Ammonification reaction kettle
By designing an ammonization reactor containing a drip control device, a constant frequency of ammonia water infusion is achieved, which solves the problems of many by-products and high reaction risks in the existing ammonization reaction process, reduces the reaction temperature and pressure, and improves the reaction safety.
Patent Information
- Application Number
- CN202420400935.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-01
AI Technical Summary
The existing ammonization reaction process is carried out in a general-purpose reactor, which has the problem of many by-products and high reaction risks, and the reaction temperature and pressure are relatively high.
An ammonia reactor is designed, including a kettle body, a drip control device and an ammonia water storage tank. A stirring device is installed in the kettle body. The drip control device realizes ammonia water drop infusion at a fixed frequency through a slider and a slider driving mechanism.
Through a fixed frequency of ammonia infusion, uniform ammonia infusion is achieved, the reaction temperature and pressure are reduced, the generation of by-products is reduced, and the safety of the reaction is improved.
Smart Images
Figure CN222624524U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reaction kettles, in particular to an amination reaction kettle. Background Art
[0002] 2,4-Dinitroaniline is a product produced by an amination reaction using 2,4-dinitrochlorobenzene and ammonia water as raw materials. Since the amination reaction of this product is carried out in a general-purpose reactor, the amination process of this product is currently carried out using a one-pot method. The product produced by the one-pot method has the disadvantage of having more by-products (about 1%), and during the reaction, the temperature in the reactor needs to be 145-165°C and the pressure needs to be 0.45-0.65MPa, resulting in a high overall risk in the reaction process. At present, enterprises are in urgent need of designing reactor equipment that matches the new amination process to meet production needs. Utility Model Content
[0003] The purpose of the utility model is to solve the needs of the above-mentioned prior art and provide an amination reaction kettle.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An ammonia reaction kettle comprises a kettle body, a dripping control device and an ammonia water storage tank, wherein a stirring device is installed in the kettle body, a dripping equipment platform is connected and installed on the top of the kettle body, a dripper is installed on the dripping equipment platform, the dripping control device and the ammonia water storage tank are also installed on the dripping equipment platform, a switch striker that can be telescopically moved is installed on the dripping control device, the switch striker is arranged corresponding to the opening switch of the dripper, the ammonia water storage tank is connected to the dripper pipeline, the dripper outlet end is connected to a liquid inlet tube, and the liquid inlet tube extends and is introduced into the kettle body.
[0006] The infusion control device includes a control box, a slider and a slider driving mechanism. Two parallel guide rails are installed in the control box. The slider is slidably installed on the two guide rails. The slider driving mechanism is installed on the control box. The slider driving mechanism is transmission-connected to the slider. The switch striker is fixedly connected to the side of the slider. The switch striker can move and extend to the outside of the control box.
[0007] The slider driving mechanism includes a driving gear, a passive gear, a motor and a gearbox. The driving gear and the passive gear are both rotatably installed in the control box. The driving gear and the passive gear are meshed with each other. The driving gear is fixedly connected with a first sector gear, and the passive gear is fixedly connected with a second sector gear. The motor and the gearbox are installed outside the control box. The output end of the motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the driving gear. A transmission rack is fixedly connected to the slider, and the transmission rack is arranged toward the first sector gear and the second sector gear. The first sector gear and the second sector gear can alternately mesh with the transmission rack during rotation.
[0008] The installation height of the transmission rack only corresponds to the installation height of the first sector gear and the second sector gear.
[0009] An inner cylinder is rotatably installed in the kettle body, and the reaction materials undergo an amination reaction in the inner cylinder. An inner cylinder driving device is installed at the bottom of the kettle body, and the output end of the inner cylinder driving device is connected to the inner cylinder.
[0010] A coil is installed on the outer wall of the kettle body, and the coverage area of the coil is arranged corresponding to the inner cylinder.
[0011] The beneficial effects of the utility model are as follows: the utility model is designed with a drip control device, which can control the extension and retraction of the switch striker at a fixed frequency to form an effect of a fixed frequency dripping of ammonia water by the dripper. The utility model has the advantage of uniform dripping of ammonia water. By applying the utility model, the production requirements of the new amination reaction process can be well met. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the main structure of the utility model;
[0013] Figure 2 It is a front view of the driving structure of the slider and the switch striker of the utility model;
[0014] Figure 3 It is a side view of the driving structure of the slider and the switch striker of the utility model.
[0015] In the figure: kettle body 1, dripping equipment platform 11, inner cylinder 12, coil 13, stirring device 2, dripper 3, liquid introduction tube 31, dripping control device 4, switch striker 41, control box 42, guide rail 421, slider 43, transmission rack 431, slider driving mechanism 44, active gear 441, passive gear 442, first sector gear 443, second sector gear 444, motor 445, gearbox 446, ammonia water storage tank 5, inner cylinder driving device 6. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. The descriptions of "left" and "right" in the present invention are all based on Figure 1 For reference direction:
[0017] like Figure 1 to Figure 3 As shown, an ammonia reaction kettle comprises a kettle body 1, a dripping control device 4 and an ammonia water storage tank 5. A stirring device 2 is installed in the kettle body 1. The stirring device 2 is used to stir the reaction materials to make the materials more evenly mixed and the reaction more complete. The stirring device 2 is a common mechanism of the reactor and will not be introduced here. A dripping device platform 11 is connected to the top of the kettle body 1, and a dripper 3 is installed on the dripping device platform 11. The dripping control device 4 and the ammonia water storage tank 5 are also installed on the dripping device platform 11. A switch striker 41 capable of telescopic movement is installed on the dripping control device 4. The switch striker 41 is set to correspond to the opening switch of the dripper 3. The ammonia water storage tank 5 is connected to the dripper 3 through a pipeline. The outlet end of the dripper 3 is connected to a liquid inlet tube 31. The liquid inlet tube 31 extends into the kettle body 1. The ammonia water for reaction is stored in the ammonia water storage tank 5, which can be used for dripping. The device 3 continuously provides ammonia water supplement, and the dripper 3 is in a normally closed state. When the switch striker 41 strikes the opening switch of the dripper 3, a dripping liquid effect can be formed, and the output ammonia water liquid is added to the reaction material through the liquid introduction tube 31. Since the dripping control device 4 can control the switch striker 41 to extend and retract at a fixed frequency, it can eventually form an effect of adding ammonia water at a fixed frequency. Under the above structural design, the utility model can meet the production needs of the new process of amination reaction. At present, the enterprise changes the one-pot stewing method into the ammonia water dripping method. Ammonia water only needs to be dripped in the temperature range of 85℃-95℃, and then the reaction system materials are heated to 115℃-120℃ by relying on its own reaction heat to finally form the product. After adopting the new process, the reaction temperature and reaction pressure are greatly reduced, and the reaction by-products are also greatly reduced. The new process can greatly improve the safety of the reaction process.
[0018] like Figure 2 and Figure 3 As shown, the drip control device 4 includes a control box 42, a slider 43 and a slider driving mechanism 44. Two parallel guide rails 421 are paved in the control box 42. The slider 43 is slidably installed on the two guide rails 421. The guide rails 421 play a role in guiding the movement of the slider 43, so that it can only move along the length direction of the guide rails 421. The slider driving mechanism 44 is installed on the control box 42. The slider driving mechanism 44 is transmission-connected to the slider 43. The slider driving mechanism 44 can drive the slider 43 to reciprocate on the guide rails 421. The switch striker 41 is fixedly connected to the side of the slider 43. The switch striker 41 can move with the slider 43. When the slider 43 moves toward the drip dispenser 3, the switch striker 41 can move and extend to the outside of the control box 42 to trigger the start switch of the drip dispenser 3.
[0019] like Figure 2 and Figure 3 As shown, the slider driving mechanism 44 includes a driving gear 441, a passive gear 442, a motor 445 and a gearbox 446. The driving gear 441 and the passive gear 442 are both rotatably installed in the control box 42. The driving gear 441 and the passive gear 442 are meshed with each other to form a synchronous rotation effect. The driving gear 441 is fixedly connected with a first sector gear 443, and the first sector gear 443 can rotate with the driving gear 441. The passive gear 442 is fixedly connected with a second sector gear 444, and the second sector gear 444 can rotate with the passive gear 442. The motor 445 and the gearbox 446 are installed on the outside of the control box 42. The output end of the motor 445 is connected to the input end of the gearbox 446, and the output end of the gearbox 446 is connected to the driving gear 441. The motor 445 acts as a power source, and the gearbox 446 can form different gear speeds. When the gear speeds are different, the movement frequencies of the slider 43 and the switch striker 41 will The motor 445 transmits power to the driving gear 441, which can synchronously drive the driven gear 442 to rotate, and finally forms the rotation of the first sector gear 443 and the second sector gear 444. The slider 43 is fixedly connected with a transmission rack 431, and the transmission rack 431 is arranged in the direction of the first sector gear 443 and the second sector gear 444. The first sector gear 443 and the second sector gear 444 can alternately mesh with the transmission rack 431 during the rotation. Due to the alternating meshing structure, as the first sector gear 443 and the second sector gear 444 rotate, one can form an effect of pushing out the switch striker 41, and the other can form an effect of pulling back the switch striker 41. Under the continuous rotation of the first sector gear 443 and the second sector gear 444, the switch striker 41 will reciprocate at a fixed frequency, and can trigger the opening switch of the dripper 3 at a fixed frequency to form an ammonia filling effect at a fixed frequency.
[0020] like Figure 3 As shown, the installation height of the transmission rack 431 only corresponds to the installation height of the first sector gear 443 and the second sector gear 444, so that the transmission rack 431 can only engage with the rotating first sector gear 443 and the second sector gear 444, and will not interfere with the rotation of the driving gear 441 and the driven gear 442.
[0021] like Figure 1As shown, an inner cylinder 12 is rotatably installed in the kettle body 1, and the reaction materials undergo an amination reaction in the inner cylinder 12. An inner cylinder driving device 6 is installed at the bottom of the kettle body 1, and the output end of the inner cylinder driving device 6 is connected to the inner cylinder 12. The inner cylinder driving device 6 is a power device that can drive the inner cylinder 12 to rotate at a low speed. Since the position of the liquid introduction tube 31 is fixed, when the inner cylinder 12 rotates, ammonia water can be dripped at different positions of the same circumferential line. The above structure can help increase the uniformity of dripping of ammonia water and ensure the smooth progress of the amination reaction.
[0022] like Figure 1 As shown, a coil 13 is wound and installed on the outer wall of the kettle body 1, and the coverage area of the coil 13 is arranged corresponding to the inner tube 12. Before the amination reaction, the kettle body 1 needs to be heated to reach the reaction temperature. After the amination reaction is completed, the kettle body 1 needs to be cooled to precipitate and form product crystals. Heat transfer oil or coolant can be introduced into the coil 13 to meet the needs of heating or cooling. In the utility model, the gap between the inner tube 12 and the inner wall of the kettle body 1 should be small enough so as not to affect the temperature transfer.
[0023] 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 protection scope of the present invention.
Claims
1. An ammonia reaction kettle, comprising a kettle body (1), a dripping control device (4) and an ammonia water storage tank (5), characterized in that: The kettle (1) is provided with a stirring device (2), the top of the kettle (1) is connected to a dripping device platform (11), a dripper (3) is provided on the dripping device platform (11), the dripping control device (4) and an ammonia water storage tank (5) are also provided on the dripping device platform (11), a switch striker (41) capable of telescopic movement is provided on the dripping control device (4), the switch striker (41) is arranged corresponding to the opening switch of the dripper (3), the ammonia water storage tank (5) is connected to the dripper (3) pipeline, the outlet end of the dripper (3) is connected to a liquid inlet tube (31), and the liquid inlet tube (31) extends and is introduced into the kettle (1).
2. An ammonia reaction kettle as claimed in claim 1, characterized in that: The infusion control device (4) comprises a control box (42), a slider (43) and a slider driving mechanism (44); two parallel guide rails (421) are installed in the control box (42); the slider (43) is slidably mounted on the two guide rails (421); the slider driving mechanism (44) is mounted on the control box (42); the slider driving mechanism (44) is transmission-connected to the slider (43); the switch striker (41) is fixedly connected to the side of the slider (43); and the switch striker (41) can move and extend to the outside of the control box (42).
3. An ammonia reaction kettle as claimed in claim 2, characterized in that: The slider driving mechanism (44) comprises a driving gear (441), a driven gear (442), a motor (445) and a gearbox (446). The driving gear (441) and the driven gear (442) are both rotatably mounted in the control box (42). The driving gear (441) and the driven gear (442) are meshed with each other. The driving gear (441) is fixedly connected to a first sector gear (443). The driven gear (442) is fixedly connected to a second sector gear (444). The motor (445) and the gearbox (446) are connected to the driving gear (441). The box (446) is installed outside the control box (42), the output end of the motor (445) is connected to the input end of the gearbox (446), the output end of the gearbox (446) is connected to the driving gear (441), and the slider (43) is fixedly connected with a transmission rack (431), and the transmission rack (431) is arranged toward the first sector gear (443) and the second sector gear (444), and the first sector gear (443) and the second sector gear (444) can alternately mesh with the transmission rack (431) during the rotation process.
4. An amination reaction kettle as claimed in claim 3, characterized in that: The installation height of the transmission rack (431) only corresponds to the installation height of the first sector gear (443) and the second sector gear (444).
5. The ammonia reaction kettle according to claim 1, characterized in that: An inner cylinder (12) is rotatably mounted in the kettle body (1), and the reaction material undergoes an amination reaction in the inner cylinder (12). An inner cylinder driving device (6) is mounted at the bottom of the kettle body (1), and the output end of the inner cylinder driving device (6) is connected to the inner cylinder (12).
6. An ammonia reaction kettle as claimed in claim 5, characterized in that: A coil (13) is installed on the outer wall of the kettle body (1), and the coverage area of the coil (13) is arranged corresponding to the inner tube (12).