An integrated separation device for continuous extraction and distillation of α-olefins

Abstract

This invention relates to the technical field of olefin extraction and distillation separation devices, and discloses an integrated continuous extraction-distillation separation device for α-olefins. The device includes an extraction distillation column, with a connecting pipe connected to the top surface of the column. One end of the connecting pipe is connected to a recovery chamber. A hollow disk is provided inside the extraction distillation column, and an opening / closing disc is movably installed inside the hollow disk, with both sides of the opening / closing disc tightly fitted to the inner wall of the hollow disk. A first opening and a second opening are respectively formed on the surface of the opening / closing disc and the hollow disk. Sliding sleeves are fixedly connected to both sides of the hollow disk. By setting a hollow disk and an opening / closing disc inside the extraction distillation column, the upper and lower spaces of the hollow disk can be sealed and isolated, allowing the raffinate layer on the upper layer of the hollow disk to be adsorbed and discharged. This enables subsequent distillation of the remaining extract phase, eliminating the need for segmented operations and enhancing the efficiency and continuity of the extraction process.

Description

Technical Field

[0001] This invention relates to the field of olefin extraction and distillation separation equipment, specifically an integrated α-olefin continuous extraction-distillation separation device. Background Technology

[0002] Continuous extraction-distillation of α-olefins is a process technology for separating mixtures of α-olefins. It typically involves an extractive distillation column and a solvent recovery column. The extractant alters the relative volatility of the components in the feed liquid to purify and separate the olefins. This process is mainly used in coal-to-oil and petrochemical industries, and can separate high-purity α-olefins from feedstocks such as Fischer-Tropsch synthetic oils. The separated α-olefins can be used as polyolefin comonomers in the production of high-density polyethylene, and can also be used to manufacture surfactants, synthetic lubricants, plasticizers, and other chemical products.

[0003] When olefin-containing feedstocks are extracted, the extract phase has a higher density than the raffinate phase, causing the extract phase to settle at the bottom of the raffinate phase. The raffinate phase is usually composed of light components such as alkanes and isoolefins. In the subsequent distillation process, the raffinate phase needs to be discharged to ensure the purity of the separation. However, traditional extraction devices usually introduce the extracted material into the interior of a distillation column for further distillation, which increases the number of steps in the process and reduces the continuity of the separation operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated α-olefin continuous extraction-distillation separation device, which solves the problem that existing equipment still requires the discharge of extracted materials, thus affecting processing efficiency and reducing processing continuity.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated α-olefin continuous extraction-distillation separation device, comprising an extractive distillation column, a connecting pipe connected to the top surface of the extractive distillation column, a recovery chamber connected to one end of the connecting pipe, a hollow disk inside the extractive distillation column, an opening and closing disc movably installed inside the hollow disk, with both sides of the opening and closing disc tightly fitted to the inner wall of the hollow disk, a first opening and a second opening respectively formed on the surfaces of the opening and closing disc and the hollow disk, a sliding sleeve fixedly connected to both sides of the hollow disk, an inner rod movably installed inside the sliding sleeve, an outer cylinder sleeved at both ends of the inner rod, a rotating assembly connected to one end of the outer cylinder, a scraper provided at the top of the hollow disk, a stirring rod fixedly connected to the outer surface of the outer cylinder, and an electric heating tube inside the extractive distillation column.

[0006] Through the above-mentioned technical means: when the opening and closing disc rotates inside the hollow disc, the relative positions of the first and second openings can be adjusted. When the first and second openings are staggered, the upper and lower spaces of the hollow disc can be isolated. When the first and second openings are aligned, the extractant can fall. After extraction is completed, the hollow disc can be moved down between the extract phase and the raffinate phase. Through the isolation of the upper and lower spaces of the hollow disc, the upper raffinate phase can be easily extracted, thereby enhancing the purity of the subsequent material distillation. Moreover, the integrated design reflects the continuity of material processing.

[0007] Preferably, the rotating assembly includes a first worm gear and a connecting worm. The first worm gear is fixedly installed at one end of the outer cylinder, and the connecting worm is disposed on one side of the first worm gear, with the first worm gear meshing with the connecting worm.

[0008] Preferably, a first motor is fixedly mounted on the outer surface of the extraction distillation column by a fixing frame, and the output end of the first motor is connected to a connecting worm gear.

[0009] Preferably, a pump is installed at the top of the extractive distillation column, a hollow pipe is connected to the bottom of the pump, a corrugated pipe is fixedly connected to the bottom end of the hollow pipe, the corrugated pipe extends into the interior of the outer cylinder, and the extended end of the corrugated pipe is connected to the inner rod, and a drain pipe is connected to one side of the pump.

[0010] Preferably, the outer surface of the inner rod is provided with a suction hole, and the suction hole is connected to the hollow tube.

[0011] Preferably, the inner walls of the two outer cylinders are symmetrically provided with snap-fit ​​grooves, and snap-fit ​​blocks are movably installed inside the snap-fit ​​grooves, and the snap-fit ​​blocks are fixedly connected to the extension end of the inner rod.

[0012] Preferably, the outer surface of the inner rod is symmetrically connected with a rotating rod, the bottom of the rotating rod is fixedly connected with a scraper, and the scraper is in contact with the top surface of the hollow disc. The outer side of the extraction distillation column is provided with a feed inlet, and a filter plate is fixedly installed inside the feed inlet by bolts.

[0013] Preferably, the inner wall of the hollow disk is provided with an annular groove, and a sliding ring is fixedly connected to the outer surface of the opening and closing disk, with the sliding ring placed inside the annular groove.

[0014] Preferably, a movable block is fixedly connected to the inner side of the hollow disk, and two screws are inserted inside the two movable blocks. A connecting rod is fixedly connected to the bottom end of the two screws, and a second worm gear is fixedly connected to the bottom end of the two connecting rods. A double-segment worm is meshed with one side of the two second worm gears.

[0015] Preferably, a second motor is fixedly installed on the outer surface of the extraction distillation column by a fixing frame, and the output end of the second motor is connected to a double-section worm gear. The inner wall of the extraction distillation column is provided with a lifting groove, and a moving block is movably installed inside the lifting groove.

[0016] Working principle: When in use, raw materials can be added into the interior of the extractive distillation column through the feed inlet. During this process, the first and second openings are aligned, and the raw materials can enter the bottom space of the hollow plate through the first and second openings. By adding extractant into the interior of the extractive distillation column, the extractant comes into contact with the raw materials in the extractive distillation column, and the raw materials can be extracted.

[0017] During the extraction process, the first motor is turned on, which drives the connecting worm to rotate. The connecting worm drives the first worm wheel to rotate, which in turn drives the outer cylinder to rotate. The outer cylinder drives the opening and closing disc to rotate inside the hollow disc, thereby allowing the first and second openings to continuously stagger and overlap, thus controlling the opening and closing state of the upper and lower parts of the hollow disc, and allowing the extractant to flow into the bottom of the hollow disc in segments to contact the raw material.

[0018] Furthermore, when the inner rod rotates, it can drive the scraper to rotate around the top surface of the hollow disk, thereby scraping off the extractant adhering to the top surface of the hollow disk, which facilitates the feeding of the extractant. At the same time, when the inner rod rotates, it can also drive the stirring rod to rotate, which can stir the extractant and the raw material, increasing the contact area between the two phases and accelerating the extraction rate.

[0019] When extraction is complete, the extract phase and raffinate phase will separate into layers. The second motor is then activated, driving a double-stage worm gear to rotate. This worm gear, in turn, drives two second worm wheels, which in turn drive a connecting rod. The connecting rod, in turn, drives a screw, which in turn drives a moving block. This moving block then moves the hollow disc up and down within the extractive distillation column, positioning the column between the layers of extract and raffinate phases. This separates the extract and raffinate phases and staggers the first and second openings, thus sealing the upper and lower spaces of the hollow disc. The pump is then activated, drawing the raffinate phase from the inside of the suction port and discharging it to the outside, thereby ensuring the purity of the extracted feed.

[0020] This invention provides an integrated separation device for continuous extraction and distillation of α-olefins. It has the following advantages:

[0021] 1. This invention incorporates a hollow disk and an open / closed disk inside the extractive distillation column. After the olefin feedstock extraction is complete, the hollow disk can be lowered to the separation layer between the extract phase and the raffinate phase. By rotating the assembly, the open / closed disk can be controlled to rotate inside the hollow disk, thereby achieving a sealed isolation between the upper and lower spaces of the hollow disk. At this point, the raffinate layer on the upper layer of the hollow disk can be adsorbed and discharged, allowing for subsequent distillation of the remaining extract phase. This process eliminates the need for segmented operations, enhancing the efficiency and continuity of the extraction process.

[0022] 2. The present invention provides a stirring rod on the outside of the inner rod. When the inner rod rotates, it drives the stirring rod to rotate, thereby increasing the contact area between the two phases, reducing the mass transfer time, and thus enhancing the extraction efficiency.

[0023] 3. In this invention, a rotating rod and a scraper are provided on the outside of the inner rod. When the inner rod rotates, the rotating rod can drive the scraper to rotate around the top of the hollow disk, thereby scraping off the remaining extractant at the top of the hollow disk and facilitating the falling of the extractant.

[0024] 4. In this invention, when the opening and closing ring rotates inside the hollow disk, the intermittent opening and closing of the upper and lower spaces of the hollow disk can be controlled. This allows the extractant placed at the upper part of the hollow disk to fall intermittently and quantitatively into the raw material at the bottom of the hollow disk. The segmented addition of the extractant can make the mass transfer between the extractant and the raw material more uniform, thereby enhancing the extraction effect. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the hollow disk of the present invention;

[0028] Figure 4 This is a schematic diagram of the hollow disk of the present invention;

[0029] Figure 5 This is a schematic diagram of the rotating component of the present invention;

[0030] Figure 6 This is a schematic diagram of the inner rod of the present invention;

[0031] Figure 7 This is a partially enlarged schematic diagram of point A in the present invention;

[0032] Figure 8 This is a schematic diagram of the bellows of the present invention;

[0033] Figure 9 This is a schematic diagram of the two-segment worm gear of the present invention.

[0034] The components include: 1. Extractive distillation column; 2. Recovery chamber; 3. Connecting pipe; 4. Feed inlet; 5. Filter plate; 6. First motor; 7. Second motor; 8. Pump; 9. Drain pipe; 10. Lifting tank; 11. Hollow disc; 12. Outer cylinder; 13. Inner rod; 14. Opening / closing disc; 15. Stirring rod; 16. Sliding sleeve; 17. Moving block; 18. Rotating rod; 19. Scraper; 20. Sliding ring; 21. First worm gear; 22. Connecting worm; 23. Screw; 24. Connecting rod; 25. Second worm gear; 26. Double-stage worm; 27. Annular groove; 28. Snap-fit ​​block; 29. ​​Snap-fit ​​groove; 30. First opening; 31. Second opening; 32. Suction hole; 33. Hollow pipe; 34. Corrugated pipe; 35. Electric heating element. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 9 This invention provides an integrated α-olefin continuous extraction-distillation separation device, including an extractive distillation column 1. A connecting pipe 3 is connected to the top surface of the extractive distillation column 1, and a recovery chamber 2 is connected to one end of the connecting pipe 3. A hollow disk 11 is provided inside the extractive distillation column 1. An opening and closing disk 14 is movably installed inside the hollow disk 11, and the two sides of the opening and closing disk 14 are tightly fitted to the inner wall of the hollow disk 11. A first opening 30 and a second opening 31 are respectively opened on the surface of the opening and closing disk 14 and the hollow disk 11. A sliding sleeve 16 is fixedly connected to both sides of the hollow disk 11. An inner rod 13 is movably installed inside the sliding sleeve 16. An outer cylinder 12 is sleeved at both ends of the inner rod 13. A rotating component is connected to one end of the outer cylinder 12. A scraper is provided on the top of the hollow disk 11. A stirring rod 15 is fixedly connected to the outer surface of the outer cylinder 12. An electric heating tube 35 is provided inside the extractive distillation column 1.

[0037] Specifically, the opening and closing disc 14 is movably installed inside the hollow disc 11, allowing it to rotate within the disc. The upper and lower sides of the opening and closing disc 14 are tightly fitted against the inner wall of the hollow disc 11. When the opening and closing disc 14 rotates to a certain position, aligning the first opening 30 and the second opening 31, the interior of the extractive distillation column 1 is connected, facilitating the fall of the extractant and its contact with the olefin-containing material. As the opening and closing disc 14 continues to rotate, and the positions of the first opening 30 and the second opening 31 are staggered, the upper and lower spaces of the hollow disc 11 are isolated. Upon completion of extraction, the hollow disc 11 can be lowered between the extractant phase and the raffinate phase, placing the raffinate phase at the top of the hollow disc 11 and the extractant phase at the bottom. The closed seal of the upper and lower spaces of the hollow disc 11 facilitates the extraction of the upper raffinate phase. The cleaning process increases the precision of subsequent distillation of the olefin-containing feedstock after extraction. Sliding sleeves 16 are fixedly installed on the upper and lower sides of the hollow disk 11, and the inner rod 13 passes through the sliding sleeves 16 and is fixedly connected to the opening and closing disc 14 inside the hollow disk 11. When the inner rod 13 rotates, it drives the opening and closing disc 14 to rotate inside the hollow disk 11. Furthermore, when the inner rod 13 rotates, it drives the stirring rod 15 to rotate at the bottom of the hollow disk 11. When the stirring rod 15 rotates, it increases the contact area between the olefin feedstock and the extractant, thereby enhancing the reaction effect, reducing the mass transfer time of extraction, and enhancing the functionality during use. The extraction distillation column 1 of this equipment also has a distillation function. The temperature inside the column can be heated by the electric heating tube 35, which can then heat the extracted feedstock. Since distillation columns are widely used in various fields, the structure and principle of the distillation column will not be described in detail here.

[0038] Please see the appendix Figure 1 and attached Figure 5 The rotating assembly includes a first worm gear 21 and a connecting worm 22. The first worm gear 21 is fixedly installed at one end of the outer cylinder 12, and the connecting worm 22 is located on one side of the first worm gear 21. The first worm gear 21 and the connecting worm 22 are meshed together. The outer surface of the extraction distillation column 1 is fixedly installed with a first motor 6 by a fixing bracket, and the output end of the first motor 6 is connected to the connecting worm 22.

[0039] Specifically, through the reduction transmission connecting the worm 22 and the first worm wheel 21, the outer cylinder 12 can be driven to rotate at a reduced speed. The outer cylinder 12 can drive the inner rod 13 to rotate at a reduced speed, thereby limiting the rotation speed of the stirring rod 15 and preventing the stirring rod 15 from rotating too fast and causing emulsification during the extraction process.

[0040] Please see the appendix Figure 1 and attached Figure 8A pump 8 is installed at the top of the extraction distillation column 1. A hollow tube 33 is connected to the bottom of the pump 8. A corrugated tube 34 is fixedly connected to the bottom end of the hollow tube 33. The corrugated tube 34 extends into the interior of the outer cylinder 12. The extended end of the corrugated tube 34 is connected to the inner rod 13. A drain pipe 9 is connected to one side of the pump 8. A suction hole 32 is opened through the outer surface of the inner rod 13 and is connected to the hollow tube 33.

[0041] Specifically, the extraction end of the pump 8 is connected to the hollow tube 33. The hollow tube 33 is hollow inside, and a corrugated tube 34 is connected to the bottom end of the hollow tube 33. The corrugated tube 34 is made of plastic and is telescopic. When the inner rod 13 extends or retracts inside the outer cylinder 12, it can pull the corrugated tube 34 to extend. When the hollow disk 11 is placed between the extract phase and the raffinate phase, and the upper and lower spaces are isolated, the pump 8 can be turned on. The pump 8 can transmit the suction force to the suction port 32. Through the suction port 32, the raffinate phase at the top of the hollow disk 11 can be extracted into the inner rod 13, and then the inner rod... The 13 phase is adsorbed into the interior of the bellows 34 and finally extracted into the pump 8 through the hollow tube 33 to facilitate the discharge of the raffinate phase and ensure the purity of the extract phase. At the same time, a hole is opened in the center of the first worm gear 21, and one end of the hollow tube 33 extends into the hole in the center of the first worm gear 21 and is fixedly connected to it. The other end of the hollow tube 33 is rotatably connected to the pump 8 through a bearing. Therefore, when the first worm gear 21 rotates, it can drive the hollow tube 33 to rotate at the extraction end of the pump 8, preventing the hollow tube 33 from getting stuck when the first worm gear 21 rotates.

[0042] Please see the appendix Figure 6 and attached Figure 7 The inner walls of the two outer cylinders 12 are symmetrically provided with snap-fit ​​grooves 29. Snap-fit ​​blocks 28 are movably installed inside the snap-fit ​​grooves 29 and are fixedly connected to the extension end of the inner rod 13.

[0043] Specifically, the locking block 28 is slidably installed inside the locking groove 29. When the outer cylinder 12 drives the inner rod 13 to rotate, the locking block 28 is limited by the locking groove 29, which can drive the inner rod 13 to rotate synchronously, preventing the outer cylinder 12 from rotating. In the case of sliding inside the outer cylinder 12, the synchronicity of the rotation of the outer cylinder 12 and the inner rod 13 is ensured. At the same time, when the inner rod 13 extends or retracts inside the outer cylinder 12, the locking block 28 can slide inside the locking groove 29, thereby enhancing the directional and stability of the extension and retraction of the inner rod 13.

[0044] Please see the appendix Figure 1 and attached Figure 5The outer surface of the inner rod 13 is symmetrically connected with a rotating rod 18. The bottom of the rotating rod 18 is fixedly connected with a scraper 19, and the scraper 19 is in contact with the top surface of the hollow disk 11. The outer side of the extraction distillation column 1 is provided with a feed inlet 4, and a filter plate 5 is fixedly installed inside the feed inlet 4 by bolts.

[0045] Specifically, the scraper 19 is placed on the top surface of the hollow disk 11. When the inner rod 13 rotates, it drives the rotating rod 18 to rotate inside the hollow disk 11. The rotating rod 18 simultaneously drives the scraper 19 to rotate on the top surface of the hollow disk 11. During the extraction of olefin-containing raw materials, some extractant may be in a fluid state. When the scraper 19 rotates on the top surface of the hollow disk 11, it can scrape the extractant attached to the top surface of the hollow disk 11, thereby facilitating the fall of the extractant and preventing the extractant from accumulating on the top surface of the hollow disk 11. Through the feed inlet 4, extractant and olefin-containing raw materials can be added into the interior of the extractive distillation column 1. The extractant and raw materials can be filtered through the filter plate 5 to ensure the purity of the extraction.

[0046] Please see the appendix Figure 5 and attached Figure 9 The inner wall of the hollow disk 11 is provided with an annular groove 27, and a sliding ring 20 is fixedly connected to the outer surface of the opening and closing disk 14, and the sliding ring 20 is placed inside the annular groove 27.

[0047] Specifically, the sliding ring 20 is slidably installed inside the annular groove 27. When the opening and closing disc 14 rotates, the sliding ring 20 can slide inside the annular groove 27, thereby increasing the stability and directional accuracy of the opening and closing ring rotation. At the same time, the sliding ring 20, placed on the inner wall of the annular groove 27, can also support the opening and closing ring, enhancing the stability of the opening and closing ring installed inside the hollow ring.

[0048] Please see the appendix Figure 2 and attached Figure 9 The hollow disk 11 is fixedly connected to the inner side of the movable block 17. The two movable blocks 17 are provided with screws 23. The bottom ends of the two screws 23 are fixedly connected to the connecting rods 24. The bottom ends of the two connecting rods 24 are fixedly connected to the second worm gears 25. The two second worm gears 25 are meshed with a double worm gear 26 on one side.

[0049] Specifically, the movable block 17 is connected to the screw 23 by a thread, so when the screw 23 rotates, it can drive the movable block 17 to move on the screw 23. The two movable blocks 17 are fixedly installed on both sides of the hollow disk 11. Therefore, when the two movable blocks 17 move synchronously, they can drive the hollow disk 11 to rise and fall inside the extractive distillation column 1. The double-stage worm gear 26 is meshed with two second worm wheels 25. Therefore, when the double-stage worm gear 26 rotates, it can drive the two second worm wheels 25 to rotate synchronously in the same direction. The two second worm wheels 25 can drive the two screws 23 to rotate synchronously through the two connecting rods 24, thus ensuring the synchronicity of the movement of the two movable blocks 17 and increasing the stability of the lifting and lowering of the hollow disk 11.

[0050] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 9 The outer surface of the extraction distillation column 1 is fixedly mounted with a second motor 7 by a fixing frame, and the output end of the second motor 7 is connected to the double-section worm gear 26. The inner wall of the extraction distillation column 1 is provided with a lifting groove 10, and the moving block 17 is movably installed inside the lifting groove 10.

[0051] Specifically, the movable block 17 is movably installed inside the lifting groove 10, and the movable block 17 is tightly fitted to the inner wall of the lifting groove 10 and slidably connected to it. Therefore, when the screw 23 rotates and drives the movable block 17 to move, the limiting of the lifting groove 10 can prevent the movable block 17 from rotating with the screw 23, thus ensuring the stability and directionality of the movable block 17 when it moves, and at the same time ensuring the stability of the hollow disk 11 lifting.

[0052] This embodiment of the α-olefin continuous extraction-distillation integrated separation device allows the raw material to be added into the extractive distillation column 1 through the feed inlet 4. During this process, the first opening 30 and the second opening 31 are made to overlap, and the raw material can enter the bottom space of the hollow disk 11 through the first opening 30 and the second opening 31. By adding extractant into the extractive distillation column 1, the extractant comes into contact with the raw material in the extractive distillation column 1, and the raw material can be extracted.

[0053] During the extraction process, the first motor 6 is turned on, which drives the connecting worm 22 to rotate. The connecting worm 22 drives the first worm wheel 21 to rotate, which in turn drives the outer cylinder 12 to rotate. The outer cylinder 12 drives the opening and closing disc 14 to rotate inside the hollow disc 11. This allows the first opening 30 and the second opening 31 to continuously stagger and overlap, thereby controlling the opening and closing state of the upper and lower parts of the hollow disc 11. This allows the extractant to flow into the bottom of the hollow disc 11 in segments and contact the raw material.

[0054] Furthermore, when the inner rod 13 rotates, it can drive the scraper 19 to rotate around the top surface of the hollow disk 11 by rotating the rod 18, thereby scraping off the extractant attached to the top surface of the hollow disk 11, which facilitates the feeding of the extractant. At the same time, when the inner rod 13 rotates, it can also drive the stirring rod 15 to rotate, which can stir the extractant and the raw material, increasing the contact area between the two phases and accelerating the extraction rate.

[0055] When extraction is complete, the extract phase and raffinate phase will separate into layers. The second motor 7 is turned on, which drives the double-stage worm gear 26 to rotate. The double-stage worm gear 26 drives the two second worm wheels 25 to rotate. The second worm wheels 25 drive the connecting rod 24 to rotate. The connecting rod 24 drives the screw 23 to rotate. The screw 23 drives the moving block 17 to move. The moving block 17 drives the hollow disk 11 to rise and fall inside the extractive distillation column 1, raising and lowering the extractive distillation column 1 between the layers of the extract phase and raffinate phase, separating the extract phase and raffinate phase, and staggering the first opening 30 and the second opening 31, thereby sealing the upper and lower spaces of the hollow disk 11. The pump 8 is turned on, which can draw the raffinate phase from the inside of the suction hole 32 and discharge it to the outside, thereby ensuring the purity of the raw material extraction. The electric heating tube 35 is turned on, which can heat the temperature inside the extractive distillation column 1, thereby enabling the distillation of the extracted raw material.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated α-olefin continuous extraction-distillation separation device, comprising an extractive distillation column (1), characterized in that: The top surface of the extractive distillation column (1) is connected to a connecting pipe (3), one end of which is connected to a recovery chamber (2). The interior of the extractive distillation column (1) is provided with a hollow disk (11), and an opening and closing disk (14) is movably installed inside the hollow disk (11). The two sides of the opening and closing disk (14) are tightly fitted to the inner wall of the hollow disk (11). The surfaces of the opening and closing disk (14) and the hollow disk (11) are respectively provided with a first opening (30) and a second opening. Hole (31), the hollow disk (11) is fixedly connected to two sides of a sliding sleeve (16), an inner rod (13) is movably installed inside the sliding sleeve (16), an outer cylinder (12) is sleeved at both ends of the inner rod (13), a rotating component is connected to one end of the outer cylinder (12), a scraper is provided on the top of the hollow disk (11), a stirring rod (15) is fixedly connected to the outer surface of the outer cylinder (12), and an electric heating tube (35) is provided inside the extractive distillation column (1). The top of the extractive distillation column (1) is equipped with a pump (8), the bottom of the pump (8) is connected to a hollow tube (33), the bottom end of the hollow tube (33) is fixedly connected to a bellows (34), and the bellows (34) extends into the interior of the outer cylinder (12), and the extended end of the bellows (34) is connected to the inner rod (13). A drain pipe (9) is connected to one side of the pump (8). The outer surface of the inner rod (13) is provided with a suction hole (32), and the suction hole (32) is connected to the hollow tube (33). The hollow disk (11) is fixedly connected to a movable block (17), and two movable blocks (17) are provided with screws (23) inside. The bottom ends of the two screws (23) are fixedly connected to a connecting rod (24), and the bottom ends of the two connecting rods (24) are fixedly connected to a second worm gear (25). A double-segment worm gear (26) is meshed with one side of the two second worm gears (25). The outer surface of the extraction distillation column (1) is fixedly mounted with a second motor (7) by a fixing frame, and the output end of the second motor (7) is connected to a double-section worm gear (26). The inner wall of the extraction distillation column (1) is provided with a lifting groove (10), and a moving block (17) is movably installed inside the lifting groove (10).

2. The integrated α-olefin continuous extraction-distillation separation device according to claim 1, characterized in that: The rotating assembly includes a first worm gear (21) and a connecting worm (22). The first worm gear (21) is fixedly installed at one end of the outer cylinder (12), and the connecting worm (22) is disposed on one side of the first worm gear (21), and the first worm gear (21) is meshed with the connecting worm (22).

3. The integrated α-olefin continuous extraction-distillation separation device according to claim 2, characterized in that: The outer surface of the extraction distillation column (1) is fixedly mounted with a first motor (6) by a fixing frame, and the output end of the first motor (6) is connected to the connecting worm (22).

4. The integrated α-olefin continuous extraction-distillation separation device according to claim 1, characterized in that: The inner walls of the two outer cylinders (12) are symmetrically provided with snap-fit ​​grooves (29), and snap-fit ​​blocks (28) are movably installed inside the snap-fit ​​grooves (29), and the snap-fit ​​blocks (28) are fixedly connected to the extension end of the inner rod (13).

5. The integrated α-olefin continuous extraction-distillation separation device according to claim 1, characterized in that: The outer surface of the inner rod (13) is symmetrically connected with a rotating rod (18), and a scraper (19) is fixedly connected to the bottom of the rotating rod (18). The scraper (19) is in contact with the top surface of the hollow disk (11). The outer side of the extraction distillation column (1) is provided with a feed inlet (4), and a filter plate (5) is fixedly installed inside the feed inlet (4) by bolts.

6. The integrated α-olefin continuous extraction-distillation separation device according to claim 1, characterized in that: The inner wall of the hollow disk (11) is provided with an annular groove (27), and a sliding ring (20) is fixedly connected to the outer surface of the opening and closing disk (14), and the sliding ring (20) is placed inside the annular groove (27).

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