Rectification and purification device for generating octafluoropropane

Abstract

The invention belongs to the technical field of gas purification equipment, particularly relates to a rectification and purification device for generating octafluoropropane, and aims to solve the problem that an existing rectification and purification device for generating octafluoropropane is poor in alkali washing effect on gas, the rectification and purification device for generating octafluoropropane comprises an alkali washing tank, a gas inlet pipe is arranged outside the alkali washing tank, and a gas outlet pipe is arranged outside the alkali washing tank. Three flow dividing pipes are arranged on the air inlet pipe, the ends, away from the air inlet pipe, of the flow dividing pipes are located in the alkali washing tank, two round holes are formed in the upper side of the alkali washing tank, and an exhaust pipe and an air conveying pipe are arranged in the round holes respectively. According to the rectification purification device for octafluoropropane generation, the alkali washing effect of the device on octafluoropropane gas can be remarkably improved, the gas is diffused in alkali liquor and flows back for secondary alkali washing, and the absorption effect of the alkali liquor on hydrogen fluoride and water in the gas is greatly improved; and the purification efficiency and effect of the device on octafluoropropane are improved.

Description

Technical Field

[0001] This invention relates to the field of gas purification equipment technology, and in particular to a distillation purification apparatus for the generation of octafluoropropane. Background Technology

[0002] Octafluoropropane is an organic compound formed when all eight hydrogen atoms of propane are replaced by fluorine atoms. It is a highly stable, non-flammable, and low-toxicity perfluorocarbon gas. It plays an important role in modern medicine and high-end manufacturing.

[0003] When purifying octafluoropropane, the octafluoropropane gas needs to be alkali-washed first to remove the hydrogen fluoride mixed in with the octafluoropropane gas. However, existing distillation purification devices often simply pass the gas into the alkali solution during alkali washing. This method is often ineffective and cannot completely remove the hydrogen fluoride from the gas, resulting in low purity of the generated octafluoropropane. Summary of the Invention

[0004] This invention discloses a distillation and purification apparatus for the generation of octafluoropropane, which aims to solve the technical problem in the prior art that the existing distillation and purification apparatus for the generation of octafluoropropane has poor effect on alkaline washing of gas.

[0005] This invention proposes a distillation and purification apparatus for the generation of octafluoropropane, comprising an alkaline washing tank. An inlet pipe is provided on the outside of the alkaline washing tank, and three branch pipes are provided on the inlet pipe. The ends of the branch pipes furthest from the inlet pipe are all located inside the alkaline washing tank. Two circular holes are opened on the upper side of the alkaline washing tank, and an exhaust pipe and a gas supply pipe are respectively installed in the circular holes. A diffusion reflux module is provided inside the alkaline washing tank. The diffusion reflux module includes a partitioned isolation plate. The bottom of the partitioned isolation plate is fixedly connected to the inner wall of the bottom of the alkaline washing tank. A communication port is opened at the bottom of the partitioned isolation plate. A reflux pipe is provided on the partitioned isolation plate. Two symmetrical diffusion paddles are provided inside the alkaline washing tank. A ceramic gas stone is fixedly connected to the end of the reflux pipe furthest from the diffusion paddles. An extraction pipe is provided inside the alkaline washing tank. One end of the extraction pipe is connected to the gas supply pipe, and the other end is located on the side of the partitioned isolation plate furthest from the diffusion paddles.

[0006] In a preferred embodiment, the bottom of the alkaline washing tank has a slot, and the three diversion pipes are externally fitted with a common sealing block. The outer side of the sealing block is fixedly connected to the inner wall of the slot. Each of the three diversion pipes is equipped with a booster pump, and the output end of each booster pump is connected to the diversion pipe on the same side via a conduit. A fixing frame is fixedly connected to the inner wall of the alkaline washing tank, and the fixing frame has two symmetrical openings. An isolation cover is fixedly connected to the inner wall of each opening. A motor is fixedly connected to the bottom inner wall of each isolation cover. The output end of each motor is connected to a rotating shaft via a coupling, and the outer side of each rotating shaft is connected to an expansion valve on the same side. The inner wall of the propeller is fixedly connected; a pump is fixedly connected to the side of the partition plate away from the ceramic gas stone, the output end of the pump is connected to the return pipe through a thin pipe, the ceramic gas stone is located above the connecting port, and a pressure stabilizing chamber is fixedly connected to the outside of each of the three branch pipes. A circular groove is opened on the upper side of each pressure stabilizing chamber, and a sealing cover is installed in each circular groove. A sealing ring is installed on the outside of each sealing cover, and the bottom of each sealing ring is fixedly connected to the upper side of the pressure stabilizing chamber on the same side; the upper side of each of the three pressure stabilizing chambers is bolted with a boss, and two symmetrical narrow openings are opened on the boss. The same type of valve is movably connected in the narrow openings. A round rod is fixedly connected to the outside of a protrusion, which is fixedly connected to the side opposite to the sealing cover. A torsion spring is installed on the outside of the round rod. Symmetrical shafts one and two are installed inside each of the receiving cylinders. Three circumferentially equidistant spiral plates are fixedly connected to the outside of shafts one and two. The outside of each spiral plate is fixedly connected to the inner wall of the receiving cylinder. A flow-sealing plate is installed above each receiving cylinder, and multiple circumferentially equidistant guide plates are fixedly connected to the outside of each flow-sealing plate. Two symmetrical connecting frames are fixedly connected to the inner wall of each receiving cylinder, located above shaft one and below shaft two, respectively. On each of the two connecting frames, a protective cover is fixedly connected to one side. A second motor is fixedly connected to the inner wall of each protective cover, and a through hole is opened on each shaft. A rotating rod is movably connected to each through hole. The output end of the upper motor is connected to the upper side of the rotating rod through a coupling. Two dividing paddles are provided in each of the receiving cylinders. The upper side of the upper dividing paddle is fixedly connected to the bottom of the rotating rod, and the lower dividing paddle is connected to the output end of the lower motor through a coupling. The upper side of the upper connecting frame is fixedly connected to the bottom of the sealing plate.

[0007] In a preferred embodiment, each of the three circular rods is provided with an outer ring. Each outer ring is fixedly connected to the opposite side of the outer side of a corresponding boss. A connecting ring is slidably connected to the inner wall of each outer ring. The connecting rings are all located outside the circular rods, and their inner walls are provided with grooves. One end of each torsion spring is fixedly connected to the outside of the circular rod on the same side, and the other end is engaged with the inner wall of the groove on the same side. A toothed plate is fixedly connected to the side of each of the three connecting rings away from the torsion spring. A positioning ring is fixedly connected to the outside of each outer ring. The inner wall of each positioning ring is provided with a toothed groove, and the inner wall of the toothed groove is engaged with the outside of the toothed plate on the same side. The side of the boss closest to the outer ring is fixedly connected to the outer ring. The system connects two symmetrical guide cylinders; each guide cylinder contains a spring, one end of which is fixedly connected to the outside of a boss. The inner walls of two guide cylinders on the same side are slidably connected to the same anti-disengagement buckle. The ends of the springs away from the boss are fixedly connected to the outside of the anti-disengagement buckle on the same side, and the outside of the anti-disengagement buckle is engaged with the outside of a toothed plate on the same side. An electronic valve two is installed outside the exhaust pipe, and an electronic valve one is installed outside the gas supply pipe. A vacuum pump is fixedly connected to the upper side of the alkaline washing tank, and the output end of the vacuum pump is connected to the exhaust pipe through a short pipe. An air pump is fixedly connected to the upper side of the alkaline washing tank, and the output end of the air pump is connected to the outside of the gas supply pipe through a gas guide pipe.

[0008] As can be seen from the above, the distillation purification apparatus for generating octafluoropropane provided by the present invention can significantly improve the alkaline washing effect of the apparatus on octafluoropropane gas. By diffusing the gas in the alkaline solution and refluxing it for secondary alkaline washing, the absorption effect of the alkaline solution on hydrogen fluoride and water in the gas is greatly improved, thereby improving the purification efficiency and effect of the apparatus on octafluoropropane. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the diffusion reflux module structure of the present invention; Figure 4 This is a schematic diagram of the receiving cylinder structure of the present invention; Figure 5 This is a schematic diagram of the boss structure of the present invention; Figure 6 This is a schematic diagram of the structure of shaft one and shaft two of the present invention; Figure 7 This is a schematic diagram of the external ring structure of the present invention; Figure 8 This is a schematic diagram of the limiting groove structure of the present invention.

[0010] In the diagram: 1. Alkali washing tank; 2. Inlet pipe; 3. Diverter pipe; 4. Booster pump; 5. Gas delivery pipe; 6. Electronic valve one; 7. Air pump; 8. Diffusion reflux module; 801. Sealing block; 802. Fixing frame; 803. Isolation cover; 804. Motor one; 805. Rotating shaft; 806. Diffusion paddle; 807. Partition isolation plate; 808. Connecting port; 809. Reflux pipe; 810. Ceramic gas stone; 811. Pump; 812. Pressure stabilizing chamber; 813. Receiving cylinder; 814. Shaft one; 815. Shaft two; 816. Sealing plate; 8 17. Guide plate; 818. Spiral plate; 819. convex seat; 820. Round rod; 821. Sealing cover; 822. Sealing ring; 823. Torsion spring; 824. Connecting frame; 825. Protective cover; 826. Motor II; 827. Dividing paddle I; 828. Rotating rod; 829. Dividing paddle II; 9. Exhaust pipe; 10. Vacuum pump; 11. Electronic valve II; 12. Suction pipe; 13. External ring; 14. Connecting ring; 15. Positioning ring; 16. Limiting groove; 17. Toothed plate; 18. Guide cylinder; 19. Spring; 20. Anti-disengagement buckle. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0012] The octafluoropropane generation distillation purification device disclosed in this invention is mainly applied to scenarios where existing octafluoropropane generation distillation purification devices have poor alkaline washing effects on gases.

[0013] Reference Figures 1-8 A distillation and purification apparatus for generating octafluoropropane includes an alkaline washing tank 1. An inlet pipe 2 is externally installed on the alkaline washing tank 1, and three branch pipes 3 are installed on the inlet pipe 2. The ends of the branch pipes 3 furthest from the inlet pipe 2 are all located inside the alkaline washing tank 1. Two circular holes are opened on the upper side of the alkaline washing tank 1, and an exhaust pipe 9 and a gas supply pipe 5 are respectively installed in the circular holes. A diffusion reflux module 8 is installed inside the alkaline washing tank 1. The diffusion reflux module 8 includes a partition isolation plate 807, the bottom of which is connected to the alkaline washing tank 1. The bottom inner wall is connected by bolts. The bottom of the partition plate 807 has a communication port 808. The partition plate 807 is equipped with a return pipe 809. The alkaline washing tank 1 is equipped with two symmetrical diffusion paddles 806. The end of the return pipe 809 away from the diffusion paddle 806 is connected to a ceramic gas stone 810 by bolts. The alkaline washing tank 1 is equipped with an exhaust pipe 12. One end of the exhaust pipe 12 is connected to the gas supply pipe 5, and the other end is located on the side of the partition plate 807 away from the diffusion paddle 806.

[0014] Specifically, the device utilizes diffusion reflux module 8 to significantly improve the alkaline washing effect of octafluoropropane gas. By diffusing the gas in the alkaline solution and refluxing it for secondary alkaline washing, the absorption effect of the alkaline solution on hydrogen fluoride and water in the gas is greatly improved, thereby enhancing the purification efficiency and effectiveness of the device for octafluoropropane.

[0015] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred embodiment, the bottom of the alkaline washing tank 1 is provided with a slot. A common sealing block 801 is provided outside the three diversion pipes 3. The outer side of the sealing block 801 is bolted to the inner wall of the slot. Each of the three diversion pipes 3 is provided with a booster pump 4. The output end of each booster pump 4 is connected to the diversion pipe 3 on the same side via a conduit. A fixing frame 802 is bolted to the inner wall of the alkaline washing tank 1. Two symmetrical openings are provided on the fixing frame 802. An isolation cover 803 is bolted to the inner wall of each opening. A motor 804 is bolted to the bottom inner wall of each isolation cover 803. The output end of each motor 804 is connected to a rotating shaft 805 via a coupling. The outer side of each rotating shaft 805 is bolted to the inner wall of a diffuser 806 on the same side. A pump 811 is bolted to the side of the partition plate 807 away from the ceramic gas stone 810. The output end of the pump 811 is connected to the return pipe 809 through a thin tube. The ceramic gas stone 810 is located above the connecting port 808. A pressure stabilizing chamber 812 is bolted to the outside of each of the three diversion pipes 3. A circular groove is opened on the upper side of each pressure stabilizing chamber 812, and a sealing cover 821 is installed inside each groove. A sealing ring 822 is installed on the outside of each sealing cover 821. The bottom of each sealing ring 822 is bolted to the upper side of the pressure stabilizing chamber 812 on the same side. A boss 819 is bolted to the upper side of each of the three pressure stabilizing chambers 812. Two symmetrical narrow openings are opened on the boss 819, and a single round rod 820 is rotatably connected to each narrow opening via a bearing. The outer surface of the container 813 is bolted with protrusions, and the protrusions are bolted to the side opposite to the sealing cover 821. A torsion spring 823 is installed on the outer surface of the round rod 820. Symmetrical shafts 814 and 815 are installed inside the receiving cylinder 813. Three circumferentially equidistant spiral plates 818 are bolted to the outer surface of each shaft 814 and 815. The outer surface of each spiral plate 818 is bolted to the inner wall of the receiving cylinder 813. A sealing plate 816 is installed above each receiving cylinder 813, and multiple circumferentially equidistant guide plates 817 are bolted to the outer surface of each sealing plate 816. Two symmetrical connecting frames 824 are bolted to the inner wall of each receiving cylinder 813, located above shaft 814 and shaft 815 respectively. Below, protective covers 825 are bolted to the opposite sides of the two connecting frames 824. Motors 826 are bolted to the inner walls of the protective covers 825. Through holes are opened on the shafts 814. Rotating rods 828 are rotatably connected to the through holes through bearings. The output end of the upper motor 826 is connected to the upper side of the rotating rod 828 through a coupling. Two dividing paddles 829 are installed in the receiving cylinder 813. The upper side of the upper dividing paddle 829 is bolted to the bottom of the rotating rod 828. The lower dividing paddle 829 is connected to the output end of the lower motor 826 through a coupling. The upper side of the connecting frame 824 is bolted to the bottom of the sealing plate 816.

[0016] Specifically, electronic valve 6 is closed, electronic valve 11 is opened, and vacuum pump 10 is started. After vacuum pump 10 extracts the gas from alkaline washing tank 1 to form a vacuum, electronic valve 11 and vacuum pump 10 are closed, and booster pump 4 is started. Booster pump 4 delivers octafluoropropane through inlet pipe 2 into diverter pipe 3 and accumulates in pressure stabilizing chamber 812. Under the torque of torsion spring 823, sealing cover 821 keeps pressure stabilizing chamber 812 closed. After the gas pressure in pressure stabilizing chamber 812 accumulates to a certain level, the gas pressure overcomes the torque of torsion spring 823 and pushes open sealing cover 821. Pressure stabilizing chamber 812 releases a portion of octafluoropropane into receiving cylinder 813, making the pressure in pressure stabilizing chamber 812 insufficient to continue pushing open sealing cover 821. Sealing cover 821 recloses, waiting for the next gas pressure accumulation. Octafluoropropane entering receiving cylinder 813 forms rising bubbles under buoyancy and rises along spiral plate 818. The motor is then started. Motor 826 drives the dividing paddle 827 to rotate, continuously cutting the bubbles and breaking them down into finer bubbles. After rising to the position of the sealing plate 816, the bubbles diffuse upwards and diffuse in all directions under the guidance of the guide plate 817. Motor 804 is started, driving the diffuser paddle 806 to rotate, continuously stirring and mixing the bubbles with the alkaline solution to perform an alkaline wash on the octafluoropropane. After the bubbles that float to the surface of the alkaline solution break, the octafluoropropane will settle on the surface of the alkaline solution because its density is greater than that of air. Pump 811 is started, and pump 811 draws the octafluoropropane in through the return pipe 809 and discharges it through the ceramic gas stone 810. The ceramic gas stone 810 further refines the gas into smaller bubbles, allowing the alkaline solution to perform a second alkaline wash on the octafluoropropane. After completion, the gas floats and settles. Air pump 7 is started, and electronic valve 6 is opened, allowing the extraction pipe 12 to extract the alkaline-washed octafluoropropane.

[0017] In specific application scenarios, the diffusion reflux module 8 is mainly suitable for the diffusion reflux stage in the diffusion reflux process. That is, the diffusion reflux module 8 uses the partition isolation plate 807, the reflux pipe 809 and the ceramic gas stone 810 to divide the alkaline solution in the alkaline washing tank 1 into two non-interfering parts, avoiding the mixing of the gas purified by the primary and secondary alkaline washing. By sharing the same alkaline solution, the utilization rate of resources is improved. The diffusion paddle 806, the sealing cover 821, the spiral plate 818 and the dividing paddle 829 effectively control the gas intake, so that the device can refine the octafluoropropane gas into small bubbles, ensuring sufficient contact between the alkaline solution and the gas, and improving the absorption effect of the alkaline solution on hydrogen fluoride.

[0018] Reference Figure 7 and Figure 8In a preferred embodiment, each of the three round rods 820 is provided with an outer ring 13. The outer ring 13 is bolted to the opposite side of the outer side of the same-side boss 819. The inner wall of each outer ring 13 is slidably connected with a connecting ring 14. The connecting rings 14 are all located outside the round rods 820. The inner wall of each connecting ring 14 is provided with a groove. One end of each torsion spring 823 is bolted to the outside of the same-side round rod 820, and the other end is engaged with the inner wall of the groove on the same side. The side of each of the three connecting rings 14 away from the torsion spring 823 is bolted with a toothed plate 17. The outside of each outer ring 13 is bolted with a positioning ring 15. The inner wall of each positioning ring 15 is provided with a toothed groove. The inner wall of each toothed groove is engaged with the outside of the same-side toothed plate 17. The side of the boss 819 close to the outer ring 13 is also bolted to the outer ring 13. Two symmetrical guide cylinders 18 are bolted together. Each guide cylinder 18 contains a spring 19, one end of which is bolted to the outside of the boss 819. The inner walls of the two guide cylinders 18 on the same side are slidably connected to the same anti-disengagement buckle 20. The end of the spring 19 away from the boss 819 is bolted to the outside of the anti-disengagement buckle 20 on the same side, and the outside of the anti-disengagement buckle 20 is engaged with the outside of the toothed plate 17 on the same side. An electronic valve 2 11 is installed on the outside of the exhaust pipe 9, and an electronic valve 1 6 is installed on the outside of the gas supply pipe 5. A vacuum pump 10 is bolted to the upper side of the alkaline washing tank 1. The output end of the vacuum pump 10 is connected to the exhaust pipe 9 through a short pipe. An air pump 7 is bolted to the upper side of the alkaline washing tank 1. The output end of the air pump 7 is connected to the outside of the gas supply pipe 5 through a gas guide pipe.

[0019] Specifically, when using a lower concentration of alkaline solution in the alkaline washing tank 1, the anti-disengagement buckle 20 is opened by overcoming the tension of the spring 19, and the toothed plate 17 is pulled out from the limiting groove 16 to release the lock on the toothed plate 17. The toothed plate 17 is rotated, causing the connecting ring 14 to drive the torsion spring 823 to rotate and store force, thereby increasing the torque of the torsion spring 823 on the sealing cover 821, extending the time for the pressure to accumulate in the pressure stabilizing chamber 812, and reducing the frequency of venting from the sealing cover 821. When using a higher concentration of alkaline solution in the alkaline washing tank 1, the above steps are reversed to increase the venting frequency. After adjustment, the toothed plate 17 is inserted into the limiting groove 16 to lock the toothed plate 17. The anti-disengagement buckle 20 is released, and under the pull of the spring 19, the anti-disengagement buckle 20 locks the toothed plate 17 in the limiting groove 16.

[0020] In specific application scenarios, the device can quickly and conveniently complete the energy storage and release of the torsion spring 823 by using the connecting ring 14, the limiting groove 16 and the toothed plate 17, thereby changing the gas pressure in the pressure stabilizing chamber 812 that pushes open the sealing cover 821, and thus controlling the frequency of gas release from the pressure stabilizing chamber 812 into the alkaline solution. This allows the device to obtain a good alkaline washing effect on the gas in alkaline solutions of different concentrations, improving the applicability of the device.

[0021] Working principle: Electronic valve 6 is closed, electronic valve 11 is opened, and vacuum pump 10 is started. Vacuum pump 10 extracts the gas from alkaline washing tank 1 to create a vacuum. Then, electronic valve 11 and vacuum pump 10 are closed, and booster pump 4 is started. Booster pump 4 delivers octafluoropropane through inlet pipe 2 into diverter pipe 3 and accumulates in pressure stabilizing chamber 812. Under the torque of torsion spring 823, sealing cover 821 keeps pressure stabilizing chamber 812 closed. After the gas pressure in pressure stabilizing chamber 812 accumulates to a certain level, the gas pressure overcomes the torque of torsion spring 823 and pushes open sealing cover 821. Pressure stabilizing chamber 812 releases a portion of octafluoropropane into receiving cylinder 813, thus stabilizing the gas pressure. The pressure inside the ballast chamber 812 is insufficient to push open the sealing cover 821 further. The sealing cover 821 recloses, awaiting the next pressure buildup. The octafluoropropane entering the container 813 forms rising bubbles under buoyancy and rises along the spiral plate 818. The second motor 826 is activated, driving the first dividing paddle 827 to rotate, continuously cutting the bubbles, turning large bubbles into fine small bubbles. After rising to the position of the sealing plate 816, guided by the guide plate 817, they diffuse upwards in all directions. The first motor 804 is activated, driving the diffuser paddle 806 to rotate, continuously stirring and mixing the bubbles with the alkaline solution. The octafluoropropane undergoes a first alkaline wash. After the bubbles that float to the surface of the alkaline solution break, the octafluoropropane, being denser than air, settles on the surface. Pump 811 is then activated, drawing the octafluoropropane through return pipe 809 and discharging it through ceramic gas stone 810. The ceramic gas stone 810 further refines the gas into smaller bubbles, allowing the alkaline solution to perform a second alkaline wash on the octafluoropropane. After this, the gas rises and settles. Air pump 7 is then activated, and electronic valve 6 is opened, allowing the extraction pipe 12 to draw out the alkaline-washed octafluoropropane. When using a lower concentration alkaline solution in the alkaline wash tank 1, the anti-disengagement buckle 20 is opened against the tension of spring 19, allowing the toothed plate 17 to... Pull the toothed plate 17 out of the limiting groove 16 to release the lock on the toothed plate 17. Rotate the toothed plate 17 to make the connecting ring 14 drive the torsion spring 823 to rotate and store force, thereby increasing the torque of the torsion spring 823 on the sealing cover 821, extending the time for the gas pressure to accumulate in the pressure stabilizing chamber 812, and reducing the frequency of venting from the sealing cover 821. When using a high concentration of alkaline solution in the alkaline washing tank 1, reverse the above steps to increase the venting frequency. After adjustment, insert the toothed plate 17 into the limiting groove 16 to lock the toothed plate 17. Release the anti-disengagement buckle 20. Under the pull of the spring 19, the anti-disengagement buckle 20 locks the toothed plate 17 in the limiting groove 16.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A distillation and purification apparatus for the generation of octafluoropropane, characterized in that, The alkali washing tank (1) is externally provided with an air inlet pipe (2), three branch pipes (3) are arranged on the air inlet pipe (2), the ends of the branch pipes (3) away from the air inlet pipe (2) are located in the alkali washing tank (1), two circular holes are formed in the upper side of the alkali washing tank (1), an exhaust pipe (9) and a gas conveying pipe (5) are respectively arranged in the circular holes, a diffusion backflow module (8) is arranged in the alkali washing tank (1), the diffusion backflow module (8) comprises a partition isolation plate (807), the bottom of the partition isolation plate (807) is fixedly connected with the inner wall of the bottom of the alkali washing tank (1), a communication opening (808) is formed in the bottom of the partition isolation plate (807), a backflow pipe (809) is arranged on the partition isolation plate (807), two symmetrical diffusion paddles (806) are arranged in the alkali washing tank (1), a ceramic air stone (810) is fixedly connected with the end of the backflow pipe (809) away from the diffusion paddle (806), a gas extraction pipe (12) is arranged in the alkali washing tank (1), one end of the gas extraction pipe (12) is communicated with the gas conveying pipe (5), and the other end is located on the side of the partition isolation plate (807) away from the diffusion paddle (806). A notch is formed in the bottom of the alkali washing tank (1), one closed block (801) is arranged on the outer sides of the three branch pipes (3), the outer side of the closed block (801) is fixedly connected with the inner wall of the notch, a booster pump (4) is arranged on the outer side of each of the three branch pipes (3), the output end of the booster pump (4) is connected with the branch pipe (3) on the same side through a conduit, and the inner wall of the alkali washing tank (1) is fixedly connected with a fixing frame (802), two symmetrical apertures are formed in the fixing frame (802), the inner wall of each aperture is fixedly connected with an isolation cover (803), the bottom inner wall of the isolation cover (803) is fixedly connected with a motor one (804), the output end of the motor one (804) is connected with a rotating shaft (805) through a coupling, and the outer side of the rotating shaft (805) is fixedly connected with the inner wall of the diffusion paddle (806) on the same side.

2. The distillation purification device for octafluoropropane generation according to claim 1, characterized by The side of the partition isolation plate (807) away from the ceramic air stone (810) is fixedly connected with a pump (811), the output end of the pump (811) is connected with the backflow pipe (809) through a thin tube, the ceramic air stone (810) is located above the communication opening (808), and the outer side of each of the three branch pipes (3) is fixedly connected with a pressure stabilizing bin (812), the upper side of each pressure stabilizing bin (812) is provided with a circular groove, a closed cover (821) is arranged in the circular groove, the outer side of the closed cover (821) is provided with a sealing ring (822), and the bottom of the sealing ring (822) is fixedly connected with the upper side of the pressure stabilizing bin (812) on the same side.

3. The distillation purification device for octafluoropropane generation according to claim 2, characterized by The upper side of the three voltage stabilizing bins (812) is connected with a boss (819) through a bolt, two symmetrical thin openings are formed in the boss (819), a same round rod (820) is movably connected in the thin openings, a protruding block is fixedly connected to the outer part of the round rod (820), the protruding block is fixedly connected to the side opposite to the closing cover (821), a torsional spring (823) is arranged on the outer part of the round rod (820), symmetrical shaft one (814) and shaft two (815) are arranged in the containing cylinder (813), three helical plates (818) are fixedly connected to the outer part of the shaft one (814) and the shaft two (815) and are distributed at equal intervals, the outer part of the helical plate (818) is fixedly connected to the inner wall of the containing cylinder (813), a flow closing plate (816) is arranged above the containing cylinder (813), a plurality of guide pieces (817) are fixedly connected to the outer part of the flow closing plate (816) and are distributed at equal intervals.

4. The distillation purification device for octafluoropropane generation according to claim 3, characterized by The inner wall of the containing cylinder (813) is fixedly connected with two symmetrical connecting frames (824), which are located above the shaft one (814) and below the shaft two (815), respectively, the side opposite to the two connecting frames (824) is fixedly connected with a protective cover (825), the inner wall of the protective cover (825) is fixedly connected with a motor two (826), and a through hole is formed in the shaft one (814).

5. The distillation purification device for octafluoropropane generation according to claim 4, characterized by The through hole is movably connected with a rotating rod (828), the output end of the upper motor two (826) is connected with the upper side of the rotating rod (828) through a shaft coupling, two upper division paddles two (829) are arranged in the containing cylinder (813), the upper side of the upper division paddle two (829) is fixedly connected with the bottom of the rotating rod (828), the lower division paddle two (829) is connected with the output end of the lower motor two (826) through a shaft coupling, and the upper side of the upper connecting frame (824) is fixedly connected with the bottom of the flow closing plate (816).

6. The distillation purification device for octafluoropropane generation according to claim 3, characterized by The outer part of the three round rods (820) is provided with an external ring (13), the side opposite to the outer part of the same side boss (819) is fixedly connected with the external ring (13), the inner wall of the external ring (13) is slidably connected with a connecting ring (14), the connecting ring (14) is located on the outer part of the round rod (820), a cutting groove is formed in the inner wall of the connecting ring (14), one end of the torsional spring (823) is fixedly connected with the outer part of the same side round rod (820), and the other end is clamped with the inner wall of the same side cutting groove.

7. The distillation purification device for octafluoropropane generation according to claim 6, characterized by The side away from the torsional spring (823) of the three connecting rings (14) is fixedly connected with a toothed plate (17), the outer part of the external ring (13) is fixedly connected with a positioning ring (15), a tooth groove is formed in the inner wall of the positioning ring (15), the inner wall of the tooth groove is clamped with the outer part of the same side toothed plate (17), and the side close to the external ring (13) of the boss (819) is fixedly connected with two symmetrical guide cylinders (18).

8. The distillation purification device for octafluoropropane generation according to claim 7, characterized by A plurality of said guide cylinder (18) are provided with spring (19), one end of spring (19) is fixedly connected with the outside of the boss (819), the inner wall of two guide cylinders (18) located on the same side are slidingly connected with the same anti-tripping (20), the end of spring (19) away from the boss (819) is fixedly connected with the outside of the anti-tripping (20) on the same side, and the outside of the anti-tripping (20) is clamped with the outside of the toothed plate (17) on the same side.

9. The distillation purification device for octafluoropropane generation according to claim 1, characterized by The outside of the exhaust pipe (9) is provided with an electronic valve two (11), the outside of the gas pipe (5) is provided with an electronic valve one (6), the upper side of the caustic washing tank (1) is fixedly connected with a vacuum pump (10), the output end of the vacuum pump (10) is connected with the exhaust pipe (9) through a short pipe, and the upper side of the caustic washing tank (1) is fixedly connected with a gas pump (7), the output end of the gas pump (7) is connected with the outside of the gas pipe (5) through a gas guide pipe.

Images