Tail gas recovery device for organic silicon production

Abstract

The invention belongs to the technical field of energy-saving and environment-friendly industries, and particularly relates to an organic silicon production tail gas recovery device which comprises a first rack, a recovery tank is fixedly arranged on the inner side of the first rack, the top of the recovery tank communicates with a first pipe, a first one-way valve is installed on the first pipe, and a second one-way valve is installed on the first one-way valve. A circular-truncated-cone-shaped adsorption filter element is embedded in the recovery tank, and the adsorption filter element is filled with efficient activated carbon; according to the device, high-pressure tail gas subsequently entering the recovery tank is more easily captured by the adsorption filter element, so that the saturation efficiency and the treatment depth of the adsorption filter element are remarkably improved, the tail gas flow direction is opposite to the rotation direction of the adsorption filter element through rotation of the fan blades, relative movement is formed, and the contact probability and the path length of the tail gas and the surface of the adsorption filter element are increased; the periodic change of the height of the fan blades is realized through magnetic force driving, the airflow field is continuously disturbed, the full contact of the tail gas and the filter element is promoted, and the adsorption or filtering effect is further improved.

Description

Technical Field

[0001] This invention belongs to the field of energy conservation and environmental protection technology, specifically a tail gas recovery device for organosilicon production. Background Technology

[0002] The exhaust gas from organosilicon production is complex, containing both recyclable resources such as chloromethane and silanes, as well as dust and hazardous substances. Currently, the mainstream technologies in the industry are mainly divided into two categories: resource recovery and compliance treatment. The former pursues economic benefits, while the latter focuses on environmental compliance.

[0003] Existing technologies disclose several invention patents in the field of energy conservation and environmental protection. Among them, invention patent CN117101359A discloses a tail gas recovery device for organosilicon production, including a base, an inlet tank and a removal tank fixedly connected to the base, and a recovery tank fixedly connected to the top of the inlet tank. The surface and interior of the inlet tank are respectively provided with an inlet component and a drive component. The removal tank is provided with a removal component, and the recovery tank is provided with a recovery component. The tail gas generated during organosilicon production can first enter the inlet tank, and then successively enter the removal tank and the recovery tank. When the tail gas enters the removal tank, the impurities in the tail gas are absorbed sequentially by three treatment liquids with different compositions, so that only the recyclable tail gas enters the recovery tank. After the recyclable tail gas enters the recovery tank, the recovery liquid can contact the tail gas in the recovery tank, thereby dissolving the recyclable tail gas into the recovery liquid. Finally, the recovery liquid is recovered to achieve the recovery of tail gas.

[0004] Existing technologies for recovering waste gas from organosilicon production still have some shortcomings in their application. While porous adsorbents (such as high-efficiency activated carbon and molecular sieves) selectively adsorb organic matter in waste gas, resulting in high purification efficiency and deep treatment, waste gas from organosilicon production often contains a large amount of water vapor. Porous adsorbents will preferentially adsorb water molecules, thereby reducing the adsorption efficiency for organic matter. Particulate matter, droplets, and high-boiling-point viscous substances in the waste gas will clog the pores of activated carbon, causing it to deactivate rapidly.

[0005] Based on this, the present invention designs a tail gas recovery device for organosilicon production to solve the above problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes a tail gas recovery device for organosilicon production. This invention primarily addresses some deficiencies in existing tail gas recovery technologies for organosilicon production. While porous adsorbents (such as high-efficiency activated carbon and molecular sieves) selectively adsorb organic matter in the tail gas, achieving high purification efficiency and deep treatment capabilities, organosilicon production tail gas often contains a large amount of water vapor. Porous adsorbents preferentially adsorb water molecules, thus reducing the adsorption efficiency for organic matter. Furthermore, particulate matter, droplets, and high-boiling-point viscous substances in the waste gas can clog the pores of activated carbon, causing it to rapidly deactivate.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: a tail gas recovery device for organosilicon production, comprising a first frame, a recovery tank fixedly installed inside the first frame, a first pipe connected to the top of the recovery tank, a first one-way valve installed on the first pipe, a frustum-shaped adsorption filter element embedded inside the recovery tank, the adsorption filter element being filled with high-efficiency activated carbon, a piston tank located at the bottom of the inner side of the first frame, the piston tank being below the recovery tank, a piston rod slidably sleeved at the front end of the piston tank, a hydraulic cylinder installed on the front end face of the first frame, the output end of the hydraulic cylinder being connected to the end of the piston rod, a piston disc fixedly connected to the other end of the piston rod, the piston disc being slidably disposed inside the piston tank, one side of the piston tank being connected to the bottom of the recovery tank through a second pipe, a second one-way valve installed on the second pipe.

[0008] Preferably, a flow-gathering hopper is connected to the bottom of the inner wall of the recycling tank, and a flow-gathering port is opened on the circumferential surface of the flow-gathering hopper. A No. 3 pipe is connected to the side wall of the recycling tank at the position corresponding to the flow-gathering port. A No. 3 one-way valve is installed on the No. 3 pipe. The other end of the No. 3 pipe is connected to the piston tank, and the connection position is located on the other side of the piston disc relative to the No. 2 pipe. A No. 4 pipe is also connected to the bottom of the recycling tank at the position corresponding to the No. 3 pipe, and a No. 4 one-way valve is installed on the No. 4 pipe.

[0009] Preferably, a linkage shaft is fixedly connected to the top of the inner side of the adsorption filter element. The bottom end of the linkage shaft passes through the bottom of the recovery tank and the second pipe in sequence and extends into the inside of the piston tank. A first gear is fixedly sleeved at its end. A notch is opened on the piston rod corresponding to the position of the first gear. A toothed plate is provided on the inner side wall of the notch. The toothed plate meshes with the first gear.

[0010] Preferably, a second gear is fixedly sleeved on the linkage shaft, and a third gear is rotatably connected to the bottom of the inner side of the recycling tank. The third gear meshes with the second gear, and an internal gear ring also meshes on the third gear. An adapter sleeve is rotatably sleeved on the outer ring surface of the internal gear ring. The adapter sleeve is located inside the recycling tank. A ring sleeve is connected to the top of the internal gear ring, and multiple fan blades are fixed on the inner ring surface of the ring sleeve. These fan blades are distributed in a ring array.

[0011] Preferably, a fixed sleeve is connected to the bottom of the inner side of the recycling tank. The inner side wall of the fixed sleeve has multiple sliding grooves arranged in a circular array. A slider is slidably connected in the sliding groove. The slider is connected to the outer ring surface of the ring sleeve. A spring is connected to the bottom of the slider. The slider is elastically supported by the spring and the bottom of the inner side of the sliding groove. The bottom of the ring is connected to multiple No. 1 magnetic pads, which are arranged in a ring array. The bottom of the inner side of the recycling tank is connected to multiple No. 2 magnetic pads, and the magnetic poles of the No. 2 magnetic pads are the same as those of the No. 1 magnetic pads.

[0012] Preferably, an eccentric wheel is fixedly sleeved on the linkage shaft, and the eccentric wheel is located inside the adsorption filter element.

[0013] Preferably, a third frame is provided on one side of the first frame, and a second separation tank is embedded in the inner side of the third frame. The second separation tank is connected to a second air inlet pipe and a second exhaust pipe in the tangential direction, and the second exhaust pipe is located above the second air inlet pipe. A second adapter pipe is rotatably connected to the top of the inner side of the second separation tank. A second impeller is fixedly sleeved on the second adapter pipe. The second impeller is set corresponding to the second air inlet pipe. The second impeller has a hollow structure and is connected to the second adapter pipe. The top of the second adapter pipe is rotatably connected to a first chilled water pipe, and its bottom is rotatably connected to a second chilled water pipe. The other end of the No. 2 discharge pipe is connected to the other end of the No. 5 pipe, and the No. 5 pipe is equipped with a No. 5 one-way valve.

[0014] Preferably, a wire mesh is fixedly sleeved on the linkage shaft, and the wire mesh is disposed between the second discharge pipe and the second impeller.

[0015] Preferably, a third frame is provided behind the second frame, and a first separation tank is embedded in the inner side of the third frame. The first separation tank is connected to a first air inlet pipe and a first exhaust pipe, and the first exhaust pipe is located above the first air inlet pipe. A first transfer pipe is rotatably connected to the top of the inner side of the first separation tank. A first impeller is fixedly sleeved on the first transfer pipe corresponding to the first air inlet pipe. The first impeller has a hollow structure and is connected to the first transfer pipe. A first circulating water pipe is rotatably connected to the inner side of the top end of the first transfer pipe, and a second circulating water pipe is rotatably connected to the inner side of the bottom end of the first transfer pipe. The other end of the first exhaust pipe is connected to a sixth pipe connected to the second air inlet pipe.

[0016] The beneficial effects of this invention are as follows: 1. In this invention, during the compression stage of the piston disc retraction, the exhaust gas is compressed and heated, changing its phase state or reducing its viscosity. This makes it easier for the high-pressure exhaust gas entering the recovery tank to be captured by the adsorption filter element, thereby significantly improving the saturation efficiency and treatment depth of the adsorption filter element. The rotation of the fan blades causes the exhaust gas flow direction to be opposite to the rotation direction of the adsorption filter element, forming relative motion. This increases the contact probability and path length between the exhaust gas and the surface of the adsorption filter element, which is beneficial to improving the adsorption efficiency. The periodic change of the fan blade height is achieved through magnetic drive, continuously disturbing the airflow field and promoting full contact between the exhaust gas and the filter element, further improving the adsorption or filtration effect.

[0017] 2. In this invention, two identical separation tanks, No. 1 and No. 2, utilize the strong centrifugal force generated by tangential air intake and the flow guidance of No. 1 and No. 2 impellers to efficiently throw denser impurities against the tank wall and collect them for discharge. The secondary vortex effect further improves the separation efficiency and ensures the cleanliness of the exhaust gas. The secondary separation uses chilled water cooling, which can reduce the tail gas temperature to an extremely low 2-10℃, causing most of the water vapor in the tail gas to condense into liquid water and be discharged, achieving deep dehydration of the tail gas and creating favorable conditions for the subsequent adsorption process.

[0018] 3. In this invention, the primary separation uses circulating water cooling to reduce the tail gas temperature to 30-40°C, effectively condensing and recovering some of the high-boiling-point organosilicon monomers entrained in the tail gas. This not only reduces material loss but also significantly improves resource utilization and reduces production costs. The cooling medium is directly injected into the hollow structure layer of the first or second impeller, realizing an integrated design of cooling and separation. This direct heat exchange method has low thermal resistance and high heat exchange efficiency, making the system structure more compact and reliable.

[0019] 4. In this invention, during the rotation of the adsorption filter element, the centrifugal force generated by the frustum-shaped structure actively throws the impurities adsorbed on its surface toward the inner wall of the recovery tank, realizing the active detachment and collection of impurities. This gives the adsorption filter element a strong self-cleaning ability, effectively avoids clogging of the adsorption filter element, and significantly extends its service life. The linkage shaft drives the filter element to rotate while driving the eccentric wheel to rotate, and the resulting vibration is transmitted to the adsorption filter element. This combined motion of rotation and vibration helps to loosen the impurities attached to the adsorption filter element. Together with the centrifugal force, it greatly improves the separation efficiency of impurities.

[0020] 5. In this invention, the reciprocating motion of the piston disc driven by the hydraulic cylinder alternately completes two actions in the piston tank: negative pressure intake (recovering exhaust gas) and positive pressure discharge (compression and conveying), realizing seamless automated connection between exhaust gas recovery and adsorption treatment processes. The periodic repulsive force generated by the rotation of the first and second magnetic pads, combined with spring reset, drives the dynamic change of the fan blade height. This non-contact magnetic drive method reduces mechanical wear and improves the smoothness of movement and the long-term operational reliability of the system. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a cross-sectional view of the No. 1 separation tank in this invention. Figure 5 This is a cross-sectional view of the No. 2 separation tank in this invention. Figure 6 This is a cross-sectional view of the No. 3 separation tank in this invention. Figure 7 This is a schematic cross-sectional view of the piston tank in this invention from below; Figure 8 This is the present invention. Figure 6 Enlarged structural diagram at point A; In the diagram: 1. Frame No. 1; 2. Recycling tank; 3. Pipe No. 1; 4. Check valve No. 1; 5. Adsorption filter element; 6. Piston tank; 7. Pipe No. 2; 8. Check valve No. 2; 9. Piston disc; 10. Piston rod; 11. Hydraulic cylinder; 12. Pipe No. 3; 13. Check valve No. 3; 14. Pipe No. 4; 15. Check valve No. 4; 16. Pipe No. 5; 17. Gear No. 1; 18. Gear plate; 19. Linkage shaft; 20. Converging hopper; 21. Converging port; 22. Gear No. 2; 23. Gear No. 3; 24. Internal gear ring; 25. Adapter sleeve; 26. Ring sleeve; 27. Fan blade; 28. Slide groove; 29. Slide plate; 30. Spring; 31. Magnetic pad No. 1; 32. Magnetic pad No. 2; 33. Frame No. 2; 34. Separator No. 1; 35. Air inlet pipe No. 1; 36. Discharge pipe No. 1; 37. Transfer pipe No. 1; 38. Impeller No. 1; 39. Circulating water pipe No. 1; 40. Circulating water pipe No. 2; 41. Frame No. 3; 42. Separator No. 2; 43. Air inlet pipe No. 2; 44. Discharge pipe No. 2; 45. Transfer pipe No. 2; 46. Impeller No. 2; 47. Chilled water pipe No. 1; 48. Chilled water pipe No. 2; 49. Wire mesh; 50. Pipe No. 6; 51. Eccentric wheel; 52. Fixing sleeve. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 8 As shown, a tail gas recovery device for organosilicon production includes a first frame 1, a recovery tank 2 fixedly installed inside the first frame 1, a first pipe 3 connected to the top of the recovery tank 2, a first check valve 4 installed on the first pipe 3, a frustum-shaped adsorption filter element 5 embedded inside the recovery tank 2, the adsorption filter element 5 being filled with high-efficiency activated carbon, a piston tank 6 located at the bottom of the inner side of the first frame 1, the piston tank 6 being below the recovery tank 2, a piston rod 10 slidably sleeved at the front end of the piston tank 6, a hydraulic cylinder 11 installed on the front end face of the first frame 1, the output end of the hydraulic cylinder 11 being connected to the end of the piston rod 10, a piston disc 9 fixedly connected to the other end of the piston rod 10, the piston disc 9 being slidably installed inside the piston tank 6, one side of the piston tank 6 being connected to the bottom of the recovery tank 2 through a second pipe 7, a second check valve 8 installed on the second pipe 7.

[0025] This implementation method is as follows: In the first stage, adsorption and recovery, the piston disc 9 moves forward, the hydraulic cylinder 11 is controlled to work, and the piston disc 9 is pushed by the piston rod 10. At this time, the pressure in the space in front of the piston disc 9 in the piston tank 6 gradually decreases, the fourth check valve 15 opens, and the exhaust gas after deep dehydration is sucked into the piston tank 6 through the fifth pipe 16. At the same time, the pressure in the space behind the piston disc 9 gradually increases, the third check valve 13 opens, and the pre-treated recovery product is discharged through the fourth pipe 14. In the second stage, compression adsorption occurs. Piston disc 9 retracts, and hydraulic cylinder 11 pulls piston disc 9 through piston rod 10. The pressure in the space in front of piston disc 9 in piston tank 6 gradually increases. Check valve 15 closes and check valve 8 opens. The exhaust gas after compression and heating flows into recovery tank 2 through pipe 7. The exhaust gas in recovery tank 2 flows upward and is adsorbed by adsorption filter element 5. In this stage, check valve 4 opens, and the clean exhaust gas after adsorption by adsorption filter element 5 is discharged through pipe 3. When the No. 3 check valve 13 is opened, the impurities flowing to the bottom of the recovery tank 2 are collected by the flow-gathering bucket 20 and sucked into the piston tank 6 through the No. 3 pipe 12 and the flow-gathering port 21. The reciprocating motion of the piston disc 9 driven by the hydraulic cylinder 11 alternates between negative pressure intake and positive pressure discharge in the piston tank 6, realizing the automated connection between the exhaust gas recovery and adsorption treatment process. During the retraction phase of the piston disc 9, the exhaust gas is compressed to raise its temperature, which helps to reduce the viscosity of the exhaust gas or change its phase state. Then, the high-pressure exhaust gas is sent to the recovery tank 2 for adsorption, which improves the saturation efficiency and treatment depth of the adsorption filter element 5.

[0026] Specifically, a flow-gathering hopper 20 is connected to the bottom of the inner wall of the recovery tank 2. A flow-gathering port 21 is opened on the circumferential surface of the flow-gathering hopper 20. A third pipe 12 is connected to the side wall of the recovery tank 2 at the position corresponding to the flow-gathering port 21. A third one-way valve 13 is installed on the third pipe 12. The other end of the third pipe 12 is connected to the piston tank 6, and the connection position is located on the other side of the piston disc 9 relative to the second pipe 7. A fourth pipe 14 is also connected to the bottom of the recovery tank 2 at the position corresponding to the third pipe 12. A fourth one-way valve 15 is installed on the fourth pipe 14. A linkage shaft 19 is fixedly connected to the top of the inner side of the adsorption filter element 5. The bottom end of the linkage shaft 19 passes through the bottom of the recovery tank 2 and the second pipe 7 in sequence and extends into the interior of the piston tank 6. A first gear 17 is provided on the end fixing sleeve 52. A notch is opened on the piston rod 10 at the position corresponding to the first gear 17. A toothed plate 18 is provided on the inner wall of the notch. The toothed plate 18 meshes with the first gear 17.

[0027] Specifically, in this embodiment: when the hydraulic rod pulls the piston disc 9 through the piston rod 10, the piston rod 10 drives the toothed plate 18 to move linearly in sync. The toothed plate 18 then drives the first gear 17, which transmits the rotational motion to the adsorption filter element 5 through the linkage shaft 19. During this process, the compressed exhaust gas flows towards the adsorption filter element 5, while the adsorption filter element 5 maintains a rapid rotation. Since the adsorption filter element 5 has a frustum-shaped structure, the centrifugal force generated during its rotation throws the impurities adsorbed on its surface toward the inner wall of the recovery tank 2, thereby achieving the active detachment and collection of impurities. By utilizing the centrifugal force generated by the frustum-shaped filter element during rotation, the adsorbed impurities are actively detached and thrown toward the inner wall of the recovery tank 2, improving the separation efficiency of impurities, enhancing the self-cleaning ability of the adsorption filter element 5, avoiding clogging, and extending its service life.

[0028] Specifically, a second gear 22 is fixedly connected to a sleeve 52 on the linkage shaft 19, and a third gear 23 is rotatably connected to the bottom inner side of the recycling tank 2. The third gear 23 meshes with the second gear 22. An internal gear ring 24 also meshes with the third gear 23. A transition sleeve 25 is rotatably sleeved on the outer ring surface of the internal gear ring 24. The transition sleeve 25 is located inside the recycling tank 2. A ring sleeve 26 is connected to the top of the internal gear ring 24. Multiple fan blades 27 are fixed on the inner ring surface of the ring sleeve 26. These fan blades 27 are distributed in a ring array.

[0029] Specifically, in this embodiment, as the linkage shaft 19 rotates continuously, its power is transmitted to the internal gear ring 24 through the meshing of gear 22 and gear 3. When the internal gear ring 24 rotates inside the adapter sleeve 25, it drives several fan blades 27 to rotate synchronously through the ring sleeve 26. The rotation of the fan blades 27 changes the flow direction of the compressed exhaust gas, making the flow direction of the exhaust gas and the rotation direction of the adsorption filter element 5 mutually opposite. This creates a relative motion between the airflow and the adsorption filter element 5. The mutually opposite flow state can increase the contact probability and path length between the exhaust gas and the surface of the adsorption filter element 5, which may help improve the adsorption efficiency.

[0030] Specifically, a fixed sleeve 52 is connected to the bottom of the inner side of the recycling tank 2. The inner wall of the fixed sleeve 52 is provided with multiple sliding grooves 28, which are arranged in a ring array. A slider is slidably connected in the sliding groove 28. The slider is connected to the outer ring surface of the ring sleeve 26. A spring 30 is connected to the bottom of the slider. The slider is elastically supported by the spring 30 and the bottom of the inner side of the sliding groove 28. The bottom of the ring 26 is connected to multiple first magnetic pads 31, which are arranged in a ring array. The bottom of the inner side of the recycling tank 2 is connected to multiple second magnetic pads 32. The magnetic poles of the second magnetic pads 32 and the first magnetic pads 31 are the same.

[0031] In this specific embodiment, the internal gear ring 24 rotates, causing multiple first magnetic pads 31 at its bottom to move in a circular motion synchronously. When the first magnetic pad 31 rotates close to the second magnetic pad 32 fixed below, the repulsive force between them pushes the adapter sleeve 25, causing it to slide in the slide groove 28 via the slider. At the same time, the spring 30 is stretched, causing it to undergo elastic deformation. As the first magnetic pad 31 gradually moves away from the second magnetic pad 32, the repulsive force weakens, the spring 30 returns to its original position, releasing its elastic force, and pulling the adapter sleeve 25 and the internal gear ring 24 downward. This periodic reciprocating motion achieves the height adjustment of the fan blade 27. The dynamic adjustment means that the distance between the fan blade 27 and the adsorption filter element 5 can change in real time with the rotation cycle. The periodic repulsive force generated by the rotation of the first magnetic pad 31 and the second magnetic pad 32 and the restoring force of the spring 30 drive the adapter sleeve 25 to reciprocate, thereby realizing the real-time adjustment of the distance between the fan blade 27 and the adsorption filter element 5. The dynamic change of the height of the fan blade 27 further disturbs the airflow field, which may promote more complete contact between the exhaust gas and the filter element, thereby improving the adsorption or filtration effect. The force is transmitted through magnetic repulsion, which reduces mechanical wear and improves the smoothness and reliability of the movement.

[0032] Specifically, an eccentric wheel 51 is fixedly connected to the linkage shaft 19 via a fixed sleeve 52, and the eccentric wheel 51 is located inside the adsorption filter element 5.

[0033] In this embodiment, the linkage shaft 19 drives the adsorption filter element 5 to rotate rapidly, and also drives the eccentric wheel 51 to rotate synchronously. The vibration generated by the rotation of the eccentric wheel 51 is then transmitted to the adsorption filter element 5 through the linkage shaft 19. The combined rotation and vibration motion of the adsorption filter element 5 is realized through the same linkage shaft 19. The vibration acts on the filter element to help loosen the attached impurities and, together with the centrifugal force, improves the impurity separation efficiency.

[0034] Specifically, a third frame 41 is provided on one side of the first frame 1. A second separation tank 42 is embedded inside the third frame 41. The second separation tank 42 is connected to a second air inlet pipe 43 and a second exhaust pipe 44 in the tangential direction. The second exhaust pipe 44 is located above the second air inlet pipe 43. The top of the inner side of the second separation tank 42 is rotatably connected to a second transfer pipe 45. A second impeller 46 is fixedly connected to the second transfer pipe 45 with a fixed sleeve 52. The second impeller 46 is set corresponding to the second air inlet pipe 43. The second impeller 46 has a hollow structure and is connected to the second transfer pipe 45. The top of the second transfer pipe 45 is rotatably connected to a first chilled water pipe 47, and its bottom is rotatably connected to a second chilled water pipe 48. The other end of the No. 2 discharge pipe 44 is connected to the other end of the No. 5 pipe 16, and the No. 5 one-way valve is installed on the No. 5 pipe 16.

[0035] Specifically, in this embodiment: the exhaust gas, after initial cooling, enters the No. 2 air inlet pipe 43 through the No. 6 pipe 50 and flows rapidly tangentially into the No. 2 separator tank 42. After entering axially, the exhaust gas undergoes strong rotation under the guiding action of the No. 2 impeller 46. The airflow spirals downwards along the cylinder into the conical section. Under centrifugal force, denser impurities are thrown towards the wall and fall along the wall to the dust discharge port at the bottom of the inner side of the No. 2 separator tank 42, eventually collecting at the bottom of the equipment and being discharged through the sewage discharge port. Simultaneously, the rotating airflow contracts towards the center and flows upwards, forming a secondary vortex before being discharged through the No. 2 discharge pipe 44. During this separation process... In this system, chilled water is used as the cooling medium. It is injected into the No. 2 transfer pipe 45 through the No. 1 chilled water pipe 47. The chilled water quickly fills the hollow structure layer of the No. 2 impeller 46 and then flows through the No. 2 chilled water pipe 48 to complete the circulation and discharge, achieving continuous cooling. This process can reduce the exhaust gas temperature to 2℃-10℃ or even lower, causing most of the water vapor in the exhaust gas to condense into liquid water, achieving deep dehydration. By utilizing centrifugal force and secondary eddy current, the separation efficiency of impurities and condensate is improved, ensuring exhaust cleanliness. The chilled water directly fills the hollow layer of the impeller, realizing an integrated design of cooling and separation, with high heat exchange efficiency and a compact and reliable system.

[0036] Specifically, a wire mesh 49 is fixedly attached to the linkage shaft 19 via a fixed sleeve 52, and the wire mesh 49 is positioned between the second discharge pipe 44 and the second impeller 46.

[0037] Specifically, in this embodiment, the exhaust gas flowing to the second discharge pipe 44 needs to be filtered by the wire mesh 49. The fine wire mesh 49 captures larger droplets, which is highly efficient and has a small pressure drop.

[0038] Specifically, a third frame 41 is installed behind the second frame 33. A first separation tank 34 is embedded inside the third frame 41. The first separation tank 34 is connected to a first air inlet pipe 35 and a first exhaust pipe 36. The first exhaust pipe 36 is located above the first air inlet pipe 35. A first transfer pipe 37 is rotatably connected to the top of the inner side of the first separation tank 34. A first impeller 38 is connected to the first transfer pipe 37 corresponding to the first air inlet pipe 35 fixed sleeve 52. The first impeller 38 has a hollow structure and is connected to the first transfer pipe 37. A first circulating water pipe 39 is rotatably connected to the inner side of the top of the first transfer pipe 37. A second circulating water pipe 40 is rotatably connected to the inner side of the bottom of the first transfer pipe 37. The other end of the first exhaust pipe 36 is connected to the second air inlet pipe 43 through a sixth pipe 50.

[0039] Specifically, in this embodiment, the No. 1 separator 34 and the No. 2 separator 42 have the same structure, with a conical cylinder as the core. The exhaust gas from organosilicon production is first introduced into the No. 1 air inlet pipe 35 through a pipeline, and then rapidly enters the No. 1 separator 34 tangentially. After entering axially, the exhaust gas is strongly rotated by the guiding effect of the No. 1 impeller 38. The airflow spirals downwards along the cylinder into the conical section. Under the action of centrifugal force, the denser impurities are thrown towards the wall and fall along the wall to the dust discharge port at the bottom of the inner side of the No. 1 separator 34, and finally collect at the bottom of the equipment and are discharged through the sewage discharge port. At the same time, the rotating airflow contracts towards the center and flows upward, forming a secondary vortex, and then exits through the No. 1 discharge pipe 3. 6. During the separation process, circulating water is used as the cooling medium. It is injected into the No. 1 transfer pipe 37 through the No. 1 circulating water pipe 39. After the circulating water quickly fills the hollow structure layer of the No. 1 impeller 38, it flows through the No. 2 circulating water pipe 40 to complete the circulation and discharge, achieving continuous cooling. This cooling process can reduce the exhaust gas temperature from a potentially high value to 30-40°C, thereby condensing and recovering some of the high-boiling-point organosilicon monomers entrained in the exhaust gas and effectively removing most of the sensible heat. By utilizing centrifugal and eddy current effects, the separation efficiency of high-density impurities in the exhaust gas is significantly improved, ensuring exhaust cleanliness. Condensing and recovering high-boiling-point organosilicon monomers in the exhaust gas reduces material loss and improves resource utilization.

[0040] During operation, the No. 1 separator 34 and the No. 2 separator 42 have the same structure, with a conical cylinder as their core. The exhaust gas from organosilicon production is first introduced into the No. 1 air inlet pipe 35 through a pipeline, and then rapidly enters the No. 1 separator 34 tangentially. After entering axially, the exhaust gas is strongly rotated by the guiding effect of the No. 1 impeller 38. The airflow spirals downwards along the cylinder into the conical section. Under the action of centrifugal force, denser impurities are thrown against the wall and fall along the wall to the dust discharge port at the bottom of the inner side of the No. 1 separator 34, eventually collecting at the bottom of the equipment and being discharged through the sewage outlet. At the same time, the rotating airflow contracts towards the center and flows upwards, forming a secondary vortex before exiting through the No. 1 discharge pipe 36. During the separation process, circulating water is used as the cooling medium. It is injected into the No. 1 transfer pipe 37 through the No. 1 circulating water pipe 39. The circulating water quickly fills the hollow structure layer of the No. 1 impeller 38 and then flows through the No. 2 circulating water pipe 40 to complete the circulation and discharge, achieving continuous cooling. This cooling process can reduce the exhaust gas temperature from the possible high value to 30-40°C, thereby condensing and recovering some of the high-boiling-point organosilicon monomers entrained in the exhaust gas, effectively removing most of the sensible heat. By utilizing centrifugal and eddy current effects, the separation efficiency of high-density impurities in the exhaust gas is significantly improved, ensuring exhaust cleanliness. At the same time, the high-boiling-point organosilicon monomers are condensed and recovered, reducing material loss and improving resource utilization. After initial cooling, the exhaust gas enters the No. 2 inlet pipe 43 through pipe No. 6 50, and flows rapidly tangentially into the No. 2 separator tank 42. Upon axial entry, the exhaust gas undergoes strong rotation under the guidance of the No. 2 impeller 46. The airflow spirals downwards along the cylindrical body into the conical section. Under centrifugal force, denser impurities are thrown against the tank wall and fall along the wall to the dust outlet at the bottom of the inner side of the No. 2 separator tank 42, eventually collecting at the bottom of the equipment and being discharged through the drain outlet. Simultaneously, the rotating airflow contracts towards the center and flows upwards, forming a secondary vortex before being discharged through the No. 2 discharge pipe 44. During this separation process, chilled water is used as... As the cooling medium, chilled water is injected into the second transfer pipe 45 through the first chilled water pipe 47. The chilled water quickly fills the hollow structure layer of the second impeller 46, and then flows through the second chilled water pipe 48 to complete the circulation and discharge, achieving continuous cooling. This process can reduce the exhaust gas temperature to 2°C-10°C or even lower, causing most of the water vapor in the exhaust gas to condense into liquid water, achieving deep dehydration. By utilizing centrifugal force and secondary eddy current, the separation efficiency of impurities and condensate is improved, ensuring exhaust cleanliness. The chilled water directly fills the hollow layer of the impeller, realizing an integrated design of cooling and separation, with high heat exchange efficiency and a compact and reliable system. The exhaust gas flowing to the second discharge pipe 44 also needs to be filtered by wire mesh 49. The fine wire mesh 49 captures larger droplets, which is highly efficient and has a low pressure drop. The system then enters the adsorption and recovery phase, which is carried out in two cyclical phases: The first stage is adsorption and recovery. The piston disc 9 moves forward, the hydraulic cylinder 11 works, and the piston disc 9 is pushed by the piston rod 10. The pressure in the space in front of the piston disc 9 in the piston tank 6 gradually decreases, the fourth check valve 15 opens, and the exhaust gas after deep dehydration is sucked into the piston tank 6 through the fifth pipe 16. At the same time, the pressure in the space behind the piston disc 9 gradually increases, the third check valve 13 opens, and the pre-treated recovered product is discharged through the fourth pipe 14. The second stage is compression adsorption. The piston disc 9 retracts, and the hydraulic cylinder 11 pulls the piston disc 9 through the piston rod 10. The pressure in the space in front of the piston disc 9 in the piston tank 6 gradually increases. The fourth check valve 15 closes and the second check valve 8 opens. The exhaust gas after compression and heating flows into the recovery tank 2 through the second pipe 7. The exhaust gas entering the recovery tank 2 flows upward and is adsorbed by the adsorption filter element 5. In this stage, the first check valve 4 opens, and the clean exhaust gas after being treated by the adsorption filter element 5 is discharged through the first pipe 3. The third check valve 13 opens, and the impurities flowing to the bottom of the recovery tank 2 are collected by the flow-gathering hopper 20 and sucked into the piston tank 6 through the third pipe 12 and the flow-gathering port 21. The reciprocating motion of the piston disc 9 driven by the hydraulic cylinder 11 alternates between negative pressure intake and positive pressure discharge in the piston tank 6, realizing the automated connection between the exhaust gas recovery and adsorption treatment process. During the retraction phase of the piston disc 9, the exhaust gas is compressed to raise its temperature, which helps to reduce the viscosity of the exhaust gas or change its phase state. Then, the high-pressure exhaust gas is sent to the recovery tank 2 for adsorption, which improves the saturation efficiency and treatment depth of the adsorption filter element 5. While the hydraulic rod pulls the piston disc 9 through the piston rod 10, the piston rod 10 drives the toothed plate 18 to move linearly in sync. The toothed plate 18 then drives the first gear 17, which transmits the rotational motion to the adsorption filter element 5 through the linkage shaft 19. During this process, the compressed exhaust gas flows towards the adsorption filter element 5, while the adsorption filter element 5 maintains a rapid rotation. The adsorption filter element 5 has a frustum-shaped structure. The centrifugal force generated during rotation throws the impurities adsorbed on its surface toward the inner wall of the recovery tank 2, realizing the active detachment and collection of impurities. By using centrifugal force to make impurities actively detach from the filter element surface, the separation efficiency is improved, the self-cleaning ability of the filter element is enhanced, clogging is avoided, and the service life is extended. While driving the adsorption filter element 5 to rotate rapidly, the linkage shaft 19 also drives the eccentric wheel 51 to rotate synchronously. The vibration generated by the rotation of the eccentric wheel 51 is then transmitted to the adsorption filter element 5 through the linkage shaft 19. The combined rotation and vibration motion of the adsorption filter element 5 is achieved through the same linkage shaft 19. The vibration helps to loosen the attached impurities and works in conjunction with the centrifugal force to improve the impurity separation efficiency. During the continuous rotation of the linkage shaft 19, its power is transmitted to the internal gear ring 24 through the meshing of the second gear 22 and the third gear 23. When the internal gear ring 24 rotates inside the adapter sleeve 25, it drives several fan blades 27 to rotate synchronously through the ring sleeve 26. The rotation of the fan blades 27 changes the flow direction of the compressed exhaust gas, making the flow direction of the exhaust gas and the rotation direction of the adsorption filter element 5 mutually opposite, increasing the contact probability and path length between the exhaust gas and the surface of the adsorption filter element 5, which helps to improve the adsorption efficiency. During rotation, the internal gear ring 24 drives multiple first magnetic pads 31 at its bottom to perform synchronous circular motion. When the first magnetic pad 31 rotates close to the second magnetic pad 32 fixed below, the mutual repulsion between them pushes the adapter sleeve 25, causing it to slide in the slide groove 28 via the slider. At the same time, the spring 30 is stretched, causing it to undergo elastic deformation. As the first magnetic pad 31 gradually moves away from the second magnetic pad 32, the mutual repulsion weakens, the spring 30 resets and releases its elastic force, pulling the adapter sleeve 25 and the internal gear ring 24 downward. This periodic reciprocating motion achieves dynamic adjustment of the height of the fan blade 27, that is, the distance between the fan blade 27 and the adsorption filter element 5 changes in real time with the rotation cycle. By using magnetic repulsion and the reset of the spring 30 to drive the adapter sleeve 25 to reciprocate, the height of the fan blade 27 is dynamically adjusted, further disturbing the airflow field, promoting full contact between the exhaust gas and the filter element, and improving the adsorption or filtration effect. The transmission of force through magnetic repulsion reduces mechanical wear and improves the smoothness and reliability of the movement.

[0041] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A tail gas recovery device for organosilicon production, comprising a first frame (1), characterized in that: A recovery tank (2) is fixedly installed on the inner side of the first frame (1). The top of the recovery tank (2) is connected to a first pipe (3). A first one-way valve (4) is installed on the first pipe (3). A frustum-shaped adsorption filter element (5) is embedded inside the recovery tank (2). The adsorption filter element (5) is filled with high-efficiency activated carbon. A piston tank (6) is installed at the bottom of the inner side of the first frame (1). The piston tank (6) is located below the recovery tank (2). The front end of the piston tank (6) slides... A piston rod (10) is connected to the piston rod (10). A hydraulic cylinder (11) is installed on the front end of the first frame (1). The output end of the hydraulic cylinder (11) is connected to the end of the piston rod (10). A piston disc (9) is fixedly connected to the other end of the piston rod (10). The piston disc (9) is slidably disposed inside the piston tank (6). One side of the piston tank (6) is connected to the bottom of the recovery tank (2) through the second pipe (7). A second check valve (8) is installed on the second pipe (7).

2. The tail gas recovery device for organosilicon production according to claim 1, characterized in that: The bottom of the inner wall of the recycling tank (2) is connected to a flow-gathering hopper (20). A flow-gathering port (21) is opened on the circumferential surface of the flow-gathering hopper (20). A No. 3 pipe (12) is connected to the side wall of the recycling tank (2) at the position corresponding to the flow-gathering port (21). A No. 3 one-way valve (13) is installed on the No. 3 pipe (12). The other end of the No. 3 pipe (12) is connected to the piston tank (6), and the connection position is located on the other side of the piston disc (9) relative to the No. 2 pipe (7). A No. 4 pipe (14) is also connected to the bottom of the recycling tank (2) at the position corresponding to the No. 3 pipe (12). A No. 4 one-way valve (15) is installed on the No. 4 pipe (14).

3. The tail gas recovery device for organosilicon production according to claim 2, characterized in that: The top of the inner side of the adsorption filter element (5) is fixedly connected to a linkage shaft (19). The bottom end of the linkage shaft (19) passes through the bottom of the recovery tank (2) and the second tube (7) and extends into the piston tank (6). The end fixed sleeve (52) is provided with a first gear (17). A notch is opened on the piston rod (10) corresponding to the position of the first gear (17). A toothed plate (18) is provided on the inner side wall of the notch. The toothed plate (18) meshes with the first gear (17).

4. The tail gas recovery device for organosilicon production according to claim 3, characterized in that: The linkage shaft (19) is fixed with a sleeve (52) connected to a second gear (22). The bottom of the inner side of the recycling tank (2) is rotatably connected to a third gear (23). The third gear (23) meshes with the second gear (22). An internal gear ring (24) also meshes with the third gear (23). A transition sleeve (25) is rotatably sleeved on the outer ring surface of the internal gear ring (24). The transition sleeve (25) is set inside the recycling tank (2). A ring sleeve (26) is connected to the top of the internal gear ring (24). Multiple fan blades (27) are fixed on the inner ring surface of the ring sleeve (26). These fan blades (27) are arranged in a ring array.

5. The tail gas recovery device for organosilicon production according to claim 4, characterized in that: The bottom of the inner side of the recycling tank (2) is connected to a fixed sleeve (52). The inner side wall of the fixed sleeve (52) is provided with multiple sliding grooves (28) arranged in a ring array. A slider is slidably connected in the sliding groove (28). The slider is connected to the outer ring surface of the ring sleeve (26). A spring (30) is connected to the bottom of the slider. The slider is elastically supported and connected to the bottom of the inner side of the sliding groove (28) through the spring (30). The bottom of the ring (26) is connected to multiple first magnetic pads (31) arranged in a ring array. The bottom of the inner side of the recycling tank (2) is connected to multiple second magnetic pads (32). The magnetic poles of the second magnetic pads (32) and the first magnetic pads (31) are the same.

6. The tail gas recovery device for organosilicon production according to claim 5, characterized in that: An eccentric wheel (51) is attached to a fixed sleeve (52) on the linkage shaft (19), and the eccentric wheel (51) is located inside the adsorption filter element (5).

7. The tail gas recovery device for organosilicon production according to claim 6, characterized in that: A third frame (41) is provided on one side of the first frame (1). A second separation tank (42) is embedded in the inner side of the third frame (41). A second air inlet pipe (43) and a second discharge pipe (44) are connected to the second separation tank (42) along the tangential direction. The second discharge pipe (44) is located above the second air inlet pipe (43). A second adapter pipe (45) is rotatably connected to the top of the inner side of the second separation tank (42). A second impeller (46) is fixedly sleeved (52) on the second adapter pipe (45). The second impeller (46) is set corresponding to the second air inlet pipe (43). The second impeller (46) has a hollow structure and is connected to the second adapter pipe (45). The top of the second adapter pipe (45) is rotatably connected to a first chilled water pipe (47), and its bottom is rotatably connected to a second chilled water pipe (48). The other end of the No. 2 discharge pipe (44) is connected to the other end of the No. 5 pipe (16), and the No. 5 pipe (16) is equipped with a No. 5 one-way valve.

8. The tail gas recovery device for organosilicon production according to claim 7, characterized in that: A wire mesh (49) is attached to a fixed sleeve (52) on the linkage shaft (19), and the wire mesh (49) is set between the second discharge pipe (44) and the second impeller (46).

9. A tail gas recovery device for organosilicon production according to claim 8, characterized in that: A third frame (41) is provided behind the second frame (33). A first separation tank (34) is embedded in the inner side of the third frame (41). The first separation tank (34) is connected to a first air inlet pipe (35) and a first exhaust pipe (36), and the first exhaust pipe (36) is located above the first air inlet pipe (35). A first transfer pipe (37) is rotatably connected to the top of the inner side of the first separation tank (34). The first transfer pipe (37) is connected to... A first impeller (38) is connected to a first air inlet pipe (35) fixed sleeve (52). The first impeller (38) has a hollow structure and is connected to a first transfer pipe (37). The first circulating water pipe (39) is rotatably connected to the inner side of the top end of the first transfer pipe (37). The second circulating water pipe (40) is rotatably connected to the inner side of the bottom end of the first transfer pipe (37). The other end of the first discharge pipe (36) is connected to the second air inlet pipe (43) and a sixth pipe (50) is connected.

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