A silane coupling agent purification distillation column

Abstract

The utility model belongs to the field of distillation column especially a kind of silane coupling agent purification distillation column, it includes tower base, the top of tower base is fixedly installed with lower mounting disc, the top of lower mounting disc is successively fixedly installed with multiple detachable tower sections from below, and the upper and lower ends of multiple tower sections are fixedly installed with lower mounting disc and upper mounting disc respectively;The inboard of multiple tower sections is fixedly installed with two fixed supports, and the same tower section inboard is rotatably installed with the same rotating shaft on the side of mutual approach of two fixed supports, and the outside of multiple rotating shafts is fixedly provided with packing tray. The utility model can make the rotation of internal packing tray, and the rotating packing tray can constantly agitate liquid, destroy the tendency of liquid converging to tower wall, make liquid more evenly distributed on packing surface, constantly update gas-liquid contact surface, thereby strengthen mass transfer efficiency, and realize the automatic centering and preliminary locking of tower section, without artificial fine adjustment.

Description

Technical Field

[0001] This utility model relates to the field of distillation tower technology, and in particular to a distillation tower for purifying silane coupling agents. Background Technology

[0002] A silane coupling agent purification distillation column is a specialized chemical equipment used for the distillation purification of silane coupling agents. It utilizes the differences in volatility among the components in a mixture, and through heating, causes the material to undergo multiple partial vaporizations and condensations within the column, thereby achieving efficient separation of the target product from impurities. This column typically employs high-efficiency packing or tray structures to increase the gas-liquid contact area and improve separation efficiency. Its core function is to remove low-boiling-point precursors, high-boiling-point byproducts, and other impurities from the crude synthesis product, ultimately obtaining a high-purity silane coupling agent product at the top or side stream. It is a key device for ensuring the quality and performance of the product.

[0003] However, in traditional distillation columns, when the liquid flows down the packing surface, it tends to converge towards the column wall, forming a wall flow effect. This results in the packing in the central area of ​​the column not being effectively wetted, reducing the contact area between the gas and liquid phases and lowering the mass transfer efficiency. Furthermore, when expanding the production capacity of traditional column sections, the installation process usually requires multiple cumbersome steps such as drilling, temporary fixing, and re-tightening. Especially for large column bodies, alignment and fixing are very difficult and time-consuming, posing safety hazards. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A silane coupling agent purification distillation column includes a column base. A lower mounting plate is fixedly installed on the top of the column base. Multiple detachable column sections are fixedly installed sequentially from bottom to top on the top of the lower mounting plate. The upper and lower ends of the multiple column sections are respectively fixedly installed with a lower mounting plate and an upper mounting plate. Two fixed supports are fixedly installed on the inner side of each of the multiple column sections. The two fixed supports located on the inner side of the same column section are rotatably mounted with the same rotating shaft on their side that is close to each other. Packing discs are fixedly sleeved on the outer side of the multiple rotating shafts.

[0006] Specifically, a discharge head is fixedly installed on one side of the tower base, a reboiler is provided on the inner side of the tower base, a feed head is fixedly installed on one side of the middle tower section among the multiple tower sections, and the reboiler is installed on the bottom inner wall of the tower base to heat the kettle liquid and generate rising steam.

[0007] Specifically, the top of the uppermost of the multiple lower mounting plates is provided with a tower top cover. An upper mounting plate is fixedly installed at the bottom of the tower top cover, and a condenser is fixedly installed at the top of the tower top cover. The condenser condenses the silane coupling agent vapor rising to the top of the tower into liquid. Part of the liquid is taken out as a high-purity product, and the other part is returned to the tower as reflux liquid to have countercurrent contact with the rising vapor, thereby achieving fine separation.

[0008] Specifically, observation windows are fixedly installed on one side of multiple tower sections. These windows allow direct observation of the tower's interior, such as the rotation status of the packing disc, the distribution of the liquid, and whether foaming or abnormal blockage has occurred, facilitating daily inspections and fault diagnosis.

[0009] Specifically, a motor bracket is fixedly installed on one side of each of the multiple tower sections, and a permanent magnet synchronous motor is fixedly installed on the inner side of each of the multiple motor brackets. An outer rotor is fixedly sleeved on the output shaft of each of the multiple permanent magnet synchronous motors, and multiple permanent magnets are provided on each of the multiple outer rotors. This solves the shaft sealing problem of the rotating moving parts inside the tower and avoids material leakage and pollution and maintenance problems caused by mechanical seals.

[0010] Specifically, multiple packing discs are fixedly fitted with inner rotors on their outer sides, and multiple inner rotors are equipped with multiple permanent magnets. The multiple inner rotors are adapted to the corresponding outer rotors. When the outer rotor outside the tower rotates under the drive of the permanent magnet synchronous motor, the magnetic coupling force between the permanent magnets drives the inner rotor inside the tower to rotate synchronously through the tower wall, thereby driving the packing discs to rotate.

[0011] Specifically, multiple upper mounting plates have multiple light holes on their tops, bolts are slidably installed on the inner side of each light hole, annular protrusions are provided on the bottom of each upper mounting plate, sealing rings are fixedly installed on the bottom of each annular protrusion, and multiple fixing grooves are provided on the outer side of each annular protrusion. The annular protrusions and sealing rings can ensure the airtightness of the tower section connection.

[0012] Specifically, multiple threaded holes are provided on the top of each of the multiple lower mounting plates, and multiple bolts are adapted to the corresponding threaded holes. Each of the multiple lower mounting plates is provided with a sealing groove on the top, and multiple sealing rings abut against the bottom inner wall of the corresponding sealing groove. The sealing groove is used to accommodate the sealing ring of the upper mounting plate. When the upper and lower mounting plates are pressed together, the sealing ring is compressed in the sealing groove to form a reliable static seal.

[0013] Specifically, multiple guide grooves are provided on the top of each of the multiple lower mounting plates. Limiting sliders are slidably installed on the bottom inner walls of each of the multiple guide grooves. Each limiting slider is adapted to a corresponding fixing groove. Linkage metal strips are fixedly installed on the inclined surfaces of each limiting slider. When the slider is squeezed, it pushes the limiting slider to slide horizontally out and lock into the fixing groove, forming a mechanical interlock to prevent loosening, which greatly enhances the safety of the connection.

[0014] Specifically, a pressing slider is slidably installed on one inner wall of each of the multiple guide grooves. The inclined surfaces of the multiple pressing sliders abut against the inclined surfaces of the corresponding limit sliders. A linkage groove is opened on the inclined surfaces of the multiple pressing sliders. Multiple linkage metal strips are adapted to the corresponding linkage grooves. A support spring is fixedly installed on the bottom inner wall of each of the multiple guide grooves. The top of the multiple support springs is fixedly connected to the bottom of the corresponding pressing slider. The linkage metal strips and linkage grooves ensure the synchronization and stability of the limit slider and the pressing slider during the movement.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model discloses a silane coupling agent purification distillation column. Through the magnetic coupling drive of the outer rotor and the inner rotor, the internal packing disk rotates. The rotating packing disk can continuously agitate the liquid, destroy the tendency of the liquid to converge towards the column wall, make the liquid more evenly distributed on the packing surface, and continuously renew the gas-liquid contact surface, thereby enhancing the mass transfer efficiency.

[0017] This utility model discloses a silane coupling agent purification distillation column. When adding column sections, gravity drives the extrusion slider, which in turn forces the limiting slider to extend radially through the inclined surface and automatically engage with the fixing groove of the lower column section. This process achieves automatic centering and initial locking of the column section without the need for manual fine adjustment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a silane coupling agent purification distillation tower proposed in this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of a silane coupling agent purification distillation tower proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of a column section of a silane coupling agent purification distillation column proposed in this utility model.

[0021] Figure 4 This is a three-dimensional cross-sectional view of the motor support, permanent magnet synchronous motor and outer rotor of a silane coupling agent purification distillation tower proposed in this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the upper and lower mounting plates of a silane coupling agent purification distillation tower proposed in this utility model.

[0023] Figure 6This is a three-dimensional structural diagram showing the lower mounting plate, supporting spring, limiting slider, linkage metal strip, extrusion slider, and linkage groove of a silane coupling agent purification distillation tower proposed in this utility model.

[0024] In the diagram: 1. Tower base; 2. Discharge head; 3. Feed head; 4. Observation window; 5. Tower top cover; 6. Condenser; 7. Upper mounting plate; 8. Lower mounting plate; 9. Tower section; 10. Fixed bracket; 11. Rotating shaft; 12. Packing disc; 13. Inner rotor; 14. Motor bracket; 15. Permanent magnet synchronous motor; 16. Outer rotor; 17. Bolt; 18. Threaded hole; 19. Fixing groove; 20. Sealing ring; 21. Support spring; 22. Limit slider; 23. Linkage metal strip; 24. Extrusion slider; 25. Linkage groove. Detailed Implementation

[0025] Reference Figure 1-6 A distillation column for purifying silane coupling agents includes a column base 1. A lower mounting plate 8 is fixedly installed on the top of the column base 1. Multiple detachable column sections 9 are fixedly installed on the top of the lower mounting plate 8 from bottom to top. The upper and lower ends of the multiple column sections 9 are respectively fixedly installed with a lower mounting plate 8 and an upper mounting plate 7. Two fixed supports 10 are fixedly installed on the inner side of each of the multiple column sections 9. The two fixed supports 10 located on the inner side of the same column section 9 are rotatably installed with the same rotating shaft 11 on the side close to each other. Packing discs 12 are fixedly sleeved on the outer side of the multiple rotating shafts 11.

[0026] In this embodiment, a discharge head 2 is fixedly installed on one side of the tower base 1, and a reboiler is provided on the inner side of the tower base 1. Among the multiple tower sections 9, a feed head 3 is fixedly installed on one side of the middle tower section 9. The reboiler is installed on the bottom inner wall of the tower base 1 to heat the kettle liquid and generate rising steam.

[0027] In this embodiment, the top of the uppermost lower mounting plate 8 among the multiple lower mounting plates 8 is provided with a tower top cover 5, the bottom of the tower top cover 5 is fixedly installed with an upper mounting plate 7, and the top of the tower top cover 5 is fixedly installed with a condenser 6. The condenser 6 condenses the silane coupling agent vapor rising to the top of the tower into a liquid. Part of it is taken out as a high-purity product, and the other part is returned to the tower as reflux liquid, which comes into countercurrent contact with the rising vapor, thereby achieving fine separation.

[0028] In this embodiment, observation windows 4 are fixedly installed on one side of each of the multiple tower sections 9. The observation windows 4 can directly observe the situation inside the tower, such as the rotation status of the packing disc 12, the distribution of liquid, whether foam or abnormal blockage occurs, etc., which facilitates daily inspection and fault diagnosis.

[0029] In this embodiment, a motor bracket 14 is fixedly installed on one side of each of the multiple tower sections 9, and a permanent magnet synchronous motor 15 is fixedly installed on the inner side of each of the multiple motor brackets 14. An outer rotor 16 is fixedly sleeved on the output shaft of each of the multiple permanent magnet synchronous motors 15, and multiple permanent magnets are provided on each of the multiple outer rotors 16. This solves the problem of shaft sealing of rotating moving parts inside the tower and avoids material leakage and pollution and maintenance problems caused by mechanical seals.

[0030] In this embodiment, an inner rotor 13 is fixedly sleeved on the outer side of each of the multiple packing discs 12. Each of the multiple inner rotors 13 is provided with a multiple permanent magnet. Each of the multiple inner rotors 13 is adapted to the corresponding outer rotor 16. When the outer rotor 16 outside the tower rotates under the drive of the permanent magnet synchronous motor 15, the magnetic coupling force between the permanent magnets drives the inner rotor 13 inside the tower to rotate synchronously through the tower wall, thereby driving the packing disc 12 to rotate.

[0031] In this embodiment, multiple light holes are provided on the top of multiple upper mounting plates 7, and bolts 17 are slidably installed on the inner side of multiple light holes. Annular protrusions are provided on the bottom of multiple upper mounting plates 7, and sealing rings 20 are fixedly installed on the bottom of multiple annular protrusions. Multiple fixing grooves 19 are provided on the outer side of multiple annular protrusions. The annular protrusions and sealing rings 20 can ensure the airtightness of the connection of the tower section 9.

[0032] In this embodiment, the top of each of the multiple lower mounting plates 8 is provided with multiple threaded holes 18, and multiple bolts 17 are respectively adapted to the corresponding threaded holes 18. The top of each of the multiple lower mounting plates 8 is provided with a sealing groove, and multiple sealing rings 20 respectively abut against the bottom inner wall of the corresponding sealing groove. The sealing groove is used to accommodate the sealing rings 20 of the upper mounting plate 7. When the upper and lower mounting plates are pressed together, the sealing rings 20 are compressed in the sealing groove to form a reliable static seal.

[0033] In this embodiment, multiple guide grooves are provided on the top of multiple lower mounting plates 8, and limit sliders 22 are slidably installed on the bottom inner wall of multiple guide grooves. Multiple limit sliders 22 are respectively adapted to the corresponding fixing grooves 19. Linkage metal strips 23 are fixedly installed on the inclined surface of multiple limit sliders 22. The squeezing slider 24 pushes the limit slider 22 to slide horizontally out and lock into the fixing groove 19, forming a mechanical interlock to prevent loosening, which greatly enhances the safety of the connection.

[0034] In this embodiment, a pressing slider 24 is slidably installed on one inner wall of each of the multiple guide grooves. The inclined surfaces of the multiple pressing sliders 24 abut against the inclined surfaces of the corresponding limiting sliders 22. A linkage groove 25 is provided on the inclined surfaces of the multiple pressing sliders 24. Multiple linkage metal strips 23 are adapted to the corresponding linkage grooves 25. A support spring 21 is fixedly installed on the bottom inner wall of each of the multiple guide grooves. The top of the multiple support springs 21 is fixedly connected to the bottom of the corresponding pressing slider 24. The linkage metal strips 23 and the linkage grooves 25 ensure the synchronization and stability of the limiting sliders 22 and the pressing sliders 24 during the movement.

[0035] Working Principle: During the purification of silane coupling agents, to improve purification efficiency and the purity of subsequent products, the operator starts the permanent magnet synchronous motor 15, which drives the outer rotor 16 along with its permanent magnets to rotate, generating a rotating magnetic field. This rotating magnetic field enters the distillation column through section 9. Multiple permanent magnets installed on the inner rotor 13 inside the column are firmly locked by this rotating magnetic field and rotate synchronously. The rotation of the inner rotor 13 drives the innerly fixed packing disc 12 to rotate around the shaft 11. The rotating packing disc 12 effectively disrupts the wall flow effect, continuously renews the gas-liquid contact surface, enhances mass transfer efficiency, and also acts as a self-cleaning agent, preventing high-boiling-point residues or polymers from coking and clogging the surface of the packing disc 12. When it is necessary to expand the equipment's capacity, the operator first removes the top cover 5 of the column, and then installs the additional column section 9 using a crane. The bottom of the additional column section 9... The upper mounting plate 7 is aligned with the lower mounting plate 8 on the top of the original tower section 9. The crane places the upper mounting plate 7 on the lower mounting plate 8. At this time, the upper mounting plate 7, together with the weight of the added tower section 9, presses against the multiple extrusion sliders 24 on the top of the lower mounting plate 8. The multiple extrusion sliders 24 move downward and apply pressure to the corresponding limit sliders 22. Since the inclined surface of the extrusion slider 24 abuts against the inclined surface of the limit slider 22, when the extrusion slider 24 applies downward pressure to the limit slider 22, the limit slider 22 moves radially along the corresponding guide groove. The multiple limit sliders 22 move radially and respectively get into the corresponding fixing grooves 19, thereby limiting and fixing the upper mounting plate 7, and then initially fixing the added tower section 9. Then, the workers pass multiple bolts 17 through the corresponding light holes and thread them into the corresponding threaded holes 18 to complete the fixed installation of the tower section 9.

[0036] The technological advancements of this invention compared to existing technologies are as follows: the internal packing disc 12 can rotate, and the rotating packing disc 12 can continuously agitate the liquid, disrupting the tendency of the liquid to converge towards the tower wall, making the liquid more evenly distributed on the packing surface, continuously renewing the gas-liquid contact surface, thereby enhancing the mass transfer efficiency, and realizing automatic centering and initial locking of the tower section 9 without the need for manual fine adjustment.

Claims

1. A distillation column for purifying silane coupling agents, characterized in that, The tower base (1) is included. A lower mounting plate (8) is fixedly installed on the top of the tower base (1). Multiple detachable tower sections (9) are fixedly installed on the top of the lower mounting plate (8) from bottom to top. The lower mounting plate (8) and the upper mounting plate (7) are fixedly installed at the upper and lower ends of the multiple tower sections (9) respectively. Two fixed supports (10) are fixedly installed on the inner side of multiple tower sections (9). The two fixed supports (10) located on the inner side of the same tower section (9) are rotatably installed on the side close to each other, and a packing disc (12) is fixedly sleeved on the outer side of multiple rotating shafts (11).

2. The silane coupling agent purification distillation column according to claim 1, characterized in that, A discharge head (2) is fixedly installed on one side of the tower base (1), and a reboiler is provided on the inner side of the tower base (1). A feed head (3) is fixedly installed on one side of the tower section (9) located in the middle of the multiple tower sections (9).

3. The silane coupling agent purification distillation column according to claim 1, characterized in that, The top of the uppermost of the multiple lower mounting plates (8) is provided with a tower top cover (5), the bottom of the tower top cover (5) is fixedly installed with an upper mounting plate (7), and the top of the tower top cover (5) is fixedly installed with a condenser (6).

4. The silane coupling agent purification distillation column according to claim 1, characterized in that, Observation windows (4) are fixedly installed on one side of multiple tower sections (9).

5. The silane coupling agent purification distillation column according to claim 1, characterized in that, A motor bracket (14) is fixedly installed on one side of each of the multiple tower sections (9), and a permanent magnet synchronous motor (15) is fixedly installed on the inner side of each of the multiple motor brackets (14). An outer rotor (16) is fixedly sleeved on the output shaft of each of the multiple permanent magnet synchronous motors (15), and multiple permanent magnets are provided on each of the multiple outer rotors (16).

6. The silane coupling agent purification distillation column according to claim 5, characterized in that, Multiple packing discs (12) are fixedly fitted with inner rotors (13) on their outer sides. Multiple inner rotors (13) are provided with multiple permanent magnets. The multiple inner rotors (13) are respectively matched with the corresponding outer rotors (16).

7. The silane coupling agent purification distillation column according to claim 1, characterized in that, Multiple upper mounting plates (7) have multiple light holes on their tops, and bolts (17) are slidably installed on the inner side of each light hole. Multiple upper mounting plates (7) have annular protrusions on their bottoms, and sealing rings (20) are fixedly installed on the bottom of each annular protrusion. Multiple fixing grooves (19) are opened on the outer side of each annular protrusion.

8. The silane coupling agent purification distillation column according to claim 7, characterized in that, Multiple threaded holes (18) are provided on the top of multiple lower mounting plates (8), and multiple bolts (17) are adapted to the corresponding threaded holes (18). Multiple sealing grooves are provided on the top of multiple lower mounting plates (8), and multiple sealing rings (20) abut against the bottom inner wall of the corresponding sealing groove.

9. A silane coupling agent purification distillation column according to claim 8, characterized in that, Multiple guide grooves are provided on the top of multiple lower mounting plates (8), and limit sliders (22) are slidably installed on the bottom inner wall of multiple guide grooves. Multiple limit sliders (22) are adapted to the corresponding fixed grooves (19), and linkage metal strips (23) are fixedly installed on the inclined surface of multiple limit sliders (22).

10. A silane coupling agent purification distillation column according to claim 9, characterized in that, Each of the multiple guide grooves has a slidably mounted extrusion slider (24) on one side of its inner wall. The inclined surfaces of the multiple extrusion sliders (24) abut against the inclined surfaces of the corresponding limit sliders (22). Each of the multiple extrusion sliders (24) has a linkage groove (25) on its inclined surface. Multiple linkage metal strips (23) are adapted to the corresponding linkage grooves (25). Each of the multiple guide grooves has a fixedly mounted support spring (21) on its bottom inner wall. The top of each of the multiple support springs (21) is fixedly connected to the bottom of the corresponding extrusion slider (24).

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