Sulfentrazone nitration reaction equipment
By introducing a stirring structure and a pressure relief tank into the nitration reaction equipment, and controlling the stirring rate and temperature regulation, the problems of temperature and pressure control are solved, ensuring reaction stability and equipment safety.
Patent Information
- Application Number
- CN202520000490.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-02
AI Technical Summary
The existing metsulfuron-methyl nitrification reactors lack temperature and pressure control measures, which leads to unstable reactions and may cause equipment damage and a decline in product quality.
A nitration reaction device including a stirring structure, a temperature control structure, and a pressure relief tank was designed. The stirring rate and temperature are controlled by a controller, and the pressure relief process ensures that the reaction proceeds under suitable conditions.
Effective control of temperature and pressure was achieved, avoiding equipment damage and product quality degradation caused by reaction instability, and improving production safety and efficiency.
Smart Images
Figure CN223697750U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metolachlor production and processing technology, specifically, it relates to a metolachlor nitrification reaction device. Background Technology
[0002] Metholatum is an important pesticide widely used in agricultural production. In the synthesis of metholatum, nitration is a crucial step that determines the quality and performance of the final product; therefore, developing efficient and stable metholatum nitration reactors is of great significance for improving production efficiency and reducing production costs.
[0003] The prior art discloses a metolachlor nitrification reactor (CN216630774U). One side of the homogenizer is connected to a first inlet, a second inlet, and a circulation inlet. The outlet on the other side of the homogenizer is connected to the feed inlet of a static mixer via a connecting pipe. A water pump is installed on the connecting pipe. The discharge port of the static mixer is connected to the feed inlet of the nitrification reactor via a pipe. The side of the nitrification reactor is provided with a circulation outlet, which is connected to the circulation inlet via a circulation pipe. A tubular reactor is installed on the circulation pipe. A feed pipe is connected to the circulation pipe via a tee connector. The nitrification reactor is connected to a maturation reactor, and the discharge port of the maturation reactor is connected to a reaction liquid transfer tank via a pipe.
[0004] The search revealed that existing technologies lack temperature control and pressure relief measures for the equipment, which can easily lead to unstable temperatures during the nitration reaction. Both excessively high and low temperatures can cause the reaction to run out of control or the product quality to decline. Furthermore, under certain conditions, the metsulfuron-methyl nitration reaction should be carried out at atmospheric pressure or slightly above atmospheric pressure. The lack of pressure regulation measures can easily lead to excessive pressure during the exothermic nitration reaction, resulting in equipment damage or safety hazards.
[0005] In view of this, this utility model is hereby proposed. Utility Model Content
[0006] To solve the aforementioned technical problem of uncontrollable temperature and pressure, the basic concept of the technical solution adopted by this utility model is as follows:
[0007] A metsulfuron-methyl nitrification reaction apparatus, including
[0008] A nitrification cylinder, with a pressure relief tank on one side and a steam output box on the other side, and a controller electrically installed on the top of the nitrification cylinder;
[0009] A stirring structure is rotatably disposed inside a nitration cylinder. The stirring structure includes a rotating shaft and stirring blades. The rotating shaft is rotatably disposed inside the nitration cylinder, and the stirring blades are fixedly disposed on the curved surface of the rotating shaft.
[0010] A temperature regulating structure is provided, which is located between the nitration tank and the steam output box. The temperature regulating structure includes a gas valve and a circulation pipe. The circulation pipe is installed inside the nitration tank, and the gas valve is located between the circulation pipe and the steam output box. The controller signal controls the gas valve.
[0011] In a preferred embodiment of this utility model, the top of the nitrification cylinder is provided with a feed pipe for pouring metsulfuron-methyl, and a feed valve is installed on the feed pipe. The bottom of the nitrification cylinder is provided with a discharge pipe for discharging nitrates, and a discharge valve is installed on the discharge pipe. The controller signal is connected to the discharge valve and the feed valve.
[0012] In a preferred embodiment of this utility model, a pressure relief pipe is fixedly installed between the top of the nitration cylinder and the top of the pressure relief tank. A gas component control device is installed inside the pressure relief tank. A safety valve and a one-way valve are respectively installed at both ends of the pressure relief pipe. A pressure sensor is installed inside the nitration cylinder. The controller signal is connected to the gas component control device and the pressure sensor. The pressure sensor is electrically connected to the safety valve.
[0013] In a preferred embodiment of this utility model, two one-way air valves are provided, and an exhaust pipe for discharging waste gas is provided at the bottom of the pressure relief tank. The exhaust pipe is connected to the pressure relief tank through another one-way air valve.
[0014] In a preferred embodiment of this utility model, a temperature sensor is installed on the nitration cylinder, the controller signal is connected to the temperature sensor, the temperature sensor signal is connected to the gas valve, a temperature control chamber is opened inside the nitration cylinder, the circulation pipe is set in the temperature control chamber, and the circulation pipe is connected to the steam output box through the gas valve.
[0015] In a preferred embodiment of this utility model, the top surface of the steam output box is provided with a water supply pipe for adding water, the top surface of the nitration cylinder is fixedly installed with a stirring motor, the output end of the stirring motor is connected to the top of the rotating shaft, and the controller is electrically connected to the stirring motor.
[0016] In a preferred embodiment of this utility model, the stirring blade is composed of multiple vortex blades, and two stirring blades are provided. The two stirring blades are arranged symmetrically from top to bottom, and the two stirring blades are fixedly arranged on the curved surface of the same rotating shaft.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] 1. By setting up a stirring structure and a temperature regulation structure, the stirring speed of the stirring blades is controlled by the controller, thereby controlling the rate of the nitration reaction. In conjunction with the temperature regulation structure, the temperature inside the nitration tank can be adjusted at any time, thus avoiding the impact of temperature instability.
[0019] 2. By setting up a stirring structure and a pressure relief tank, when the pressure inside the nitration tank changes, the stirring speed of the stirring structure is adjusted, and the pressure relief tank is used to relieve pressure inside the nitration tank, thereby avoiding equipment damage and safety hazards caused by excessive pressure.
[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0021] In the attached diagram:
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a partial structural cross-sectional schematic diagram of the present invention;
[0024] Figure 3 This is a schematic diagram of the stirring structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the temperature regulation structure of this utility model;
[0026] Figure 5 This is a schematic diagram of the usage state of this utility model.
[0027] In the diagram: 10. Nitrification cylinder; 11. Feed pipe; 12. Discharge pipe; 13. Discharge valve; 14. Feed valve; 15. Steam output box; 16. Water supply pipe; 17. Pressure relief pipe; 18. Safety valve; 19. Pressure relief tank; 20. One-way gas valve; 21. Gas component control device; 22. Gas outlet pipe; 23. Temperature sensor; 24. Gas valve; 25. Temperature control chamber; 26. Circulation pipe; 27. Stirring motor; 28. Rotary shaft; 29. Stirring blade; 30. Pressure sensor. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0029] A metsulfuron-methyl nitrification reaction device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a nitrification cylinder 10, a pressure relief tank 19 on one side of the nitrification cylinder 10, a steam output box 15 on the other side of the pressure relief tank 19, and a controller electrically mounted on the top of the nitrification cylinder 10; a stirring structure, which is rotatably mounted inside the nitrification cylinder 10, including a rotating shaft 28 and stirring blades 29, with the rotating shaft 28 rotatably mounted inside the nitrification cylinder 10 and the stirring blades 29 fixedly mounted on the curved surface of the rotating shaft 28; and a temperature regulating structure, which is located between the nitrification cylinder 10 and the steam output box 15. The temperature regulating structure includes a gas valve 24 and a circulation pipe 26, with the circulation pipe 26 installed inside the nitrification cylinder 10 and the gas valve 24 located between the circulation pipe 26 and the steam output box 15, and the controller signal controlling the gas valve 24.
[0030] Specifically, the stirring speed of the stirring blade 29 is controlled by the controller, thereby controlling the rate of the nitration reaction. In conjunction with the temperature regulation structure, the temperature inside the nitration tank 10 can be adjusted at any time to avoid the effects caused by temperature instability. When the pressure inside the nitration tank 10 changes, the stirring speed of the stirring structure is adjusted, and the pressure relief tank 19 is used to relieve the pressure inside the nitration tank 10, thereby avoiding equipment damage and safety hazards caused by excessive pressure.
[0031] like Figure 1 and Figure 5 As shown, the top of the nitrification cylinder 10 is equipped with a feed pipe 11 for pouring metsulfuron-methyl, and a feed valve 14 is installed on the feed pipe 11. The bottom of the nitrification cylinder 10 is equipped with a discharge pipe 12 for discharging nitrated products, and a discharge valve 13 is installed on the discharge pipe 12. The controller signal is connected to the discharge valve 13 and the feed valve 14; Figure 3 , Figure 4 and Figure 5 As shown, a water supply pipe 16 for adding water is provided on the top surface of the steam output box 15, and a stirring motor 27 is fixedly installed on the top surface of the nitration cylinder 10. The output end of the stirring motor 27 is connected to the top of the rotating shaft 28, and the controller is electrically connected to the stirring motor 27; Figure 3 As shown, the stirring blade 29 is composed of multiple vortex blades. There are two stirring blades 29, which are arranged symmetrically from top to bottom. The two stirring blades 29 are fixedly mounted on the curved surface of the same rotating shaft 28.
[0032] Specifically, the controller controls the opening and closing of the stirring motor 27, the feed valve 14, and the discharge valve 13. During use, the controller controls the feed valve 14 to open and the discharge valve 13 to close. Then, the mesotrione intermediate solution and nitrifying agent are added into the feed pipe 11. The feed valve 14 is closed, the stirring motor 27 is started, and clean water is added into the water supply pipe 16 to the steam output box 15. The stirring motor 27 drives the rotating shaft 28 and the two stirring blades 29 to rotate. At this time, the two symmetrically arranged stirring blades 29 mix and stir the mesotrione intermediate solution and nitrifying agent.
[0033] like Figure 1 , Figure 2 and Figure 5 As shown, a pressure relief pipe 17 is fixedly installed between the top of the nitration cylinder 10 and the top of the pressure relief tank 19. A gas component control device 21 is installed inside the pressure relief tank 19. A safety valve 18 and a one-way valve 20 are respectively installed at both ends of the pressure relief pipe 17. A pressure sensor 30 is installed inside the nitration cylinder 10. The controller signal is connected to the gas component control device 21 and the pressure sensor 30. The pressure sensor 30 is electrically connected to the safety valve 18. Figure 1 As shown, two one-way valves 20 are provided. The bottom of the pressure relief tank 19 is equipped with an exhaust pipe 22 for discharging exhaust gas. The exhaust pipe 22 is connected to the pressure relief tank 19 via another one-way valve 20. Figure 2 , Figure 4 and Figure 5 As shown, a temperature sensor 23 is installed on the nitrification cylinder 10. The controller signal is connected to the temperature sensor 23, and the temperature sensor 23 signal is connected to the gas valve 24. A temperature control chamber 25 is opened inside the nitrification cylinder 10. A circulation pipe 26 is set in the temperature control chamber 25. The circulation pipe 26 is connected to the steam output box 15 through the gas valve 24.
[0034] Specifically, when the controller controls the stirring motor 27 to drive the rotating shaft 28 and the two stirring blades 29 to rotate, the two symmetrically arranged stirring blades 29 mix and stir the mesotrione intermediate solution and the nitrifying agent. At this time, the gas valve 24 is opened, and the steam output box 15 transmits steam to the circulation pipe 26 through the gas valve 24. The heat of the steam heats the inside of the nitrification tank 10. The temperature sensor 23 provides real-time feedback on the temperature data inside the nitrification tank 10 to ensure that the reaction takes place within a suitable temperature range. If the temperature is too high or too low, the temperature sensor 23 immediately transmits a signal to the controller, which then immediately adjusts the input or output of steam in the gas valve 24. At the same time, the pressure sensor 30 monitors the pressure changes in the nitrification tank 10. If the pressure is too high, a signal is transmitted to the safety valve 18 for pressure relief. The gas entering the pressure relief tank 19 is monitored by the gas component control device 21, and the appropriate components are discharged through the one-way gas valve 20 from the gas outlet pipe 22.
[0035] It is worth noting that the safety valve 18 used in this device is used for pressure relief and discharge during the nitration reaction in the nitration tank 10, and also serves as an alarm in the gas dynamic sound generated by the pressure relief of the safety valve 18; the gas component control device 21 is used to monitor and control the gas components in the pressure relief tank 19 to ensure that they are within a safe range; the temperature sensor 23 is used to monitor the temperature change inside the nitration tank 10 during the nitration reaction; and the pressure sensor 30 is used to monitor the pressure change inside the nitration tank 10.
[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A metsulfuron-methyl nitrification reaction apparatus, characterized in that, include A nitrification cylinder (10) is provided with a pressure relief tank (19) on one side and a steam output box (15) on the other side of the pressure relief tank (19). A controller is electrically provided on the top of the nitrification cylinder (10). A stirring structure is rotatably disposed inside a nitration cylinder (10). The stirring structure includes a rotating shaft (28) and stirring blades (29). The rotating shaft (28) is rotatably disposed inside a nitration cylinder (10), and the stirring blades (29) are fixedly disposed on the curved surface of the rotating shaft (28). A temperature regulating structure is provided between the nitrification cylinder (10) and the steam output box (15). The temperature regulating structure includes a gas valve (24) and a circulation pipe (26). The circulation pipe (26) is installed inside the nitrification cylinder (10). The gas valve (24) is provided between the circulation pipe (26) and the steam output box (15). The controller signal controls the gas valve (24).
2. The metolachlor nitrification reaction equipment according to claim 1, characterized in that, The top of the nitrification cylinder (10) is provided with a feed pipe (11) for pouring mesotriamine, and a feed valve (14) is installed on the feed pipe (11). The bottom of the nitrification cylinder (10) is provided with a discharge pipe (12) for discharging nitrates, and a discharge valve (13) is installed on the discharge pipe (12). The controller signal is connected to the discharge valve (13) and the feed valve (14).
3. The metsulfuron-methyl nitrification reaction equipment according to claim 1, characterized in that, A pressure relief pipe (17) is fixedly installed between the top of the nitration cylinder (10) and the top of the pressure relief tank (19). A gas component control device (21) is installed inside the pressure relief tank (19). A safety valve (18) and a one-way valve (20) are respectively installed at both ends of the pressure relief pipe (17). A pressure sensor (30) is installed inside the nitration cylinder (10). The controller signal is connected to the gas component control device (21) and the pressure sensor (30). The pressure sensor (30) is electrically connected to the safety valve (18).
4. The metsulfuron-methyl nitrification reaction equipment according to claim 3, characterized in that, Two one-way air valves (20) are provided. The bottom of the pressure relief tank (19) is provided with an exhaust pipe (22) for discharging waste gas. The exhaust pipe (22) is connected to the pressure relief tank (19) through another one-way air valve (20).
5. The metsulfuron-methyl nitrification reaction equipment according to claim 1, characterized in that, A temperature sensor (23) is installed on the nitrification cylinder (10). The controller signal is connected to the temperature sensor (23). The temperature sensor (23) signal is connected to the gas valve (24). A temperature control chamber (25) is opened inside the nitrification cylinder (10). The circulation pipe (26) is set in the temperature control chamber (25). The circulation pipe (26) is connected to the steam output box (15) through the gas valve (24).
6. The metsulfuron-methyl nitrification reaction equipment according to claim 1, characterized in that, The top surface of the steam output box (15) is provided with a water supply pipe (16) for adding water source. The top surface of the nitrification cylinder (10) is fixedly installed with a stirring motor (27). The output end of the stirring motor (27) is connected to the top of the rotating shaft (28). The controller is electrically connected to the stirring motor (27).
7. The metsulfuron-methyl nitrification reaction equipment according to claim 1, characterized in that, The stirring blade (29) is composed of multiple vortex blades. There are two stirring blades (29), which are arranged symmetrically up and down. The two stirring blades (29) are fixedly arranged on the curved surface of the same rotating shaft (28).
Citation Information
Patent Citations
Sulfentrazone nitration reaction device
CN216630774U