Catalytic reaction kettle for producing N-ethylaniline
By using magnetically coupled power transmission and stirring mechanism design, the problems of stirring shaft vibration and sealing in catalytic reactors under high temperature and high pressure are solved, achieving long service life and efficient maintenance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAXING FU CHENG CHEM SCI & TECH CO LTD
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-21
AI Technical Summary
Existing catalytic reactors are prone to vibration of the stirring shaft and reducer under high temperature and pressure, which leads to wear of the mechanical seal, increases the risk of material leakage, and makes maintenance cumbersome and results in a high equipment failure rate.
It adopts a magnetically coupled power transmission mechanism and stirring mechanism. The magnetic transmission component is connected to the driven disk through magnetic coupling. Combined with the design of stirring rope and stirring shaft ball, the transmission resistance is reduced and the sealing performance is improved. At the same time, the detachable connecting sleeve design facilitates maintenance.
This reduces the burden on the drive motor, decreases the risk of material leakage, extends equipment life, and improves the convenience of maintenance while reducing maintenance costs.
Smart Images
Figure CN224142191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of catalytic reactor technology, and in particular to a catalytic reactor for the production of N-ethylaniline. Background Technology
[0002] During the production of N-ethylaniline, a catalytic reactor is required to mix and stir the N-ethylaniline raw material and the catalyst for catalysis.
[0003] Existing catalytic reactors typically use motor-driven stirring blades or augers to agitate the N-ethylaniline catalyst. During operation, the stirring blades encounter resistance from the N-ethylaniline, requiring high-power motor operation. Furthermore, under high-temperature and high-pressure conditions, the stirring shaft and reducer are prone to vibration due to insufficient structural rigidity or misalignment, accelerating mechanical seal wear and increasing the risk of material leakage. In some reactors, the reducer frame is too short, requiring the entire transmission system to be disassembled when replacing seals or bearings, which is cumbersome and time-consuming.
[0004] To address this issue, this application proposes a catalytic reactor for the production of N-ethylaniline, which reduces the problem of catalytic reactors being easily damaged due to resistance and pressure. Utility Model Content
[0005] In view of the shortcomings of the prior art mentioned above, the purpose of this utility model is to provide a catalytic reactor for the production of N-ethylaniline, which solves the problem of high failure rate of stirring equipment mentioned in the prior art.
[0006] To achieve the above and other related objectives, this utility model provides a catalytic reactor for the production of N-ethylaniline, including a material storage mechanism, a power transmission mechanism, and a stirring mechanism;
[0007] The power transmission mechanism is located at the bottom of the storage mechanism, the stirring mechanism is located inside the storage mechanism, and the power transmission mechanism and the stirring mechanism are magnetically coupled.
[0008] The power transmission mechanism includes a drive motor, the top of which is provided with a connecting flange that connects to the bottom of the storage mechanism, and the output shaft of the drive motor is provided with a magnetic drive component that is close to the bottom of the storage mechanism.
[0009] The stirring mechanism includes a drive shaft, a driven disk is provided at the bottom of the drive shaft, the driven disk is magnetically coupled to the magnetic transmission component, and a stirring rope is provided on the outer surface of the drive shaft, with a stirring shaft bead sleeved on the stirring rope.
[0010] Preferably, the magnetic transmission component includes a disc mounted on the output shaft of a transmission motor, and a plurality of equally spaced magnets are arranged on the side of the disc facing the storage mechanism.
[0011] Preferably, the storage mechanism includes a reaction vessel, and a connecting limit cover is provided at the bottom axis of the reaction vessel, and the driven disk is disposed inside the connecting limit cover.
[0012] Preferably, the bottom of the reaction vessel is provided with a connecting pipe, and the top of the reaction vessel is provided with a sealing cap.
[0013] Preferably, the outer surface of the drive shaft is further provided with multiple traction ropes, one end of which is connected to the outer surface of the drive shaft and the other end is connected to the outer surface of the stirring rope.
[0014] Preferably, the stirring bead is disposed between two adjacent traction ropes, the stirring bead is capsule-shaped, and the stirring bead can slide on the outer surface of the stirring rope.
[0015] Preferably, a connecting sleeve is fitted onto the outer surface of the drive shaft, and both the stirring rope and the traction rope are connected to the connecting sleeve.
[0016] Preferably, the outer surface of the drive shaft is provided with a support boss to support the connecting sleeve, and the end of the drive shaft is provided with a threaded head, on which a fixing nut is threadedly connected. The fixing nut cooperates with the support boss to clamp and limit the connecting sleeve.
[0017] Preferably, the sealing cap is detachable from the reaction vessel.
[0018] As described above, the catalytic reactor for the production of N-ethylaniline according to this invention has the following beneficial effects:
[0019] 1. This utility model provides a stirring rope on the outer surface of the drive shaft and a stirring shaft bead on the outer surface of the stirring rope. When the drive motor drives the drive shaft, the stirring shaft bead swings under the action of centrifugal force, stirring the N-ethylaniline raw material and catalyst in the storage mechanism. During the stirring and mixing process, the linear area of the stirring rope is relatively small compared to the blade resistance, and the pressure on the drive motor and the connection is small, thus achieving the effect of improving the service life of the equipment.
[0020] 2. This utility model uses a magnetic drive component and a driven disk to magnetically couple to drive the drive shaft, thereby avoiding leakage at the power transmission point and improving the sealing of the reaction vessel. At the same time, when the drive shaft rotation is obstructed, the drive motor can idle to avoid damage to the drive motor.
[0021] 3. This utility model sets a connecting sleeve that fits onto the outer surface of the drive shaft, and supports and fixes the connecting sleeve with the cooperation of the support boss and the fixing nut. When the stirring rope, stirring shaft ball and traction rope are damaged, they can be replaced by disassembling the connecting sleeve, which improves the convenience of maintenance and reduces maintenance costs.
[0022] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description
[0023] Figure 1 The diagram shown is a structural schematic of this utility model.
[0024] Figure 2 The diagram shown is a cross-sectional view of the structure of this utility model.
[0025] Figure 3 This utility model is shown. Figure 2 A magnified schematic diagram of the structure at point A in the middle.
[0026] Figure 4 The diagram shown is a structural schematic of the magnetic transmission component of this utility model.
[0027] Figure 5 The diagram shown is a structural schematic of the stirring mechanism of this utility model.
[0028] Figure 6 The diagram shown is an assembly schematic of the stirring mechanism of this utility model.
[0029] Figure 7 The diagram shown is a structural schematic of the connecting sleeve of this utility model.
[0030] Component designation explanation:
[0031] 1. Storage mechanism; 101. Reaction vessel; 102. Connecting pipe; 103. Sealing cover; 104. Connecting limit cover; 2. Power transmission mechanism; 201. Drive motor; 202. Connecting flange; 203. Magnetic transmission component; 3. Stirring mechanism; 301. Drive shaft; 3011. Support boss; 3012. Threaded head; 3013. Connecting sleeve; 3014. Fixing nut; 302. Driven disk; 303. Stirring rope; 304. Stirring shaft ball; 305. Traction rope. Detailed Implementation
[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0033] Please see Figures 1 to 7It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0034] like Figures 1-3 As shown, this utility model provides a catalytic reactor for the production of N-ethylaniline, including a storage mechanism 1, a power transmission mechanism 2, and a stirring mechanism 3. The storage mechanism 1 stores N-ethylaniline and a catalyst, allowing the N-ethylaniline and catalyst to react inside the storage mechanism 1. The power transmission mechanism 2 transmits power, while the stirring mechanism 3 receives power from the power transmission mechanism 2 and stirs the N-ethylaniline raw material and catalyst in the storage mechanism 1, ensuring uniform mixing. The power transmission mechanism 2 is located at the bottom of the storage mechanism 1, and the stirring mechanism 3 is located inside the storage mechanism 1. Furthermore, the power transmission mechanism 2 and the stirring mechanism 3 are magnetically coupled, and this magnetic coupling improves the sealing of the storage mechanism 1, reducing the possibility of raw material leakage.
[0035] Specifically, the power transmission mechanism 2 includes a drive motor 201. A connecting flange 202 is provided on the top of the drive motor 201, connecting it to the bottom of the storage mechanism 1, allowing for easy disassembly and maintenance of the drive motor 201. To improve the stability of power transmission, a reducer is adapted to be installed on the drive motor 201. A magnetic drive component 203 is provided on the output shaft of the drive motor 201. When the drive motor 201 is working, it drives the magnetic drive component 203 to rotate, thereby driving the stirring mechanism 3 to rotate via magnetic force. The magnetic drive component 203 is close to the bottom of the storage mechanism 1 to improve the penetration of the magnetic field.
[0036] The stirring mechanism 3 includes a drive shaft 301, which is confined within the storage mechanism 1. A driven disk 302 is located at the bottom of the drive shaft 301 and is magnetically coupled to the magnetic drive component 203. When the magnetic drive component 203 rotates, the driven disk 302 rotates along with it under the influence of magnetic force. A stirring rope 303 is provided on the outer surface of the drive shaft 301, and a stirring ball 304 is sleeved on the stirring rope 303. When the drive shaft 301 rotates at high speed, the stirring rope 303 and the stirring ball 304 are thrown up under the action of centrifugal force, thereby stirring the N-ethylaniline raw material and catalyst. Furthermore, when the drive motor 201 is a variable frequency motor, the stirring rope 303 and the stirring ball 304 will produce different swing amplitudes depending on the power transmitted by the drive motor 201, achieving disordered stirring and improving stirring efficiency.
[0037] like Figures 2-4 As shown, in some embodiments, the magnetic transmission component 203 of this invention includes a disk mounted on the output shaft of the transmission motor 201, with multiple equidistantly distributed magnets on the side of the disk facing the storage mechanism 1. The multiple magnets provide magnetic attraction to the driven disk 302, thereby improving the stability of power transmission. This avoids the inability to achieve effective power transmission when a single magnet's poles are misaligned.
[0038] like Figure 2 As shown, in some embodiments, the storage mechanism 1 of this invention includes a reaction tank 101 for storing N-ethylaniline raw material and catalyst, and allowing them to react inside the reaction tank 101. A connecting limiting cover 104 is provided at the axis of the bottom of the reaction tank 101, and a driven disk 302 is disposed inside the connecting limiting cover 104 for supporting and limiting the driven disk 302 and the drive shaft 301. To improve the rotational flexibility of the driven disk 302, a bearing can be provided between the outer surface of the driven disk 302 and the inner wall of the connecting limiting cover 104 to reduce friction.
[0039] like Figure 2 As shown, in some embodiments, the bottom of the reaction vessel 101 of this invention is provided with a connecting pipe 102, through which raw materials can enter and exit the interior of the reaction vessel 101, improving the convenience of raw material injection and discharge. The connecting pipe 102 is equipped with a valve for controlling the opening and closing of the connecting pipe 102. The top of the reaction vessel 101 is provided with a sealing cap 103 for sealing the reaction vessel 101, allowing the catalytic reaction of the raw materials to be carried out under high temperature and high pressure. The remaining components of the catalytic reactor are not improvements of this application and therefore will not be described in detail.
[0040] like Figure 2 and Figure 5As shown, in some embodiments, the outer surface of the drive shaft 301 of this invention is further provided with multiple traction ropes 305. One end of each traction rope 305 is connected to the outer surface of the drive shaft 301, and the other end is connected to the outer surface of the stirring rope 303. The traction ropes 305 restrain the stirring rope 303, preventing the stirring rope 303 from spreading too wide when the drive shaft 301 rotates too fast, thus avoiding collision between the stirring shaft ball 304 and the inner wall of the reaction vessel 101. Simultaneously, the traction ropes 305 increase the shearing of the raw material cross-section, further improving the mixing efficiency. Both the stirring rope 303 and the traction ropes 305 are made of soft, corrosion-resistant materials.
[0041] like Figure 2 and Figure 5 As shown, in some embodiments, the stirring ball 304 of this invention is disposed between two adjacent traction ropes 305, and the stirring ball 304 can slide on the outer surface of the stirring rope 303. This allows the stirring ball 304 to slide on the outer surface of the stirring rope 303, thereby adjusting its position according to different centrifugal forces to achieve stirring at different locations inside the reaction vessel 101. The stirring ball 304 is capsule-shaped to increase the contact area between the stirring ball 304 and the raw materials, improving the stirring effect. Simultaneously, when friction occurs between the stirring ball 304 and the inner wall of the reaction vessel 101, it can convert hard friction into rotational friction, improving the protection of the equipment.
[0042] like Figure 6 and Figure 7 As shown, in some embodiments, a connecting sleeve 3013 is sleeved on the outer surface of the drive shaft 301 of this utility model, and the stirring rope 303 and the traction rope 305 are both connected to the connecting sleeve 3013. When the stirring rope 303, the stirring shaft ball 304, and the traction rope 305 are damaged, it is not necessary to replace the entire drive shaft 301; only the connecting sleeve 3013 needs to be disassembled for replacement, which improves the convenience of maintenance and reduces maintenance costs.
[0043] like Figure 6 As shown, in some embodiments, the outer surface of the drive shaft 301 of this invention is provided with a support boss 3011 to support the connecting sleeve 3013 and fix its installation position. The end of the drive shaft 301 is provided with a threaded head 3012, on which a fixing nut 3014 is threaded. The fixing nut 3014 cooperates with the support boss 3011 to clamp and limit the connecting sleeve 3013, thereby completely fixing the connecting sleeve 3013. When replacement or maintenance is required, the connecting sleeve 3013 can be separated by removing the fixing nut 3014, improving ease of use.
[0044] It should be noted that the sealing cap 103 is detachable from the reaction vessel 101. During maintenance, the sealing cap 103 can be removed to allow maintenance personnel to enter the interior of the reaction vessel 101 for maintenance and cleaning. Simultaneously, the lightweight stirring rope 303 and traction rope 305 reduce the overall weight of the connecting sleeve 3013 during maintenance, allowing it to be easily removed.
[0045] In summary, the catalytic reactor for N-ethylaniline production of this invention, by setting a stirring rope 303 on the outer surface of the drive shaft 301 and attaching a stirring shaft bead 304 to the outer surface of the stirring rope 303, allows the stirring shaft bead 304 to swing under centrifugal force when the drive motor 201 drives the drive shaft 301, thus stirring the N-ethylaniline raw material and catalyst in the storage mechanism 1. During the stirring and mixing process, the linear area of the stirring rope 303 has a smaller resistance than the blades, resulting in less pressure on the drive motor 201 and the connection points, thereby improving the service life of the equipment.
[0046] This invention uses magnetic coupling between the magnetic transmission component 203 and the driven disk 302 to drive the transmission shaft 301, thereby avoiding leakage at the power transmission point and improving the sealing of the reaction vessel 101. At the same time, when the rotation of the transmission shaft 301 is obstructed, the transmission motor 201 can run idle to avoid damage to the transmission motor 201.
[0047] This utility model provides a connecting sleeve 3013 that is fitted onto the outer surface of the drive shaft 301. The connecting sleeve 3013 is supported and fixed by the support boss 3011 and the fixing nut 3014. When the stirring rope 303, stirring shaft ball 304 and traction rope 305 are damaged, they can be replaced by disassembling the connecting sleeve 3013, which improves the convenience of maintenance and reduces maintenance costs.
[0048] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.
[0049] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A catalytic reactor for the production of N-ethylaniline, characterized in that, It includes a material storage mechanism (1), a power transmission mechanism (2), and a stirring mechanism (3); The power transmission mechanism (2) is located at the bottom of the storage mechanism (1), the stirring mechanism (3) is located inside the storage mechanism (1), and the power transmission mechanism (2) and the stirring mechanism (3) are magnetically coupled. The power transmission mechanism (2) includes a drive motor (201), the top of which is provided with a connecting flange (202) connected to the bottom of the storage mechanism (1), and a magnetic drive component (203) is provided on the output shaft of the drive motor (201), which is close to the bottom of the storage mechanism (1). The stirring mechanism (3) includes a drive shaft (301), a driven disk (302) is provided at the bottom of the drive shaft (301), the driven disk (302) is magnetically coupled to the magnetic transmission component (203), and a stirring rope (303) is provided on the outer surface of the drive shaft (301), and a stirring shaft bead (304) is sleeved on the stirring rope (303).
2. The catalytic reaction kettle for producing N-ethylaniline according to claim 1, characterized in that: The magnetic drive component (203) includes a disc mounted on the output shaft of the drive motor (201), and a plurality of equally spaced magnets are provided on the side of the disc facing the storage mechanism (1).
3. The catalytic reaction kettle for producing N-ethylaniline according to claim 1, characterized in that: The storage mechanism (1) includes a reaction tank (101), and a connecting limit cover (104) is provided at the bottom axis of the reaction tank (101). The driven disk (302) is located inside the connecting limit cover (104).
4. The catalytic reaction kettle for producing N-ethylaniline according to claim 3, characterized in that: The bottom of the reaction vessel (101) is provided with a connecting pipe (102), and the top of the reaction vessel (101) is provided with a sealing cap (103).
5. The catalytic reaction kettle for producing N-ethylaniline according to claim 1, characterized in that: The outer surface of the drive shaft (301) is also provided with a number of traction ropes (305). One end of the traction rope (305) is connected to the outer surface of the drive shaft (301), and the other end is connected to the outer surface of the stirring rope (303).
6. The catalytic reaction kettle for producing N-ethylaniline according to claim 5, characterized in that: The stirring bead (304) is disposed between two adjacent traction ropes (305). The stirring bead (304) is capsule-shaped and can slide on the outer surface of the stirring rope (303).
7. The catalytic reactor for N-ethylaniline production according to claim 5, characterized in that: The outer surface of the drive shaft (301) is fitted with a connecting sleeve (3013), and the stirring rope (303) and the traction rope (305) are both connected to the connecting sleeve (3013).
8. The catalytic reaction kettle for producing N-ethylaniline according to claim 7, characterized in that: The outer surface of the drive shaft (301) is provided with a support boss (3011) to support the connecting sleeve (3013). The end of the drive shaft (301) is provided with a threaded head (3012). A fixing nut (3014) is threaded onto the threaded head (3012). The fixing nut (3014) cooperates with the support boss (3011) to clamp and limit the connecting sleeve (3013).
9. The catalytic reaction kettle for producing N-ethylaniline according to claim 4, characterized in that: The sealing cap (103) can be separated from the reaction vessel (101).