Apparatus for purifying a multi-component mixed amine

Abstract

The application provides a multi-component mixed amine purification device, which comprises a distillation column, a condenser and a reflux ratio controller, the reflux ratio controller comprises a liquid bin, a conveying pipeline connected to the lower end of the liquid bin and a baffle slidingly installed in the conveying pipeline, one end of the conveying pipeline is a reflux port, the other end is a sampling outlet, a feeding port is arranged at the upper end of the liquid bin, a power source for driving the baffle to slide is installed on the outer wall of the conveying pipeline, a rotating roller is rotatably installed in the liquid bin, a plurality of liquid receiving grooves are formed in the outer wall of the rotating roller, a driving piece for driving the rotating roller to rotate is installed on the outer wall of the liquid bin, an adjusting assembly is installed in the rotating roller, and the adjusting assembly can close or adjust the capacity of the two liquid receiving grooves close to the end of the rotating roller. The application can better control the reflux ratio and improve the purification effect.

Description

Technical Field

[0001] This application relates to the technical field of purification equipment, and in particular to an equipment for purifying multi-component mixed amines. Background Technology

[0002] Polyethylene polyamines are generally multi-component mixed amines, including diethylenetriamine and triethylenetetramine, and are one of the main raw materials for polyamide resin production. In order to improve the purity of the raw materials and reduce quality problems in polyamide resin products, the mixed amine raw materials are generally purified using purification equipment.

[0003] The purification equipment consists of a distillation column, a condenser, and a reflux ratio controller. The multi-component raw material amine is heated through the distillation kettle. The lighter components with lower boiling points are preferentially vaporized to form upward-flowing steam, which enters the condenser and is cooled by the cooling medium, and then re-liquefied into condensate. The condensate flows into the reflux ratio controller, part of which is sent back to the top of the distillation column as reflux liquid, and part of which is collected as produced liquid.

[0004] By controlling the reflux ratio (reflux volume / output volume), the purity of the separated product can be effectively adjusted. A higher reflux ratio results in more efficient mass transfer within the column; however, excessively high reflux ratios also lead to changes in throughput and energy consumption. In the purification of multi-component amines, the reflux ratio is typically controlled at 3:1, 3.5:1, or 4:1. Traditional reflux ratio controllers are mainly swing-type controllers, consisting of an outer cylinder, baffles, a separator, and a solenoid valve. The reflux ratio is adjusted by the timed swinging of the separator. The reflux and output flow rates are pulsed, switching at fixed intervals. It relies on a time ratio rather than a flow rate ratio. Because the flow rate in the reflux pipe fluctuates, the actual reflux ratio deviates from the set value, thus leaving room for improvement. Summary of the Invention

[0005] This application provides an apparatus for purifying multi-component mixed amines.

[0006] The technical solution adopted in this application is as follows: A device for purifying multi-component mixed amines includes a distillation column, a condenser, and a reflux ratio controller. The reflux ratio controller includes a liquid tank, a conveying pipe connected to the lower end of the liquid tank, and a baffle slidably installed in the conveying pipe. One end of the conveying pipe is a reflux port, and the other end is a sampling port. A feed port is provided at the upper end of the liquid tank. A power source for driving the baffle to slide is installed on the outer wall of the conveying pipe. A rotating roller is rotatably installed in the liquid tank. Multiple liquid-collecting grooves are formed on the outer wall of the rotating roller. The liquid-collecting grooves are spaced apart along the axial direction of the rotating roller. The rotating roller divides the liquid tank into an upper chamber and a lower chamber. The upper end of the baffle extends into the lower chamber and abuts against the side wall of the rotating roller. A driving component for driving the rotating roller to rotate is installed on the outer wall of the liquid tank. An adjustment component is installed inside the rotating roller. The adjustment component can close the capacity of two liquid-collecting grooves near the end of the rotating roller or adjust their capacity.

[0007] By adopting the above technical solution, the component raw materials are purified by controlling the temperature of the distillation tower through distillation. The condensate in the condenser flows into the reflux ratio controller. During the rotation of the rotating roller, the condensate in the liquid tank flows into the liquid receiving tank. When the liquid receiving tank rotates to the lower chamber, the condensate can flow into the conveying pipeline. By controlling the position of the baffle, the condensate can flow into the reflux port and the outlet respectively. Since the condensate in the liquid receiving tank is always full, the control baffle can control the reflux ratio by controlling the liquid volume. The volume of the two liquid receiving tanks at one end can be adjusted or closed, making it easier to control the reflux ratio by the liquid volume.

[0008] Optionally, one end of the rotating roller is provided with an installation groove, in which an installation cylinder is installed. An operating component is installed on the installation cylinder. The installation cylinder includes a positioning cylinder installed in the installation groove, a first cylinder rotatably connected to the positioning cylinder, and a second cylinder rotatably connected to the first cylinder. The operating component is used to drive the first cylinder or the second cylinder to rotate. Two receiving grooves near the opening of the installation groove are connected to the installation groove and correspond to the first cylinder and the second cylinder respectively. An expansion groove is provided on the inner wall of the receiving groove. The adjusting component includes an adjusting plate disposed on the side wall of the first cylinder and the second cylinder. The adjusting plate extends into the expansion groove. A closing plate is provided at the end of the adjusting plate away from the installation groove. The closing plate can be used to close the receiving groove.

[0009] By adopting the above technical solution, the operating component can drive the first cylinder or the second cylinder to rotate, thereby causing the adjusting plate to move in the volume-increasing tank, and thus adjusting the volume of the liquid receiving tank. When the adjusting plate abuts against the inner wall of the liquid receiving tank, the sealing plate closes the opening of the receiving tank, thereby closing the liquid receiving tank.

[0010] Optionally, the inner wall of the expansion tank is provided with a receiving groove, and the sealing plate can be slidably inserted into the receiving groove.

[0011] By adopting the above technical solution, when the adjusting plate is in the expansion tank, the receiving tank can be used to accommodate the closing plate.

[0012] Optionally, a first positioning member for limiting the rotation of the first cylinder is provided between the first cylinder and the positioning cylinder, and a second positioning member for limiting the rotation of the second cylinder is provided between the first cylinder and the second cylinder. The operating member includes a first operating rod that slides through the end face of the second cylinder and a second operating rod that slides through the first operating rod. Sliding the first operating rod can release the limiting effect of the second positioning member on the second cylinder, and rotating the first operating rod can drive the second cylinder to rotate. Sliding the second operating rod can release the limiting effect of the first positioning member on the first cylinder, and rotating the second operating rod can drive the first cylinder to rotate.

[0013] By adopting the above technical solution, the first and second cylinders are not easily rotated under the action of the first and second positioning components, but can be rotated accordingly by the first or second operating rod, thereby achieving the effect of adjusting the volume of the liquid receiving tank.

[0014] Optionally, the first positioning member includes a first positioning plate slidably disposed in the positioning cylinder and a first elastic member disposed between the positioning cylinder and the first positioning plate. The inner wall of the first cylinder is provided with a first annular protrusion, and the first elastic member drives the first positioning plate to abut against the first annular protrusion to restrict the rotation of the first cylinder. The inner wall of the second cylinder is provided with a second annular protrusion, and the second positioning member includes a second elastic member disposed on the inner wall of the first cylinder and a second positioning plate slidably disposed in the first cylinder. The second elastic member drives the second positioning plate to abut against the second annular protrusion to restrict the rotation of the second cylinder. The first operating lever can slide to drive the second positioning plate and the second annular protrusion to separate, and the second operating lever can slide to drive the first positioning plate and the first annular protrusion to separate.

[0015] By adopting the above technical solution, the first elastic element drives the first positioning plate to press against the first annular protrusion, thereby positioning the first cylinder, and the second elastic element drives the second positioning plate to press against the second annular protrusion, thereby positioning the second cylinder.

[0016] Optionally, during the first operation sliding, one end of the first operating rod abuts against the second positioning plate and pushes the second positioning plate and the second annular protrusion to separate, and a reset member is provided between the first operating rod and the end face of the second cylinder.

[0017] By adopting the above technical solution, the first operating lever can be reset under the action of the reset component.

[0018] Optionally, one end of the second operating rod slides through the second positioning plate and extends into the first cylinder. The outer wall of the second operating rod is provided with a pressing plate. When the second operating rod slides, one end abuts against the first positioning plate and pushes the first positioning plate and the first annular protrusion to separate. The pressing plate can press against the first annular protrusion so that the rotation of the second operating rod synchronously drives the first cylinder to rotate.

[0019] By adopting the above technical solution, the clamping plate is pressed against the first annular protrusion, and rotating the second operating lever can synchronously drive the first cylinder to rotate.

[0020] Optionally, ten receiving grooves are spaced apart along the axial direction of the rotating roller, and the maximum volume of the expansion groove is the same as the volume of the receiving groove.

[0021] Optionally, the inner wall of the upper cavity is provided with an extension plate, which is arc-shaped and fits against the side wall of the rotating roller. When the rotating roller rotates, the extension plate can cover the receiving groove.

[0022] Optionally, a locking rod is provided on the side wall of the first operating lever, the locking rod being used to restrict the sliding of the second operating lever.

[0023] By adopting the above technical solution, the second operating lever is less likely to slide arbitrarily under the action of the locking rod.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. During the purification process, the reflux ratio can be controlled by adjusting the position of the baffle. Combined with the adjustment of the volume of the receiving tank, it is easier to control the reflux ratio at the desired value. 2. The first and second cylinders can be controlled by the first and second operating levers, thereby adjusting the volume of the two liquid receiving tanks. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the reflux ratio controller in an embodiment of this application; Figure 3 This is a schematic diagram of the rotating roller in an embodiment of this application; Figure 4 This is a schematic diagram of the mounting slot in an embodiment of this application; Figure 5 This is a cross-sectional schematic diagram of the mounting cylinder in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Distillation column; 2. Condenser; 3. Reflux ratio controller; 4. Liquid tank; 41. Upper chamber; 42. Lower chamber; 5. ; 6. Conveying pipe; 7. Baffle; 8. Reflux port; 9. Outlet port; 10. Feed port; 11. Power source; 12. Rotating roller; 13. Liquid receiving tank; 14. Driving component; 15. Adjusting assembly; 151. Adjusting plate; 152. Sealing plate; 16. Mounting groove; 17. Mounting cylinder; 171. Positioning cylinder; 172. First 173. Second cylinder; 18. Operating component; 181. First operating lever; 182. Second operating lever; 19. Capacity expansion groove; 20. Receiving groove; 21. First positioning component; 211. First elastic component; 212. First positioning plate; 22. Second positioning component; 221. Second elastic component; 222. Second positioning plate; 23. First annular protrusion; 24. Second annular protrusion; 25. Reset component; 26. Abutment plate; 27. Extension plate; 28. Locking rod; 29. ​​Connecting seat. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] According to Figure 1 This application discloses an apparatus for purifying multi-component mixed amines, including a distillation column 1, a condenser 2, and a reflux ratio controller 3. The distillation column 1 is used for the rectification and separation of multi-component mixed amines. The vapor at the top of the distillation column 1 enters the condenser 2 and is condensed into liquid. The liquid enters the reflux ratio controller 3, which controls the ratio of reflux to collection. Part of the liquid is refluxed back to the distillation column 1, while the rest is collected as product.

[0029] Reference Figure 1 and Figure 2 The reflux ratio controller 3 includes a liquid tank 4, a conveying pipe 6 connected to the lower end of the liquid tank 4, and a baffle 7 slidably installed in the conveying pipe 6. The liquid tank 4 has an inverted T-shaped structure. An inlet 10 is provided at the upper end of the liquid tank 4. The inlet 10 is connected to the liquid outlet of the condenser 2 through a pipe, and the condensate flows into the liquid tank 4 through the inlet 10. The conveying pipe 6 is horizontally arranged below the liquid tank 4. One end of the conveying pipe 6 is a reflux port 8, which is connected to the top reflux inlet of the distillation column 1 through a pipe, and is used to send the reflux liquid back to the distillation column 1. The other end of the conveying pipe 6 is a collection port 9, which is connected to the collection pipe and is used to collect the purified product.

[0030] A baffle 7 is vertically installed in the conveying pipe 6 to separate the condensate, allowing part of it to enter the return port 8 and part to enter the collection port 9. A power source 11 for driving the baffle 7 to slide is installed on the outer wall of the conveying pipe 6. In this embodiment, the power source 11 is an electric actuator, the telescopic end of which is fixedly connected to the baffle 7, driving the baffle 7 to slide back and forth horizontally within the conveying pipe 6. In other embodiments, the power source 11 can also be a cylinder, lead screw, or other device capable of driving the baffle 7 to move linearly.

[0031] Reference Figure 2 and Figure 3 A rotating roller 12 is rotatably mounted in the liquid tank 4. The rotating roller 12 has a cylindrical structure and its two sides abut against the inner wall of the liquid tank 4. Its two ends are installed on the two opposite side walls of the liquid tank 4 by rotational sealing. The outer wall of the rotating roller 12 has multiple liquid-receiving grooves 13, which are evenly spaced along the axial direction of the rotating roller 12. In this embodiment, there are ten liquid-receiving grooves 13, each with an equal volume. The rotating roller 12 divides the liquid tank 4 into an upper cavity 41 and a lower cavity 42. The upper cavity 41 is used to receive the condensate flowing in from the feed inlet 10, and the lower cavity 42 is connected to the conveying pipe 6. The upper end of the baffle 7 extends into the lower cavity 42 and abuts against the side wall of the rotating roller 12. The upper end of the baffle 7 is arc-shaped, matching the arc of the outer wall of the rotating roller 12, to ensure good contact between the baffle 7 and the rotating roller 12.

[0032] The outer wall of the liquid tank 4 is equipped with a drive component 14 for driving the rotating roller 12 to rotate. In this embodiment, the drive component 14 is a stepper motor. The output shaft of the stepper motor is fixedly connected to one end of the rotating roller 12 through a coupling, which can precisely control the rotation angle and rotation speed of the rotating roller 12. When the rotating roller 12 rotates, when the liquid receiving tank 13 is located in the upper cavity 41, the condensate enters the liquid receiving tank 13. When the liquid receiving tank 13 rotates to the lower cavity 42, the condensate flows downward into the conveying pipe 6. An annular connecting seat 29 is provided at the end of the rotating roller 12 away from the drive component 14. One end of the rotating roller 12 is rotatably and sealed to the side wall of the liquid tank 4 through the connecting seat 29.

[0033] Furthermore, refer to Figure 2 and Figure 4To facilitate control of the reflux ratio, an adjustment component 15 is installed inside the rotating roller 12. The adjustment component 15 can close the two liquid receiving tanks 13 near the end of the rotating roller 12 or adjust their capacity. The inner walls of the two liquid receiving tanks 13 near the end of the rotating roller 12 away from the drive member 14 are each provided with a capacity-increasing groove 19, which extends circumferentially along the rotating roller 12. The adjustment component 15 is located within the capacity-increasing groove 19. Preferably, the volume of the capacity-increasing groove 19 is the same as the volume of the liquid receiving tank 13, meaning that the adjustment component 15 can close the liquid receiving tank 13 or double its volume. For example, when the reflux ratio is controlled at 3:1, the last two liquid receiving tanks 13 are closed, and then the baffle 7 is adjusted between the 6th and 7th liquid receiving tanks 13; when the reflux ratio is controlled at 4.5:1, the volume of the last liquid receiving tank 13 is doubled, and the baffle 7 is moved between the 9th and 10th liquid receiving tanks 13, so that the capacity ratio on both sides of the baffle 7 is 9:2.

[0034] Specifically, refer to Figure 4 and Figure 5 A mounting groove 16 is provided at the end of the rotating roller 12 away from the driving member 14. The mounting groove 16 extends axially along the rotating roller 12 and is connected to the inner cavity of the connecting seat 29. A mounting cylinder 17 is installed in the mounting groove 16. The mounting cylinder 17 includes a positioning cylinder 171, a first cylinder 172, and a second cylinder 173. The positioning cylinder 171 is fixedly installed in the end of the mounting groove 16 away from the connecting seat 29, and the outer wall of the positioning cylinder 171 is tightly fitted with the inner wall of the mounting groove 16. The first cylinder 172 is rotatably installed at one end of the positioning cylinder 171 by means of bearings or ring-groove engagement, and the second cylinder 173 is rotatably installed at the end of the first cylinder 172 away from the positioning cylinder 171. An operating member 18 is also installed on the mounting cylinder 17 for driving the first cylinder 172 or the second cylinder 173 to rotate. Two liquid-receiving grooves 13 near the opening of the mounting groove 16 are connected to the mounting groove 16, and these two liquid-receiving grooves 13 correspond to the positions of the first cylinder 172 and the second cylinder 173, respectively.

[0035] Reference Figure 4 and Figure 5The adjusting assembly 15 includes an adjusting plate 151 disposed on the sidewalls of the first cylinder 172 and the second cylinder 173. The adjusting plate 151 extends radially outward and into the expansion tank 19, with its sidewall abutting against the inner wall of the expansion tank 19. A closing plate 152 is disposed at the end of the adjusting plate 151 away from the mounting groove 16. When the first cylinder 172 or the second cylinder 173 rotates, it drives the adjusting plate 151 to move in the expansion tank 19, thereby changing the effective volume of the liquid receiving tank 13. When the adjusting plate 151 moves to abut against the inner wall of the liquid receiving tank 13 and the closing plate 152 completely closes the opening of the liquid receiving tank 13, the liquid receiving tank 13 is closed and no longer receives liquid. A receiving groove 20 is also provided on the inner wall of the expansion tank 19. When the adjusting plate 151 moves into the expansion tank 19, the closing plate 152 can be slidably inserted into the receiving groove 20, preventing the closing plate 152 from occupying the space of the liquid receiving tank 13.

[0036] Reference Figure 4 and Figure 5 A first positioning element 21 for limiting the rotation of the first cylinder 172 is provided between the first cylinder 172 and the positioning cylinder 171, and a second positioning element 22 for limiting the rotation of the second cylinder 173 is provided between the first cylinder 172 and the second cylinder 173. The operating element 18 includes a first operating rod 181 that slides through the end face of the second cylinder 173 and a second operating rod 182 that slides through the first operating rod 181. The first operating rod 181 and the second operating rod 182 extend out of the connecting seat 29 and out of the outer wall of the liquid tank 4. Sliding the first operating rod 181 releases the limiting effect of the second positioning element 22 on the second cylinder 173, and rotating the first operating rod 181 drives the second cylinder 173 to rotate; sliding the second operating rod 182 releases the limiting effect of the first positioning element 21 on the first cylinder 172, and rotating the second operating rod 182 drives the first cylinder 172 to rotate. There is also a certain amount of friction between the first cylinder 172, the second cylinder 173, and the inner wall of the mounting groove 16, so that the rotation can be driven by the operating element 18.

[0037] Specifically, the first positioning element 21 includes a first positioning plate 212 slidably disposed in the positioning cylinder 171 and a first elastic element 211 disposed between the positioning cylinder 171 and the positioning plate. The first elastic element 211 is a spring connected between the end face of the positioning cylinder 171 and the first positioning plate 212. A guide block and guide groove structure is provided between the first positioning plate 212 and the positioning cylinder 171, so that the first positioning plate 212 cannot rotate in the positioning cylinder 171. A first annular protrusion 23 is provided on the inner wall of the first cylinder 172. Positioning teeth are provided on the side of the first positioning plate 212 facing the first annular protrusion 23, and the positioning teeth are distributed circumferentially along the first positioning plate 212 to improve friction. The first elastic element 211 drives the first positioning plate 212 to move towards the first annular protrusion 23, so that the positioning strip abuts against the first annular protrusion 23, and the first cylinder 172 is restricted from rotating relative to the positioning cylinder 171 by friction. The surface of the first annular protrusion 23 may be provided with a tooth-like structure to improve the positioning effect of the first positioning plate 212 on the first cylinder 172.

[0038] The inner wall of the second cylinder 173 is provided with a second annular protrusion 24. The second positioning member 22 includes a second elastic member 221 disposed on the inner wall of the first cylinder 172 and a second positioning plate 222 slidably disposed within the first cylinder 172. A guide structure restricting the rotation of the second positioning plate 222 and the first cylinder 172 is also provided. The second elastic member 221 is a spring that drives the second positioning plate 222 to move towards the second annular protrusion 24, so that the second positioning plate 222 abuts against the second annular protrusion 24, and the rotation of the second cylinder 173 relative to the first cylinder 172 is restricted by friction. The second annular protrusion 24 is also provided with a rough structure to improve the stability of positioning. To facilitate the installation of the second elastic member 221, a protrusion can be provided on the inner wall of the first cylinder 172 for the second elastic member 221 to abut against.

[0039] When the second cylinder 173 needs to be rotated, the first operating lever 181 is slid inward. One end of the first operating lever 181 abuts against the second positioning plate 222 and pushes the second positioning plate 222 to overcome the elastic force of the second elastic member 221, causing the second positioning plate 222 to separate from the second annular protrusion 24, thereby releasing the restriction on the second cylinder 173. The side wall of the first operating lever 181 is provided with a protrusion, so that rotating the first operating lever 181 can drive the second cylinder 173 to rotate, thereby driving the corresponding adjusting plate 151 to move. The first operating lever 181 is fixed to the outer wall inside the second cylinder 173 with a mounting plate. A reset member 25 is provided between the mounting plate and the end face of the second cylinder 173. In this embodiment, the reset member 25 is a spring. After the operation is released, the first operating lever 181 is automatically reset, so that the second positioning plate 222 abuts against the second annular protrusion 24 again under the action of the second elastic member 221.

[0040] Reference Figure 4 and Figure 5One end of the second operating lever 182 slides through the second positioning plate 222 and extends into the first cylinder 172. A clamping plate 26 is provided on the outer wall of the second operating lever 182. When the second operating lever 182 slides, its end abuts against the first positioning plate 212 and pushes the first positioning plate 212 to overcome the elastic force of the first elastic element 211, causing the first positioning plate 212 to separate from the first annular protrusion 23, thereby releasing the restriction on the first cylinder 172. Simultaneously, the clamping plate 26 moves with the second operating lever 182 and abuts against the first annular protrusion 23. The clamping plate 26 also has a rough structure, ensuring that the second operating lever 182 and the first cylinder 172 are circumferentially fixed. Rotating the second operating lever 182 at this time will synchronously drive the first cylinder 172 to rotate. A locking rod 28 is provided on the side wall of the first operating lever 181. The locking rod 28 is used to restrict the sliding of the second operating lever 182 and prevent accidental operation.

[0041] When it is necessary to rotate the first cylinder 172 without rotating the second cylinder 173, the first operating lever 181 releases the positioning of the second positioning member 22 on the second cylinder 173, and then the second operating lever 182 releases the positioning of the first positioning member 21 on the first cylinder 172, causing the abutment plate 26 to press against the first annular protrusion 23. Then, hold the first operating lever 181 and rotate the second operating lever 182. Furthermore, a scale can be drawn on the outer wall of the liquid tank 4, and indicator strips can be set on the outer walls of the first operating lever 181 and the second operating lever 182 to better control the relationship between the rotation angle and volume change. Furthermore, a locking rod 28 is provided through the outer wall of the first operating lever 181. The locking rod 28 is a pin that can be inserted into the second operating lever 182, thereby restricting the sliding of the second operating lever 182. When it is necessary to slide the second operating lever 182, the locking rod 28 can be pulled out.

[0042] Reference Figure 2 The inner wall of the upper cavity 41 is provided with an extension plate 27. Two extension plates 27 are symmetrically arranged. The extension plates 27 are arc-shaped and fit against the side wall of the rotating roller 12, and their inner arc surface fits against the outer wall of the rotating roller 12. When the rotating roller 12 rotates, the extension plates 27 can cover the opening of the receiving groove to prevent the liquid from overflowing prematurely during the rotation process, and ensure that each liquid receiving groove 13 is fully filled with liquid when it rotates to the bottom of the upper cavity 41.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An apparatus for purifying multi-component mixed amines, characterized in that: The system includes a distillation column (1), a condenser (2), and a reflux ratio controller (3). The reflux ratio controller (3) includes a liquid tank (4), a conveying pipe (6) connected to the lower end of the liquid tank (4), and a baffle (7) slidably installed in the conveying pipe (6). One end of the conveying pipe (6) is a reflux port (8), and the other end is a sampling port (9). The upper end of the liquid tank (4) is provided with a feed port (10). The outer wall of the conveying pipe (6) is equipped with a power source (11) for driving the baffle (7) to slide. A rotating roller (12) is rotatably installed in the liquid tank (4). The outer wall of the rotating roller (12) has multiple openings. Liquid receiving tanks (13) are spaced apart along the axis of the rotating roller (12). The rotating roller (12) divides the liquid tank (4) into an upper cavity (41) and a lower cavity (42). The upper end of the baffle (7) extends into the lower cavity (42) and abuts against the side wall of the rotating roller (12). A drive member (14) for driving the rotating roller (12) to rotate is installed on the outer wall of the liquid tank (4). An adjustment component (15) is installed inside the rotating roller (12). The adjustment component (15) can close the capacity of the two liquid receiving tanks (13) near the end of the rotating roller (12) or adjust their capacity.

2. The apparatus for purifying multi-component mixed amines according to claim 1, characterized in that: One end of the rotating roller (12) is provided with a mounting groove (16), and a mounting cylinder (17) is installed in the mounting groove (16). An operating element (18) is installed on the mounting cylinder (17). The mounting cylinder (17) includes a positioning cylinder (171) installed in the mounting groove (16), a first cylinder (172) rotatably connected to the positioning cylinder (171), and a second cylinder (173) rotatably connected to the first cylinder (172). The operating element (18) is used to drive the first cylinder (172) or the second cylinder (173) to rotate. 16) The two receiving grooves with openings are connected to the mounting groove (16) and correspond to the first cylinder (172) and the second cylinder (173) respectively. The inner wall of the liquid receiving groove (13) is provided with a capacity expansion groove (19). The adjustment component (15) includes an adjustment plate (151) disposed on the side wall of the first cylinder (172) and the second cylinder (173). The adjustment plate (151) extends into the capacity expansion groove (19). A closing plate (152) is provided at the end of the adjustment plate (151) away from the mounting groove (16). The closing plate (152) can be used to close the receiving groove.

3. The apparatus for purifying multi-component mixed amines according to claim 2, characterized in that: The inner wall of the expansion groove (19) is provided with a receiving groove (20), and the sealing plate (152) can be slidably inserted into the receiving groove (20).

4. The apparatus for purifying multi-component mixed amines according to claim 3, characterized in that: A first positioning member (21) for limiting the rotation of the first cylinder (172) is provided between the first cylinder (172) and the positioning cylinder (171), and a second positioning member (22) for limiting the rotation of the second cylinder (173) is provided between the first cylinder (172) and the second cylinder (173). The operating member (18) includes a first operating rod (181) that slides through the end face of the second cylinder (173) and a second operating rod (182) that slides through the first operating rod (181). Sliding the first operating rod (181) can release the limiting effect of the second positioning member (22) on the second cylinder (173), and rotating the first operating rod (181) can drive the second cylinder (173) to rotate. Sliding the second operating rod (182) can release the limiting effect of the first positioning member (21) on the first cylinder (172), and rotating the second operating rod (182) can drive the first cylinder (172) to rotate.

5. The apparatus for purifying multi-component mixed amines according to claim 4, characterized in that: The first positioning member (21) includes a first positioning plate (212) slidably disposed in the positioning cylinder (171) and a first elastic member (211) disposed between the positioning cylinder (171) and the first positioning plate (212). The inner wall of the first cylinder (172) is provided with a first annular protrusion (23). The first elastic member (211) drives the first positioning plate (212) to abut against the first annular protrusion (23) to restrict the rotation of the first cylinder (172). The inner wall of the second cylinder (173) is provided with a second annular protrusion (24). The second positioning member (22) The first cylinder (173) includes a second elastic member (221) disposed on the inner wall of the first cylinder (172) and a second positioning plate (222) slidably disposed in the first cylinder (172). The second elastic member (221) drives the second positioning plate (222) to press against the second annular protrusion (24) to restrict the rotation of the second cylinder (173). The first operating rod (181) can slide to drive the second positioning plate (222) and the second annular protrusion (24) to separate. The second operating rod (182) can slide to drive the first positioning plate (212) and the first annular protrusion (23) to separate.

6. The apparatus for purifying multi-component mixed amines according to claim 5, characterized in that: When the first operation is slidable, one end of the first operating rod (181) abuts against the second positioning plate (222) and pushes the second positioning plate (222) and the second annular protrusion (24) to separate, and a reset member (25) is provided between the end face of the first operating rod (181) and the second cylinder (173).

7. The apparatus for purifying multi-component mixed amines according to claim 6, characterized in that: One end of the second operating lever (182) slides through the second positioning plate (222) and extends into the first cylinder (172). The outer wall of the second operating lever (182) is provided with a pressing plate (26). When the second operating lever (182) slides, one end abuts against the first positioning plate (212) and pushes the first positioning plate (212) and the first annular protrusion (23) to separate. The pressing plate (26) can press against the first annular protrusion (23) so that the rotation of the second operating lever (182) synchronously drives the first cylinder (172) to rotate.

8. The apparatus for purifying multi-component mixed amines according to claim 5, characterized in that: The liquid receiving tank (13) is provided with ten intervals along the axial direction of the rotating roller (12), and the maximum volume of the expansion tank (19) is the same as the volume of the liquid receiving tank (13).

9. The apparatus for purifying multi-component mixed amines according to claim 8, characterized in that: The inner wall of the upper cavity (41) is provided with an extension plate (27). The extension plate (27) is arc-shaped and fits against the side wall of the rotating roller (12). When the rotating roller (12) rotates, the extension plate (27) can cover the receiving groove.

10. The apparatus for purifying a multi-component mixed amine according to claim 9, characterized in that: The first operating lever (181) has a locking lever (28) on its side wall, which is used to restrict the sliding of the second operating lever (182).

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