Environment-friendly flue gas desulfurization device and method

Abstract

The application belongs to the technical field of flue gas treatment, and specifically discloses an environment-friendly flue gas desulfurization device and method, which comprises a desulfurization tower, a first side-type rotating motor and a second side-type rotating motor, a sedimentation cavity is arranged below the inside of the desulfurization tower, a stirring mechanism is arranged in the inside of the sedimentation cavity, a smoke cleaning and discharging pipe is communicatively and fixedly arranged on the upper side of the inside of the desulfurization tower, a smoke inlet is communicatively and fixedly arranged on the inside of the desulfurization tower and close to the lower side of one side, a horizontal frame is arranged on the upper side of the inside of the desulfurization tower, a ring pipe sprayer is arranged in the horizontal frame, and a water inlet pipe is communicatively and fixedly arranged on one end of the ring pipe sprayer. The integrated linkage structure synchronously solves the defects of the traditional desulfurization equipment, such as uneven spray distribution, packing compaction failure, air inlet bias flow, easy blockage of flow uniformizing components, frequent shutdown and maintenance, and the like, so that the desulfurization efficiency and the continuous operation time length of the equipment are improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of flue gas treatment technology, and specifically discloses an environmentally friendly flue gas desulfurization device and method. Background Technology

[0002] With increasingly stringent environmental protection requirements, desulfurization of sulfur-containing flue gas, such as coal-fired flue gas and industrial kiln exhaust gas, has become a key focus of air pollution control. Currently, wet desulfurization technology is widely used due to its high desulfurization efficiency and relatively low operating costs. In a wet desulfurization system, the spray layer is one of the core components, its function being to evenly spray the desulfurization absorbent into the flue gas channel, ensuring sufficient gas-liquid contact for efficient sulfur dioxide absorption. In existing technologies, the spray layer often uses a ring-shaped pipeline arrangement, i.e., multiple layers of annular spray pipes are installed within the tower cross-section, with nozzles installed at intervals on each pipe. However, due to the geometric limitations of the annular pipeline, the nozzles can only be distributed circumferentially, often resulting in spray blind zones in the central area of ​​the tower and between pipes. This leads to uneven distribution of the absorbent, insufficient gas-liquid contact, and affects the overall desulfurization efficiency.

[0003] Meanwhile, to enhance desulfurization, the equipment is typically filled with porous adsorbent materials (such as activated carbon, molecular sieves, or composite desulfurizing agent particles). However, during long-term continuous operation, the adsorbent particle layer gradually stacks and compresses due to the impact of flue gas and its own gravity settling. This leads to a reduction in interparticle porosity, a decrease in specific surface area utilization, an increase in flue gas flow resistance, and a significant decline in adsorption kinetics. Existing technologies lack effective means to loosen and disturb the adsorbent material layer online, often requiring shutdown and replacement, which affects the continuity of system operation. Furthermore, when sulfur-containing flue gas enters the tower, the airflow is concentrated and unevenly distributed, and the inlet guide structure is easily blocked by dust, making self-cleaning difficult to achieve with conventional flushing methods.

[0004] To address the aforementioned issues, this application proposes an environmentally friendly flue gas desulfurization device and method, aiming to comprehensively improve the stability and processing efficiency of the desulfurization system by optimizing the spray structure, adding an adsorption material disturbance mechanism, and designing a gas equalization and diversion system and an inlet self-cleaning component. Summary of the Invention

[0005] The purpose of this invention is to address the problems in the prior art, such as insufficient coverage area of ​​the ring-type pipeline spraying leading to uneven gas-liquid contact, adsorption material particles becoming compacted and reduced in adsorption performance after long-term operation, lack of online disturbance methods, uneven distribution of rising flue gas, and easy blockage of the flue gas inlet without a self-cleaning structure. The invention proposes an environmentally friendly flue gas desulfurization device, comprising a desulfurization tower, a first side-mounted rotary motor, and a second side-mounted rotary motor. A sedimentation chamber is located at the bottom inside the desulfurization tower, and a stirring mechanism is installed inside the sedimentation chamber. A flue gas discharge pipe is connected to the top inside the desulfurization tower, and a flue gas inlet is connected to the bottom inside the desulfurization tower near one side. A... The system is equipped with a horizontal frame, inside which is installed a ring sprayer. One end of the ring sprayer is connected to a water inlet pipe that extends to the outside of the desulfurization tower. An air ring is fixedly installed on the lower end face of the horizontal frame, and a fixed ring shell is fixedly connected to the lower end face of the air ring. The fixed ring shell is connected to the inner wall of the desulfurization tower. The air ring is located around the ring sprayer and is used to gather the sprayed mist towards the center. A rotating shaft is rotatably embedded in the middle of the horizontal frame, and a diffusion component is installed below the outside of the rotating shaft. A packing ring chamber is fixedly installed inside the desulfurization tower and below the fixed ring shell. Multiple sets of arc-shaped slides are symmetrically opened inside the packing ring chamber, and the radii of the multiple sets of arc-shaped slides decrease sequentially from the outside to the inside. A material loosening mechanism is provided inside the desulfurization tower and below the packing ring. A support base is fixedly provided inside the desulfurization tower and above the flue gas inlet. The lower end of the rotating shaft is rotatably inserted below the support base. A driving component is provided at the lower end of the rotating shaft. Sliding guide components that cooperate with the movement of the material loosening mechanism are symmetrically provided outside the rotating shaft.

[0006] In the above scheme, the stirring mechanism further includes a stirrer, the second side-mounted rotary motor is disposed on one side of the desulfurization tower, the output end of the second side-mounted rotary motor extends into the sedimentation chamber, the end of the stirrer is connected to the output end of the second side-mounted rotary motor, a sedimentation and impurity discharge port is opened at the front end of the desulfurization tower, and a demister is fixedly installed inside the desulfurization tower and at one end near the flue gas discharge pipe.

[0007] In the above scheme, the diffusion component further includes a conical cylinder, which is fixedly fitted outside the rotating shaft and located above the inside of the packing ring chamber. The desulfurization tower is connected to a packing port on one side of the packing ring chamber.

[0008] In the above scheme, the loosening mechanism further includes a slope plate, which is fixedly mounted on the outside of the rotating shaft and located below the packing ring. Two scrapers are symmetrically fixedly installed on the outside of the rotating shaft. Multiple loosening rods are vertically installed on the upper surface of the two scrapers. The multiple loosening rods slide in the adjacent grooves of the corresponding multiple sets of arc-shaped slides. The two scrapers slide and fit against the outer surface of the slope plate.

[0009] In the above scheme, the sliding guide assembly further includes two arc-shaped guide frames, which are fixedly connected to the two sides inside the desulfurization tower, respectively. A housing is fixedly sleeved on the lower part of the rotating shaft, and connecting rods are fixedly installed on both sides of the housing. The two connecting rods correspond to the directions of the two sets of scrapers above. U-shaped sliders are connected to the ends of the two connecting rods that are far apart from each other. The two U-shaped sliders slide and engage with each other outside the arc-shaped guide frames on both sides.

[0010] In the above scheme, the driving component further includes a first bevel gear, which is fixedly installed on the lower part of the rotating shaft. A protective box is fixedly installed on the lower end face of the support base. The first side-mounted rotary motor is located on the outside of the desulfurization tower near the top. The output end of the first side-mounted rotary motor extends into the interior of the protective box. A second bevel gear is fixedly sleeved on the output end of the first side-mounted rotary motor. The first bevel gear and the second bevel gear are meshed together.

[0011] In the above scheme, furthermore, the lower end faces of both sets of U-shaped sliders are fixedly installed with support rods, and the lower end faces of the two support rods are jointly installed with a gas equalization plate. Inside the desulfurization tower and below the gas equalization plate, a backing plate is fixedly installed. Both sides of the backing plate are fixedly embedded with backing rods. Springs are fitted on the outside of the two backing rods and above the backing plate. Sliding cylinders are slidably fitted on the upper inside of the two backing rods. Brushes are jointly installed on the upper end faces of the two sliding cylinders. The upper end of the brushes is in contact with the lower end face of the gas equalization plate.

[0012] A desulfurization method for an environmentally friendly flue gas desulfurization device, based on the aforementioned environmentally friendly flue gas desulfurization device, includes the following steps: S1: The flue gas to be treated is introduced into the tower through the flue gas inlet below the side wall of the desulfurization tower. The flue gas flows from bottom to top. The water inlet pipe is opened in advance to enable the ring sprayer to have the conditions for spraying operation. Then, ensure that the working elements inside the desulfurization tower are in standby mode. S2: The liquid medicine is transported to the ring sprayer through the water inlet pipe and atomized and sprayed out. With the help of the air ring, the liquid medicine is gathered towards the center of the tower and fully contacted with the rising flue gas to complete the initial neutralization and desulfurization of sulfides in the flue gas. S3: The drive unit drives the rotating shaft to rotate, which in turn drives the loosening mechanism to work with the arc-shaped slide of the packing ring to dynamically loosen and adsorb the packing, continuously increasing the contact area of ​​the flue gas and performing secondary deep desulfurization and purification of the flue gas. S4: The desulfurized waste liquid falls into the sedimentation chamber at the bottom of the desulfurization tower. The stirring mechanism stirs the liquid to prevent agglomeration and accelerate the solid-liquid sedimentation. The purified flue gas flows upward and is finally discharged through the flue gas discharge pipe, completing a single desulfurization process. It can be continuously cyclically operated.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention features an air ring below the loop sprayer, which can concentrate the atomized desulfurization liquid towards the center of the desulfurization tower, eliminating the blind spraying zone in the center of the tower that exists in conventional loop spraying pipelines. This allows the liquid droplets to be evenly distributed across the cross-section of the tower, significantly increasing the contact area between the flue gas and the desulfurization liquid, enhancing the neutralization effect of sulfur dioxide, and improving the basic desulfurization efficiency from the spraying source.

[0014] In addition, the desulfurization tower relies on the continuous reciprocating sliding of the loose material rod along the arc-shaped slide of the packing ring to agitate the adsorption packing inside the chamber online, and to break up the stacked and compacted granular materials in real time. This avoids the problems of the packing being impacted by flue gas and undergoing gravity settling, resulting in void shrinkage and specific surface area decay. It can maintain the high adsorption activity of the packing layer without frequent shutdowns, ensuring the effect of secondary deep desulfurization, while extending the packing replacement cycle, reducing the frequency of downtime maintenance, and increasing the continuous operation time of the equipment.

[0015] Secondly, the rotating shaft is driven by a bevel gear transmission structure, which synchronously drives the sliding guide component, the gas equalization plate, and the brush component to rotate. After the flue gas enters the tower, it is first divided and dispersed by the gas equalization plate, which solves the problems of concentrated airflow at the flue gas inlet and uneven distribution of flue gas in the tower. During the rotation of the rotating shaft, the brush component continuously adheres to the bottom of the gas equalization plate and scrapes back and forth, automatically cleaning the dust adhering to the gaps in the plate, realizing the self-cleaning of the flue gas equalization component, and preventing the problem of increased airflow resistance and deterioration of desulfurization conditions caused by dust blockage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly flue gas desulfurization device and method provided by the present invention; Figure 2 Another schematic diagram of the overall structure of the environmentally friendly flue gas desulfurization device and method provided by the present invention; Figure 3 A cross-sectional schematic diagram of the overall structure of the desulfurization tower for an environmentally friendly flue gas desulfurization device and method provided by the present invention; Figure 4 A schematic diagram of the connection structure between the wind ring, rotating shaft, conical cylinder, and slope plate disassembled components of an environmentally friendly flue gas desulfurization device and method provided by the present invention. Figure 5 A schematic diagram of the packing ring chamber, loosening mechanism, bevel gear drive, and sliding guide frame assembly of an environmentally friendly flue gas desulfurization device and method provided by the present invention. Figure 6 Detailed exploded view of the connection structure between the arc-shaped slide, scraper, U-shaped slider, first bevel gear, and second bevel gear in an environmentally friendly flue gas desulfurization device and method provided by the present invention; Figure 7 This is a schematic diagram of the connection structure between the gas equalization plate, spring, push rod, and brush components in an environmentally friendly flue gas desulfurization device and method provided by the present invention.

[0017] In the diagram: 1. Desulfurization tower; 2. Sedimentation outlet; 3. Flue gas discharge pipe; 4. Spring; 5. Packing inlet; 6. First side-mounted rotary motor; 7. Flue gas inlet; 8. Second side-mounted rotary motor; 9. Water inlet pipe; 10. Support plate; 11. Agitator; 12. Support rod; 13. Air ring; 14. Demister; 15. Fixed ring shell; 16. Packing ring chamber; 17. Air distribution plate; 18. Loosening rod; 19. Horizontal frame; 20. Ring sprayer; 21. Rotating shaft; 22. Conical cylinder; 23. Sloping plate; 24. Slide cylinder; 25. Arc-shaped slide; 26. Support rod; 27. Protective box; 28. Support base; 29. ​​Arc-shaped guide frame; 30. Connecting rod; 31. Scraper; 32. U-shaped slider; 33. First bevel gear; 34. Second bevel gear; 35. Brush component. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1-7The environmentally friendly flue gas desulfurization device shown includes a desulfurization tower 1, a first side-mounted rotary motor 6, and a second side-mounted rotary motor 8. A sedimentation chamber is located at the bottom inside the desulfurization tower 1, and a stirring mechanism is installed inside the sedimentation chamber. A clean flue gas discharge pipe 3 is connected to the top inside the desulfurization tower 1. A flue gas inlet 7 is connected to the bottom inside the desulfurization tower 1, near one side. A horizontal frame 19 is located at the top inside the desulfurization tower 1, and a ring sprayer 20 is installed inside the horizontal frame 19. One end of the ring sprayer 20 is connected to a water inlet pipe 9. The inlet pipe 9 extends to the outside of the desulfurization tower 1. An air ring 13 is fixedly installed on the lower end face of the cross frame 19. A fixed ring shell 15 is fixedly connected to the lower end face of the air ring 13. The fixed ring shell 15 is connected to the inner wall of the desulfurization tower 1. The air ring 13 is located around the annular sprayer 20 and is used to gather the sprayed mist towards the center. A rotating shaft 21 is rotatably embedded in the middle of the cross frame 19. The air ring 13 faces the bottom of the annular sprayer 20 and can gather the spray droplets to the center of the tower. The annular sprayer 20 includes an annular main pipe and several atomizing nozzles. The annular main pipe is arranged horizontally in a circular shape inside the cross frame 19. The air ring 13 is an annular hollow guide ring, and its inner diameter is larger than the outer diameter of the annular main pipe of the annular sprayer 20, so that the air ring 13 surrounds the outer periphery of the annular sprayer 20. The lower end face of the air ring 13 is evenly provided with multiple air outlet holes or air outlet slits inclined towards the central axis of the tower body. The air inlet of the air ring 13 is connected to compressed air or a process fan. The center of the cross frame 19 has a pre-reserved shaft hole, and the rotating shaft 21 is inserted into the shaft hole to achieve radial limit. A diffusion component is provided below the outside of the rotating shaft 21. Inside the desulfurization tower 1 and below the fixed ring shell 15, a packing ring chamber 16 is fixedly installed. Multiple sets of arc-shaped slides 25 are symmetrically opened inside the packing ring chamber 16, and the radius of the multiple sets of arc-shaped slides 25 decreases sequentially from the outside to the inside. A material loosening mechanism is provided inside the desulfurization tower 1 and below the packing ring 16. A support base 28 is fixedly provided inside the desulfurization tower 1 and above the flue gas inlet 7. The lower end of the rotating shaft 21 is inserted into the support base 28. A driving component is provided at the lower end of the rotating shaft 21. Sliding guide components that cooperate with the movement of the material loosening mechanism are symmetrically provided on the outside of the rotating shaft 21.

[0021] The air ring 13 eliminates the blind zone in the center of the spray, and the packing ring 16, combined with the loosening mechanism, loosens the adsorbed packing in real time. The drive component synchronously links with the gas equalization component, so that it can simultaneously complete the multiple desulfurization enhancement processes of spray mist, packing loosening, and flue gas equalization.

[0022] In this embodiment, the stirring mechanism specifically includes a stirrer 11, a second-side rotary motor 8 is disposed on one side of the desulfurization tower 1, the output end of the second-side rotary motor 8 extends into the sedimentation chamber, the end of the stirrer 11 is connected to the output end of the second-side rotary motor 8, and the end of the main shaft of the stirrer 11 is rigidly connected to the output shaft of the second-side rotary motor 8 through a coupling. A sedimentation discharge port 2 is provided at the front end of the desulfurization tower 1, and a demister 14 is fixedly installed inside the desulfurization tower 1 and at one end near the flue gas discharge pipe 3. The second-side rotary motor 8 is externally arranged to facilitate the inspection and maintenance of the stirrer 11. The stirrer 11 continuously stirs the solid-liquid mixture in the sedimentation chamber to prevent the desulfurization waste residue from agglomerating and accumulating. The demister 14 intercepts the liquid droplets carried by the flue gas to prevent water vapor from being directly carried out from the flue gas discharge pipe 3, causing reagent loss.

[0023] After the desulfurization reaction, the waste liquid and waste residue settle to the bottom sedimentation chamber. The second side-mounted rotary motor 8 is started to drive the stirrer 11 to rotate and stir continuously, so that the solid impurities are suspended and the agglomeration is delayed. The sediment discharge port 2 is opened periodically to clean the sedimented waste residue. The purified flue gas flows upward through the demister 14 to remove the liquid droplets, and then is sent into the clean flue gas discharge pipe 3 for external discharge.

[0024] In this embodiment, specifically, the diffusion component includes a conical cylinder 22, which is fixedly fitted outside the rotating shaft 21 and located inside and above the packing ring chamber 16. The outer surface of the conical cylinder 22 is provided with an anti-stick coating, which guides the adsorbent material during filling and mist spraying. The mist can flow quickly into the packing ring chamber 16. A packing port 5 is installed inside the desulfurization tower 1 and on one side of the packing ring chamber 16. The packing port 5 can be used to replenish and replace the adsorbent packing without stopping the equipment, thereby increasing the continuous operation time of the equipment.

[0025] After being sprayed, the flue gas and mist come into contact with the conical cylinder 22. The conical surface of the cylinder 22 evenly disperses the medium in all directions, allowing it to pass evenly through the packing inside the packing ring 16. When the packing is worn out, the operator can replenish the packing ring 16 with new desulfurization adsorption packing through the packing port 5.

[0026] In this embodiment, the loosening mechanism specifically includes a slope plate 23, which is fixedly mounted on the outside of the rotating shaft 21 and located below the packing ring chamber 16. Two scrapers 31 are symmetrically fixedly installed on the outside of the rotating shaft 21. Multiple loosening rods 18 are vertically installed on the upper surface of the two scrapers 31. The multiple loosening rods 18 slide in the adjacent slots of the corresponding sets of arc-shaped slides 25. Multiple loosening rods 18 are welded vertically upward at the upper end of each scraper 31. The loosening rods 18 are vertically inserted into the adjacent slots of the arc-shaped slides 25 in the packing ring chamber 16. The loosening rods 18 are in clearance fit with the slot wall of the arc-shaped slide 25. The two scrapers 31 slide and adhere to the outer surface of the slope plate 23. The slope plate 23 provides stable sliding support for the scrapers 31. The loosening rods 18 slide back and forth in a ring along the arc-shaped slides 25, continuously agitating the packing particles, dispersing and compacting the stacked materials, stabilizing the porosity of the packing layer, and increasing the contact area of ​​the flue gas.

[0027] When the rotating shaft 21 rotates, it drives the scrapers 31 on both sides to slide in a ring along the slope plate 23. This not only quickly scrapes away the mist dripping onto the outer surface of the slope plate 23, but also stably cooperates with the loosening rod 18 at the top of the scraper 31 to move synchronously along the groove of the arc-shaped slide 25, continuously penetrating and disturbing the adsorbed particles inside the packing ring hopper 16, avoiding the packing from being squeezed and compacted, and ensuring that the desulfurization reaction continues to proceed efficiently.

[0028] In this embodiment, specifically, the sliding guide assembly includes two arc-shaped guide frames 29, which are fixedly connected to the two sides inside the desulfurization tower 1. A housing is fixedly fitted to the lower part of the rotating shaft 21. Connecting rods 30 are fixedly installed on both sides of the housing. The two connecting rods 30 correspond to the directions of the two sets of scrapers 31 above. U-shaped sliders 32 are connected to the ends of the two connecting rods 30 that are far apart from each other. The two U-shaped sliders 32 slide and cooperate with the arc-shaped guide frames 29 on both sides. The arc-shaped guide frames 29 cooperate with the U-shaped sliders 32 to circumferentially limit the connecting rods 30 and scrapers 31, constrain the rotation trajectory of the loosening mechanism, prevent the loosening rod 18 from deviating and jamming the arc-shaped slide 25, and improve the stability of the mechanism operation.

[0029] The rotation of the shaft 21 drives the housing and connecting rod 30 to rotate synchronously. The U-shaped slider 32 at the end of the connecting rod 30 slides in a ring along the arc-shaped guide frame 29, limiting the rotation radius of the entire loosening mechanism and ensuring that the loosening rod 18 always moves smoothly along the groove of the arc-shaped slide 25.

[0030] In this embodiment, specifically, the driving component includes a first bevel gear 33, which is fixedly installed on the lower part of the rotating shaft 21. A protective box 27 is fixedly installed on the lower end face of the support base 28. The protective box 27 completely encloses the first bevel gear 33 and the second bevel gear 34, isolating water vapor and dust inside the tower. A first side-mounted rotary motor 6 is located on the outside of one side of the desulfurization tower 1 near the top. The output end of the first side-mounted rotary motor 6 extends into the interior of the protective box 27. The output end of the first side-mounted rotary motor 6 is fixedly sleeved with the second bevel gear 34. The first bevel gear 33 and the second bevel gear 34 are meshed together.

[0031] Start the first side-mounted rotary motor 6, and the output shaft drives the second bevel gear 34 to rotate horizontally. The meshing drive of the first bevel gear 33 drives the rotating shaft 21 to rotate vertically as a whole, and simultaneously drives the loosening mechanism, the sliding guide component, and the air distribution plate 17 to complete the linkage operation.

[0032] In this embodiment, specifically, support rods 26 are fixedly installed on the lower end faces of both sets of U-shaped sliders 32, and air distribution plate 17 is installed on the lower end faces of the two support rods 26. A backing plate 10 is fixedly installed inside the desulfurization tower 1 and below the air distribution plate 17. A backing rod 12 is fixedly embedded on both sides inside the backing plate 10. A spring 4 is fitted on the outside of the two backing rods 12 and above the backing plate 10. A sliding cylinder 24 is slidably fitted on the upper inside of the two backing rods 12. A brush component 35 is installed on the upper end face of the two sliding cylinders 24. The upper end of the brush component 35 is in contact with the lower end face of the air distribution plate 17. The spring 4 continuously pushes the sliding cylinder 24 and the brush component 35 upward to ensure that the brush bristles are always in contact with the bottom of the air distribution plate 17. The air distribution plate 17 rotates synchronously with the rotating shaft 21 to evenly disperse the incoming airflow, and the brush component 35 simultaneously scrapes the air holes on the plate surface to achieve automatic unblocking without manual flushing.

[0033] The brush component 35 includes a mounting base and multiple sets of bristle bundles. The mounting base is a rectangular plate, and multiple sets of bristle bundles are fixed to its upper surface by bonding, bristle implantation, or other methods. The bristle bundles are made of a heat-resistant, wear-resistant, and elastic polymer material (such as polyamide, polypropylene, or polytetrafluoroethylene fiber). The tips of the bristle bundles are distributed radially or obliquely to ensure that the tips of the bristles can fully contact the lower surface of the air distribution plate 17 and the edge of the orifice. The lower surface of the mounting base is fixedly connected to the upper surfaces of the two sliding cylinders 24 on both sides.

[0034] A desulfurization method for an environmentally friendly flue gas desulfurization device, based on the aforementioned environmentally friendly flue gas desulfurization device, includes the following steps: S1: The flue gas to be treated is introduced into the tower through the flue gas inlet 7 below the side wall of the desulfurization tower 1. The flue gas flows from bottom to top. The water inlet pipe 9 is turned on in advance so that the ring sprayer 20 is ready for spraying operation. Then, ensure that the working elements inside the desulfurization tower 1 are in standby mode. S2: The liquid medicine is transported through the water inlet pipe 9 to the ring sprayer 20 for atomization and spraying. With the help of the air ring 13, the liquid medicine is gathered towards the center of the tower body and fully contacted with the rising flue gas to complete the initial neutralization and desulfurization of sulfides in the flue gas. S3: The drive component drives the rotating shaft 21 to rotate, which in turn drives the loosening mechanism to work with the arc-shaped slide 25 of the packing ring hopper 16 to dynamically loosen and adsorb the packing, continuously increasing the contact area of ​​the flue gas and performing secondary deep desulfurization and purification of the flue gas. S4: The desulfurized waste liquid falls into the sedimentation chamber at the bottom of the desulfurization tower 1. The stirring mechanism stirs the liquid to prevent agglomeration and accelerate the solid-liquid sedimentation. The purified flue gas flows upward and is finally discharged through the flue gas discharge pipe 3, completing a single desulfurization process. It can be continuously cyclically operated.

[0035] In summary, the desulfurization tower 1 is equipped with an air ring 13 to gather the mist and eliminate blind spots in the spraying process. It relies on a single first-side rotary motor 6 to synchronously drive the rotating shaft 21 through bevel gear transmission. This drives the loosening rod 18 to loosen the packing along the arc-shaped slide 25 online, and the air distribution plate 17 to evenly distribute the airflow. The brush 35, which is tightened by the spring 4, achieves self-cleaning of the air distribution plate. The second-side rotary motor 8 at the bottom drives the agitator 11 to prevent waste residue from clumping. In conjunction with the conical cylinder 22 to divert the medium and the demister 14 to remove droplets, the entire structure simultaneously completes primary spray desulfurization, secondary deep purification of the packing, flue gas equalization, plate self-cleaning, and waste liquid sedimentation treatment. This solves the problems of uneven spraying, packing compaction failure, airflow deviation, easy clogging of the flow equalization components, and frequent shutdown for maintenance that are common in traditional equipment.

[0036] Working principle: The flue gas to be treated enters the desulfurization tower 1 from bottom to top through the flue gas inlet 7 at the lower side. The desulfurization solution is connected to the water inlet pipe 9 through an external pipeline and delivered to the ring sprayer 20 in the cross frame 19. The ring sprayer 20 atomizes and sprays out the desulfurization solution. The air ring 13 at the lower end of the cross frame 19 generates a guiding airflow, which gathers the scattered mist towards the central axis of the desulfurization tower 1, eliminating the blind spot of spraying in the center of the tower. The upward-flowing flue gas comes into full contact with the gathered uniform droplets, and the sulfides in the flue gas and the solution undergo a neutralization reaction, completing the initial desulfurization. The fixed ring shell 15 seals and fixes the air ring 13 to the inner wall of the desulfurization tower 1, causing the air ring 13 to constrain the airflow and the mist to flow only downward into the packing area. At this time, the output end of the first side-mounted rotary motor 6 extends into the protective box 27, driving the second bevel gear 34 to rotate. The second bevel gear 34 meshes with the first bevel gear 33 at the lower end of the rotating shaft 21, converting the horizontal rotational power into the circumferential rotation of the vertical rotating shaft 21. The protective box 27 is fixed to the bottom of the support base 28, isolating water vapor and dust inside the tower and protecting the transmission pair. The rotating shaft 21 passes through the support base 28 to achieve axial limitation, and synchronously drives the loosening mechanism, sliding guide assembly, and air distribution plate 17 to rotate synchronously as a whole.

[0037] A conical cylinder 22 is fitted in the middle of the rotating shaft 21. The conical cylinder 22 diverts and diffuses the downward mist and upward flue gas, so that the medium is evenly spread across the cross section of the packing ring chamber 16. Multiple sets of arc-shaped slides 25 with decreasing radius from the outside to the inside inside the packing ring chamber 16 provide sliding tracks for the loosening rod 18.

[0038] The rotating shaft 21 drives the scrapers 31 on both sides to slide circumferentially along the outer surface of the slope plate 23. The loosening rods 18 arranged vertically at the upper end of the scrapers 31 are inserted into the adjacent slots of the arc-shaped slide rail 25 and slide back and forth in a semi-arc shape, continuously disturbing the packing adsorbed packing inside the packing ring 16, breaking up the particles piled up due to flue gas impact and gravity compaction, and continuously maintaining the packing voids and effective contact area. The packing can be replenished and replaced through the packing port 5. The loosened packing is in full contact with the flue gas to complete the secondary deep desulfurization and purification. The lower part of the rotating shaft 21 is fitted with a shell and connected to the U-shaped slider 32 through the connecting rod 30. The U-shaped slider 32 is circumferentially guided by the arc-shaped guide frame 29 fixed on the inner wall of the desulfurization tower 1. Limiting the sliding mechanism ensures the stability of the rotation trajectory of the material loosening mechanism and the gas equalization component; the bottom of the U-shaped slider 32 is suspended by the support rod 26 to the gas equalization plate 17, which rotates synchronously with the rotating shaft 21. During the rise of the flue gas, it first passes through the gas equalization plate 17, and the concentrated airflow is dispersed and diverted by the holes in the plate, which solves the problems of airflow deviation at the flue gas inlet 7 and uneven distribution of flue gas in the tower. A baffle plate 10 is set below the gas equalization plate 17, and the external spring 4 of the baffle rod 12 pushes the slide cylinder 24 upward, so that the brush part 35 at the top of the slide cylinder 24 always fits against the lower surface of the gas equalization plate 17, and rotates synchronously with the gas equalization plate 17 to scrape the holes in the plate, automatically cleaning the adhering dust and preventing the air holes from being blocked and the airflow resistance from increasing.

[0039] Finally, the waste liquid and solid impurities generated by the desulfurization reaction fall downward into the sedimentation chamber at the bottom of the desulfurization tower 1; the second side-mounted rotary motor 8 drives the stirrer 11 inside the sedimentation chamber to continuously stir, avoid solid slag agglomeration, accelerate solid-liquid stratification and sedimentation, and the accumulated waste slag can be discharged periodically through the sedimentation discharge port 2.

[0040] After two stages of desulfurization and equalization purification, the clean flue gas continues to rise, passes through the demister 14 near the clean flue gas discharge pipe 3, removes the liquid droplets entrained in the flue gas, and is finally discharged from the tower through the clean flue gas discharge pipe 3. The entire set of equipment can continuously carry out flue gas desulfurization operations.

[0041] 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 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 the claimed invention.

Claims

1. An environmentally friendly flue gas desulfurization device, comprising a desulfurization tower (1), a first side-mounted rotary motor (6), and a second side-mounted rotary motor (8), characterized in that, A sedimentation chamber is provided at the bottom inside the desulfurization tower (1), and a stirring mechanism is provided inside the sedimentation chamber. A flue gas discharge pipe (3) is connected to the top inside the desulfurization tower (1). A flue gas inlet (7) is connected to the bottom inside the desulfurization tower (1) and near one side. A crossbeam (19) is provided at the top inside the desulfurization tower (1). A ring sprayer (20) is provided inside the crossbeam (19). A water inlet pipe (9) is connected to one end of the ring sprayer (20). The water inlet pipe (9) extends to the outside of the desulfurization tower (1). An air ring (13) is fixedly installed on the lower end face of the crossbeam (19). A fixed ring shell (15) is fixedly connected to the lower end face of the desulfurization tower (1). The fixed ring shell (15) is connected to the inner wall of the desulfurization tower (1). The air ring (13) is located outside the ring sprayer (20) and is used to gather the sprayed mist towards the center. A rotating shaft (21) is rotatably embedded in the middle of the cross frame (19). A diffusion component is provided below the outside of the rotating shaft (21). A packing ring chamber (16) is fixedly installed inside the desulfurization tower (1) and below the fixed ring shell (15). Multiple sets of arc-shaped slides (25) are symmetrically opened inside the packing ring chamber (16). The radius of the multiple sets of arc-shaped slides (25) decreases sequentially from the outside to the inside. A material loosening mechanism is provided inside the desulfurization tower (1) and below the packing ring (16). A support base (28) is fixedly provided inside the desulfurization tower (1) and above the flue gas inlet (7). The lower end of the rotating shaft (21) is inserted into the support base (28). A driving component is provided at the lower end of the outside of the rotating shaft (21). Sliding guide components that cooperate with the movement of the material loosening mechanism are symmetrically provided on the outside of the rotating shaft (21). The loosening mechanism includes a slope plate (23), which is fixedly mounted on the outside of the rotating shaft (21) and located below the packing ring (16). Two scrapers (31) are symmetrically fixedly installed on the outside of the rotating shaft (21). Multiple loosening rods (18) are vertically installed on the upper end face of the two scrapers (31). The multiple loosening rods (18) slide in the adjacent grooves of the corresponding multiple sets of arc-shaped slides (25). The two scrapers (31) slide and fit against the outer surface of the slope plate (23). The sliding guide assembly includes two arc-shaped guide frames (29), which are fixedly connected to the two sides inside the desulfurization tower (1). A sleeve is fixedly fitted on the lower part of the rotating shaft (21). Connecting rods (30) are fixedly installed on both sides of the sleeve. The two connecting rods (30) correspond to the directions of the two sets of scrapers (31) above. U-shaped sliders (32) are connected to the ends of the two connecting rods (30) that are far apart from each other. The two U-shaped sliders (32) slide and cooperate with each other outside the arc-shaped guide frames (29) on both sides. Both sets of U-shaped sliders (32) are fixedly mounted with support rods (26) on their lower ends. Both support rods (26) are mounted with a gas equalization plate (17) on their lower ends. Inside the desulfurization tower (1) and below the gas equalization plate (17), a stop plate (10) is fixedly mounted. Both sides of the inside of the stop plate (10) are fixedly embedded with a stop rod (12). Both the outside of the two stop rods (12) and above the stop plate (10) are fitted with springs (4). Both the inside of the two stop rods (12) are slidably fitted with a slide cylinder (24). Both the upper ends of the two slide cylinders (24) are mounted with a brush (35). The upper end of the brush (35) is in contact with the lower end of the gas equalization plate (17).

2. The environmentally friendly flue gas desulfurization device according to claim 1, characterized in that, The stirring mechanism includes a stirrer (11), a second side-mounted rotary motor (8) is located on one side of the desulfurization tower (1), the output end of the second side-mounted rotary motor (8) extends into the sedimentation chamber, the end of the stirrer (11) is connected to the output end of the second side-mounted rotary motor (8), a sedimentation discharge port (2) is opened at the front end of the desulfurization tower (1), and a demister (14) is fixedly installed inside the desulfurization tower (1) and at one end near the flue gas discharge pipe (3).

3. The environmentally friendly flue gas desulfurization device according to claim 2, characterized in that, The diffusion assembly includes a conical cylinder (22), which is fixedly fitted outside the rotating shaft (21) and located above the inside of the packing ring chamber (16). The desulfurization tower (1) is connected to a packing port (5) on one side of the packing ring chamber (16).

4. The environmentally friendly flue gas desulfurization device according to claim 3, characterized in that, The driving component includes a first bevel gear (33), which is fixedly installed on the outside of the rotating shaft (21) and a protective box (27) is fixedly installed on the lower end face of the support base (28). The first side-mounted rotary motor (6) is located on the outside of the desulfurization tower (1) near the top. The output end of the first side-mounted rotary motor (6) extends into the protective box (27). The output end of the first side-mounted rotary motor (6) is fixedly sleeved with a second bevel gear (34). The first bevel gear (33) and the second bevel gear (34) are meshed together.

5. A desulfurization method for an environmentally friendly flue gas desulfurization device, used based on the environmentally friendly flue gas desulfurization device according to any one of claims 1-4, characterized in that, Includes the following steps: S1: The flue gas to be treated is introduced into the tower through the flue gas inlet (7) below the side wall of the desulfurization tower (1). The flue gas flows from bottom to top. The water inlet pipe (9) is opened in advance so that the ring sprayer (20) is ready for spraying operation. Then ensure that the working elements inside the desulfurization tower (1) are in standby mode. S2: The liquid medicine is transported through the water inlet pipe (9) to the ring sprayer (20) for atomization and spraying. With the help of the air ring (13), the liquid mist is gathered towards the center of the tower body and fully contacted with the rising flue gas to complete the initial neutralization and desulfurization of sulfides in the flue gas. S3: Drive the rotating shaft (21) to rotate through the drive component, drive the loosening mechanism to cooperate with the arc-shaped slide (25) of the packing ring bin (16) to dynamically loosen and adsorb the packing, continuously increase the contact area of ​​flue gas, and carry out secondary deep desulfurization and purification of flue gas. S4: The desulfurized waste liquid falls into the sedimentation chamber at the bottom of the desulfurization tower (1). The stirring mechanism stirs the liquid to prevent agglomeration and accelerate the solid-liquid sedimentation. The purified clean flue gas flows upward and is finally discharged through the flue gas discharge pipe (3) to complete a single desulfurization process. It can be continuously cyclically operated.

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