Desulfurizing tower with large-flux anti-blocking nozzle

Abstract

The application discloses a desulfurization tower with a large-flux anti-blocking nozzle and relates to the technical field of flue gas treatment. The desulfurization tower comprises a tower body, an inlet and an outlet are arranged on the tower body, an input pipe is arranged at the inlet position, a plurality of spraying mechanisms and an exhaust mechanism located at the uppermost position are arranged in the tower body, flue gas flows into the space below the tower body from the input pipe, under the exhaust action of the exhaust mechanism, the flue gas sequentially passes through the plurality of spraying mechanisms and flows out from the upper outlet, when the flue gas passes through the plurality of spraying mechanisms, the spraying mechanism sprays and atomizes desulfurizing agents outward by using the nozzle, the desulfurizing agents are in full contact with the flue gas, and the desulfurization of the flue gas is realized. In the application, the spraying mechanism adopts a large-flux Venturi nozzle, the conventional conical nozzle is replaced by the Venturi nozzle, and the long-term operation target and the reduction of the maintenance workload are achieved.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment technology, specifically a desulfurization tower with a high-flow-rate anti-clogging nozzle. Background Technology

[0002] In the field of industrial waste gas treatment, desulfurization towers are key equipment for removing sulfur-containing gases such as sulfur dioxide from flue gas. Wet flue gas desulfurization (FGD) processes are widely used due to their high efficiency. The nozzle, as a core component, is responsible for atomizing the desulfurizing agent and spraying it into the counter-current flue gas to achieve gas-liquid contact reaction. Existing FGD towers use spiral cone-shaped nozzles to atomize the desulfurizing agent, aiming for comprehensive contact with the flue gas to achieve desulfurization. However, impurities carried in the flue gas can easily enter the spray system with the absorbent, and due to the conical nozzle structure, they are prone to clogging. Clogging increases desulfurization costs and can even force the tower to shut down. Currently, the scaling problem is mainly addressed by manually cleaning or replacing the nozzles periodically, which severely affects desulfurization efficiency and prevents long-term operation. Summary of the Invention

[0003] The purpose of this invention is to provide a desulfurization tower with a high-flow-rate anti-clogging nozzle to solve the problems mentioned in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a desulfurization tower with a high-flow-rate anti-clogging nozzle, comprising a tower body, an inlet and an outlet, an input pipe inclinedly disposed at the inlet, and an exhaust mechanism and a multi-stage spray mechanism disposed inside the tower body. The spray mechanism sprays and atomizes the desulfurizing agent, and the flue gas enters the lower space inside the tower body from the input pipe. After passing through the multi-stage spray mechanism, the exhaust mechanism discharges the flue gas from the outlet.

[0005] The exhaust mechanism includes a converging pipe mounted on the tower body. One end of the converging pipe tapers inward to form a frustum-shaped space. An annular guide rail and a bearing are installed above the converging pipe. The bearing and guide rail are connected to an exhaust fan, which has multiple exhaust blades. An exhaust motor that drives the exhaust fan to rotate is installed on the converging pipe. The bearing and guide rail cause the exhaust fan to rotate on the converging pipe.

[0006] The exhaust fan extends outward from one end to a platform with a ring of toothed grooves. The exhaust motors are symmetrically distributed on both sides of the exhaust fan. A bevel gear is installed on the motor shaft of the exhaust motor, and the bevel gear meshes with the platform through the toothed grooves. A cross-shaped bracket is positioned above the exhaust fan, with a cylindrical bearing seat in the center. A rotating shaft is located within the exhaust fan blades. One end of the shaft is rotatably mounted on the bearing seat, while the other end extends through the exhaust fan and is fitted with a second bevel gear. A hollow rotating disk is mounted on the platform of the exhaust fan, with an annular gear disk at its output end. The gear disk meshes with the second bevel gear for transmission. A sleeve is fitted around the outside of the exhaust fan. When exhaust gas is discharged, the exhaust motor drives the exhaust fan to rotate via the first bevel gear and the platform. The exhaust fan then drives the exhaust fan blades to rotate, expelling the exhaust gas from the tower. To change the discharge rate, in addition to altering the exhaust motor's speed, the hollow rotating disk can be driven, causing it to rotate via the gear disk and thus adjusting the tilt angle of the exhaust fan blades within the exhaust fan.

[0007] The tower body is equipped with a transmission pipe, and the spraying mechanism includes an annular main pipe installed inside the tower body, intersecting branch pipes located inside the main pipe, and nozzles located at the intersections of the branch pipes. The branch pipes are connected to the main pipe, and the main pipe is connected to the transmission pipe.

[0008] A gas-gathering ring is installed below the main pipe and connects to the tower body. One end of the gas-gathering ring tapers inward. A cover plate is installed above the main pipe and connects to the tower body. One section of the nozzle has a tapered diameter, forming a constriction section. The gas-gathering ring is used to collect the flue gas, causing it to converge below the nozzle and improving the flue gas desulfurization effect.

[0009] The nozzle is a Venturi nozzle structure made of fiberglass. As flue gas passes through the nozzle, it sprays outwards and atomizes the desulfurizing agent, ensuring full contact between the agent and the flue gas for desulfurization. Replacing conventional conical nozzles with high-flow-rate Venturi nozzles achieves the goal of long-term operation and reduces maintenance workload.

[0010] The nozzle is a Laval nozzle structure. Multiple guide plates with twist angles are installed at the nozzle inlet. One end of each guide plate is connected to a central tube, one end of which is conical. The central tube is connected to a swirling cone via a guide rod. The swirling cone is located on the contraction side and has a rhomboid cross-section. Multiple arc-shaped force-bearing plates with twist angles are installed on the outer surface of the swirling cone near the guide rod. When the desulfurizing agent passes through the guide plates, it is initially guided to generate a swirling flow in the nozzle. The force-bearing plates on the surface of the swirling cone withstand the impact force of the desulfurizing agent. Under the action of the impact force, the force-bearing plates drive the swirling cone to rotate, indirectly causing the atomized desulfurizing agent to generate a swirling flow. Simultaneously, the force-bearing plates increase the force-bearing area of ​​the swirling cone, causing it to move downwards under the impact of the desulfurizing agent. When the rapidly flowing desulfurizing agent passes through the upper part of the swirl cone, it will form a negative pressure area on the outer side of the lower part of the swirl cone. However, under the negative pressure attraction of the negative pressure area, the atomized desulfurizing agent will automatically fill the negative pressure area after passing the maximum diameter at the middle position of the swirl cone. This will allow the atomized desulfurizing agent to completely fill the entire nozzle, so that no blank area without desulfurizing agent will be generated when the nozzle sprays out the desulfurizing agent.

[0011] The inner tube is hollow. One end of the guide rod is inserted into the inner tube, and the other end of the guide rod extends outward to form a flat plate. A spring is installed inside the inner tube. The spring is sleeved on the guide rod and abuts against the flat plate and the inner tube. The guide rod has a hollow structure. A connecting chain is rotatably installed in the middle of the inner tube. The connecting chain passes through the guide rod and is connected to a configuration rod at one end. The diameter of the configuration rod is equal to the inner diameter of the guide rod. The vortex cone is hollow and has an opening at one end. The configuration rod extends into the vortex cone through the opening. Multiple chains are connected in series near the constriction section of the guide rod. The length of the chains is less than the length of the configuration rod. When the spring is compressed, under the traction of the connecting chain, the configuration rod enters the guide rod and is located inside the chain. When the spring is at its original length, the mounting rod moves away from the mounting rod under its own weight and enters the vortex cone, where it is tilted. When no desulfurizer is being sprayed, the vortex cone and the force plate do not bear external impact forces. Under the elastic support of the spring, the guide rod pulls the vortex cone to the outlet side of the contraction section via a chain. When the desulfurizer is being sprayed, it enters the nozzle through the branch pipe and impacts the vortex cone and the force plate in the contraction section. Under the action of the impact force, the vortex cone moves downward and rotates under the drive of the force plate. The rotating vortex cone drives the atomized desulfurizer to swirl. After the desulfurization tower has been running for a certain period of time, the supply of desulfurizing agent is temporarily stopped. After the impact of the desulfurizing agent is lost, the swirling cone resets under the support of the spring. During the reset process, the swirling cone continues to rotate under the action of inertia. When the configuration rod falls into the swirling cone and is in an inclined state, the configuration rod changes the center of gravity of the swirling cone, thereby changing the rotation attitude of the swirling cone. This causes the swirling cone to tilt during rotation. The tilted swirling cone hits the contraction section. Through the impact, the adhesion of impurities in the contraction section is reduced or separated. The desulfurizing agent is reintroduced to flush away the impurities from the contraction section, thereby cleaning the impurities in the nozzle and preventing the nozzle from being blocked by impurities.

[0012] When the swirl cone is impacted by the desulfurizing agent and moves downward, the connecting chain cannot extend. Under the pull of the connecting chain, the configuration rod enters the guide rod and is positioned on the chain, connecting the two guide rod sections. This prevents the two guide rod sections from swaying due to the chain, allowing the swirl cone to swirl stably without swaying under the impact of the desulfurizing agent.

[0013] After the swirl cone is no longer impacted by the desulfurizing agent, it gradually returns to its original position under the weight of the configuration rod and the elastic support of the spring. The configuration rod gradually enters the interior of the swirl cone. When the configuration rod separates from the guide rod and enters the swirl cone, the center of gravity of the swirl cone shifts. Through the setting of the chain, the swirl cone can easily change its rotation state and be in an inclined posture.

[0014] When flue gas comes into contact with the atomized desulfurizing agent, the atomized desulfurizing agent generates a swirling flow under the guidance of the swirling cone, which in turn generates a tangential attraction to the flue gas, further increasing the probability of contact between the flue gas and the desulfurizing agent. Moreover, it gains downward momentum when ejected, and using the downward momentum and tangential attraction, it further carries the flue gas into the lower space inside the tower, making the flue gas stay in the tower for a longer time and improving the flue gas desulfurization effect.

[0015] The inner end face of the swirl cone is curved, and a drain port is provided at the lower end of the swirl cone. The drain port is used to discharge the desulfurizing agent present inside the swirl cone.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. As the flue gas passes through the nozzle, the nozzle sprays outward and atomizes the desulfurizing agent, ensuring full contact between the desulfurizing agent and the flue gas, thus achieving desulfurization. Replacing conventional conical nozzles with high-flow-rate Venturi nozzles achieves the goal of long-term operation and reduces maintenance workload.

[0017] 2. When the desulfurizing agent is sprayed, the swirling cone causes the atomized desulfurizing agent to swirl. The swirling desulfurizing agent has a tangential attraction and downward impact force on the flue gas. Using the downward force and tangential attraction, the flue gas is further carried into the lower space inside the tower, so that the flue gas is further retained in the tower, increasing the time the flue gas stays in the tower and improving the flue gas desulfurization effect.

[0018] When cleaning the nozzle, the supply of desulfurizing agent is stopped. Under the action of inertia, the swirl cone can still rotate for a short period of time. The configuration rod changes the center of gravity of the swirl cone, causing the swirl cone to tilt during rotation. The tilted swirl cone hits the contraction section. The impact reduces or separates the adhesion of impurities in the contraction section. The desulfurizing agent is then reintroduced to flush away the impurities from the contraction section, thus cleaning the nozzle and preventing the nozzle from being blocked by impurities. Attached Figure Description

[0019] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a perspective view of the exhaust mechanism of the present invention installed on the tower body; Figure 3 This is a perspective view of the spray mechanism of the present invention installed on the tower body; Figure 4 This is a front half-sectional view of the spray mechanism of the present invention installed inside the tower body (Embodiment 2). Figure 5 This is an exploded view of the spray mechanism of the present invention (Embodiment 2); Figure 6 This is a perspective view of the nozzle of the present invention (Embodiment 2); Figure 7 This is a front half-sectional view of the nozzle of the present invention (Embodiment 2); Figure 8 This is a perspective view of the exhaust mechanism of the present invention; Figure 9 This is an exploded view of the exhaust mechanism of the present invention.

[0020] In the diagram: 1. Tower body; 2. Input pipe; 3. Transmission pipe; 4. Exhaust mechanism; 5. Main pipe; 6. Branch pipe; 7. Nozzle; 8. Air gathering ring; 9. Cover plate; 10. Guide plate; 11. Middle pipe; 12. Swirl cone; 13. Guide rod; 14. Configuration rod; 15. Converging pipe; 16. Exhaust motor; 17. Exhaust fan; 18. Hollow rotating disc; 19. Sleeve; 20. Exhaust fan blade; 21. Gear disc. Detailed Implementation

[0021] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Figure 1 - Figure 9 As shown, the present invention provides a technical solution: a desulfurization tower with a high-flow anti-clogging nozzle, comprising a tower body 1, an inlet and an outlet on the tower body 1, an input pipe 2 inclinedly arranged at the inlet, an exhaust mechanism 4 and a multi-stage spray mechanism arranged inside the tower body 1, the spray mechanism sprays out and atomizes the desulfurizing agent, the flue gas enters the lower space inside the tower body 1 from the input pipe 2, and after passing through the multi-stage spray mechanism, the exhaust mechanism 4 discharges the flue gas from the outlet.

[0023] The exhaust mechanism 4 includes a converging pipe 15 installed on the tower body 1. One end of the converging pipe 15 is narrowed inward to form a frustum-shaped space. An annular guide rail and a bearing are provided above the converging pipe 15. The bearing and the guide rail are connected to the exhaust fan 17. The bearing and the guide rail cause the exhaust fan 17 to rotate on the converging pipe 15.

[0024] One end of the exhaust fan 17 extends outward to a platform with a ring of toothed grooves. The converging pipe 15 is equipped with an exhaust motor 16 that drives the exhaust fan 17 to rotate. The exhaust motors 16 are symmetrically distributed on both sides of the exhaust fan 17. A bevel gear is provided on the motor shaft of the exhaust motor 16, and the bevel gear meshes with the platform through the toothed grooves.

[0025] The exhaust fan 17 has multiple exhaust fan blades 20. A cross is positioned above the exhaust fan 17, with a cylindrical bearing seat in the center of the cross. A rotating shaft is located within each exhaust fan blade 20, with one end rotatably mounted on the bearing seat and the other end extending out of the exhaust fan 17 and fitted with a bevel gear. A hollow rotating disk 18 is mounted on the platform of the exhaust fan 17, with an annular gear disk 21 at its output end. The gear disk 21 meshes with the bevel gear. A sleeve 19 is fitted around the outside of the exhaust fan 17. When exhausting flue gas, the exhaust motor 16 drives the exhaust fan 17 to rotate via the bevel gear and the platform. The exhaust fan 17 then drives the exhaust fan blades 20 to rotate, expelling the flue gas from the tower body 1. To change the exhaust rate, in addition to altering the speed of the exhaust motor 16, the hollow rotating disk 18 can be driven, causing it to rotate via the gear disk 21, thereby adjusting the tilt angle of the exhaust fan blades 20 within the exhaust fan 17.

[0026] The tower body 1 is equipped with a transmission pipe 3. The spraying mechanism includes an annular main pipe 5 installed inside the tower body 1, cross-connected branch pipes 6 located inside the main pipe 5, and nozzles 7 located at the intersection of the branch pipes 6. The branch pipes 6 are connected to the main pipe 5, and the main pipe 5 is connected to the transmission pipe 3.

[0027] Below the main pipe 5, there is an air-gathering ring 8 that connects to the tower body 1. One end of the air-gathering ring 8 contracts inward. Above the main pipe 5, there is a cover plate 9 that connects to the tower body 1. One section of the nozzle 7 has a contracted diameter and forms a contraction section. Example

[0028] Nozzle 7 is a Venturi nozzle with a fiberglass construction. As flue gas passes through nozzle 7, it sprays outwards and atomizes the desulfurizing agent, ensuring full contact between the agent and the flue gas for desulfurization. Replacing conventional conical nozzles with high-flow-rate Venturi nozzles achieves the goal of long-term operation and reduces maintenance workload. Example

[0029] Nozzle 7 is a Laval nozzle structure. Multiple guide plates 10 with twist angles are installed at the inlet of nozzle 7. When the desulfurizing agent passes through the guide plates 10, it is initially guided to generate a swirling flow within the nozzle 7. One end of the guide plates 10 is connected to a central tube 11, one end of which is tapered. The central tube 11 is connected to a swirling cone 12 via a guide rod 13. The swirling cone 12 is located on the contraction side, has a rhomboid cross-section, and its inner end face is curved. A drain port is located at the lower end of the swirling cone 12. Multiple arc-shaped force-bearing plates with twist angles are installed on the outer surface of the end of the swirling cone 12 near the guide rod 13. These force-bearing plates on the surface of the swirling cone 12 are used to withstand the impact force of the desulfurizing agent. Under the action of the impact force, the force-bearing plates drive the swirling cone 12 to rotate, indirectly causing the atomized desulfurizing agent to generate a swirling flow through the rotation of the swirling cone 12. The force plate increases the force-bearing area of ​​the swirling cone 12, causing the swirling cone 12 to move downward under the impact of the desulfurizing agent.

[0030] The inner tube 11 is hollow. One end of the guide rod 13 is inserted into the inner tube 11. The end of the guide rod 13 inserted into the inner tube 11 extends outward to form a flat plate. A spring is installed inside the inner tube 11. The spring is sleeved on the guide rod 13 and abuts against the flat plate and the inner tube 11. The guide rod 13 has a hollow structure. A connecting chain is rotatably installed in the middle of the inner tube 11. The connecting chain passes through the guide rod 13 and is connected to a configuration rod 14 at one end. The diameter of the configuration rod 14 is equal to the inner diameter of the guide rod 13. The vortex cone 12 is hollow and has an opening at one end. The configuration rod 14 extends into the vortex cone 12 through the opening. Multiple chains are connected in series near the constriction section of the guide rod 13. The chains divide the guide rod 13 into two sections. The length of the chains is less than the length of the configuration rod 14. When the spring is compressed, under the traction of the connecting chain, the configuration rod 14 enters the guide rod 13 and is located inside the chain. When the spring is at its original length, the configuration rod 14 leaves the configuration rod 14 under its own gravity and enters the vortex cone 12, where it is in an inclined state.

[0031] When no desulfurizing agent is sprayed, the swirl cone 12 and the force plate do not bear external impact force, the spring is at its original length, and under the elastic support of the spring, the guide rod 13 pulls the swirl cone 12 to the outlet side of the contraction section through the chain.

[0032] When the desulfurizing agent is sprayed, it enters the nozzle 7 through the branch pipe 6. When the rapidly flowing desulfurizing agent passes through the upper part of the swirl cone 12, a negative pressure area is formed on the outer side of the lower part of the swirl cone 12. However, under the negative pressure attraction of the negative pressure area, the atomized desulfurizing agent automatically fills the negative pressure area after passing the maximum diameter at the middle position of the swirl cone 12. This allows the atomized desulfurizing agent to completely fill the entire nozzle 7, so that no blank area without desulfurizing agent is generated when the nozzle 7 sprays out the desulfurizing agent. The desulfurizing agent impacts the swirl cone 12 and the force plate in the contraction section. Under the action of the impact force, the swirl cone 12 moves downward and rotates under the drive of the force plate. The rotating swirl cone 12 drives the atomized desulfurizing agent to generate swirl. When the flue gas comes into contact with the atomized desulfurizing agent, the atomized desulfurizing agent generates a swirling flow under the guidance of the swirling cone 12, which generates a tangential attraction to the flue gas, further increasing the probability of contact between the flue gas and the desulfurizing agent. Moreover, the desulfurizing agent gains downward momentum when it is sprayed out. Using the downward momentum and the tangential attraction, the flue gas is further carried into the lower space inside the tower body 1, so that the flue gas is further retained in the tower body 1, increasing the time the flue gas spends in the tower body 1 and improving the flue gas desulfurization effect.

[0033] After the desulfurization tower has been running for a certain period of time, the supply of desulfurizing agent is temporarily stopped. After the impact of the desulfurizing agent is lost, the swirl cone 12 resets under the support of the spring. During the reset process, the swirl cone 12 continues to rotate under the action of inertia. When the configuration rod 14 falls into the swirl cone 12 and is in an inclined state, the configuration rod 14 changes the center of gravity of the swirl cone 12, thereby changing the rotational attitude of the swirl cone 12, causing the swirl cone 12 to tilt during rotation. The tilted swirl cone 12 impacts the contraction section. Through the impact, the adhesion of impurities in the contraction section is reduced or separated. The desulfurizing agent is reintroduced to flush away the impurities from the contraction section, thereby cleaning the impurities in the nozzle 7 and preventing the nozzle 7 from being blocked by impurities.

[0034] The working principle of this invention is as follows: The flue gas requiring desulfurization is fed into the lower space inside the tower body 1 through the input pipe 2. The exhaust motor 16 drives the exhaust fan 17 to rotate via a bevel gear and a platform. The exhaust fan 17 drives the exhaust fan blades 20 to rotate, and the exhaust fan blades 20 tractions the flue gas in the lower space inside the tower body 1, causing the flue gas to flow upwards within the tower body 1. After desulfurization, the flue gas is finally discharged from the tower body 1 through the exhaust fan 17. When it is necessary to change the discharge rate, in addition to changing the rotation speed of the exhaust motor 16, the hollow rotating disk 18 can also be driven, causing the hollow rotating disk 18 to rotate via the gear disk 21, thereby adjusting the tilt angle of the exhaust fan blades 20 within the exhaust fan 17.

[0035] As the flue gas flows upward, the gas-gathering ring 8 gathers the flue gas, causing it to converge below the nozzle 7. When the flue gas passes through the nozzle 7, the nozzle 7 sprays out atomized desulfurizing agent, allowing the desulfurizing agent to come into contact with the flue gas and achieve desulfurization of the flue gas.

[0036] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A desulfurization tower with a high-flow-rate anti-clogging nozzle, characterized in that: The tower body (1) is provided with an inlet and an outlet. An input pipe (2) is inclined at the inlet. An exhaust mechanism (4) and a multi-stage spraying mechanism are provided inside the tower body (1). The spraying mechanism sprays out and atomizes the desulfurizing agent. The flue gas enters the lower space inside the tower body (1) from the input pipe (2). After passing through the multi-stage spraying mechanism, the exhaust mechanism (4) discharges the flue gas from the outlet. The tower body (1) is provided with a transmission pipe (3), and the spraying mechanism includes an annular main pipe (5) installed inside the tower body (1), cross-connected branch pipes (6) set inside the main pipe (5), and nozzles (7) set at the intersection of the branch pipes (6). The branch pipes (6) are connected to the main pipe (5), and the main pipe (5) is connected to the transmission pipe (3). Below the main pipe (5) is a gas-gathering ring (8) that connects to the tower body (1). One end of the gas-gathering ring (8) contracts inward. Above the main pipe (5) is a cover plate (9) that connects to the tower body (1). A section of the nozzle (7) contracts in diameter and forms a contraction section. The nozzle (7) is a Laval nozzle structure. Multiple guide plates (10) with twist angles are provided at the inlet of the nozzle (7). One end of the guide plates (10) is connected to a central tube (11). One end of the central tube (11) is conical. The central tube (11) is connected to a swirling cone (12) through a guide rod (13). The swirling cone (12) is located on the side of the contraction section. The cross section of the swirling cone (12) is rhomboid. Multiple arc-shaped force plates with twist angles are provided on the outer surface of the end of the swirling cone (12) near the guide rod (13). The inner tube (11) is hollow. One end of the guide rod (13) is inserted into the inner tube (11). A flat plate extends outward from one end of the guide rod (13) inserted into the inner tube (11). A spring is installed inside the inner tube (11). The spring is sleeved on the guide rod (13) and abuts against the flat plate and the inner tube (11). The guide rod (13) is hollow. A connecting chain is rotatably installed in the middle of the inner tube (11). The connecting chain passes through the guide rod (13) and is connected to a configuration rod (14) at one end. The diameter of the configuration rod (14) is equal to the inner diameter of the guide rod (13). The inner tube (12) is hollow and has an opening at one end. The configuration rod (14) extends into the vortex cone (12) through the opening. Multiple chains are connected in series near the constriction part of the guide rod (13). The length of the chain is less than the length of the configuration rod (14). When the spring is compressed, under the traction of the connecting chain, the configuration rod (14) enters the guide rod (13) and is located inside the position of the chain; When the spring is at its original length, the configuration rod (14) leaves the guide rod (13) under its own gravity and enters the vortex cone (12), and is in an inclined state inside the vortex cone (12); When no desulfurizing agent is sprayed, the swirling cone (12) and the force plate do not bear external impact force, and the spring is at its original length. Under the elastic support of the spring, the guide rod (13) pulls the swirling cone (12) to the outlet side of the contraction section via the chain. When the desulfurizing agent is sprayed, the desulfurizing agent enters the nozzle (7) through the branch pipe (6) and generates an impact force on the swirling cone (12) and the force plate in the contraction section. Under the action of the impact force, the swirling cone (12) moves downward and rotates under the drive of the force plate. The rotating swirling cone (12) drives the atomized desulfurizing agent to generate a swirling flow. After the desulfurization tower has been running for a certain period of time, the supply of desulfurizing agent is temporarily stopped. After the impact of the desulfurizing agent is lost, Supported by the spring, the swirling cone (12) is reset. During the reset process, the swirling cone (12) continues to rotate under the action of inertia. When the configuration rod (14) falls into the swirling cone (12) and is in an inclined state, the configuration rod (14) changes the center of gravity of the swirling cone (12), thereby changing the rotation posture of the swirling cone (12), causing the swirling cone (12) to tilt during rotation. The tilted swirling cone (12) hits the contraction section. The impact reduces or separates the adhesion of impurities in the contraction section. The desulfurizing agent is reintroduced to flush away the impurities from the contraction section, thereby cleaning the impurities in the nozzle (7) and preventing the nozzle (7) from being blocked by impurities.

2. A desulfurization tower with a high-flow-rate anti-clogging nozzle according to claim 1, characterized in that: The exhaust mechanism (4) includes a converging pipe (15) installed on the tower body (1). One end of the converging pipe (15) is narrowed inward to form a frustum-shaped space. An annular guide rail and a bearing are provided above the converging pipe (15). The bearing and the guide rail are connected to an exhaust fan (17). The exhaust fan (17) is provided with multiple exhaust fan blades (20). An exhaust motor (16) that drives the exhaust fan (17) to rotate is provided on the converging pipe (15).

3. A desulfurization tower with a high-flow-rate anti-clogging nozzle according to claim 2, characterized in that: The exhaust fan (17) has a platform extending outward from one end, and a ring of toothed grooves is provided on the platform. The exhaust motor (16) is symmetrically distributed on both sides of the exhaust fan (17). A bevel gear is provided on the motor shaft of the exhaust motor (16), and the bevel gear meshes with the platform through the toothed grooves. A cross is provided above the exhaust fan (17), and a cylindrical bearing is provided in the middle of the cross. A rotating shaft is provided in the exhaust fan blade (20). One end of the rotating shaft is rotatably mounted on the bearing, and the other end of the rotating shaft passes through the exhaust fan (17) and is equipped with a bevel gear. A hollow rotating disk (18) is provided on the platform of the exhaust fan (17). An annular gear disk (21) is provided at the output end of the hollow rotating disk (18). The gear disk (21) meshes with the bevel gear and drives the transmission. A sleeve (19) is sleeved on the outside of the exhaust fan (17).

4. A desulfurization tower with a high-flow-rate anti-clogging nozzle according to claim 1, characterized in that: The inner end face of the vortex cone (12) is curved, and the lower end of the vortex cone (12) is provided with a drain port.

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