Waste gas treatment and discharge equipment for boiler

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a waste gas treatment and discharge device for a boiler, the waste gas treatment and discharge device comprises a spray tower body, one side of the spray tower body is fixedly connected with a gas inlet pipe, a plurality of annular shells are arranged in the spray tower body, the annular shell located at the outer ring is fixedly connected with the inner wall of the spray tower body, and the annular shell located at the inner ring is fixedly connected with the spray tower body. The device comprises a plurality of annular shells, the annular shells fixedly communicate with one another, the upper ends of the annular shells fixedly communicate with a plurality of spiral hoses, and supporting assemblies are fixedly mounted at the upper ends of the annular shells. Gas enters the first spherical shell through a gas inlet pipe to be in direct and full contact with liquid and then rises to be separated from the first spherical shell; the first spherical shell and the second spherical shell are arranged in the spray tower body and make contact with sprayed liquid, at the moment, a plurality of gas guide holes of the second spherical shell are all located above the annular baffle, the first spherical shell and the second spherical shell form a sealed environment in the spray tower body, the retention time of gas in the spray tower body is prolonged, and the gas reacts with the sprayed liquid more thoroughly.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment and emission device for boilers. Background Technology

[0002] Boilers are core thermal equipment for industrial production, thermal power generation, and district heating. During their operation, they burn a large amount of fossil fuels (such as coal, natural gas, and heavy oil), which in turn produces industrial waste gas with complex composition and high toxicity. Currently, factories generally use spray towers to treat waste gas.

[0003] The existing spray tower is connected from top to bottom. Exhaust gas enters the spray tower through the inlet pipe, passes through the packing layer, and is then sprayed. The treated exhaust gas can be discharged. Because the exhaust gas is continuously input, some exhaust gas will not come into contact with the sprayed liquid and will be discharged. Some spray towers have added multiple nozzles to increase the spray density, but some gas still cannot come into contact with the sprayed liquid. The gas continues to enter and is quickly discharged after passing through the spray tower. Some gas may only have brief contact with the liquid and no reaction or incomplete reaction may occur before being discharged, resulting in incomplete exhaust gas treatment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a boiler exhaust gas treatment and emission device that increases the residence time of gas within the spray tower during the exhaust gas treatment process, allowing for a more thorough reaction with the spray liquid.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a boiler exhaust gas treatment and emission device, comprising a spray tower body, an air inlet pipe fixedly connected to one side of the spray tower body, a plurality of annular shells disposed within the spray tower body, the outermost annular shells being fixedly connected to the inner wall of the spray tower body, the plurality of annular shells being fixedly connected to each other, a plurality of spiral hoses being fixedly connected to the upper end of each annular shell, a support assembly being fixedly installed at the upper end of each annular shell, the support assembly comprising a plurality of annular plates, a plurality of nozzles being rotatably mounted through the annular plates, the outlets of the nozzles facing upwards, the lower ends of the nozzles being fixedly connected to the spiral hoses, and a rotating assembly for controlling the rotation of the plurality of nozzles being slidably disposed on the annular plates. Below the annular shell, a first spherical shell is provided. A spherical packing layer is fixedly installed on the inner wall of the first spherical shell. An opening is provided on the outer side of the first spherical shell, and an arc-shaped packing layer is provided inside the opening. One side of the first spherical shell is rotatably connected to the air inlet pipe. A sleeve fixedly connected to the first spherical shell is slidably fitted on the outer wall of the air inlet pipe. A sealing assembly is provided above the nozzle. The sealing assembly includes a second spherical shell. A rotating shaft is fixedly installed on one side of the second spherical shell. A conveying assembly is provided between the rotating shaft and the sleeve. The conveying assembly is used to control the rotation of the first spherical shell and the second spherical shell. A telescopic member is provided between the second spherical shell and the annular shell to control the rotation of the rotating assembly.

[0006] Preferably, the support assembly further includes a support column fixedly disposed between the annular plate and the annular shell.

[0007] Preferably, the sealing assembly further includes an annular baffle fixedly installed on the inner wall of the spray tower body, the second spherical shell slides in contact with the inner wall of the annular baffle, the rotating shaft is rotatably connected to the annular baffle, one end of the rotating shaft passes through the spray tower body, and a plurality of air guide holes are opened through one half of the outer arc surface of the second spherical shell.

[0008] Preferably, the conveying assembly includes pulleys fixedly sleeved on the sleeve and the rotating shaft, a conveyor belt sleeved between the two pulleys, a protective shell fixedly connected to the spray tower body on the outside of the pulleys and the conveyor belt, a motor fixedly installed on the outside of the protective shell, and the output end of the motor fixedly connected to the rotating shaft.

[0009] Preferably, the rotating assembly includes a plurality of first toothed rings fixedly sleeved on the outside of the nozzle, and a second toothed ring is provided at the upper end of each of the plurality of annular plates. The first toothed rings mesh with the second toothed rings, and a connecting plate that is slidably connected to the annular plate is fixedly provided between the plurality of second toothed rings.

[0010] Preferably, the telescopic component includes a first magnet and a second magnet fixedly installed inside the second spherical shell. A first ring is fixedly installed on the inner wall of the annular shell located in the inner circle. A second ring is fixedly connected to the inner wall of the second toothed ring located in the inner circle. A spiral groove is formed on the inner wall of the second ring. A rotating rod is slidably arranged on the inner wall of the first ring. A third magnet that attracts the first magnet is fixedly connected to the upper end of the rotating rod. The third magnet repels the second magnet. A spiral sleeve that is slidably connected to the spiral groove is sleeved on the outer side of the rotating rod.

[0011] Preferably, the arc-shaped packing layer and the spherical packing layer are an integral piece.

[0012] Preferably, a water inlet pipe is fixedly connected to one side of the annular shell on the outer ring, and the water inlet pipe is fixedly connected to an external water supply device.

[0013] Preferably, a guide ring is fixedly installed on the inner wall of the spray tower body, the lower end of the guide ring is connected to the opening of the first spherical shell, and the lower end of the guide ring is in sliding contact with the first spherical shell and the second spherical shell.

[0014] Preferably, when the opening of the first spherical shell is located directly above, the multiple air guide holes are all located above the annular baffle to form a sealed state.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention involves installing a first spherical shell inside the spray tower body, fixing a spherical packing layer on the inner wall of the first spherical shell, and setting an arc-shaped packing layer in the opening on the outer side of the first spherical shell. The first spherical shell is filled with spray liquid. Gas enters the first spherical shell through the air inlet pipe and comes into direct and full contact with the liquid. Then, it rises and leaves the first spherical shell, and comes into contact with the spray liquid again. At this time, multiple air guide holes of the second spherical shell are located above the annular baffle. The first spherical shell and the second spherical shell form a sealed environment inside the spray tower body, increasing the residence time of the gas in the spray tower body and making its reaction with the spray liquid more thorough.

[0016] 2. This invention fixes first toothed rings on the outer sides of multiple nozzles and sets second toothed rings on the upper ends of multiple annular plates. The first toothed rings mesh with the second toothed rings. A connecting plate that is slidably connected to the annular plates is fixed between the multiple second toothed rings. By controlling the rotation of the multiple second toothed rings, the nozzles can be rotated through the first toothed rings. The outlet of the nozzle is not located in the middle position of the upper end of the nozzle. The position of multiple outlets can be controlled to change, continuously changing the spray position, so that the gas and spray liquid can have better contact. Moreover, the outlet of the nozzle faces upward, reducing the contact between the outlet and the gas. Since the gas may contain impurities such as oil and ash, the possibility of the outlet of the nozzle being blocked is reduced.

[0017] 3. The present invention fixes multiple spiral hoses to the upper end of the annular shell, and fixes the lower end of the nozzle to the spiral hoses. When the multiple nozzles are rotated, the spiral hoses deform, eliminating the need to directly install the nozzles on the annular shell. This avoids poor sealing due to rotation, which could affect water pressure and thus the spraying effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a frontal cross-sectional view of the spray tower body of the present invention; Figure 3 This is a schematic diagram of the overall rear-view three-dimensional structure of the present invention; Figure 4 This is a frontal three-dimensional cross-sectional structural diagram of the spray tower body and protective shell of the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the telescopic component, the support assembly, and the rotating assembly of the present invention; Figure 6 This is a three-dimensional cross-sectional structural diagram of the first spherical shell, the arc-shaped packing layer, and the spherical packing layer of the present invention; Figure 7 This is a schematic diagram showing the disassembled structure of the telescopic component, support assembly, and rotating assembly of the present invention; Figure 8 for Figure 7 A magnified structural diagram of A in the middle; Figure 9 This is a three-dimensional cross-sectional structural diagram of the second spherical shell of the present invention; Figure 10 for Figure 9 A magnified structural diagram of B in the diagram.

[0019] In the diagram: 1. Spray tower body; 2. Motor; 3. Protective shell; 4. Air inlet pipe; 5. First spherical shell; 6. Pulley; 7. Conveyor belt; 8. Sleeve; 9. Second spherical shell; 10. Air guide hole; 11. Arc-shaped packing layer; 12. Guide ring; 13. Annular baffle; 14. Rotating shaft; 15. Annular shell; 16. Water inlet pipe; 17. Spray head; 18. Spiral hose; 19. First toothed ring; 20. Second toothed ring; 21. Support column; 22. Spiral sleeve; 23. Second ring; 24. Annular plate; 25. Rotating rod; 26. Third magnet; 27. Spiral groove; 28. Connecting plate; 29. ​​First ring; 30. First magnet; 31. Second magnet; 32. Spherical packing layer. Detailed Implementation

[0020] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0021] Please see Figures 1-10 A boiler exhaust gas treatment and emission device includes a spray tower body 1. An air inlet pipe 4 is fixedly connected to one side of the spray tower body 1. Multiple annular shells 15 are disposed inside the spray tower body 1. The outer annular shells 15 are fixedly connected to the inner wall of the spray tower body 1, and the multiple annular shells 15 are fixedly connected to each other. A water inlet pipe 16 is fixedly connected to one side of the outer annular shells 15 and is fixedly connected to an external water supply device. Multiple spiral hoses 18 are fixedly connected to the upper end of the annular shells 15. A support assembly is fixedly installed on the upper end of the annular shells 15. The support assembly includes multiple annular plates 24. Multiple nozzles 17 are rotatably mounted through the annular plates 24. The lower ends of the nozzles 17 are connected to the spiral hoses 18. The ring plate 24 is fixedly connected and has a rotating assembly that controls the rotation of multiple nozzles 17. The outlet of the nozzle 17 is not located in the middle of the upper end of the nozzle 17. The operation of the rotating assembly can control the position of multiple outlets to change, continuously changing the spray position, so that the gas and spray liquid can have better contact. The outlet of the nozzle 17 faces upward, reducing the contact between the outlet and the gas. Since the gas may contain impurities such as oil and ash, the possibility of the outlet of the nozzle 17 being blocked is reduced. When controlling the rotation of multiple nozzles 17, the spiral hose 18 deforms, so there is no need to install the nozzle 17 directly on the annular housing 15. This avoids the water pressure being affected due to poor sealing caused by the rotation, which in turn affects the spraying effect. Below the annular shell 15, a first spherical shell 5 is provided. A spherical packing layer 32 is fixedly installed on the inner wall of the first spherical shell 5. An opening is provided on the outer side of the first spherical shell 5, and an arc-shaped packing layer 11 is provided inside the opening. The arc-shaped packing layer 11 and the spherical packing layer 32 are integral parts. One side of the first spherical shell 5 is rotatably connected to the air inlet pipe 4. A sleeve 8 fixedly connected to the first spherical shell 5 is slidably fitted on the outer wall of the air inlet pipe 4. A sealing assembly is provided above the nozzle 17. The sealing assembly includes a second spherical shell 9, and a rotating shaft 1 is fixedly installed on one side of the second spherical shell 9. 4. A conveying assembly is provided between the rotating shaft 14 and the sleeve 8. The sealing assembly also includes an annular baffle 13 fixedly installed on the inner wall of the spray tower body 1. The second spherical shell 9 slides in contact with the inner wall of the annular baffle 13. The rotating shaft 14 is rotatably connected to the annular baffle 13. One end of the rotating shaft 14 penetrates through the spray tower body 1. A plurality of air guide holes 10 are opened through half of the outer arc surface of the second spherical shell 9. A flow guide ring 12 is fixedly installed on the inner wall of the spray tower body 1. The lower end of the flow guide ring 12 communicates with the opening of the first spherical shell 5. The lower end of the flow guide ring 12 connects the first spherical shell 5 and the second spherical shell 8. When the opening of the first spherical shell 5 is directly above the second spherical shell 9, multiple air guide holes 10 are located above the annular baffle 13 to form a seal. The first spherical shell 5 is filled with spray liquid. Gas enters the first spherical shell 5 through the air inlet pipe 4 and comes into direct and full contact with the liquid. Then it rises and leaves the first spherical shell 5, and comes into contact with the spray liquid again. At this time, multiple air guide holes 10 of the second spherical shell 9 are located above the annular baffle 13. The first spherical shell 5 and the second spherical shell 9 are in contact with the spray tower body 1. A sealed environment is formed inside, increasing the residence time of the gas in the spray tower body 1, so that it reacts more thoroughly with the spray liquid. The conveying component is used to control the rotation of the first spherical shell 5 and the second spherical shell 9. Then, the first spherical shell 5 and the second spherical shell 9 are controlled to rotate simultaneously by the conveying component. During the rotation, some of the spray liquid in the first spherical shell 5 can leak down from the opening, and the treated gas in the spray tower body 1 can be discharged through the air guide hole 10. An expansion joint for controlling the rotation of the rotation component is provided between the second spherical shell 9 and the annular shell 15.

[0022] As a further technical solution of the present invention, the support assembly also includes a support column 21 fixedly disposed between the annular plate 24 and the annular shell 15. The conveying assembly includes a pulley 6 fixedly sleeved on the sleeve 8 and the rotating shaft 14. A conveying belt 7 is sleeved between the two pulleys 6. A protective shell 3 fixedly connected to the spray tower body 1 is disposed on the outside of the pulleys 6 and the conveying belt 7. A motor 2 is fixedly installed on the outside of the protective shell 3. The output end of the motor 2 is fixedly connected to the rotating shaft 14. When the motor 2 is started, the second spherical shell 9 and the first spherical shell 5 can be driven to rotate synchronously through the cooperation of the pulleys 6 and the conveying belt 7.

[0023] As a further technical solution of the present invention, the rotating assembly includes a plurality of first toothed rings 19 fixedly sleeved on the outside of the nozzle 17, and a plurality of annular plates 24 are provided with second toothed rings 20 at their upper ends. The first toothed rings 19 and the second toothed rings 20 mesh with each other. A connecting plate 28 that is slidably connected to the annular plate 24 is fixedly arranged between the plurality of second toothed rings 20. By controlling the rotation of the plurality of second toothed rings 20, the nozzle 17 can be driven to rotate through the first toothed rings 19, which is used to control the change of the position of the plurality of water outlets and continuously change the spray position so that the gas and the spray liquid can have better contact.

[0024] As a further technical solution of the present invention, the telescopic component includes a first magnet 30 and a second magnet 31 fixedly installed inside the second spherical shell 9. A first ring 29 is fixedly installed on the inner wall of the annular shell 15 located in the inner ring. A second ring 23 is fixedly connected to the inner wall of the second toothed ring 20 located in the inner ring. A spiral groove 27 is opened on the inner wall of the second ring 23. A rotating rod 25 is slidably arranged on the inner wall of the first ring 29. A third magnet 26 that attracts the first magnet 30 is fixedly connected to the upper end of the rotating rod 25. The third magnet 26 repels the second magnet 31 (the second spherical shell 9 and the rotating rod 2). All 5 are made of non-ferromagnetic materials (non-ferromagnetic materials will not be magnetized). The outer side of the rotating rod 25 is fitted with a spiral sleeve 22 that is slidably connected to the spiral groove 27. During the process of the motor 2 controlling the second spherical shell 9 and the first spherical shell 5 to rotate synchronously, the second spherical shell 9 can control the rotating rod 25 to move vertically up and down repeatedly through the cooperation of the first magnet 30, the second magnet 31 and the third magnet 26. When the rotating rod 25 drives the spiral sleeve 22 to move up and down, it drives the second ring 23 to rotate. The second ring 23 drives multiple second toothed rings 20 to rotate, which is used to control the rotation of multiple nozzles 17.

[0025] Working principle: Initially, water is supplied to the inlet pipe 16 through external equipment. The water enters the annular shell 15 and is sprayed out from the nozzle 17 through multiple spiral hoses 18. The first spherical shell 5 is filled with spray liquid. Gas enters the first spherical shell 5 through the air inlet pipe 4 and comes into direct and full contact with the liquid (basically ensuring that each time gas is poured in, it first contacts the liquid). At this time, the opening of the first spherical shell 5 faces upward, and the multiple air guide holes 10 of the second spherical shell 9 are all located above the annular baffle 13 (in this state, the first spherical shell 5 and the second spherical shell 9 form a sealed environment in the spray tower body 1, increasing the residence time of the gas in the spray tower body 1, so that it reacts more thoroughly with the spray liquid). Then, the motor 2 is started, and the motor 2 drives the rotating shaft 14 to rotate. The rotating shaft 14 drives the pulley 6 connected to it to rotate. The pulley 6 drives another pulley 6 to rotate through the conveyor belt 7. The pulley 6 drives the sleeve 8 connected to it to rotate. The sleeve 8 and the rotating shaft 14 drive the first spherical shell 5 and the second spherical shell 9 to rotate synchronously. During the rotation, when the opening of the first spherical shell 5 is facing downward, part of the spray liquid inside the first spherical shell 5 will pour down. When the multiple air guide holes 10 of the second spherical shell 9 are partially located above the annular baffle 13 and partially located below the annular baffle 13, part of the treated gas inside the spray tower body 1 will be discharged through the air guide holes 10. When the second spherical shell 9 rotates, it drives the first magnet 30 and the second magnet 31 to move. When the first magnet 30 approaches the third magnet 26, it controls the rotating rod 25 to move vertically upward. The rotating rod 25 drives the spiral sleeve 22 to move vertically upward. The spiral sleeve 22 cooperates with the spiral groove 27 to drive the second ring 23 to rotate. The second ring 23 drives multiple second toothed rings 20 to rotate. The second toothed rings 20 drive multiple first toothed rings 19 to rotate. The first toothed rings 19 drive the nozzle 17 to rotate. This is used to control the position of multiple water outlets and continuously change the spray position so that the gas and spray liquid can have better contact again. The water outlet of the nozzle 17 faces upward, which can reduce the contact between the water outlet and the gas. Since the gas may contain impurities such as oil and ash, it reduces the possibility of the water outlet of the nozzle 17 being blocked. When controlling the rotation of multiple nozzles 17, the spiral hose 18 deforms. It is not necessary to install the nozzle 17 directly on the annular shell 15. This avoids the water pressure being affected due to poor sealing caused by rotation, which in turn affects the spraying effect. When the second spherical shell 9 rotates, when the third magnet 26 approaches the third magnet 26, it controls the rotating rod 25 to move vertically downward. The rotating rod 25 drives the spiral sleeve 22 to move vertically downward. The spiral sleeve 22 cooperates with the spiral groove 27 to drive the second ring 23 to rotate. The second ring 23 drives multiple second toothed rings 20 to rotate. The second toothed rings 20 drive multiple first toothed rings 19 to rotate. The first toothed rings 19 drive the nozzle 17 to rotate to control the position of multiple water outlets and continuously change the spray position so that the gas and spray liquid can have better contact again.

[0026] The above description is merely a preferred embodiment of the present invention and is 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 will readily make equivalent substitutions for its 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. The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A boiler exhaust gas treatment and emission device, comprising a spray tower body (1), wherein an air inlet pipe (4) is fixedly connected to one side of the spray tower body (1), characterized in that, The spray tower body (1) is provided with multiple interconnected annular shells (15). Multiple spiral hoses (18) are fixedly connected to the upper end of the annular shells (15). A support assembly is fixedly installed on the upper end of the annular shells (15). The support assembly includes multiple annular plates (24). Multiple nozzles (17) fixedly connected to the spiral hoses (18) are rotatably installed on the annular plates (24). The outlet of the nozzles (17) faces upward. A rotating assembly for controlling the rotation of the multiple nozzles (17) is slidably arranged on the annular plates (24). A first spherical shell (5) is provided below the annular shells (15). A spherical filler is fixedly installed on the inner wall of the first spherical shell (5). Material layer (32), an opening is provided on the outside of the first spherical shell (5), an arc-shaped filler layer (11) is provided in the opening, one side of the first spherical shell (5) is rotatably connected to the air inlet pipe (4), the outer wall of the air inlet pipe (4) is slidably fitted with a sleeve (8) fixedly connected to the first spherical shell (5), a sealing assembly is provided above the nozzle (17), the sealing assembly includes a second spherical shell (9), a rotating shaft (14) is fixedly installed on one side of the second spherical shell (9), a transmission assembly is provided between the rotating shaft (14) and the sleeve (8), and a telescopic component for controlling the rotation of the rotating assembly is provided between the second spherical shell (9) and the annular shell (15).

2. The boiler exhaust gas treatment and emission equipment according to claim 1, characterized in that, The support assembly also includes a support column (21) fixedly disposed between the annular plate (24) and the annular shell (15).

3. The boiler exhaust gas treatment and emission equipment according to claim 2, characterized in that, The sealing assembly also includes an annular baffle (13) fixedly installed on the inner wall of the spray tower body (1). The second spherical shell (9) slides in contact with the inner wall of the annular baffle (13). The rotating shaft (14) is rotatably connected to the annular baffle (13). One end of the rotating shaft (14) penetrates through the spray tower body (1). A plurality of air guide holes (10) are opened through half of the outer arc surface of the second spherical shell (9).

4. The boiler exhaust gas treatment and emission equipment according to claim 3, characterized in that, The conveying assembly includes pulleys (6) fixedly sleeved on the sleeve (8) and the rotating shaft (14), a conveyor belt (7) sleeved between the two pulleys (6), a protective shell (3) fixedly connected to the spray tower body (1) on the outside of the pulleys (6) and the conveyor belt (7), a motor (2) fixedly installed on the outside of the protective shell (3), and the output end of the motor (2) fixedly connected to the rotating shaft (14).

5. A boiler exhaust gas treatment and emission device according to claim 4, characterized in that, The rotating assembly includes multiple first toothed rings (19) fixedly sleeved on the outside of the nozzle (17), and multiple annular plates (24) are provided with second toothed rings (20) at their upper ends. The first toothed rings (19) mesh with the second toothed rings (20), and a connecting plate (28) is fixedly provided between the multiple second toothed rings (20) and slidably connected to the annular plate (24).

6. The boiler exhaust gas treatment and emission equipment according to claim 5, characterized in that, The telescopic component includes a first magnet (30) and a second magnet (31) fixedly installed inside the second spherical shell (9). A first ring (29) is fixedly installed on the inner wall of the annular shell (15) located in the inner circle. A second ring (23) is fixedly connected to the inner wall of the second toothed ring (20) located in the inner circle. A spiral groove (27) is opened on the inner wall of the second ring (23). A rotating rod (25) is slidably arranged on the inner wall of the first ring (29). A third magnet (26) that attracts the first magnet (30) is fixedly connected to the upper end of the rotating rod (25). The third magnet (26) repels the second magnet (31). A spiral sleeve (22) that is slidably connected to the spiral groove (27) is sleeved on the outer side of the rotating rod (25).

7. A boiler exhaust gas treatment and emission device according to claim 6, characterized in that, The arc-shaped packing layer (11) and the spherical packing layer (32) are integral parts.

8. A boiler exhaust gas treatment and emission device according to claim 7, characterized in that, A water inlet pipe (16) is fixedly connected to one side of the annular shell (15) on the outer ring, and the water inlet pipe (16) is fixedly connected to an external water supply device.

9. A boiler exhaust gas treatment and emission device according to claim 8, characterized in that, A guide ring (12) is fixedly installed on the inner wall of the spray tower body (1). The lower end of the guide ring (12) is connected to the opening of the first spherical shell (5). The lower end of the guide ring (12) is in sliding contact with the first spherical shell (5) and the second spherical shell (9).

10. A boiler exhaust gas treatment and emission device according to claim 9, characterized in that, When the opening of the first spherical shell (5) is directly above, multiple air guide holes (10) are located above the annular baffle (13) to form a sealed state.

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