Reaction purification system for crude acetonitrile

Abstract

The utility model provides a reaction purification system for crude acetonitrile. According to the reaction and purification system for the crude acetonitrile, a reaction tank is mounted at the position, close to one side, of the top of a bottom plate, a stirring assembly is mounted at the top of the reaction tank, a filtering assembly is mounted in the middle of the top of the bottom plate, and a purification tank is mounted at the position, close to the other side, of the top of the bottom plate through a mounting frame; a top cover is mounted at the top of the purification tank, a driving assembly is mounted at the top of the top cover, a purification frame is mounted at the output end of the driving assembly through a supporting frame, and a filtering frame is mounted in the purification tank through a mounting ring. According to the reaction purification system for the crude acetonitrile, hot air provided by the heat supply equipment can be sprayed out through the hot air spray head, so that the rapid drying of the inner surface of the purification tank can be accelerated, the comprehensiveness of cleaning the interior of the purification tank is improved through the design, and meanwhile, the drying speed of the inner wall of the purification tank is accelerated in cooperation with hot air; the purification efficiency of the crude acetonitrile liquid is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of crude acetonitrile reaction purification technology, and in particular to a crude acetonitrile reaction purification system. Background Technology

[0002] Acetonitrile is an organic compound with the chemical formula CH3CN or C2H3N. It is a colorless and transparent liquid with excellent solvent properties, capable of dissolving a variety of organic, inorganic, and gaseous substances. It is infinitely miscible with water and alcohols. Acetonitrile can undergo typical nitrile reactions and is used to prepare many typical nitrogen-containing compounds, making it an important organic intermediate.

[0003] Patent 202322744189.2 includes a precision reaction vessel, which is connected to a feed tank and a membrane separation system. The membrane separation system is connected to a discharge tank via a distillation column. The feature is that it also includes a mixing tank and a stirring element. The stirring element is located inside the mixing tank, with the scraper perpendicular to the crossbar of the stirring rod. Simultaneously, a third servo motor drives a lead screw to rotate, causing the scraper to adhere tightly to the inner wall of the mixing tank. The motor is activated, driving the stirring rod and nozzle to rotate and scrape the inner wall of the mixing tank for cleaning. After cleaning, the scraper retracts into the stirring rod, facilitating cleaning of the mixing tank and reducing acetonitrile volatilization.

[0004] However, the above-mentioned structure does not provide a thorough cleaning of the internal components during the purification of crude acetonitrile, and the natural drying process after cleaning wastes a lot of time, which affects the purification efficiency of crude acetonitrile.

[0005] Therefore, it is necessary to provide a reaction purification system for crude acetonitrile to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a reaction purification system for crude acetonitrile, which solves the problems that scraping the inner wall of the tank by rotating the stirring rod and nozzle is not thorough enough, and that the long time required for natural drying after cleaning affects the purification efficiency.

[0007] To solve the above-mentioned technical problems, the reaction purification system for crude acetonitrile provided by this utility model includes: a base plate;

[0008] A reaction vessel is mounted on the top of a base plate near one side. A stirring assembly is mounted on the top of the reaction vessel. A filter assembly is mounted in the middle of the top of the base plate. A purification vessel is mounted on the top of the base plate near the other side via a mounting bracket. A top cover is mounted on the top of the purification vessel. A drive assembly is mounted on the top of the top cover. A purification frame is mounted on the output end of the drive assembly via a support bracket. A filter frame is mounted inside the purification vessel via a mounting ring. A fixing pipe is mounted on the bottom of the inner wall of the purification vessel via a connector. Multiple rows of liquid nozzles are mounted on the outer surface of the fixing pipe. A water tank is mounted on the top of the base plate near the back. A second conveying assembly is mounted on the top of the water tank. A conveying pipe is mounted at the outlet of the second conveying assembly. Mechanical seal rotating rings are mounted at the bottom ends of both the filter frame and the purification frame.

[0009] The heating equipment is fixedly connected to the top of the base plate near the back. The outlet of the heating equipment is equipped with a gas supply pipe, and the other end of the gas supply pipe is equipped with a diversion ring. Multiple hot air nozzles are installed at the bottom of the diversion ring.

[0010] The stirring assembly includes a drive motor and a stirring rod. A conical filter bucket is installed inside the reaction tank for preliminary filtration. The filter frame is installed on the outer surface of the purification frame. The second conveying assembly includes a housing and a conveying pump. The inlet of the second conveying assembly is connected to a water tank via a pipe. The other end of the conveying pipe is connected to a connector, which can convey the liquid into the interior of the fixed pipe. The diverting ring is installed on the top of the top cover, and the hot air nozzle is installed on the bottom of the top cover.

[0011] Preferably, an installation base is mounted on the front of the reaction vessel, and an operation screen is mounted on the front of the installation base;

[0012] The control panel allows you to set equipment operating parameters and control the operation of equipment on the base plate.

[0013] Preferably, a control box is mounted on the top of the base plate, and a door is rotatably connected to the front of the control box;

[0014] The control box contains power switches and controllers for operating the equipment.

[0015] Preferably, the drive assembly includes a protective shell with ventilation holes on both sides, and a motor with a rotating shaft is installed inside the protective shell.

[0016] The bottom end of the rotating shaft is fixedly connected to the middle of the top of the support frame.

[0017] Preferably, the filtration assembly includes a filter box, a first delivery assembly is installed on the top of the filter box, and an infusion tube is installed at the outlet of the first delivery assembly;

[0018] The other end of the infusion tube is connected to the top of the cover, and a filter screen is installed inside the filter box.

[0019] Preferably, a first valve is installed on the top of the filter box, and a return pipe is installed at the other end of the first valve;

[0020] The other end of the reflux pipe is connected to one side of the reaction vessel near the bottom.

[0021] Compared with related technologies, the reaction purification system for crude acetonitrile provided by this utility model has the following beneficial effects:

[0022] This invention provides a reaction purification system for crude acetonitrile. To facilitate cleaning and rapid drying of the purification tank, a filter frame is installed inside the tank via an mounting ring. A purification frame is also installed via a drive assembly and support frame. The filter frame and the bottom of the purification tank are connected to the outer surface of a fixed pipe via a mechanical seal rotating ring. The fixed pipe is installed at the bottom of the inner wall of the purification tank via a connector. A liquid nozzle on the outer surface of the fixed pipe allows for comprehensive cleaning of the inner surface of the purification tank, including the purification frame and filter frame. A diversion ring is installed on the top of the top cover. A hot air nozzle is then installed below the diversion ring, with its outlet at the bottom of the top cover. This allows hot air supplied by the heating equipment to be sprayed through the nozzle, accelerating the drying of the inner surface of the purification tank. This design increases the comprehensiveness of cleaning the inside of the purification tank and, combined with hot air, accelerates the drying of the inner wall, thus improving the purification efficiency of crude acetonitrile liquid. Attached Figure Description

[0023] Figure 1 A schematic diagram of a preferred embodiment of the reaction purification system for crude acetonitrile provided by this utility model;

[0024] Figure 2 A structural schematic diagram of the heating equipment is provided for this utility model;

[0025] Figure 3 A schematic diagram of the filter frame is provided for this utility model;

[0026] Figure 4 A schematic diagram of the purification frame is provided for this utility model;

[0027] Figure 5 A schematic diagram of the motor structure is provided for this utility model.

[0028] Numbered components in the diagram: 1. Base plate, 2. Door, 3. Control box, 4. Mounting base, 5. Control panel, 6. Reaction vessel, 7. Stirring assembly, 8. Gas supply pipe, 9. Drive assembly, 901. Protective shell, 902. Vent, 903. Motor, 904. Shaft, 10. Diverter ring, 11. Top cover, 12. Purification tank, 13. Mounting bracket, 14. Filter assembly, 141. Filter box, 142. Return pipe, 1 43. First valve; 144. First conveying assembly; 145. Infusion pipe; 15. Heating equipment; 16. Second valve; 17. Discharge pipe; 18. Conveying pipe; 19. Second conveying assembly; 20. Water tank; 21. Mounting ring; 22. Filter frame; 23. Purification frame; 24. Fixing pipe; 25. Connector; 26. Liquid nozzle; 27. Support frame; 28. Mechanical seal rotating ring; 29. ​​Hot air nozzle. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the reaction purification system for crude acetonitrile provided by this utility model; Figure 2 A structural schematic diagram of the heating equipment is provided for this utility model; Figure 3 A schematic diagram of the filter frame is provided for this utility model; Figure 4 A schematic diagram of the purification frame is provided for this utility model; Figure 5 This invention provides a schematic diagram of the motor structure. The crude acetonitrile reaction purification system includes: a base plate 1;

[0031] A reaction vessel 6 is mounted on the top of a base plate 1 near one side. A stirring assembly 7 is mounted on the top of the reaction vessel 6. A filter assembly 14 is mounted in the middle of the top of the base plate 1. A purification vessel 12 is mounted on the top of the base plate 1 near the other side via a mounting bracket 13. A top cover 11 is mounted on the top of the purification vessel 12. A drive assembly 9 is mounted on the top of the top cover 11. A purification frame 23 is mounted on the output end of the drive assembly 9 via a support bracket 27. A filter frame 22 is mounted inside the purification vessel 12 via a mounting ring 21. A fixing pipe 24 is mounted on the bottom of the inner wall of the purification vessel 12 via a connector 25. Multiple rows of liquid nozzles 26 are mounted on the outer surface of the fixing pipe 24. A water tank 20 is mounted on the top of the base plate 1 near the back. A second conveying assembly 19 is mounted on the top of the water tank 20. A conveying pipe 18 is mounted on the outlet of the second conveying assembly 19. Mechanical seal rotating rings 28 are mounted on the bottom ends of both the filter frame 22 and the purification frame 23.

[0032] Heating equipment 15 is fixedly connected to the top of the base plate 1 near the back. The outlet of the heating equipment 15 is equipped with a gas supply pipe 8. The other end of the gas supply pipe 8 is equipped with a diversion ring 10. Multiple hot air nozzles 29 are installed at the bottom of the diversion ring 10.

[0033] The stirring assembly 7 includes a drive motor and a stirring rod. The reaction tank 6 is equipped with a conical filter bucket for preliminary filtration. The filter frame 22 is installed on the outer surface of the purification frame 23. The second conveying assembly 19 includes a housing and a conveying pump. The inlet of the second conveying assembly 19 is connected to the water tank 20 through a pipe. The other end of the conveying pipe 18 is connected to the connector 25, which can convey the liquid into the interior of the fixed pipe 24. The diverting ring 10 is installed on the top of the top cover 11. The hot air nozzle 29 is installed on the bottom of the top cover 11. The mechanical seal rotating ring 28 is connected to the outer surface of the fixed pipe 24 to prevent leakage at the connection without affecting the rotation of the purification frame 23.

[0034] The front of the reaction vessel 6 is equipped with an installation base 4, and the front of the installation base 4 is equipped with an operation screen 5.

[0035] The operation panel 5 can set the equipment operating parameters and control the operation of the equipment on the base plate 1.

[0036] A control box 3 is installed on the top of the base plate 1, and a door 2 is rotatably connected to the front of the control box 3;

[0037] The door 2 is equipped with a lock, and the control box 3 contains a power switch and a controller for controlling the operation of the equipment.

[0038] The drive assembly 9 includes a protective shell 901, with ventilation holes 902 on both sides of the protective shell 901, and a motor 903 with a rotating shaft 904 installed inside the protective shell 901.

[0039] Vent hole 902 is used to help the motor 903 dissipate heat. The bottom end of the rotating shaft 904 is fixedly connected to the top middle position of the support frame 27.

[0040] The filter assembly 14 includes a filter box 141, a first delivery assembly 144 is installed on the top of the filter box 141, and an infusion tube 145 is installed at the outlet of the first delivery assembly 144.

[0041] The other end of the infusion tube 145 is connected to the top of the top cover 11. A filter screen is installed inside the filter box 141. A pipe is installed at the inlet of the first delivery assembly 144 and inserted into the filter box 141.

[0042] A first valve 143 is installed on the top of the filter box 141, and a return pipe 142 is installed on the other end of the first valve 143.

[0043] The other end of the reflux pipe 142 is connected to one side of the reaction vessel 6 near the bottom, and the first valve 143 is manually opened and closed.

[0044] The working principle of the crude acetonitrile reaction purification system provided by this utility model is as follows:

[0045] Inside the purification tank 12, a filter frame 22 is installed via an mounting ring 21. A purification frame 23 is also installed via a drive assembly 9 and a support frame 27. The filter frame 22 and the bottom of the purification tank 12 are connected to the outer surface of a fixed pipe 24 via a mechanical seal rotating ring 28. The fixed pipe 24 is installed at the bottom of the inner wall of the purification tank 12 via a connector 25. A liquid nozzle 26 on the outer surface of the fixed pipe 24 can be used to thoroughly clean the inner surface of the purification tank 12, as well as the purification frame 23 and filter frame 22. A diversion ring 10 is installed on the top of the top cover 11. A hot air nozzle 29 is then installed below the diversion ring 10, with its outlet located at the bottom of the top cover 11. This allows the hot air provided by the heating equipment 15 to be sprayed through the hot air nozzle 29, accelerating the drying of the inner surface of the purification tank 12. In operation, the crude acetonitrile reaction raw materials are first mixed and reacted inside the reaction tank 6. After the reaction is completed, they are filtered through the filter assembly 14 and then transported to the purification tank 12. During this process, the drive assembly 9 drives the purification frame 23 to rotate and stir for separation and purification. The separated crude acetonitrile liquid is then purified again through the filter frame 22. After purification, it is discharged through the discharge pipe 17. Then, the second valve 16 is closed and the second conveying assembly 19 is started to transport the cleaning liquid through the conveying pipe 18 to the inside of the fixed pipe 24. The liquid is then sprayed out through the liquid nozzle 26 to clean the inner surface of the purification tank 12. After cleaning, the second valve 16 is opened to discharge the cleaning liquid into the corresponding treatment tank for disinfection. Then, the heating equipment 15 is started to spray hot air through the hot air nozzle 29. The hot air increases the flow rate and improves the drying speed of the purification tank 12.

[0046] Compared with related technologies, the reaction purification system for crude acetonitrile provided by this utility model has the following beneficial effects:

[0047] To facilitate internal cleaning and rapid drying of the purification tank 12, a filter frame 22 is installed inside the purification tank 12 via an mounting ring 21. Simultaneously, a purification frame 23 is installed via a drive assembly 9 and a support frame 27. The filter frame 22 and the bottom of the purification tank 12 are connected to the outer surface of a fixed tube 24 via a mechanical seal rotating ring 28. The fixed tube 24 is installed at the bottom of the inner wall of the purification tank 12 via a connector 25. A liquid nozzle 26 on the outer surface of the fixed tube 24 allows for comprehensive cleaning of the inner surface of the purification tank 12. The purification frame 23 and filter frame 22 can be cleaned. A diversion ring 10 is installed on the top of the top cover 11. Then, the hot air nozzle 29 is installed below the diversion ring 10, with the nozzle 29's outlet located at the bottom of the top cover 11. This allows the hot air provided by the heating equipment 15 to be sprayed out through the hot air nozzle 29, which can accelerate the drying of the inner surface of the purification tank 12. This design increases the comprehensiveness of the cleaning of the inside of the purification tank 12. At the same time, the hot air accelerates the drying speed of the inner wall of the purification tank 12, which is beneficial to improving the purification efficiency of crude acetonitrile liquid.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reaction purification system for crude acetonitrile, characterized in that, include: Base plate; A reaction vessel is mounted on the top of a base plate near one side. A stirring assembly is mounted on the top of the reaction vessel. A filter assembly is mounted in the middle of the top of the base plate. A purification vessel is mounted on the top of the base plate near the other side via a mounting bracket. A top cover is mounted on the top of the purification vessel. A drive assembly is mounted on the top of the top cover. A purification frame is mounted on the output end of the drive assembly via a support bracket. A filter frame is mounted inside the purification vessel via a mounting ring. A fixing pipe is mounted on the bottom of the inner wall of the purification vessel via a connector. Multiple rows of liquid nozzles are mounted on the outer surface of the fixing pipe. A water tank is mounted on the top of the base plate near the back. A second conveying assembly is mounted on the top of the water tank. A conveying pipe is mounted at the outlet of the second conveying assembly. Mechanical seal rotating rings are mounted at the bottom ends of both the filter frame and the purification frame. The heating equipment is fixedly connected to the top of the base plate near the back. The outlet of the heating equipment is equipped with a gas supply pipe, and the other end of the gas supply pipe is equipped with a diversion ring. Multiple hot air nozzles are installed at the bottom of the diversion ring.

2. The reaction purification system for crude acetonitrile according to claim 1, characterized in that, The reaction vessel is mounted on a mounting base on its front side, and an operation panel is mounted on the front side of the mounting base.

3. The reaction purification system for crude acetonitrile according to claim 1, characterized in that, A control box is mounted on the top of the base plate, and a door is rotatably connected to the front of the control box.

4. The reaction purification system for crude acetonitrile according to claim 1, characterized in that, The drive assembly includes a protective shell with ventilation holes on both sides, and a motor with a rotating shaft is installed inside the protective shell.

5. The reaction purification system for crude acetonitrile according to claim 1, characterized in that, The filtration assembly includes a filter box, a first delivery assembly is mounted on the top of the filter box, and an infusion tube is installed at the outlet of the first delivery assembly.

6. The reaction purification system for crude acetonitrile according to claim 5, characterized in that, A first valve is installed on the top of the filter box, and a return pipe is installed at the other end of the first valve.

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