Airflow distributing and guiding device for denitration of high-NOx-concentration flue gas

Abstract

The invention provides a high NOx concentration flue gas denitration gas flow distribution and flow guide device, and relates to the technical field of environmental protection engineering.The device comprises a shell, a connecting rod is rotatably connected to the inner surface of the shell, a flow guide plate is fixedly connected to the outer surface of the connecting rod, and a connecting frame is fixedly connected to the end of the connecting rod; a transverse groove and a vertical groove are formed in the outer surface of the connecting frame, a first positioning rod is slidably connected to the inner surface of the vertical groove, and a positioning frame is rotatably connected to the outer surface of the first positioning rod through a bearing. According to the invention, a stable and uniform gas flow condition is provided for subsequent flue gas treatment, so that a reliable gas flow regulation and control foundation is provided for a flue gas purification link in environmental protection engineering construction, the damage of high-concentration NOx emission to the atmospheric environment in an ecological protection engineering is reduced, and the creation of a cleaner ecological space is assisted.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering technology, and in particular to an airflow distribution and guiding device for denitrification of high NOx concentration flue gas. Background Technology

[0002] With the rapid advancement of industrialization, various industrial production activities have generated large amounts of high-NOx concentration flue gas. NOx, as one of the major air pollutants, not only causes harm such as acid rain and chemical smog, but also seriously threatens human health and causes irreversible damage to the ecological environment. Effective treatment of high-NOx concentration flue gas has always been a critical issue that urgently needs to be addressed in environmental protection engineering and ecological protection projects. Currently, common denitrification technologies include selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR). However, these traditional technologies face many challenges in practical applications. Existing flow guiding devices struggle to accurately control the airflow based on changes in flue gas flow rate and pressure, ensuring its uniform and stable entry into subsequent treatment stages. When the flue gas volume is large or the pressure fluctuates, airflow segregation is prone to occur, leading to localized... Excessive or insufficient flow velocity not only affects the full contact between the denitrification agent and the flue gas, but may also cause excessive pressure impact on local areas of the equipment, shortening its service life. Most devices have fixed spacing of the air distribution network, which cannot adapt to the flue gas flow characteristics under different operating conditions. When the airflow velocity is too fast, the fixed-spacing air distribution network is easily damaged due to excessive pressure. At the same time, it is difficult to ensure the uniform distribution of flue gas across the entire channel cross-section, thereby reducing the denitrification reaction efficiency. In addition, traditional denitrification agent injection methods often have limitations. The fixed nozzle position results in a limited injection range of the denitrification agent, which cannot ensure that the flue gas in every corner can fully contact the denitrification agent. This makes the denitrification reaction uneven, and the denitrification effect in some areas is poor, ultimately making it difficult to stably meet environmental emission standards. To address this, we propose an airflow distribution and guiding device for high NOx concentration flue gas denitrification. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems by proposing an airflow distribution and guiding device for denitrification of high NOx concentration flue gas.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an airflow distribution and guiding device for high NOx concentration flue gas denitrification, comprising a housing, a connecting rod rotatably connected to the inner surface of the housing, a guide plate fixedly connected to the outer surface of the connecting rod, a connecting frame fixedly connected to the end of the connecting rod, a horizontal groove and a vertical groove formed on the outer surface of the connecting frame, a first positioning rod slidably connected to the inner surface of the vertical groove, a positioning frame rotatably connected to the outer surface of the first positioning rod via a bearing, a rack fixedly connected to the outer surface of the positioning frame, a toothed column rotatably connected to the outer surface of the housing via a bearing, the toothed column meshing with the rack, a synchronous belt installed on the outer surface of the housing, teeth fixedly connected to the inner surface of the synchronous belt, the teeth meshing with the toothed column.

[0005] Preferably, a plurality of lifting plates are slidably connected to the inner surface of the housing, and an mounting plate is fixedly connected to the inner surface of the housing. Lifting frames are fixedly connected to the outer surfaces of the plurality of lifting plates and the mounting plate. Support rods are fixedly connected to the outer surfaces of the plurality of lifting frames. Two first support plates are rotatably connected to the opposite side of the top and bottom support rods. Two second support plates are rotatably connected to the outer surfaces of the plurality of middle support rods. The plurality of first support plates at the top and bottom are rotatably connected to adjacent second support plates via bearings, and the plurality of middle second support plates are rotatably connected to each other via bearings.

[0006] Preferably, a second positioning rod is slidably connected to the inner surface of the transverse groove, a positioning plate is fixedly connected to the outer surface of the second positioning rod, a lifting rod is fixedly connected to the upper surface of the positioning plate, a positioning rail is fixedly connected to the upper surface of the lifting rod, and a third positioning rod is fixedly connected to the outer surface of each of the two second support plates, and the two third positioning rods are slidably connected to the positioning rail.

[0007] Preferably, a sealing plate is fixedly connected to the outer surface of each of the multiple lifting frames, and a slot is formed on the upper surface of each of the multiple sealing plates. Each of the multiple sealing plates is slidably connected to an adjacent slot. A dust cover is fixedly connected to the outer surface of the housing. A through hole is formed on the outer surface of the dust cover for the sealing plate to pass through. The multiple lifting frames and sealing plates are slidably connected to the dust cover. An air distribution net is fixedly connected to the outer surface of each of the multiple lifting plates.

[0008] Preferably, the outer surface of the housing is provided with sliding holes for the lifting frame to pass through.

[0009] Preferably, a support frame is fixedly connected inside the housing, and an impeller is installed on the inner surface of the support frame.

[0010] Preferably, one of the lifting plates has an annular groove on its inner surface, and a gear ring, a fixing plate, and a positioning cylinder are fixedly connected to the inner surface of the annular groove. A rotating rod is rotatably connected to the outer surface of one of the lifting plates via a bearing. A gear is fixedly connected to the outer surface of the rotating rod. A rotating frame is movably connected to the surfaces of the annular groove and the fixing plate. A triangular gear is fixedly connected to the outer surface of the rotating frame. The triangular gear meshes between the gear ring and the spur gear. The rotating rod is fixedly connected to the impeller.

[0011] Preferably, a limiting rod is fixedly connected to the outer surface of the positioning cylinder, and a slider is fixedly connected to the outer surface of the rotating frame, with the slider slidably connected to the limiting rod.

[0012] Preferably, a connecting hose is provided on the inner surface of the positioning cylinder, and a nozzle is provided on the other end of the connecting hose. The connecting hose and the nozzle are fixedly installed on the surface of the slider.

[0013] Preferably, a water supply pipe is fixedly connected to the surface of the housing, and the other end of the water supply pipe is connected to the positioning cylinder.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. This invention proposes an airflow distribution and guiding device for denitrification of high NOx concentration flue gas. A rotating gear column drives a rack to move outwards. The rack, via a positioning frame, moves a first positioning rod in the vertical groove of a connecting frame. The rotating connecting frame then drives a connecting rod to rotate, causing the originally horizontally placed guide plate to rotate vertically, thus opening the channel. When the flue gas volume is large, it drives the spaced-apart guide plates to rotate, increasing the number of through-holes in the channel. The guide plate openings at the bottom of the device open in stages. As the gas pressure increases, the multi-stage guide plates gradually open, and the intermittent arrangement of the multi-stage guide plates ensures a more uniform airflow into the pipeline, providing stable and uniform airflow conditions for subsequent flue gas treatment. This provides a reliable airflow control basis for the flue gas purification stage in environmental engineering construction, which is beneficial for reducing the damage to the atmospheric environment caused by high-concentration NOx emissions in ecological protection projects and helps create a cleaner ecological space.

[0015] 2. This invention proposes an airflow distribution and guiding device for high NOx concentration flue gas denitrification. When the airflow is large and all guide plates are open, the connecting frame rotates, pushing the second positioning rod upward. The second positioning rod drives the positioning rail to move via the lifting rod, and pushes the second support plate to rotate. At this time, the lifting frames at the top and bottom of the mounting plate will move equidistantly to the upper and lower sides, thereby causing the air distribution network to move. The mixed gas passes through multiple layers of air distribution network. In addition, the faster the airflow, the larger the interval between the multiple layers of air distribution network, avoiding excessive pressure that could damage the air distribution network, thus ensuring the stability and durability of the device. Under different flue gas flow rates, by adjusting the spacing of the air distribution network, the flue gas can be more evenly distributed across the entire channel cross-section, avoiding airflow segregation, excessively high or low local flow velocities. The uniform flue gas flow distribution allows the flue gas to fully contact and react with the denitrification agent, improving reaction efficiency, removing pollutants more effectively, and improving the quality of flue gas treatment. The high-efficiency flue gas treatment quality not only facilitates the efficient implementation of environmental protection engineering construction and reduces technical difficulties in the treatment process, but also effectively reduces the content of air pollutants in ecological protection projects, promoting the healthy development of the ecological environment.

[0016] 3. This invention proposes an airflow distribution and guiding device for high NOx concentration flue gas denitrification. When the flue gas passes through the impeller, the rotating rod drives the external triangular gear to rotate via a spur gear, and simultaneously meshes with the gear ring to rotate. During the rotation, the rotating frame rotates, effectively dispersing the passing flue gas. This transforms the flue gas flow, which may have been concentrated or bundled, into a more dispersed and turbulent flow. This significantly increases the contact area and contact opportunities between the flue gas and the sprayed denitrification agent, allowing for more thorough mixing. After the flue gas is dispersed, its various components are more evenly distributed, avoiding localized excessively high or low concentrations. This improves the overall efficiency of the denitrification reaction, resulting in a more significant denitrification effect. It can more effectively reduce the pollutant content in the flue gas, significantly reducing the burden of subsequent treatment in environmental protection projects. In ecological protection projects, it can effectively mitigate the harm of NOx to the ecosystem and maintain ecological balance.

[0017] 4. This invention proposes an airflow distribution and guiding device for denitrification of high NOx concentration flue gas. When the impeller drives the rotating frame to rotate, it simultaneously drives the top slider to slide along the limiting rod. At this time, the water supply pipe sends the denitrification agent into the connecting flexible rod along the water supply pipe and sprays it out through the nozzle. The denitrification agent sprayed from the nozzle comes into contact with the flue gas and performs denitrification treatment. Because the nozzle position is constantly changing, the denitrification agent can be in full contact with the flue gas to the maximum extent, greatly expanding the spray range of the denitrification agent and ensuring that the flue gas in every corner has the opportunity to fully contact the denitrification agent. This avoids the problem of local denitrification agent concentration being too high or too low when spraying at a fixed position. The reaction between the denitrification agent and the flue gas is also more uniform, further improving the stability and consistency of the denitrification effect. This makes the pollutant content in the final discharged flue gas more stable and easier to meet environmental emission standards. Stable and compliant emissions provide a standard treatment result reference for environmental protection engineering construction. In ecological protection engineering, it can continuously and stably improve air quality and lay a solid foundation for the long-term protection of the ecological environment.

[0018] 5. This invention proposes an airflow distribution and guiding device for high NOx concentration flue gas denitrification. It utilizes a multi-layered, progressively larger mesh size distribution network for uniform airflow. This network effectively disperses the flue gas, and the gradually decreasing mesh size slows down the gas flow, resulting in a more uniform and gentler gas distribution and more stable airflow. This ensures the flue gas passes evenly through the subsequent catalyst layer, improving the denitrification reaction efficiency. This high efficiency accelerates environmental protection engineering construction, reduces construction time, and rapidly reduces NOx emissions in ecological protection projects, playing a positive role in improving air quality and protecting the ecological environment. Attached Figure Description

[0019] Figure 1 This invention presents a schematic diagram of the external structure of an airflow distribution and flow guiding device for denitrification of high NOx concentration flue gas. Figure 2 This invention presents a partial cross-sectional view of the airflow distribution and flow guiding device for denitrification of high NOx concentration flue gas. Figure 3 This invention presents a partial structural diagram of a lifting plate for a high NOx concentration flue gas denitrification airflow distribution and flow guiding device. Figure 4 This invention presents a schematic diagram of a partial structure of a rotating rod in a high NOx concentration flue gas denitrification airflow distribution and flow guiding device. Figure 5 This invention presents a partial structural diagram of the positioning cylinder of an airflow distribution and flow guiding device for high NOx concentration flue gas denitrification. Figure 6This invention presents a schematic diagram of a partial structure of a guide plate for a high NOx concentration flue gas denitrification airflow distribution and guide device. Figure 7 A partial structural diagram of a lifting frame for a high NOx concentration flue gas denitrification airflow distribution and flow guiding device is provided for this invention. Figure 8 This invention presents a partial cross-sectional view of the positioning frame of a high NOx concentration flue gas denitrification airflow distribution and flow guiding device.

[0020] Legend: 1. Housing; 2. Connecting rod; 3. Guide plate; 4. Connecting frame; 5. Horizontal groove; 6. Vertical groove; 7. First positioning rod; 8. Positioning frame; 9. Rack; 10. Gear column; 11. Synchronous belt; 12. Tooth; 13. Lifting plate; 14. Lifting frame; 15. Support rod; 16. First support plate; 17. Second support plate; 18. Second positioning rod; 19. Positioning plate; 20. Lifting rod; 21. Positioning rail; 22. 23. Third positioning rod; 24. Sealing plate; 25. Slot; 26. Dust cover; 27. Through hole; 28. Sliding hole; 29. ​​Support frame; 30. Impeller; 31. Air distribution net; 32. Annular groove; 33. Gear ring; 34. Rotating rod; 35. Spur gear; 36. Rotating frame; 37. Triangular gear; 38. Limiting rod; 39. Sliding block; 40. Connecting hose; 41. Nozzle; 42. Water supply pipe; 43. Fixing plate; 44. Positioning cylinder. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] 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 than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1 - Figure 8As shown, an airflow distribution and guiding device for denitrification of high NOx concentration flue gas includes a housing 1. A connecting rod 2 is rotatably connected to the inner surface of the housing 1. A guide plate 3 is fixedly connected to the outer surface of the connecting rod 2. A connecting frame 4 is fixedly connected to the end of the connecting rod 2. A horizontal groove 5 and a vertical groove 6 are formed on the outer surface of the connecting frame 4. A first positioning rod 7 is slidably connected to the inner surface of the vertical groove 6. A positioning frame 8 is rotatably connected to the outer surface of the first positioning rod 7 through a bearing. A rack 9 is fixedly connected to the outer surface of the positioning frame 8. A toothed column 10 is rotatably connected to the outer surface of the housing 1 through a bearing. The toothed column 10 meshes with the rack 9. A synchronous belt 11 is installed on the outer surface of the housing 1. Teeth 12 are fixedly connected to the inner surface of the synchronous belt 11. Teeth 12 mesh with the toothed column 10.

[0024] The effect is that the teeth 12 on the surface of the synchronous belt 11 move accordingly, performing counterclockwise transmission, which in turn drives the inner teeth 12 to rotate counterclockwise. The teeth 12 near the top mesh with the outer tooth column 10, driving the tooth column 10 to rotate counterclockwise. The rotation of the tooth column 10 drives the rack 9 to move outward. The rack 9 pulls the positioning frame 8 to move. The positioning frame 8 drives the first positioning rod 7 to move in the vertical groove 6 of the connecting frame 4. When the first positioning rod 7 moves, it pushes the connecting frame 4 to rotate. The connecting frame 4 drives the connecting rod 2 to rotate. The connecting rod 2 drives the guide plate 3 to rotate. The originally horizontally placed guide plate 3 rotates in the vertical direction, thus opening the channel. The flue gas can enter the shell 1 and flow upward. When the flue gas volume is large, the synchronous belt 11 continues to drive, driving the teeth 12 near the bottom to mesh with another tooth column 10, causing the rack 9 on the other side to move. Similarly, the guide plate 3 is driven to rotate through the connecting frame 4, increasing the number of through holes 26 in the channel. When the second set of guide plates 3 is opened.

[0025] like Figure 1 - Figure 8As shown, multiple lifting plates 13 are slidably connected to the inner surface of the housing 1, and a mounting plate is fixedly connected to the inner surface of the housing 1. Lifting frames 14 are fixedly connected to the outer surfaces of the multiple lifting plates 13 and the mounting plate. Support rods 15 are fixedly connected to the outer surfaces of the multiple lifting frames 14. Two first support plates 16 are rotatably connected to opposite sides of the top and bottom support rods 15. Two second support plates 17 are rotatably connected to the outer surfaces of the multiple middle support rods 15. The top and bottom first support plates 16 are rotatably connected to adjacent second support plates 17 via bearings, and the multiple middle second support plates 17 are rotatably connected to each other via bearings. A second positioning rod 18 is slidably connected to the inner surface of the transverse groove 5, and a positioning plate 19 is fixedly connected to the outer surface of the second positioning rod 18. The upper surface of the positioning plate 19... A lifting rod 20 is fixedly connected to the surface of the housing 1. A positioning rail 21 is fixedly connected to the upper surface of the lifting rod 20. A third positioning rod 22 is fixedly connected to the outer surface of each of the two second support plates 17. The two third positioning rods 22 are slidably connected to the positioning rail 21. A sealing plate 23 is fixedly connected to the outer surface of each of the multiple lifting frames 14. A slot 24 is opened on the upper surface of each of the multiple sealing plates 23. Each of the multiple sealing plates 23 is slidably connected to the adjacent slot 24. A dust cover 25 is fixedly connected to the outer surface of the housing 1. A through hole 26 is opened on the outer surface of the dust cover 25 for the sealing plate 23 to pass through. The multiple lifting frames 14 and the sealing plate 23 are slidably connected to the dust cover 25. A wind distribution net 30 is fixedly connected to the outer surface of each of the multiple lifting plates 13. A sliding hole 27 is opened on the outer surface of the housing 1 for the lifting frame 14 to pass through.

[0026] The effect is as follows: the second positioning rod 18 slides in the transverse groove 5, the connecting frame 4 rotates, pushing the second positioning rod 18 to move upward. The second positioning rod 18 drives the top positioning plate 19 to rise, the positioning plate 19 drives the lifting rod 20 to rise, the lifting rod 20 drives the positioning rail 21 to move, the positioning rail 21 is slidably connected to the third positioning rod 22, the third positioning rod 22 pushes the second support plate 17 to rotate, the second support plates 17 are rotatably connected to each other and rotatably connected to the first support plate 16, the lifting frame 14 in the middle position is fixed to the mounting plate, the position of the mounting plate remains unchanged, when the second support plate 17 near the mounting plate rotates, the lifting frames 14 at the top and bottom of the mounting plate will move upward and downward on both sides at equal distances, the lifting frame 14 drives the lifting plate 13 to move, the lifting plate 13 drives the air distribution net 30 to move, the mesh of the air distribution net 30 gradually becomes smaller as it is set upward.

[0027] like Figure 1 - Figure 8As shown, a support frame 28 is fixedly connected inside the housing 1. An impeller 29 is installed on the inner surface of the support frame 28. An annular groove 31 is formed on the inner surface of one of the lifting plates 13. A gear ring 32, a fixed plate 42, and a positioning cylinder 43 are fixedly connected to the inner surface of the annular groove 31. A rotating rod 33 is rotatably connected to the outer surface of one of the lifting plates 13 via a bearing. A gear is fixedly connected to the outer surface of the rotating rod 33. A rotating frame 35 is movably connected to the surfaces of the annular groove 31 and the fixed plate 42. A triangular gear 36 is fixedly connected to the outer surface of the rotating frame 35. 6. The gear ring 32 and the spur gear 34 are meshed together. The rotating rod 33 is fixedly connected to the impeller 29. The outer surface of the positioning cylinder 43 is fixedly connected to the limit rod 37. The outer surface of the rotating frame 35 is fixedly connected to the slider 38. The slider 38 is slidably connected to the limit rod 37. The inner surface of the positioning cylinder 43 is connected to the connecting hose 39. The other end of the connecting hose 39 is connected to the nozzle 40. The connecting hose and the nozzle 40 are fixedly installed on the surface of the slider 38. The surface of the housing 1 is fixedly connected to the water supply pipe 41. The other end of the water supply pipe 41 is connected to the positioning cylinder 43.

[0028] The effect is as follows: when the flue gas passes through the impeller 29, it drives the impeller 29 to rotate. The impeller 29 drives the rotating rod 33 to rotate, the rotating rod 33 drives the spur gear 34 to rotate, and the spur gear 34 drives the external triangular gear 36 to rotate. The triangular gear 36 is a Reylock triangle and can mesh with the gear ring 32 and rotate on its own. During the rotation, it drives the rotating frame 35 to rotate. The rotating frame 35 disperses the airflow and drives the top slider 38 to move. Since the distance between the center point of the triangular gear 36 and the center point of the spur gear 34 is constantly changing, the slider 38 can slide along the limiting rod 37 under the limiting action of the limiting rod 37. At this time, the nozzle 40 switch of the water supply pipe 41 is turned on. The water supply pipe 41 is connected to an external water pump, which can send the denitrification agent into the connecting flexible rod along the water supply pipe 41 and spray it out through the nozzle 40. The denitrification agent sprayed by the nozzle 40 comes into contact with the flue gas and performs denitrification treatment on it. Because the position of the nozzle 40 is constantly changing, the denitrification agent can be in full contact with the flue gas to the maximum extent.

[0029] Working principle: The device is installed on the flue gas outlet duct. When the synchronous belt 11 is started, the teeth 12 on the surface of the synchronous belt 11 move counterclockwise, thus driving the inner teeth 12 to rotate counterclockwise. The teeth 12 near the top mesh with the outer toothed column 10, driving the toothed column 10 to rotate counterclockwise. The rotation of the toothed column 10 causes the rack 9 to move outward. The rack 9 pulls the positioning frame 8 to move. The positioning frame 8 drives the first positioning rod 7 to move in the vertical groove 6 of the connecting frame 4. When the first positioning rod 7 moves, it pushes the connecting frame 4 to rotate. The connecting frame 4 drives the connecting rod 2 to rotate. The connecting rod 2 drives the guide plate 3 to rotate. The originally horizontally placed guide plate 3 rotates in the vertical direction, thus opening the channel and allowing the flue gas to enter the housing 1. The gas flows upwards. When the flue gas volume is large, the synchronous belt 11 continuously drives the gear 12 near the bottom to mesh with another gear column 10, causing the rack 9 on the other side to move. Similarly, the connecting frame 4 drives the guide plate 3 to rotate, increasing the number of through holes 26 in the channel. When the second set of guide plates 3 opens, the second positioning rod 18 slides in the transverse groove 5. The connecting frame 4 rotates, pushing the second positioning rod 18 to move upwards. The second positioning rod 18 drives the top positioning plate 19 to rise. The positioning plate 19 drives the lifting rod 20 to rise. The lifting rod 20 drives the positioning rail 21 to move. The positioning rail 21 is slidably connected to the third positioning rod 22. The third positioning rod 22 pushes the second support plate 17 to rotate. The second support plates 17 rotate in relation to each other. The mounting plate is rotatably connected to the first support plate 16. It is positioned centrally among the multiple lifting frames 14, with the middle lifting frame 14 fixed to the mounting plate. The mounting plate remains in its position. When the second support plate 17, located near the mounting plate, rotates, the lifting frames 14 at the top and bottom of the mounting plate move equidistantly upwards and downwards. The lifting frames 14 drive the lifting plate 13 to move, which in turn drives the air distribution mesh 30 to move. The mesh size of the air distribution mesh 30 gradually decreases as it ascends. When the flue gas passes through the impeller 29, it drives the impeller 29 to rotate. The impeller 29 drives the rotating rod 33 to rotate, which in turn drives the spur gear 34 to rotate. The spur gear 34 then drives the external triangular gear 36 to rotate. This triangular gear 36 is a Leicester... The triangular gear 36 can mesh with the gear ring 32 and rotate. During the rotation, it drives the rotating frame 35 to rotate. The rotating frame 35 disperses the airflow and moves the top slider 38. Since the distance between the center point of the triangular gear 36 and the center point of the spur gear 34 is constantly changing, the slider 38 can slide along the limiting rod 37 under the limiting action of the limiting rod 37. At this time, the nozzle 40 switch of the water supply pipe 41 is turned on. The water supply pipe 41 is connected to an external water pump, which can send the denitrification agent into the connecting flexible rod along the water supply pipe 41 and spray it out through the nozzle 40. The denitrification agent sprayed by the nozzle 40 comes into contact with the flue gas and performs denitrification treatment. Because the position of the nozzle 40 is constantly changing, the denitrification agent can be in full contact with the flue gas to the maximum extent.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A gas flow distribution and guiding device for denitrification of high NOx concentration flue gas, comprising a housing (1), characterized in that: A connecting rod (2) is rotatably connected to the inner surface of the housing (1). A guide plate (3) is fixedly connected to the outer surface of the connecting rod (2). A connecting frame (4) is fixedly connected to the end of the connecting rod (2). A horizontal groove (5) and a vertical groove (6) are provided on the outer surface of the connecting frame (4). A first positioning rod (7) is slidably connected to the inner surface of the vertical groove (6). A positioning frame (8) is rotatably connected to the outer surface of the first positioning rod (7) through a bearing. A rack (9) is fixedly connected to the outer surface of the positioning frame (8). A toothed column (10) is rotatably connected to the outer surface of the housing (1) through a bearing. The toothed column (10) meshes with the rack (9). A synchronous belt (11) is installed on the outer surface of the housing (1). Teeth (12) are fixedly connected to the inner surface of the synchronous belt (11). Teeth (12) mesh with the toothed column (10).

2. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 1, characterized in that: Multiple lifting plates (13) are slidably connected to the inner surface of the housing (1). An installation plate is fixedly connected to the inner surface of the housing (1). Lifting frames (14) are fixedly connected to the outer surfaces of the multiple lifting plates (13) and the installation plate. Support rods (15) are fixedly connected to the outer surfaces of the multiple lifting frames (14). Two first support plates (16) are rotatably connected to the opposite side of the top and bottom support rods (15). Two second support plates (17) are rotatably connected to the outer surfaces of the multiple middle support rods (15). The top and bottom multiple first support plates (16) are rotatably connected to the adjacent second support plates (17) through bearings. The multiple middle second support plates (17) are rotatably connected to each other through bearings.

3. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 2, characterized in that: The inner surface of the transverse groove (5) is slidably connected to a second positioning rod (18), the outer surface of the second positioning rod (18) is fixedly connected to a positioning plate (19), the upper surface of the positioning plate (19) is fixedly connected to a lifting rod (20), the upper surface of the lifting rod (20) is fixedly connected to a positioning rail (21), and the outer surfaces of the two second support plates (17) are fixedly connected to a third positioning rod (22), and the two third positioning rods (22) are slidably connected to the positioning rail (21).

4. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 2, characterized in that: A sealing plate (23) is fixedly connected to the outer surface of each of the multiple lifting frames (14). A slot (24) is provided on the upper surface of each of the multiple sealing plates (23). Each of the multiple sealing plates (23) is slidably connected to the adjacent slot (24). A dust cover (25) is fixedly connected to the outer surface of the housing (1). A through hole (26) for the sealing plate (23) to pass through is provided on the outer surface of the dust cover (25). The multiple lifting frames (14) and the sealing plates (23) are slidably connected to the dust cover (25). A wind distribution net (30) is fixedly connected to the outer surface of each of the multiple lifting plates (13).

5. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 1, characterized in that: The outer surface of the housing (1) is provided with a sliding hole (27) for the lifting frame (14) to pass through.

6. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 1, characterized in that: The housing (1) is fixedly connected to a support frame (28), and an impeller (29) is installed on the inner surface of the support frame (28).

7. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 4, characterized in that: One of the lifting plates (13) has an annular groove (31) on its inner surface. A gear ring (32), a fixing plate (42), and a positioning cylinder (43) are fixedly connected to the inner surface of the annular groove (31). A rotating rod (33) is rotatably connected to the outer surface of one of the lifting plates (13) via a bearing. A spur gear (34) is fixedly connected to the outer surface of the rotating rod (33). A rotating frame (35) is movably connected to the surfaces of the annular groove (31) and the fixing plate (42). A triangular gear (36) is fixedly connected to the outer surface of the rotating frame (35). The triangular gear (36) meshes between the gear ring (32) and the spur gear (34). The rotating rod (33) is fixedly connected to the impeller (29).

8. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 7, characterized in that: The outer surface of the positioning cylinder (43) is fixedly connected to a limiting rod (37), and the outer surface of the rotating frame (35) is fixedly connected to a slider (38), which is slidably connected to the limiting rod (37).

9. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 8, characterized in that: The inner surface of the positioning cylinder (43) is connected to a connecting hose (39), and the other end of the connecting hose (39) is connected to a nozzle (40). The connecting hose and the nozzle (40) are fixedly installed on the surface of the slider (38).

10. The airflow distribution and guiding device for high NOx concentration flue gas denitrification according to claim 1, characterized in that: A water supply pipe (41) is fixedly connected to the surface of the housing (1), and the other end of the water supply pipe (41) is connected to the positioning cylinder (43).

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