An integrated fluidized bed zeolite molecular sieve adsorption-desorption device

Abstract

This invention relates to the field of waste gas treatment technology, specifically an integrated fluidized bed zeolite molecular sieve adsorption-desorption device. It includes a circulation pipeline, which is composed of a horizontally arranged desorption pipe, an L-shaped connecting pipe connected to one end of the desorption pipe, and an inclined adsorption pipe connected to the lower end of the L-shaped connecting pipe, connected in sequence. The circulation pipeline is filled with zeolite particles. A vertical feeding pipe is provided on one side of the circulation pipeline, with the lower end of the adsorption pipe connected to the lower part of the feeding pipe. Through a hydraulic drive structure that synchronously links the sealing plate structure and the speed-changing structure, the number of adsorption chambers opened and the feeding speed of the feeding pipe are dynamically adapted to the waste gas intake volume. This ensures precise matching between the zeolite particle circulation volume and the waste gas adsorption requirements, solving the problem that the fixed parameters of existing devices cannot adapt to air volume fluctuations, easily leading to a decrease in adsorption efficiency. This ensures that the device maintains a stable waste gas treatment effect under varying air intake conditions.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to an integrated fluidized bed zeolite molecular sieve adsorption-desorption device. Background Technology

[0002] Volatile organic compounds (VOCs) are major pollutants in industrial waste gas, posing significant threats to the ecological environment and human health. Their treatment has become a key focus in the environmental protection field, and fluidized bed adsorption devices, with their characteristic of full contact between the adsorbent and the waste gas, have become one of the mainstream treatment equipment forms. In existing technologies, fluidized bed zeolite molecular sieve adsorption-desorption devices often employ fixed structures and parameter settings. For example, some devices achieve fluidized desorption of zeolite powder through a stirring mechanism and a hot air conveying system. While this improves desorption uniformity, the inlet pipe is only manually controlled by a valve, making it impossible to dynamically adjust adsorption conditions based on the waste gas flow rate. This makes it difficult to adapt to real-time fluctuations in the inlet volume. In actual industrial production, the waste gas inlet volume often fluctuates due to factors such as production load adjustments and process switching. When the inlet volume exceeds the design rating, the existing zeolite molecular sieve adsorption capacity cannot match it in time, resulting in insufficient contact time between the waste gas and the adsorbent, a decrease in removal rate, and difficulty in meeting emission standards. Existing adjustment methods, such as adding manual valve opening, suffer from response lag and low adjustment precision, failing to achieve a dynamic balance between inlet volume and adsorption filtration effect. Therefore, an integrated fluidized bed zeolite molecular sieve adsorption-desorption device is proposed, which can automatically adjust the adsorption filtration effect according to the waste gas inlet volume, ensuring that the device always maintains a stable and efficient waste gas treatment efficiency. Summary of the Invention

[0003] To address the problems in the existing technology, this invention provides an integrated fluidized bed zeolite molecular sieve adsorption-desorption device that can automatically adjust the adsorption and filtration effect according to the amount of waste gas entering the device, ensuring that the device always maintains a stable and efficient waste gas treatment efficiency.

[0004] The technical solution adopted by this invention to solve its technical problem is an integrated fluidized bed zeolite molecular sieve adsorption-desorption device, including a circulation pipe. The circulation pipe is composed of a horizontally arranged desorption pipe, an L-shaped connecting pipe connected to one end of the desorption pipe, and an inclined adsorption pipe connected to the lower end of the L-shaped connecting pipe. The circulation pipe is filled with zeolite particles. A vertical feed pipe is provided on one side of the circulation pipe. The lower end of the adsorption pipe is connected to the lower part of the feed pipe, and the end of the desorption pipe away from the L-shaped connecting pipe is connected to the upper part of the feed pipe. An air inlet pipe and an air outlet pipe are provided on the outside of the adsorption pipe and are connected to its interior. The adsorption pipe is divided into several chambers by several sets of ventilation baffles facing the air inlet pipe. The adsorption pipe is provided with a sealing plate structure for controlling the opening degree of each chamber and the L-shaped connecting pipe. A speed-changing structure for controlling the feeding speed is provided above the feed pipe. A hydraulic drive structure is provided in the air inlet pipe to drive the sealing plate structure and the speed-changing structure to work synchronously according to the air volume.

[0005] Specifically, the sealing plate structure includes a slot on one side of the adsorption tube, a sealing plate is slidably connected in the slot, and the side of the sealing plate away from the air inlet pipe is fixedly connected to the outer wall of the adsorption tube by a first hydraulic telescopic rod.

[0006] Specifically, the feeding pipe is equipped with a vertically arranged spiral feeding rod. The spiral blades of the spiral feeding rod are provided with several sets of screen holes. The bottom of the feeding pipe is equipped with a vibrating screening structure. The upper end of the feeding pipe is fixedly connected to a housing. The output shaft of the spiral feeding rod passes through the housing and is rotatably connected to the housing. The housing is equipped with a speed-changing structure for controlling the rotation speed of the spiral feeding rod.

[0007] Specifically, the speed change structure includes a friction disc fixed horizontally on the upper end of the output shaft of the screw feeder, a drive motor fixedly connected to one side of the housing, the output end of the drive motor passing through the housing and fixedly connected to a horizontally arranged spline shaft, a spline sleeve slidably connected to the outside of the spline shaft, and a friction wheel that rubs and drives the friction disc at the end of the spline sleeve away from the spline shaft. The end of the friction wheel away from the spline sleeve is connected to a second hydraulic telescopic rod via a rotating bearing. The fixed end of the second hydraulic telescopic rod is fixedly connected to the inner wall of the housing, and the second hydraulic telescopic rod is connected to the hydraulic drive structure.

[0008] Specifically, the hydraulic drive structure includes a swing plate vertically installed inside the air inlet pipe. The upper part of both ends of the swing plate is connected to a fixed shaft, and the two ends of the fixed shaft are rotatably connected to the inner wall of the air inlet pipe. Several sets of horizontally arranged hydraulic cylinders are fixedly connected inside the air inlet pipe. The fixed end of the hydraulic cylinder is fixedly connected to the inner wall of the air inlet pipe through the mounting plate. The output end of the hydraulic cylinder is in pressure contact with the side of the swing plate away from the desorption pipe. A compression spring is fixedly connected between the fixed end of the hydraulic cylinder and the swing plate. The upper end of the air inlet pipe is equipped with a liquid outlet connector that is connected to several sets of hydraulic cylinders. The liquid outlet connector is connected to the first hydraulic telescopic rod through the first pipeline, and the liquid outlet connector is connected to the second hydraulic telescopic rod through the second pipeline.

[0009] Specifically, the vibrating screen structure includes several sets of fan-shaped screen plates circumferentially distributed at the bottom of the feeding pipe. Several sets of circumferentially distributed vertical positioning sliders are fixedly connected to the inner wall of the feeding pipe. Support rings are fixedly connected to the lower part of the positioning sliders. Vertical grooves adapted to the positioning sliders are opened on the outer side of the fan-shaped screen plates. The positioning sliders are embedded in the grooves and slidably connected to the grooves. Several sets of fan-shaped screen plates are slidably connected to the lower end of the spiral feeding rod. The lower end of the screw feed rod is fixedly connected to a horizontally set drive shaft. One end of the drive shaft is rotatably connected to a squeeze roller. The squeeze roller is positioned corresponding to the lower part of the screw blades of the screw feed rod. The squeeze roller is in squeezing contact with the lower surface of the fan-shaped screen plate. The lower end of the feed pipe is detachably connected to a collection pipe through a flange.

[0010] Specifically, the outer side of the desorption pipe is equipped with a hot air connecting pipe and an exhaust pipe that communicate with its interior.

[0011] Specifically, the outer side of the circulation pipe is fixedly connected to a support frame.

[0012] The beneficial effects of this invention are: The integrated fluidized bed zeolite molecular sieve adsorption-desorption device of the present invention achieves dynamic adaptation of the number of adsorption chambers and the feeding speed of the feeding pipe to the exhaust gas intake through a hydraulically driven structure that synchronously links the sealing plate structure and the speed-changing structure. This allows for precise matching of the zeolite particle circulation volume with the exhaust gas adsorption requirements, solving the problem that the fixed parameters of existing devices cannot adapt to air volume fluctuations and easily lead to a decrease in adsorption efficiency. This ensures that the device maintains a stable exhaust gas treatment effect under varying air intake conditions.

[0013] The integrated fluidized bed zeolite molecular sieve adsorption-desorption device of the present invention is divided into several chambers by ventilation baffles inside the adsorption tube. It adopts a zeolite-stage utilization method with priority circulation in the front chamber and on-demand opening of the rear chamber. This method is adapted to the mass transfer law of high pollutant concentration at the front end of the waste gas adsorption, reduces the ineffective circulation of zeolite particles, effectively reduces the operating energy consumption of the device while ensuring the waste gas adsorption efficiency, and improves the overall utilization efficiency of zeolite particles.

[0014] The integrated fluidized bed zeolite molecular sieve adsorption-desorption device of the present invention uses a vibrating screening structure to achieve self-vibration of the fan-shaped screen plate through the linkage of the extrusion roller and the spiral feeding rod, eliminating the need for an additional vibration power source and simplifying the structural design. Moreover, screening and feeding are seamlessly connected, and the position of the fan-shaped screen plate is aligned with the feeding position at the bottom of the spiral blade. After the zeolite particles move up with the screen plate, they can be directly scooped up by the spiral blade without the need for additional power to push them, which greatly improves the feeding efficiency of zeolite particles and enhances the material flow efficiency of the device. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an isometric view of the present invention; Figure 2 This is an isometric view of the circulating pipeline of the present invention; Figure 3 for Figure 2 Enlarged view of region A; Figure 4 for Figure 2 Enlarged view of region B; Figure 5 This is a schematic cross-sectional view of the air inlet duct of the present invention; Figure 6 This is a schematic cross-sectional view of the feeding pipe of the present invention; Figure 7 for Figure 6 Enlarged view of region C; Figure 8 This is a schematic diagram of the structure of the fan-shaped sieve plate of the present invention; Figure 9 for Figure 8 Enlarged view of region D; In the diagram: 1. Desorption pipe; 2. L-shaped connecting pipe; 3. Adsorption pipe; 4. Feeding pipe; 5. Air inlet pipe; 6. Air outlet pipe; 7. Ventilation baffle; 8. Chamber; 9. Slot; 10. Sealing plate; 11. First hydraulic telescopic rod; 12. Spiral feeding rod; 13. Spiral blade; 14. Screen hole; 15. Shell; 16. Friction disc; 17. Drive motor; 18. Splined shaft; 19. Splined sleeve; 20. Friction wheel; 21. 21. Rotating bearing; 22. Second hydraulic telescopic rod; 23. Swing plate; 24. Fixed shaft; 25. Hydraulic cylinder; 26. Mounting plate; 27. Compression spring; 28. Liquid outlet connector; 29. ​​First pipeline; 30. Second pipeline; 31. Fan-shaped screen plate; 32. Positioning slider; 33. Slide groove; 34. Drive shaft; 35. Compression roller; 36. Collection pipe; 37. Hot air connecting pipe; 38. Exhaust pipe; 39. Support frame. Detailed Implementation

[0017] 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.

[0018] To facilitate automatic adjustment of the adsorption and filtration effect based on the intake volume of exhaust gas, and to ensure that the device maintains a stable and efficient exhaust gas treatment capacity, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 As shown, the integrated fluidized bed zeolite molecular sieve adsorption-desorption device of the present invention includes a circulation pipeline, which is composed of a horizontally arranged desorption pipe 1, an L-shaped connecting pipe 2 connected to one end of the desorption pipe 1, and an inclined adsorption pipe 3 connected to the lower end of the L-shaped connecting pipe 2 in sequence. The circulation pipeline is filled with zeolite particles. A vertical feed pipe 4 is provided on one side of the circulation pipeline. The lower end of the adsorption pipe 3 is connected to the lower part of the feed pipe 4, and the end of the desorption pipe 1 away from the L-shaped connecting pipe 2 is connected to the upper part of the feed pipe 4. An air inlet pipe 5 and an air outlet pipe 6 are provided on the outside of the adsorption pipe 3 and are connected to its interior. The adsorption pipe 3 is divided into several chambers 8 by several sets of ventilation baffles 7 facing the air inlet pipe 5. The adsorption pipe 3 is provided with a sealing plate structure for controlling the opening degree of each chamber 8 and the L-shaped connecting pipe 2. A speed-changing structure for controlling the feeding speed is provided above the feed pipe 4. A hydraulic drive structure is provided in the air inlet pipe 5 to drive the sealing plate structure and the speed-changing structure to work synchronously according to the air volume.

[0019] In operation, the inlet pipe 5 is connected to the exhaust gas inlet pipe. The exhaust gas enters the adsorption pipe 3 through the inlet pipe 5, where it comes into full contact with the zeolite particles. The zeolite particles adsorb and filter the pollutants in the exhaust gas, and the purified exhaust gas is discharged through the outlet pipe 6, achieving basic purification treatment of industrial exhaust gas. After the zeolite particles in the adsorption pipe 3 adsorb pollutants, the feeding pipe 4 conveys the zeolite particles from the lower end of the adsorption pipe 3 upwards into the desorption pipe 1 for desorption and regeneration treatment. The regenerated zeolite particles flow back to the adsorption pipe 3 through the L-shaped connecting pipe 2, completing the closed-loop circulation of the zeolite particles. This eliminates the need for frequent manual replacement of the adsorbent, improving the continuous operation capability of the device. When the exhaust gas flows in the inlet pipe 5, the hydraulic drive structure in the inlet pipe 5 is driven synchronously. The hydraulic drive structure synchronously drives the sealing plate structure in the adsorption pipe 3 according to the exhaust gas intake volume. When the exhaust gas intake volume is small, the sealing plate structure only opens a small number of chambers 8, and the zeolite particles circulate only from a small number of chambers 8, allowing for on-demand circulation at low air volumes. Opening chamber 8 reduces ineffective circulation of zeolite particles and lowers the energy consumption of the device. When the exhaust gas intake is high, the hydraulic drive structure drives the sealing plate structure to open more chambers 8. By increasing the number of chambers 8 open, the flow rate and circulation volume of zeolite particles in the adsorption tube 3 are increased, ensuring that the large flow of exhaust gas comes into contact with a sufficient amount of zeolite particles, and avoiding a decrease in purification efficiency due to insufficient adsorbent. While adjusting the sealing plate structure, the hydraulic drive structure simultaneously drives the speed-changing structure of the feeding pipe 4. The higher the exhaust gas intake, the higher the feeding speed of the feeding pipe 4 is driven by the speed-changing structure. The lower the exhaust gas intake, the lower the feeding speed of the feeding pipe 4 is driven by the speed-changing structure. This achieves coordination between the feeding speed and the circulation volume of zeolite particles, ensuring that the replenishment rate of zeolite particles in the adsorption tube 3 matches the consumption rate. This ensures that the adsorption and purification capacity of the device is always adapted to the exhaust gas intake, ensuring that the device can maintain a stable and efficient exhaust gas treatment effect even under fluctuating intake volume conditions, and improving the integration and automation level of the device.

[0020] To enable the number of chambers 8 to be opened to dynamically adjust with the air intake, for example, such as Figure 3 , Figure 4 As shown, the present invention also includes a sealing plate structure comprising a slot 9 disposed on one side of the adsorption tube 3, a sealing plate 10 being slidably connected in the slot 9, and the side of the sealing plate 10 away from the air inlet pipe 5 being fixedly connected to the outer wall of the adsorption tube 3 via a first hydraulic telescopic rod 11.

[0021] During use, the hydraulic drive structure inside the exhaust gas inlet pipe 5 outputs hydraulic power according to the exhaust gas intake volume, which is transmitted to the first hydraulic telescopic rod 11. The first hydraulic telescopic rod 11 drives the sealing plate 10 to slide along the slot 9. The lower the exhaust gas intake volume, the smaller the extension of the first hydraulic telescopic rod 11, and the sealing plate 10 only opens a small number of chambers 8. The higher the exhaust gas intake volume, the greater the extension of the first hydraulic telescopic rod 11, and the sealing plate 10 slides along the slot 9 to open more chambers 8. By driving the sealing plate 10 to slide along the slot 9 through the first hydraulic telescopic rod 11, the number of chambers 8 opened can be flexibly adjusted. The number of chambers 8 opened is dynamically adjusted with the intake volume, so that the amount of zeolite particles participating in the circulation in the adsorption pipe 3 is matched with the amount of exhaust gas, thereby improving the targeting and efficiency of exhaust gas adsorption.

[0022] To achieve a match between the feeding speed and the exhaust gas intake volume, for example, such as Figure 6 As shown, the present invention also includes a vertically arranged spiral feeding rod 12 inside the feeding pipe 4, a plurality of sets of screen holes 14 on the spiral blades 13 of the spiral feeding rod 12, a vibrating screening structure at the bottom of the feeding pipe 4, a housing 15 fixedly connected to the upper end of the feeding pipe 4, the output shaft of the spiral feeding rod 12 passing through the housing 15 and rotatably connected to the housing 15, and a speed-changing structure for controlling the rotational speed of the spiral feeding rod 12 inside the housing 15.

[0023] During use, the zeolite particles that have completed the adsorption of waste gas in the adsorption tube 3 enter the feeding tube 4. The spiral feeding rod 12 in the feeding tube 4 rotates to transport the zeolite particles upward. The screen holes 14 on the spiral blades 13 rotate with the spiral feeding rod 12 to assist in the uniform transport of the zeolite particles. At the same time, the screen holes 14 facilitate the falling of debris generated by the zeolite particles during the movement into the vibrating screening structure below. During the upward transport of the zeolite particles, the debris is screened and cleaned by the vibrating screening structure. The hydraulic drive structure inside the air inlet pipe 5 outputs hydraulic power according to the exhaust gas intake volume. The speed change structure automatically adjusts the rotation speed of the screw feeder 12 according to the hydraulic power. The higher the exhaust gas intake volume, the higher the rotation speed of the screw feeder 12 and the faster the feeding speed; the lower the exhaust gas intake volume, the lower the rotation speed of the screw feeder 12 and the slower the feeding speed. This achieves the matching of feeding speed and exhaust gas intake volume, ensuring that the replenishment speed of zeolite particles matches the adsorption consumption speed, and maintaining the stable adsorption and purification capacity of the device.

[0024] To achieve automatic reduction of feeding speed under low airflow conditions without manual intervention, for example, such as Figure 6 , Figure 7As shown, the present invention also includes a speed-changing structure comprising a friction disc 16 horizontally fixed to the upper end of the output shaft of the screw feed rod 12, a drive motor 17 fixedly connected to one side of the housing 15, the output end of the drive motor 17 passing through the housing 15 and fixedly connected to a horizontally arranged spline shaft 18, a spline sleeve 19 slidably connected to the outside of the spline shaft 18, and a friction wheel 20 that is frictionally driven by the friction disc 16 fixedly connected to the end of the spline sleeve 19 away from the spline shaft 18; The end of the friction wheel 20 away from the spline sleeve 19 is connected to a second hydraulic telescopic rod 22 via a rotating bearing 21. The fixed end of the second hydraulic telescopic rod 22 is fixedly connected to the inner wall of the housing 15, and the second hydraulic telescopic rod 22 is connected to the hydraulic drive structure.

[0025] In operation, the drive motor 17 synchronously drives the spline shaft 18 to rotate. The spline shaft 18 drives the friction wheel 20 to rotate synchronously through the spline sleeve 19. The friction wheel 20 and the friction disc 16 are driven by friction, which drives the spiral feed rod 12 to rotate and feed the zeolite particles. The hydraulic drive structure in the air inlet pipe 5 outputs hydraulic power according to the exhaust gas intake and transmits it to the second hydraulic telescopic rod 22, driving the second hydraulic telescopic rod 22 to perform telescopic movements. When the exhaust gas intake increases, the hydraulic drive structure drives the second hydraulic telescopic rod 22 to shorten, causing the spline sleeve 19 to slide along the spline shaft 18, thereby pushing the friction wheel 20 toward the center of the friction disc 16. The friction wheel 20 moves to reduce the contact friction radius between the friction wheel 20 and the friction disc 16, thereby increasing the rotational speed of the screw feed rod 12 and simultaneously increasing the feeding speed of zeolite particles. When the exhaust gas intake decreases, the driving force of the hydraulic drive structure decreases, the second hydraulic telescopic rod 22 automatically resets, and drives the spline sleeve 19 to slide in the opposite direction along the spline shaft 18. The friction wheel 20 moves to the outside of the friction disc 16, increasing the contact friction diameter between the friction wheel 20 and the friction disc 16, thereby reducing the rotational speed of the screw feed rod 12 and simultaneously slowing down the feeding speed of zeolite particles. This achieves automatic reduction of the feeding speed under low air volume without manual intervention, improving the automation level of the device.

[0026] For example, such as Figure 5 As shown, the present invention also includes a hydraulic drive structure comprising a swing plate 23 vertically disposed inside the air inlet pipe 5, wherein a fixed shaft 24 is connected to the upper part of both ends of the swing plate 23, and the two ends of the fixed shaft 24 are rotatably connected to the inner wall of the air inlet pipe 5. Several sets of horizontally arranged hydraulic cylinders 25 are fixedly connected inside the air inlet pipe 5. The fixed end of the hydraulic cylinder 25 is fixedly connected to the inner wall of the air inlet pipe 5 through the mounting plate 26. The output end of the hydraulic cylinder 25 is in pressure contact with the side of the swing plate 23 away from the desorption pipe 1. A compression spring 27 is fixedly connected between the fixed end of the hydraulic cylinder 25 and the swing plate 23. The upper end of the air inlet pipe 5 is provided with a liquid outlet connector 28 that communicates with several sets of hydraulic cylinders 25. The liquid outlet connector 28 is connected to the first hydraulic telescopic rod 11 through the first pipe 29 and to the second hydraulic telescopic rod 22 through the second pipe 30.

[0027] When in use, when exhaust gas enters the air inlet pipe 5, the airflow pushes the swing plate 23 inside the air inlet pipe 5 to rotate around the fixed shaft 24. The larger the air intake, the larger the rotation angle of the swing plate 23, and the smaller the air intake, the smaller the rotation angle of the swing plate 23. When the swing plate 23 rotates, it forms a squeeze on the output end of the hydraulic cylinder 25. After being squeezed, the hydraulic cylinder 25 generates hydraulic power, and the squeeze spring 27 deforms synchronously with the squeezing action of the swing plate 23. The hydraulic power generated by the hydraulic cylinder 25 is collected through the liquid outlet joint 28, and then transmitted to the first hydraulic telescopic rod 11 through the first pipeline 29 and to the second hydraulic telescopic rod 22 through the second pipeline 30, respectively, to ensure that the adjustment actions of the sealing plate structure and the speed change structure are triggered synchronously, so as to realize the linkage matching between the number of chambers 8 opened and the feeding speed, and ensure that the zeolite particle circulation volume in the adsorption tube 3 is highly compatible with the exhaust gas intake volume. When the exhaust gas intake volume decreases or stops, the swing plate 23 resets under the rebound force of the compression spring 27, the hydraulic cylinder 25 loses its compressive force and resets, and the hydraulic power returns synchronously. The first hydraulic telescopic rod 11 and the second hydraulic telescopic rod 22 reset accordingly with the change in hydraulic power. No additional reset power source is required, which simplifies the structural design and enables the device to dynamically adapt to changes in intake volume in both directions. When the intake volume increases, the processing capacity is automatically increased, and when it decreases, the processing capacity is automatically reduced, without the need for manual intervention. After the swing plate 23 resets, it blocks the reverse flow of gas in the adsorption tube 3, ensuring the forward flow of gas in the air inlet pipe 5 and avoiding problems such as zeolite particle adsorption failure and reduced exhaust gas treatment efficiency caused by gas backflow.

[0028] To improve the feeding efficiency of zeolite particles and prevent particle accumulation at the screen plate, for example, such as... Figure 8 , Figure 9As shown, the present invention also includes a vibrating screening structure comprising several sets of fan-shaped screen plates 31 circumferentially distributed at the lower part of the feeding pipe 4, several sets of circumferentially distributed vertical positioning sliders 32 fixedly connected to the inner wall of the feeding pipe 4, a support ring fixedly connected to the lower part of the positioning sliders 32, a vertical groove 33 adapted to the positioning sliders 32 being opened on the outer side of the fan-shaped screen plates 31, the positioning sliders 32 being embedded in the grooves 33 and slidably connected to the grooves 33, several sets of fan-shaped screen plates 31 being slidably connected to the lower end of the spiral feeding rod 12; a horizontally arranged drive shaft 34 is fixedly connected to the lower end of the spiral feeding rod 12, one end of the drive shaft 34 is rotatably connected to a squeeze roller 35, the squeeze roller 35 is corresponding to the lower part of the spiral blades 13 of the spiral feeding rod 12, the squeeze roller 35 is in extrusive contact with the lower surface of the fan-shaped screen plates 31, and a collecting pipe 36 is detachably connected to the lower end of the feeding pipe 4 via a flange.

[0029] In use, zeolite particles enter the lower part of the feeding pipe 4 and fall onto the fan-shaped screen plate 31. The spiral feeding rod 12 rotates synchronously with the drive shaft 34, and the extrusion roller 35 of the drive shaft 34 rotates. When the extrusion roller 35 rotates to a certain set of fan-shaped screen plates 31, it extrudes the lower surface of the fan-shaped screen plate 31 and pushes it upward along the positioning slider 32. The upward position of the fan-shaped screen plate 31 matches the feeding position of the lowest part of the spiral blade 13. After the zeolite particles move upward with the screen plate, they can be directly scooped up by the spiral blade 13 without additional power pushing, which greatly improves the feeding efficiency of zeolite particles and avoids the accumulation of particles at the screen plate. After the extrusion roller 35 continues to rotate and leaves the fan-shaped screen plate 31, the fan-shaped screen plate 31 disappears. The pressing and resetting process involves the extrusion rollers 35 pressing the circumferentially distributed fan-shaped screen plates 31 one by one, causing the fan-shaped screen plates 31 to continuously vibrate up and down. This eliminates the need for an additional vibration power source, simplifying the structural design while ensuring that the fan-shaped screen plates 31 produce a continuous and uniform vibration effect, facilitating the rapid separation of debris generated by friction between the zeolite particles and qualified particles. During the up-and-down vibration of the fan-shaped screen plates 31, debris in the particles falls through the screen holes 14 into the collection pipe 36, completing the debris collection. The screening process separates debris from qualified particles, ensuring that the zeolite particles entering the feeding stage have a uniform particle size and preventing debris from affecting the subsequent adsorption effect. The detachable collection pipe 36 facilitates the periodic cleaning of the collected debris.

[0030] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a hot air connecting pipe 37 and an exhaust pipe 38 connected to the outside of the desorption pipe 1.

[0031] In use, the hot air connecting pipe 37 is connected to an external hot air source. Hot air is continuously introduced into the desorption pipe 1 through the hot air connecting pipe 37, making full contact with the zeolite particles in the desorption pipe 1. The hot air can heat and desorb the zeolite particles that have adsorbed pollutants, causing the pollutants adsorbed by the zeolite particles to be desorbed by heat, thereby regenerating the zeolite particles. The zeolite particles can be recycled to participate in the adsorption of waste gas, eliminating the need for frequent replacement of the adsorbent and reducing the operating cost of the device. After the hot air completes the heating and desorption in the desorption pipe 1, it carries the desorbed pollutants and is discharged from the exhaust pipe 38, avoiding the accumulation of pollutant-containing hot air in the pipe and affecting the desorption effect of the zeolite particles. At the same time, it realizes the directional flow of hot air, making the particles in the desorption pipe 1 heated evenly and improving the desorption and regeneration efficiency of the zeolite particles.

[0032] For example, such as Figure 1 As shown, the present invention also includes a support frame 39 fixedly connected to the outside of the circulation pipe.

[0033] During use, the overall stability of the device can be ensured by relying on the support frame 39.

[0034] In use, the inlet pipe 5 of the device is connected to the exhaust gas inlet pipe, and the hot air connecting pipe 37 outside the desorption pipe 1 is connected to an external hot air source. The support frame 39 on the outside of the device can ensure the overall stability of the device and provide a basic guarantee for the stable operation of the device. The exhaust gas enters the adsorption pipe 3 through the inlet pipe 5. The exhaust gas comes into full contact with the zeolite particles filled in the circulation pipe in the adsorption pipe 3. The zeolite particles adsorb and filter the pollutants in the exhaust gas. The purified exhaust gas is discharged through the outlet pipe 6, realizing the basic purification treatment of industrial exhaust gas. The zeolite particles that have completed the adsorption of exhaust gas in the adsorption pipe 3 enter the feeding pipe 4. The spiral feeding rod 12 in the feeding pipe 4 rotates to transport the zeolite particles upward. The spiral blades 13 are loaded onto the feed pipe. The sieve holes 14 rotate with the screw feed rod 12, assisting in the uniform conveying of zeolite particles. Simultaneously, the sieve holes 14 facilitate the falling of debris generated during the movement of the zeolite particles into the vibrating screening structure below. As the zeolite particles are conveyed upwards, they pass through the vibrating screening structure, completing the initial screening and cleaning of debris, ensuring the uniformity of the zeolite particle conveying. After entering the lower part of the feed pipe 4, the zeolite particles fall onto the fan-shaped sieve plate 31. The rotation of the screw feed rod 12 drives the drive shaft 34 to rotate synchronously. The drive shaft 34 drives the extrusion roller 35 to rotate. When the extrusion roller 35 rotates to a certain set of fan-shaped sieve plates 31, it extrudes the lower surface of the fan-shaped sieve plate 31 and pushes it upwards along the positioning slider 32. The upward movement of the fan-shaped sieve plate 31... The feed position is aligned with the lowest part of the spiral blade 13. As the zeolite particles move up with the screen plate, they can be directly scooped up by the spiral blade 13 without additional power, greatly improving the feeding efficiency of the zeolite particles and preventing particles from accumulating at the screen plate. After the extrusion roller 35 continues to rotate and leaves the fan-shaped screen plate 31, the fan-shaped screen plate 31 loses pressure and resets. The extrusion roller 35 extrudes the circumferentially distributed fan-shaped screen plates 31 one by one, causing the fan-shaped screen plates 31 to continuously vibrate up and down. No additional vibration power source is required. During the up and down vibration of the fan-shaped screen plate 31, the debris in the particles falls through the screen holes 14 to the collection pipe 36, completing the debris collection. The feed pipe 4 conveys the zeolite particles at the lower end of the adsorption pipe 3 upward into the desorption pipe 1. For desorption and regeneration, hot air is continuously introduced into the desorption tube 1 through the hot air connecting pipe 37, making full contact with the zeolite particles in the desorption tube 1. The hot air can heat and desorb the zeolite particles that have adsorbed pollutants, causing the adsorbed pollutants to be desorbed by heat, thus regenerating the zeolite particles. This eliminates the need for frequent replacement of the adsorbent, reducing the operating cost of the device. After the hot air completes the heating and desorption in the desorption tube 1, it carries the desorbed pollutants and is discharged from the exhaust pipe 38, preventing the accumulation of pollutant-containing hot air in the pipe from affecting the desorption effect of the zeolite particles. The regenerated zeolite particles are returned to the adsorption tube 3 through the L-shaped connecting pipe 2, completing the closed-loop circulation of the zeolite particles. This eliminates the need for frequent manual replacement of the adsorbent, further improving the continuous operation capability of the device.During the entire waste gas treatment process, the waste gas flows within the inlet duct 5, synchronously driving the hydraulic drive structure within the inlet duct 5. The waste gas entering the inlet duct 5 pushes the swing plate 23 within the inlet duct 5 to rotate around the fixed axis 24. The larger the airflow, the larger the rotation angle of the swing plate 23; the smaller the airflow, the smaller the rotation angle of the swing plate 23. When the swing plate 23 rotates, it compresses the output end of the hydraulic cylinder 25. The hydraulic cylinder 25 generates hydraulic power after being compressed, and the compression spring 27 deforms synchronously with the compression action of the swing plate 23. The hydraulic power generated by the hydraulic cylinder 25 is collected through the liquid outlet joint 28 and then transmitted to the first hydraulic telescopic rod 11 via the first pipeline 29 and to the second hydraulic telescopic rod 22 via the second pipeline 30, ensuring that the adjustment actions of the sealing plate structure and the speed-changing structure are triggered synchronously. This achieves a linkage match between the number of chambers 8 opened and the feeding speed, ensuring a high degree of compatibility between the zeolite particle circulation volume in the adsorption tube 3 and the waste gas inlet volume.

[0035] The hydraulic drive structure drives the sealing plate structure inside the adsorption pipe 3 according to the exhaust gas intake volume. The first hydraulic telescopic rod 11 drives the sealing plate 10 to slide along the slot 9. When the exhaust gas intake volume is small, the extension of the first hydraulic telescopic rod 11 is smaller, and the sealing plate 10 only opens a small number of chambers 8. The zeolite particles only circulate from a small number of chambers 8. Under low air volume, chambers 8 are opened as needed, reducing the ineffective circulation of zeolite particles and reducing the energy consumption of the device. When the exhaust gas intake volume is high, the extension of the first hydraulic telescopic rod 11 is larger, and the sealing plate 10 only opens a small number of chambers 8. More chambers 8 are opened by sliding along the slot 9. The adsorption tube 3 is divided into several groups of chambers 8 by ventilation baffles 7. The zeolite is utilized in a graded manner by prioritizing circulation in the front chamber 8 and opening the rear chamber 8 as needed. This method is suitable for adsorbing high-concentration pollutants at the front end of the exhaust gas, further reducing the ineffective circulation of zeolite particles. At the same time, by increasing the number of chambers 8 that are opened, the flow rate and circulation volume of zeolite particles in the adsorption tube 3 are increased, ensuring that large flow of exhaust gas comes into contact with a sufficient amount of zeolite particles and avoiding a decrease in purification efficiency due to insufficient adsorbent.

[0036] The hydraulic drive structure simultaneously drives the speed-changing structure of the feeding pipe 4 while adjusting the sealing plate structure. Hydraulic power is transmitted to the second hydraulic telescopic rod 22, driving it to extend and retract. The drive motor 17 drives the splined shaft 18 to rotate. The splined shaft 18 drives the friction wheel 20 to rotate synchronously via the splined sleeve 19. The friction wheel 20 and the friction disc 16 drive the spiral feed rod 12 to rotate. When the exhaust gas intake increases, the second hydraulic telescopic rod 22 shortens, causing the splined sleeve 19 to slide along the splined shaft 18, thereby pushing the friction wheel 20 towards the center of the friction disc 16, reducing the contact friction radius between the friction wheel 20 and the friction disc 16, thus increasing the speed of the spiral feed rod 12 and simultaneously increasing the feeding speed of the zeolite particles. When the exhaust gas intake decreases, the driving force of the hydraulic drive structure decreases, and the second hydraulic telescopic rod 22 automatically resets, driving the splined sleeve 19 to rotate. 9 slides in the opposite direction along the spline shaft 18, and the friction wheel 20 moves to the outside of the friction disk 16, increasing the contact friction diameter between the friction wheel 20 and the friction disk 16. This reduces the rotational speed of the screw feed rod 12 and slows down the feeding speed of the zeolite particles. This achieves automatic reduction of the feeding speed under low air volume without manual intervention, improving the automation level of the device. The higher the exhaust gas intake volume, the higher the feeding speed of the feed pipe 4 driven by the speed change structure. The lower the exhaust gas intake volume, the lower the feeding speed of the feed pipe 4. This achieves precise matching between the feeding speed and the zeolite particle circulation volume, ensuring that the replenishment speed of the zeolite particles in the adsorption tube 3 matches the consumption speed. This ensures that the adsorption and purification capacity of the device is always adapted to the exhaust gas intake volume, ensuring that the device can maintain a stable and efficient exhaust gas treatment effect even under fluctuating intake volume conditions, thus improving the integration and automation level of the device.

[0037] When the exhaust gas intake volume decreases or stops, the swing plate 23 resets under the rebound force of the compression spring 27, the hydraulic cylinder 25 loses its compression force and resets, and the hydraulic power returns synchronously. The first hydraulic telescopic rod 11 and the second hydraulic telescopic rod 22 reset accordingly with the change of hydraulic power, eliminating the need for an additional reset power source, simplifying the structural design. At the same time, it realizes bidirectional dynamic adaptation of the device to changes in intake volume. When the intake volume increases, the processing capacity is automatically increased, and when it decreases, the processing capacity is automatically reduced. No manual intervention is required throughout the process. After the swing plate 23 resets, it blocks the reverse flow of gas in the adsorption tube 3, ensuring the forward flow of gas in the air inlet pipe 5 and avoiding problems such as zeolite particle adsorption failure and reduced exhaust gas treatment efficiency caused by gas backflow.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated fluidized bed zeolite molecular sieve adsorption desorption apparatus, characterized by, The system includes a circulation pipeline, which is composed of a horizontally arranged desorption pipe (1), an L-shaped connecting pipe (2) connected to one end of the desorption pipe (1), and an inclined adsorption pipe (3) connected to the lower end of the L-shaped connecting pipe (2) in sequence. The circulation pipeline is filled with zeolite particles. A vertical feed pipe (4) is provided on one side of the circulation pipeline. The lower end of the adsorption pipe (3) is connected to the lower part of the feed pipe (4), and the end of the desorption pipe (1) away from the L-shaped connecting pipe (2) is connected to the upper part of the feed pipe (4). The adsorption pipe (3) is located outside the feed pipe (4). The side is provided with an air inlet pipe (5) and an air outlet pipe (6) connected to its interior. The adsorption pipe (3) is divided into several chambers (8) by several sets of ventilation baffles (7) facing the air inlet pipe (5). The adsorption pipe (3) is provided with a sealing plate structure for controlling the opening degree of each chamber (8) and the L-shaped connecting pipe (2). The feed pipe (4) is provided with a speed change structure for controlling the feed speed. The air inlet pipe (5) is provided with a hydraulic drive structure that drives the sealing plate structure and the speed change structure to work synchronously according to the air volume.

2. The integrated fluidized bed zeolite molecular sieve adsorption / desorption device of claim 1, wherein, The sealing plate structure includes a slot (9) set on one side of the adsorption tube (3), and a sealing plate (10) is slidably connected in the slot (9). The side of the sealing plate (10) away from the air inlet pipe (5) is fixedly connected to the outer wall of the adsorption tube (3) through the first hydraulic telescopic rod (11).

3. An integrated fluidized bed zeolite molecular sieve adsorption / desorption device according to claim 2, wherein The feeding pipe (4) is equipped with a vertically arranged spiral feeding rod (12). The spiral blades (13) of the spiral feeding rod (12) are provided with several sets of screen holes (14). The bottom of the feeding pipe (4) is provided with a vibrating screening structure. The upper end of the feeding pipe (4) is fixedly connected to a housing (15). The output shaft of the spiral feeding rod (12) passes through the housing (15) and is rotatably connected to the housing (15). The housing (15) is provided with a speed-changing structure for controlling the rotation speed of the spiral feeding rod (12).

4. The integrated fluidized bed zeolite molecular sieve adsorption-desorption device according to claim 3, characterized in that, The speed change structure includes a friction disc (16) horizontally fixed on the upper end of the output shaft of the screw feed rod (12), a drive motor (17) fixedly connected to one side of the housing (15), the output end of the drive motor (17) passing through the housing (15) and fixedly connected to a horizontally arranged spline shaft (18), a spline sleeve (19) slidably connected to the outside of the spline shaft (18), and a friction wheel (20) that is frictionally driven by the friction disc (16) fixedly connected to the end of the spline sleeve (19) away from the spline shaft (18). The end of the friction wheel (20) away from the spline sleeve (19) is connected to the second hydraulic telescopic rod (22) through the rotating bearing (21). The fixed end of the second hydraulic telescopic rod (22) is fixedly connected to the inner wall of the housing (15). The second hydraulic telescopic rod (22) is connected to the hydraulic drive structure.

5. An integrated fluidized bed zeolite molecular sieve adsorption-desorption device according to claim 4, characterized in that, The hydraulic drive structure includes a swing plate (23) vertically installed in the air inlet pipe (5). The upper part of both ends of the swing plate (23) is connected to a fixed shaft (24). The two ends of the fixed shaft (24) are rotatably connected to the inner wall of the air inlet pipe (5). Several sets of horizontally arranged hydraulic cylinders (25) are fixedly connected inside the air inlet pipe (5). The fixed end of the hydraulic cylinder (25) is fixedly connected to the inner wall of the air inlet pipe (5) through the mounting plate (26). The output end of the hydraulic cylinder (25) is pressed against the side of the swing plate (23) away from the desorption pipe (1). A compression spring (27) is fixedly connected between the fixed end of the hydraulic cylinder (25) and the swing plate (23). The upper end of the air inlet pipe (5) is provided with a liquid outlet connector (28) that is connected to several sets of hydraulic cylinders (25). The liquid outlet connector (28) is connected to the first hydraulic telescopic rod (11) through the first pipeline (29), and the liquid outlet connector (28) is connected to the second hydraulic telescopic rod (22) through the second pipeline (30).

6. The integrated fluidized bed zeolite molecular sieve adsorption-desorption device according to claim 5, characterized in that, The vibrating screen structure includes several sets of fan-shaped screen plates (31) circumferentially distributed at the bottom of the feed pipe (4). Several sets of vertically positioned sliders (32) circumferentially distributed are fixedly connected to the inner wall of the feed pipe (4). The lower part of the positioning slider (32) is fixedly connected to the support ring. The outer side of the fan-shaped screen plate (31) is provided with a vertical slide groove (33) that is compatible with the positioning slider (32). The positioning slider (32) is embedded in the slide groove (33) and slidably connected to the slide groove (33). Several sets of fan-shaped screen plates (31) are slidably connected to the lower end of the spiral feed rod (12). The lower end of the spiral feed rod (12) is fixedly connected to a horizontally arranged drive shaft (34), and one end of the drive shaft (34) is rotatably connected to a squeeze roller (35). The squeeze roller (35) corresponds to the lower position of the spiral blade (13) of the spiral feed rod (12). The squeeze roller (35) is in squeezing contact with the lower surface of the fan-shaped screen plate (31). The lower end of the feed pipe (4) is detachably connected to a collection pipe (36) through a flange.

7. An integrated fluidized bed zeolite molecular sieve adsorption-desorption device according to claim 6, characterized in that, The outer side of the desorption pipe (1) is provided with a hot air connecting pipe (37) and an exhaust pipe (38) that are connected to its interior.

8. An integrated fluidized bed zeolite molecular sieve adsorption-desorption device according to claim 7, characterized in that, The outer side of the circulation pipe is fixedly connected to a support frame (39).

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