paddle; 208. Temperature sensor; 209. Resistance heating rod; 210. Cooling fan; 211. Servo motor; 3. Filtering mechanism; 301. Injection pipe; 302. Scale line; 303. Air quality sensor; 304. First solenoid valve; 305. Connecting pipe; 306. First filter frame; 307. Filter shell; 308. Second filter frame; 309. Second solenoid valve; 310. Partition plate; 311. Fixing plate; 4. Control panel. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the first embodiment of the present invention. This embodiment provides a stirring reaction device for sulfonylpyrazine intermediate, including a mixing shell 1. An adjustment mechanism 2 and a filtering mechanism 3 are fixedly connected to the outer surface of the mixing shell 1. The filtering mechanism 3 includes a filter housing 307 fixedly connected to the upper surface of the mixing shell 1. Three sets of partitions 310 are fixedly connected to the inner wall of the filter housing 307, and a fixing plate 311 is fixedly connected to the inner wall of the filter housing 307. A gap is left between the lower surface of the fixing plate 311 and the bottom of the inner wall of the filter housing 307, and a first filter frame 306 and a second filter frame 308 are slidably connected to the outer surface of the filter housing 307.

[0031] Specifically, the lower surface of the filter housing 307 is connected to the upper surface of the mixing housing 1, and a filter screen is fixedly connected to the inner side of the first filter frame 306. An activated carbon adsorption layer is fixedly connected to the inner wall of the second filter frame 308. An air quality sensor 303 is fixedly connected to the inner wall of the filter housing 307. A second solenoid valve 309 and a first solenoid valve 304 are fixedly connected to the outer surface of the filter housing 307. A connecting pipe 305 is fixedly connected to the air outlet of the first solenoid valve 304. The other end of the connecting pipe 305 is fixedly connected to the inner wall of the filter housing 307. An injection pipe 301 is fixedly connected to the inner wall of the filter housing 307. A scale line 302 is fixedly connected to the outer surface of the filter housing 307.

[0032] Furthermore, through cooling water pipes 205, resistance heating rods 209, temperature sensors 208, and related cooling and heating equipment, precise temperature control of the sulfonylpyrazol intermediate raw material within the mixing shell 1 can be achieved. Whether the temperature is too high or too low, a rapid response can be made to ensure the reaction proceeds under suitable temperature conditions, thereby improving the reaction efficiency of the intermediate raw material and product quality.

[0033] Example 2

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The adjustment mechanism 2 includes a heat-insulating shell 204 fixedly connected to the outer surface of the mixing shell 1. Multiple sets of cooling water pipes 205 and resistance heating rods 209 are fixedly connected inside the heat-insulating shell 204. A temperature sensor 208 is fixedly connected to the inner wall of the mixing shell 1. A control panel 4 is fixedly connected to the outer surface of the heat-insulating shell 204. The outer surfaces of every two adjacent sets of cooling water pipes 205 are connected by a pipe.

[0035] The lower end of the cooling water pipe 205 is fixedly connected to a connecting frame 201. The upper surface of the connecting frame 201 is fixedly connected to the lower surface of the mixing shell 1. A servo motor 211 is fixedly connected to the lower surface of the mixing shell 1. The output shaft of the servo motor 211 passes through the mixing shell 1 and is fixedly connected to a rotating frame 206. A stirring paddle 207 is fixedly connected to the outer surface of the rotating frame 206. The adjustment mechanism 2 also includes a cooling box 202 fixedly connected to the lower surface of the mixing shell 1. A water pump is fixedly connected to the outer surface of the cooling box 202. The outlet of the water pump is fixedly connected to the inner wall of the connecting frame 201 through a pipe. A return pipe 203 is fixedly connected to the inner wall of the connecting frame 201. The other end of the return pipe 203 is fixedly connected to the inner wall of the cooling box 202. A connecting frame is fixedly connected to the outer surface of the cooling box 202. Multiple cooling fans 210 are fixedly connected to the outer surface of the connecting frame.

[0036] The further filtration mechanism 3 employs a multi-layer filtration design, including a filter screen, sodium hydroxide and calcium chloride solutions, and an activated carbon adsorption layer, which can effectively remove impurities, acidic substances, and residual solutions from the reaction-generated gas. Simultaneously, the air quality sensor 303, in conjunction with a solenoid valve, enables real-time monitoring of gas quality and automatic secondary filtration, ensuring that the emitted gas meets standards and reducing environmental pollution.

[0037] Working Principle: When using this device, firstly, according to the scale line 302, add an appropriate amount of sodium hydroxide and calcium hydroxide solution into the filter housing 307 through the injection pipe 301, ensuring that the solution level is below the scale line 302. The temperature sensor 208 then begins real-time monitoring of the temperature of the sulfonylpyrazol intermediate raw material inside the mixing housing 1. When the temperature sensor 208 detects that the raw material temperature is too high, the control panel 4 activates the cooling fan 210 and the water pump on the outer surface of the cooling tank 202. The cooling fan 210 operates at high speed, generating a strong airflow that blows towards the outer surface of the cooling tank 202, using the airflow to remove heat from the cooling tank 202 and cool the coolant inside. Simultaneously, the water pump pumps the coolant from the cooling tank 202 into the connecting frame 201. The coolant flows along the connecting frame 201 into the cooling water pipe 205, absorbing heat from the mixing housing 1 during its flow within the cooling water pipe 205, thus cooling the sulfonylpyrazol intermediate raw material. The cooled liquid, after absorbing heat and increasing in temperature, flows back to the cooling tank 202 through the return pipe 203, forming a coolant circulation system to continuously and stably control the reaction temperature. If the temperature sensor 208 detects that the raw material temperature is too low, the operator can activate multiple sets of resistance heating rods 209 via the control panel 4. The resistance heating rods 209 heat up rapidly after being energized, heating the mixing shell 1 and raising the raw material temperature. Simultaneously with temperature adjustment, the servo motor 211 is activated. The output shaft of the servo motor 211 drives the stirring paddle 207 and the rotating frame 206 to rotate at high speed. The stirring paddle 207 rotates at high speed within the mixing shell 1, continuously agitating the sulfonylpyrazol intermediate raw material, ensuring more uniform heating and promoting a full reaction between the raw materials.

[0038] The gas produced by the reaction within the mixing housing 1 is introduced into the filter housing 307 through a pipe. First, the filter screen within the first filter frame 306 functions; its fine mesh structure effectively intercepts larger impurities in the gas, preventing them from entering subsequent processing stages. The gas, after preliminary filtration, then enters a sodium hydroxide and calcium hydroxide solution. Utilizing the chemical properties of the solution, the acidic substances in the gas undergo a neutralization reaction, removing most of the acidic and harmful components. Subsequently, the gas enters the second filter frame 308, where the activated carbon adsorption layer fixed to the inner wall of the frame begins to work. The activated carbon, with its abundant pore structure and strong adsorption capacity, adsorbs residual solution and other minute impurities in the gas, further purifying it. During the gas filtration process, the air quality sensor 303 continuously monitors the filtered gas, tracking its quality in real time. When the air quality sensor 303 detects that the gas quality is acceptable, the control panel 4 automatically activates the second solenoid valve 309, allowing the acceptable gas to exit the device through the outlet of the second solenoid valve 309. If the gas quality is found to be substandard, the control panel 4 will activate the first solenoid valve 304 to reintroduce the gas into the filter housing 307 for secondary filtration until the gas quality meets the emission standards. When the air quality sensor 303 detects continuous exceedances, the solution in the filter housing 307 can be extracted through the injection pipe 301, which facilitates the replacement of the solution in the filter housing 307.

[0039] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A stirring reaction apparatus for sulfonylpyrazine intermediates, comprising a mixing shell (1), characterized in that: An adjustment mechanism (2) and a filter mechanism (3) are fixedly connected to the outer surface of the mixing shell (1). The adjustment mechanism (2) includes a heat-insulating shell (204) fixedly connected to the outer surface of the mixing shell (1). Multiple sets of cooling water pipes (205) and resistance heating rods (209) are fixedly connected inside the heat-insulating shell (204). A temperature sensor (208) is fixedly connected to the inner wall of the mixing shell (1). A control panel (4) is fixedly connected to the outer surface of the heat-insulating shell (204). The outer surfaces of every two adjacent sets of cooling water pipes (205) are connected by a pipe. The filtration mechanism (3) includes a filter housing (307) fixedly connected to the upper surface of the mixing housing (1). The inner wall of the filter housing (307) is fixedly connected with three sets of partitions (310), and the inner wall of the filter housing (307) is fixedly connected with a fixing plate (311). A gap is left between the lower surface of the fixing plate (311) and the bottom of the inner wall of the filter housing (307), and the outer surface of the filter housing (307) is slidably connected with a first filter frame (306) and a second filter frame (308).

2. The stirring reaction apparatus for sulfonylpyrazine intermediates according to claim 1, characterized in that: The lower surface of the filter housing (307) is connected to the upper surface of the mixing housing (1), and a filter screen is fixedly connected to the inner side of the first filter frame (306), and an activated carbon adsorption layer is fixedly connected to the inner wall of the second filter frame (308).

3. The stirring reaction apparatus for sulfonylpyrazine intermediates according to claim 2, characterized in that: An air quality sensor (303) is fixedly connected to the inner wall of the filter housing (307), and a second solenoid valve (309) and a first solenoid valve (304) are fixedly connected to the outer surface of the filter housing (307). A connecting pipe (305) is fixedly connected to the air outlet of the first solenoid valve (304), and the other end of the connecting pipe (305) is fixedly connected to the inner wall of the filter housing (307).

4. The stirring reaction apparatus for sulfonylpyrazine intermediates according to claim 3, characterized in that: An injection pipe (301) is fixedly connected to the inner wall of the filter housing (307), and a scale line (302) is fixedly connected to the outer surface of the filter housing (307).

5. The stirring reaction apparatus for sulfonylpyrazol intermediate according to claim 1, characterized in that: The lower end of the cooling water pipe (205) is fixedly connected to a connecting frame (201). The upper surface of the connecting frame (201) is fixedly connected to the lower surface of the mixing shell (1). The lower surface of the mixing shell (1) is fixedly connected to a servo motor (211). The output shaft of the servo motor (211) passes through the mixing shell (1) and is fixedly connected to a rotating frame (206). The outer surface of the rotating frame (206) is fixedly connected to a stirring paddle (207).

6. The stirred reaction apparatus for sulfonylpyrazine intermediates according to claim 5, characterized in that: The adjustment mechanism (2) further includes a cooling box (202) fixedly connected to the lower surface of the mixing shell (1). A water pump is fixedly connected to the outer surface of the cooling box (202). The outlet of the water pump is fixedly connected to the inner wall of the connecting frame (201) through a pipe. A return pipe (203) is fixedly connected to the inner wall of the connecting frame (201). The other end of the return pipe (203) is fixedly connected to the inner wall of the cooling box (202). A connecting frame is fixedly connected to the outer surface of the cooling box (202). Multiple cooling fans (210) are fixedly connected to the outer surface of the connecting frame.

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