Purification device for 4, 4 '-dinitrodiphenyl ether
By setting coils and transverse tubes at the bottom of the condensation kettle, combined with the design of scraper and stirring paddle, the problems of uneven steam distribution and difficulty in cleaning the inner wall are solved, the purity of dinitrodiphenyl ether is improved and the production cost is reduced.
Patent Information
- Application Number
- CN202422388107.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-29
AI Technical Summary
The existing condensation kettles have uneven steam distribution during the gas belt, resulting in incomplete gas belt, affecting the purity of dinitrodiphenyl ether, and it is difficult to clean up the wall hanging substances in the kettle, which increases the labor intensity and cost.
A purification device is designed. By setting coils and transverse tubes at the bottom of the condensation kettle, steam evenly enters the kettle from multiple outlet nozzles, and installing scrapers on the rotating shaft to automatically clean the inner wall. Combined with the stirring paddle to improve the material mixing efficiency and control the steam flow and temperature.
The uniform distribution of steam is achieved, the purity of dinitrodiphenyl ether is improved, the gas belt time is reduced, the demand for manual cleaning of the inner walls is reduced, and the production cost is reduced.
Smart Images
Figure CN223112368U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fine chemical production, and specifically relates to a purification device for 4,4'-dinitrodiphenyl ether. Background Art
[0002] 4,4′-Dinitrodiphenyl ether is a fine chemical with high added value, and is widely used in aspects such as insulation, passivation, stress buffering and ray blocking of semiconductor devices. However, in the existing condensation kettle, steam is directly introduced through the transfer pipeline during the gas stripping process. Since the transfer pipeline is at the bottom of the kettle, the steam is unevenly distributed and has a small amount in the kettle after entering, resulting in a long gas stripping time (the gas stripping time is 15-16 h), and the gas stripping may affect the purity of dinitro due to incompleteness, resulting in a low product qualification rate. Moreover, since there is a lot of material adhering to the wall of the condensation kettle after the transfer is completed and it cannot be cleaned, manual cleaning is required after stopping the machine, which is dangerous and costly. In addition, during the gas stripping of the old process, since the steam enters from one port concentratedly, the kettle vibrates greatly during the gas stripping, generating a large amount of noise pollution and damaging the health of employees. Therefore, it is necessary to design a device that can improve the incomplete gas stripping caused by the uneven single-port entry of steam into the kettle, ensure that the impurities in the produced dinitro can be completely carried away by the gas stripping, thereby improving the purity of dinitro, and at the same time automatically cleaning the wall-adhering substances. Summary of the Utility Model
[0003] Aiming at the above technical problems, the utility model provides a device that can improve the incomplete gas stripping caused by the uneven single-port entry of steam into the kettle, ensure that the impurities in the produced dinitro can be completely carried away by the gas stripping, thereby improving the purity of dinitro, and at the same time automatically cleaning the wall-adhering substances, so as to solve the problems of incomplete gas stripping that may affect the purity of dinitro due to the single-port entry of steam into the kettle and the wall adhesion in the kettle.
[0004] To solve the above technical problems, the technical solution of the utility model is: a purification device for 4,4'-dinitrodiphenyl ether, including a condensation kettle, a jacket, and a bracket. The jacket is sleeved outside the condensation kettle, and the bracket is fixedly connected to the outer bottom of the jacket. An air inlet pipe penetrates through the jacket and is fixedly connected to the outer bottom of the condensation kettle. One end of the air inlet pipe is fixedly connected to a gas dispersion plate. A through hole is opened in the middle of the gas dispersion plate. The gas dispersion plate includes a coil pipe and a cross pipe, and the coil pipe is communicated with the cross pipe. A cross bracket is fixedly connected to the bottom of the condensation kettle, and a bearing seat is fixedly connected to the cross bracket. A motor is fixedly connected to the top of the condensation kettle, and an output end of the motor is fixedly connected to a rotating shaft. The other end of the rotating shaft is fixedly connected to the bearing seat. A scraper is fixedly connected to the rotating shaft through a bracket, and the other end of the scraper abuts against the inner wall of the condensation kettle. An inlet port and an air outlet are opened at the top of the condensation kettle, and a water inlet pipe is fixedly connected to one side of the jacket, and a water outlet is opened at the bottom of the jacket.
[0005] Further, evenly distributed air outlet nozzles are provided on both the coil pipes and the horizontal pipes.
[0006] Further, a valve is provided on the inlet pipe.
[0007] Further, a discharge port is opened at the bottom of the condensation kettle, and stop valves are provided on the discharge port, the inlet water pipe, and the outlet water pipe.
[0008] Further, a number of stirring paddles are fixedly connected to the rotating shaft.
[0009] The utility model has the following advantages compared with the prior art:
[0010] 1. In the utility model, a coil pipe is fixedly connected to the inner bottom of the condensation kettle, a horizontal pipe is fixedly connected horizontally to the coil pipe, and evenly distributed air outlet nozzles are opened on the coil pipe and the horizontal pipe, so that the steam entering the kettle can be evenly distributed, the problem of incomplete gas band caused by uneven single-port steam inlet into the kettle can be improved, it is ensured that the impurities in the produced dinitro can be completely carried away by the gas band, thereby improving the purity of dinitro. Moreover, the intake air volume of the distributed coil pipes is larger than before, the gas band time can be reduced. At the same time, since the steam is dispersed and enters the kettle through multiple air outlet nozzles, the vibration caused by single-port intake is also alleviated. By fixedly connecting a scraper to the rotating shaft in the condensation kettle, the substances attached to the inner wall of the condensation kettle can be scraped while the condensation kettle is being stirred, reducing the procedure of traditional manual inner wall cleaning and saving production costs.
[0011] 2. In the utility model, by providing a valve on the inlet pipe, the speed of the gas entering the kettle can be controlled, thereby controlling the length of the gas band time and further accurately controlling the purity of dinitro. By opening a discharge port at the bottom of the condensation kettle, it is convenient to collect the purified dinitro. By fixedly connecting an inlet water pipe to one side of the jacket and opening an outlet water pipe at the bottom, the internal temperature of the condensation kettle can be controlled by introducing water into the jacket. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic structural diagram of the utility model.
[0013] Figure 2 is Figure 1 the schematic structural diagram of the coil pipe in
[0014] Figure 3 is a schematic top view structural diagram of the utility model.
[0015] In the figure: 1. Condensation kettle, 2. Jacket, 3. Coil pipe, 4. Horizontal pipe, 5. Air outlet nozzle, 6. Inlet pipe, 7. Valve, 8. Inlet water pipe, 9. Outlet water pipe, 10. Discharge port, 11. Scraper, 12. Stirring paddle, 13. Rotating shaft, 14. Motor, 15. Air outlet, 16. Feeding port, 17. Bracket, 18. Through hole, 19. Cross bracket, 20. Bearing seat. Detailed implementation mode
[0016] The present utility model will be further described below in conjunction with the accompanying drawings.
[0017] As Figures 1 to 3 shown, a purification device for 4,4'-dinitrodiphenyl ether includes a condensation kettle 1, a jacket 2, and a bracket 17. In order to control the temperature inside the condensation kettle 1, the jacket 2 is sleeved outside the condensation kettle 1. In order to facilitate the collection of internal substances, the bracket 17 is fixedly connected to the outer bottom of the jacket 2. In order to reduce the gas-carrying time during condensation and make the steam enter the condensation kettle 1 evenly, thereby improving the purity of dinitro, an inlet pipe 6 is fixedly connected through the jacket 2 at the outer bottom of the condensation kettle 1, and steam is introduced into the inlet pipe 6. In order to make the steam enter the kettle more evenly, a diffuser plate is fixedly connected to one end of the inlet pipe 6. In order to facilitate the support of the rotating shaft 13 and allow the rotating shaft 13 to pass through, a through hole 18 is opened in the middle of the diffuser plate. In order to make the steam fully cover the entire bottom of the condensation kettle 1, six horizontal pipes 4 of different lengths are horizontally and fixedly connected to the coil pipe 3, and both ends of the horizontal pipe 4 are communicated with the coil pipe 3. In order to support the other end of the rotating shaft 13 and make the rotating shaft 13 more stable during rotation, a cross-shaped bracket 19 is fixedly connected to the bottom of the condensation kettle 1. In order to cooperate with the rotating shaft 13, a bearing seat 20 is fixedly connected above the cross-shaped bracket 19. In order to provide power for the stirring device inside the condensation kettle 1, a motor 14 is fixedly connected to the top of the condensation kettle 1, the output end of the motor 14 is fixedly connected to a rotating shaft 13, and the other end of the rotating shaft 13 is rotatably connected to the bearing seat 20. In order to clean the substances attached to the inner wall of the condensation kettle 1, two pairs of symmetrically arranged brackets are fixedly connected to the rotating shaft 13, and a scraping plate 11 is fixedly connected to the other end of the bracket. The cross-section of the scraping plate 11 is triangular, and the other end of the scraping plate 11 abuts against the inner wall of the condensation kettle 1. By rotating the motor 14, the scraping plate 11 is driven to rotate along the inner wall of the condensation kettle 1, thereby scraping off the substances attached to the inner wall. In order to facilitate maintenance and feeding, a feeding port 16 is opened at the top of the condensation kettle 1, and the feeding port is large enough for people to enter and exit. An air outlet 15 is opened on the other side of the top of the condensation kettle 1. In order to facilitate the circulation of water in the jacket 1 to achieve the effect of temperature control, a water inlet pipe 8 is fixedly connected to one side of the jacket 2, and a water outlet 9 is opened at the bottom.
[0018] In order to make the steam entering the condensation kettle 1 more uniform, thereby improving the purity of dinitro, air outlet nozzles 5 are uniformly arranged on both the coil pipe 3 and the horizontal pipe 4.
[0019] In order to control the size and time of the incoming steam, a valve 7 is provided on the inlet pipe 6.
[0020] To facilitate the collection of the purified substance, a discharge port 10 is provided at the bottom of the condensation kettle 1, and stop valves are provided on the discharge port 10, the water inlet pipe 8, and the water outlet 9.
[0021] To improve the purification efficiency of the substance and the product purity, three pairs of symmetrically distributed stirring paddles 12 are fixedly connected to the rotating shaft 13 from top to bottom in sequence.
[0022] The specific working process of the present utility model is as follows:
[0023] First, the raw materials are added into the interior of the condensation kettle 1 from the feeding port 16, and at the same time, the motor 14 is controlled to start rotating for stirring. At this time, the rotating shaft 13 drives the scraper 11 to rotate along the inner wall of the condensation kettle 1. At this time, the valve 7 is opened to introduce steam. The steam first enters the coil pipe 3 and then enters the horizontal pipe 4, and finally is evenly ejected from the upper air outlet nozzle 5. If the temperature of the condensation kettle needs to be controlled, constant temperature water is introduced into the water inlet pipe 8. After the jacket is filled with water, the valve at the water outlet 9 is opened for circulating heat exchange temperature control. After the raw materials are purified, the stirring of the motor 14 is stopped, and the valve 7 is closed so that no more steam enters the condensation kettle 1. The generated substance flows into the bottom of the condensation kettle 1 through the gap between the horizontal pipes 4 and is collected from the bottom discharge port. By purifying and purifying dinitro according to the above steps, the purity of dinitro can be improved, and the manual labor intensity can be reduced, and the cost can be lowered.
Claims
1. A purification device for 4,4'-dinitrodiphenyl ether, comprising a condensation kettle (1), a jacket (2), and a bracket (17). The jacket (2) is sleeved outside the condensation kettle (1), and the bracket (17) is fixedly connected to the outer bottom of the jacket (2), and is characterized in that: At the outer bottom of the condensation kettle (1), an air inlet pipe (6) is fixedly connected through the jacket (2). One end of the air inlet pipe (6) is fixedly connected with a gas dispersion plate. A through hole (18) is formed in the middle of the gas dispersion plate. The gas dispersion plate comprises a coil pipe (3) and a horizontal pipe (4). The coil pipe (3) is communicated with the horizontal pipe (4). A cross support (19) is fixedly connected to the bottom of the condensation kettle (1). A bearing seat (20) is fixedly connected to the cross support (19). A motor (14) is fixedly connected to the top of the condensation kettle (1). The output end of the motor (14) is fixedly connected with a rotating shaft (13). The other end of the rotating shaft (13) is rotatably connected to the bearing seat (20). A scraper (11) is fixedly connected to the rotating shaft (13) through a support. The other end of the scraper (11) abuts against the inner wall of the condensation kettle (1). A feeding port (16) and an air outlet (15) are formed in the top of the condensation kettle (1). A water inlet pipe (8) is fixedly connected to one side of the jacket (2), and a water outlet (9) is formed in the bottom of the jacket (2).
2. The purification device for 4,4'-dinitrodiphenyl ether according to claim 1, wherein: Air outlet nozzles (5) are arranged on both the coil pipe (3) and the horizontal pipe (4).
3. The purification device for 4,4'-dinitrodiphenyl ether according to claim 1, characterized in that: A valve (7) is arranged on the air inlet pipe (6).
4. The purification device for 4,4'-dinitrodiphenyl ether according to claim 1, characterized in that: A discharge port (10) is formed in the bottom of the condensation kettle (1). Stop valves are arranged on the discharge port (10), the water inlet pipe (8), and the water outlet (9).
5. The purification device for 4,4'-dinitrodiphenyl ether according to claim 1, characterized in that: A number of stirring paddles (12) are fixedly connected to the rotating shaft (13).