A desulfurization tower spray device

Abstract

The present invention relates to the field of desulfurization tower spraying technology, and specifically discloses a desulfurization tower spraying device, including a mounting pipe and a spraying layer arranged on the mounting pipe, each spraying layer includes a plurality of spraying pipes, the spraying pipes are connected to the mounting pipe, and the spraying pipes adjacent to each other are arranged in a staggered manner. A mounting frame is arranged on the spraying pipe, and a rotating roller is rotatably connected to the mounting frame. A covering film is arranged on the rotating roller, and the covering film cover is arranged above the spraying pipe. A driving component for driving the rotating roller to drive the covering film to rotate is arranged on the mounting pipe, and a scraper is arranged on one side of the spraying pipe by the mounting frame, and one side of the scraper is against the covering film. The desulfurization tower spraying device of the present invention covers and protects the spraying pipe by the covering film, thereby preventing the desulfurizer from scaling on the spraying pipe, and the desulfurizer on the covering film is scraped off by the scraper, thereby realizing automatic cleaning of the covering film and extending the service life of the covering film.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization tower spraying, and in particular to a desulfurization tower spraying device. Background Art

[0002] Desulfurization tower spraying is an important process in the desulfurization tower, which mainly involves spraying desulfurizer (such as limestone slurry, etc.) into the desulfurization tower through a spray device to chemically react with pollutants such as sulfur dioxide in the flue gas to achieve the desulfurization effect. The uniformity of spray distribution is an important factor affecting the desulfurization effect. Uneven spray distribution will lead to poor desulfurization effect in local areas of the tower.

[0003] The Chinese patent application with publication number CN111701370A discloses a high-efficiency desulfurization and dust removal spray device, including multiple spray layers arranged in sequence from bottom to top, each spray layer including a slurry circulation main pipe, a main pipe group connected to the slurry circulation main pipe, and a branch pipe group connected to the main pipe group, the odd-numbered spray layers arranged from bottom to top in the spray empty tower cylinder and the main pipe group and branch pipe group of the even-numbered spray layers are vertically staggered at the bottom of the spray empty tower cylinder, the main pipe group includes an even number of spray main pipes, the branch pipe group includes two spray branch pipes symmetrically arranged on both sides of the main pipe group, the spray branch pipe is connected to the nearest spray main pipe through a shunt pipe, and the two sides or bottom of the spray main pipe and the spray branch pipe are provided with a pipe, and the end of the pipe is connected with a nozzle. The above technical scheme realizes uniform spraying by arranging multiple layers of spray layers vertically staggered at equal intervals, ensuring a good spraying effect and achieving ultra-low emission requirements.

[0004] Since limestone resources are abundant, easy to obtain and store, the mining and processing costs are relatively low, and the chemical reaction activity is high, the desulfurization reaction efficiency is high, therefore, limestone slurry has become an economical and practical desulfurizer. In the above technical solution, when limestone slurry is used as a desulfurizer for spraying, the limestone slurry will adhere to the spray pipe. After a long period of accumulation, it may scale on the outside of the pipe, or even block the nozzle, affecting the spray range and uniformity of the spray. In addition, the pipe may corrode due to scaling. Therefore, it is necessary to clean the outside of the pipe regularly. However, the spray pipe in the above technical solution is fixedly installed in the desulfurization tower, and it needs to be shut down for cleaning. Workers enter the desulfurization tower to scrape and clean the dirt on the pipe, which is not only time-consuming and labor-intensive, but also has great safety hazards.

[0005] Therefore, the art needs a desulfurization tower spray device to solve the above problems. Summary of the invention

[0006] The present invention provides a desulfurization tower spray device, aiming to solve the problem in the related art that limestone slurry is easily attached to the spray pipe of the desulfurization tower, and the pipe needs to be cleaned regularly, which is time-consuming and labor-intensive and has great safety hazards.

[0007] A desulfurization tower spray device of the present invention comprises a mounting pipe and a spray layer arranged on the mounting pipe at vertical intervals, each spray layer comprises a plurality of spray pipes arranged at circumferential intervals along the mounting pipe, the spray pipe is connected to the mounting pipe, and the upper and lower adjacent spray pipes are arranged alternately, a mounting frame is provided on the spray pipe, a rotating roller is rotatably connected to the mounting frame, a covering film is arranged around the rotating roller, the covering film cover is arranged above the spray pipe, a driving component 1 for driving the rotating roller to drive the covering film to rotate is provided on the mounting pipe, a scraper is provided on one side of the spray pipe on the mounting frame, one side of the scraper is against the covering film, and when the driving component 1 drives the rotating roller to drive the covering film to rotate, the scraper scrapes off the desulfurizer attached to the covering film.

[0008] Beneficial effects: The present invention improves the uniformity of spray distribution by arranging multiple layers of staggered spray pipes, so that pollutants such as sulfur dioxide in the flue gas can be fully reacted, thereby improving the desulfurization effect; and the present invention arranges a covering film above the spray pipe, so that the desulfurizer sprayed above the covering film will flow downward along the covering film and drip from both sides of the covering film, thereby achieving covering and protection of the spray pipe by the covering film, avoiding the desulfurizer from directly adhering to the spray pipe and scaling on the spray pipe, thus eliminating the need for cleaning the spray pipe; in addition, during the continuous rotation of the covering film, the scraper scrapes off the desulfurizer attached to the covering film, avoiding the desulfurizer from scaling on the covering film, thereby achieving automatic cleaning of the covering film and extending the service life of the covering film.

[0009] Preferably, the scraper is an arc-shaped plate, and the scraper is tangent to the covering film. The scraper is rotatably connected to the mounting frame, and a driving component 2 for driving the scraper to reciprocate is provided on the mounting frame. The scraper is always in contact with the covering film during rotation.

[0010] Beneficial effect: By driving the scraper to rotate back and forth, the covering film forms friction with the scraper surface, avoiding the desulfurizer from scaling on the scraper, realizing automatic cleaning of the scraper, and extending the service life of the scraper.

[0011] Preferably, guide plates are respectively provided on both sides of the spray pipe, the guide plates are fixedly connected to the mounting frame, and the guide plates are inclined downward from the end away from the mounting pipe to the end close to the mounting pipe. The vulcanizing agent dripping on the covering film enters the guide plates and flows along the guide plates to the mounting pipe.

[0012] Beneficial effect: By setting up a guide plate, the desulfurizer dripping from the covering film is collected, and the collected desulfurizer flows out from the end of the guide plate close to the installation pipe, avoiding the desulfurizer on the covering film from falling directly and merging with the fine desulfurizer sprayed by the spray pipe, affecting the uniformity of the desulfurizer spraying.

[0013] Preferably, the mounting pipe is rotatably connected to the desulfurization tower, and a driving member for driving the mounting pipe to rotate is provided on the desulfurization tower. The driving member drives the mounting pipe to rotate, and the mounting pipe drives the spray pipe to rotate and spray.

[0014] Beneficial effect: By driving the installation pipe to rotate, the installation pipe drives the spray pipe to rotate and spray, further improving the uniformity of spraying and ensuring the desulfurization effect.

[0015] Preferably, a collecting bucket is provided at the bottom of the mounting pipe, the collecting bucket is fixedly connected to the desulfurization tower, a stirring rod is fixedly connected to the outer periphery of the mounting pipe near the bottom, and a water pump is installed on the mounting pipe, which pumps the sulfidizing agent collected in the collecting bucket back into the mounting pipe.

[0016] Beneficial effect: The limestone slurry dripping on the guide plate is collected by the collecting bucket, the desulfurizer in the collecting bucket is stirred by the stirring rod, and the water pump pumps the desulfurizer collected in the collecting bucket back into the installation pipe to realize the recycling of the desulfurizer.

[0017] Preferably, the mounting frame includes an arc-shaped inner plate and an arc-shaped outer plate connected by a connecting plate, the arc-shaped inner plate is installed above the corresponding spray pipe, three rotating rollers are provided, and are respectively rotatably connected to the connecting plate, the arc-shaped outer plate is arranged between two adjacent rotating rollers, and a covering film is arranged around the rotating rollers and the outer periphery of the arc-shaped outer plate, and the covering film is attached to the outer side of the arc-shaped inner plate on the side facing the spray pipe.

[0018] Preferably, a transmission assembly is arranged between the three rotating rollers, a driving assembly 1 is connected to one of the rotating rollers, and the transmission assembly includes a gear 1 correspondingly connected to each rotating roller and a toothed belt arranged around the outer periphery of the three gears 1.

[0019] Preferably, the scraper is rotatably connected to the arc-shaped inner plate through a rotating shaft, and a torsion spring is provided at the rotating connection. The driving component 2 includes a gear 2 fixedly connected to the rotating shaft, and the gear 2 is meshed with a gear 1 of one of the rotating rollers, and the gear 1 of the rotating roller is set as an incomplete gear.

[0020] Preferably, the mounting tube is a sandwich tube, the spray pipe is connected to the sandwich of the mounting tube, the driving component one includes a mounting rod and an end face gear fixedly connected to the mounting rod, the top end of the mounting rod is fixedly connected to the desulfurization tower, the end face gear corresponds to the number and position of the spray layers, one of the rotating rollers on the spray pipe passes through the mounting tube and is fixedly connected to gear three, gear three is meshed with the end face gear, and when the mounting tube rotates, gear three rotates along the end face gear.

[0021] Preferably, an end cover is provided at one end of the spray pipe away from the mounting pipe, the end cover is fixedly connected to the connecting plate, and the end cover covers the transmission assembly.

[0022] The beneficial effects of the present invention are:

[0023] (1) The present invention improves the uniformity of spray distribution by providing multiple layers of staggered spray pipes, so that pollutants such as sulfur dioxide in the flue gas can be fully reacted, thereby improving the desulfurization effect;

[0024] (2) The present invention provides a covering film above the spray pipe. The desulfurizer sprayed onto the covering film will flow downward along the covering film and drip from both sides of the covering film, thereby achieving the covering and protection of the spray pipe by the covering film, preventing the desulfurizer from directly adhering to the spray pipe and scaling on the spray pipe, thereby eliminating the need to clean the spray pipe.

[0025] (3) The present invention drives the rotating roller to rotate so that the covering film rotates continuously, and the scraper scrapes off the desulfurizer attached to the covering film to prevent the desulfurizer from scaling on the covering film, thereby achieving automatic cleaning of the covering film and extending the service life of the covering film. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a desulfurization tower in which a desulfurization tower spray device is located according to the present invention.

[0027] Figure 2 It is a schematic diagram of the overall structure of a desulfurization tower spray device of the present invention.

[0028] Figure 3 The present invention is a schematic diagram of the structure of a spray pipe and a covering film of a desulfurization tower spray device.

[0029] Figure 4 The present invention is a cross-sectional view of a spray pipe, a mounting frame and a covering film of a desulfurization tower spray device Figure 1 .

[0030] Figure 5 The present invention is a cross-sectional view of a spray pipe, a mounting frame and a covering film of a desulfurization tower spray device Figure 2 .

[0031] Figure 6 It is a structural schematic diagram of a transmission component of a desulfurization tower spray device of the present invention.

[0032] Figure 7 The present invention is a schematic diagram of the assembly of a spray pipe, a mounting frame and a covering film of a desulfurization tower spray device.

[0033] Figure 8 It is a structural schematic diagram of a driving component 1 of a desulfurization tower spray device of the present invention.

[0034] Reference numerals:

[0035] 1. Mounting pipe; 11. Stirring rod; 2. Spray pipe; 21. Spray nozzle; 22. End cover; 3. Desulfurization tower; 31. Smoke inlet; 32. Smoke outlet; 33. Driving motor; 4. Mounting frame; 41. Arc inner plate; 42. Arc outer plate; 43. Connecting plate; 5. Rotating roller; 51. Gear one; 52. Toothed belt; 53. Gear three; 6. Covering film; 7. Scraper; 71. Rotating shaft; 72. Gear two; 8. Mounting rod; 81. End gear; 9. Guide plate. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figures 1 to 8 As shown, a desulfurization tower spray device of the present invention comprises a mounting pipe 1 and three spray layers arranged on the mounting pipe 1 at intervals along the vertical direction. Each spray layer comprises three spray pipes 2 arranged at intervals along the circumference of the mounting pipe 1, and a plurality of spray nozzles 21 are arranged at the bottom of the spray pipe 2, and the spray pipes 2 adjacent to each other are arranged alternately. A smoke inlet 31 and a smoke outlet 32 ​​are provided on the desulfurization tower 3, and the flue gas enters the desulfurization tower 3 from the smoke inlet 31, and the desulfurizer sprayed by the spray nozzle 21 reacts chemically with pollutants such as sulfur dioxide in the flue gas, thereby achieving a desulfurization effect.

[0038] The mounting pipe 1 is rotatably connected to the desulfurization tower 3. The desulfurization tower 3 is provided with a driving component for driving the mounting pipe 1 to rotate. As an example, the driving component is a driving motor 33. The driving motor 33 is fixedly connected to the desulfurization tower 3, and the mounting pipe 1 is fixedly connected to the output end of the driving motor 33.

[0039] The mounting pipe 1 is a sandwich pipe, the middle part of which is a hollow structure. The sandwich is connected to the bottom of the desulfurization tower 3 through an external pipeline (not shown in the figure). A water pump (not shown in the figure) is provided on the external pipeline. The water pump pumps the desulfurizer at the bottom of the desulfurization tower 3 from the external pipeline into the sandwich. The spray pipe 2 is connected to the sandwich of the mounting pipe 1, and the desulfurizer is sprayed downward from the spray nozzle 21 of the spray pipe 2. As the mounting pipe 1 rotates, the spraying becomes more uniform. In this embodiment, the desulfurizer is limestone slurry.

[0040] like Figures 4 to 7As shown, a mounting frame 4 is provided on the spray pipe 2, and the mounting frame 4 includes an arc-shaped inner plate 41 and an arc-shaped outer plate 42. Three arc-shaped inner plates 41 are provided at intervals along the axial direction of the spray pipe 2 and are fixedly installed above the corresponding spray pipe 2. Two arc-shaped outer plates 42 are provided, and the arc-shaped outer plates 42 extend along the axial direction of the spray pipe 2. The arc-shaped inner plates 41 near the two ends of the spray pipe 2 are respectively fixedly connected to the two arc-shaped outer plates 42 through connecting plates 43. Three rotating rollers 5 are rotatably connected to the connecting plate 43, and the arc-shaped outer plate 42 is arranged between two adjacent rotating rollers 5. A covering film 6 is provided around the three rotating rollers 5 and the arc-shaped outer plate 42. The covering film 6 is attached to the outer side of the arc-shaped inner plate 41 toward the side of the spray pipe 2, forming an arc-shaped covering film 6 that is covered above the spray pipe 2. As an example, the covering film 6 is a film belt made of rubber material. The limestone slurry sprayed onto the covering film 6 will flow downward along the covering film 6 and drip from both sides of the covering film 6, thereby achieving covering and protection of the spray pipe 2 by the covering film 6, preventing the limestone slurry from directly adhering to the spray pipe 2 and scaling on the spray pipe 2.

[0041] The installation tube 1 is provided with a driving component 1 for driving the rotating roller 5 to drive the covering film 6 to rotate. The installation frame 4 is provided with a scraper 7 on one side of the spray pipe 2. One side of the scraper 7 is against the covering film 6. When the driving component 1 drives the rotating roller 5 to drive the covering film 6 to rotate, the scraper 7 scrapes off the desulfurizer attached to the covering film 6. By driving the covering film 6 to rotate, the scraper 7 continuously scrapes off the limewater slurry attached to the covering film 6, avoiding the scaling of the limestone slurry on the covering film 6, realizing the automatic cleaning of the covering film 6, and extending the service life of the covering film 6.

[0042] like Figure 4 , Figures 6 to 8 As shown, one of the rotating rollers 5 is arranged directly above the spray pipe 2, and the straight line where the central axis of the rotating roller 5 is located intersects with the straight line where the central axis of the mounting pipe 1 is located, and the other two rotating rollers 5 are symmetrically arranged on both sides of the spray pipe 2. A transmission assembly is arranged between the three rotating rollers 5, and the transmission assembly includes a gear 1 51 correspondingly connected to each rotating roller 5 and a toothed belt 52 arranged around the outer periphery of the three gears 1 51. The transmission assembly is located at the end of the spray pipe 2 away from the mounting pipe 1, and the driving assembly 1 is connected to the rotating roller 5 located directly above the spray pipe 2. When the driving assembly 1 drives the rotating roller 5 to rotate, the rotating roller 5 drives the toothed belt 52 to rotate through the corresponding gear 1 51, and the toothed belt 52 drives the corresponding rotating roller 5 to rotate through the other two gears 1 51, thereby driving the covering film 6 to rotate. An end cover 22 is arranged at the end of the spray pipe 2 away from the mounting pipe 1, and the end cover 22 is fixedly connected to the connecting plate 43, and the end cover 22 covers the transmission assembly.

[0043] The driving assembly 1 includes a mounting rod 8 arranged vertically and three end face gears 81 fixedly connected to the mounting rod 8. The mounting rod 8 is located at the center of the mounting pipe 1, and the top of the mounting rod 8 is fixedly connected to the desulfurization tower 3. The three end face gears 81 correspond to the positions of the three spray layers respectively. The rotating roller 5 directly above each spray pipe 2 penetrates the mounting pipe 1 and is fixedly connected with a gear 3 53, which meshes with the corresponding end face gear 81. When the mounting pipe 1 rotates, the gear 3 53 rotates along the end face gear 81, thereby driving the corresponding rotating roller 5 to rotate.

[0044] like Figures 4 to 7 As shown, the scraper 7 is an arc-shaped plate, and the scraper 7 is tangent to the covering film 6. The scraper 7 is rotatably connected to the arc-shaped inner plate 41 through the rotating shaft 71, and a torsion spring (not shown in the figure) is provided at the rotating connection. During the rotation of the covering film 6, the torsion spring makes the scraper 7 always close to the covering film 6. The mounting frame 4 is provided with a driving component 2 for driving the scraper 7 to reciprocate. The driving component 2 includes a gear 2 72 fixedly connected to the rotating shaft 71. The gear 2 72 meshes with the gear 1 51 of the rotating roller 5 on the right side of the spray pipe 2, and the gear 1 51 of the rotating roller 5 is set as an incomplete gear. During the rotation of the rotating roller 5, the gear 1 51 drives the gear 2 72 to drive the scraper 7 to rotate. After the gear 1 51 is separated from the gear 2 72, the torsion spring resets the scraper 7. During the rotation of the scraper 7, it is always in contact with the covering film 6. By driving the scraper 7 to rotate back and forth, the covering film 6 forms friction with the surface of the scraper 7, thereby preventing the limestone slurry from scaling on the scraper 7 and extending the service life of the scraper 7.

[0045] Guide plates 9 are respectively provided on both sides of the spray pipe 2, and the guide plates 9 are fixedly connected to the mounting frame 4, and the guide plates 9 are tilted downward from the end away from the mounting pipe 1 to the end close to the mounting pipe 1. The limestone slurry dripping from the covering film 6 enters the guide plates 9 and flows toward the mounting pipe 1 along the guide plates 9.

[0046] like Figure 2 and Figure 3 As shown, a collecting bucket (not shown in the figure) is provided at the bottom of the installation pipe 1, and the collecting bucket is fixedly connected to the desulfurization tower 3. The collecting bucket collects the limestone slurry dripping from the guide plate 9. A stirring rod 11 is fixedly connected to the outer periphery of the installation pipe 1 near the bottom, and the stirring rod 11 stirs the limestone slurry in the collecting bucket during the rotation of the installation pipe 1. A water pump is installed on the installation pipe 1, and the water pump pumps the limestone slurry collected in the collecting bucket back into the installation pipe 1 to realize the recycling of the limestone slurry.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A desulfurization tower spray device, comprising a mounting pipe and a spray layer arranged on the mounting pipe at intervals along the vertical direction, each spray layer comprising a plurality of spray pipes arranged at intervals along the circumference of the mounting pipe, the spray pipes being connected to the mounting pipe, characterized in that: The spray pipes adjacent to each other are arranged alternately, and a mounting frame is provided on the spray pipe, and a rotating roller is rotatably connected to the mounting frame, and a covering film is arranged around the rotating roller, and the covering film cover is arranged above the spray pipe. A driving component 1 for driving the rotating roller to drive the covering film to rotate is provided on the mounting pipe, and a scraper is provided on one side of the spray pipe on the mounting frame, and one side of the scraper is against the covering film. When the driving component 1 drives the rotating roller to drive the covering film to rotate, the scraper scrapes off the desulfurizer attached to the covering film; The scraper is an arc-shaped plate, and the scraper is tangent to the covering film. The scraper is rotatably connected to the mounting frame, and a driving component 2 for driving the scraper to reciprocate is arranged on the mounting frame. The scraper is always in contact with the covering film during the rotation process; The mounting frame includes an arc-shaped inner plate and an arc-shaped outer plate connected by a connecting plate. The arc-shaped inner plate is installed above the corresponding spray pipe. Three rotating rollers are provided and are respectively rotatably connected to the connecting plate. The arc-shaped outer plate is arranged between two adjacent rotating rollers. A covering film is arranged around the rotating rollers and the outer periphery of the arc-shaped outer plate, and the covering film is attached to the outer side of the arc-shaped inner plate on the side facing the spray pipe.

2. The desulfurization tower spray device according to claim 1, characterized in that: Guide plates are respectively arranged on both sides of the spray pipe, which are fixedly connected to the mounting frame and are tilted downward from the end away from the mounting pipe to the end close to the mounting pipe. The vulcanizing agent dripping on the covering film enters the guide plates and flows along the guide plates to the mounting pipe.

3. The desulfurization tower spray device according to claim 2, characterized in that: The installation pipe is rotatably connected to the desulfurization tower. A driving member for driving the installation pipe to rotate is arranged on the desulfurization tower. The driving member drives the installation pipe to rotate, and the installation pipe drives the spray pipe to rotate and spray.

4. The desulfurization tower spray device according to claim 3, characterized in that: A collecting bucket is arranged at the bottom of the installation pipe, which is fixedly connected to the desulfurization tower. A stirring rod is fixedly connected to the outer periphery of the installation pipe near the bottom. A water pump is installed on the installation pipe, which pumps the sulfidizing agent collected in the collecting bucket back into the installation pipe.

5. The desulfurization tower spray device according to claim 3, characterized in that: A transmission assembly is arranged between the three rotating rollers, a driving assembly 1 is connected to one of the rotating rollers, and the transmission assembly comprises a gear 1 correspondingly connected to each rotating roller and a toothed belt arranged around the outer periphery of the three gears 1.

6. The desulfurization tower spray device according to claim 5, characterized in that: The scraper is rotatably connected to the arc-shaped inner plate through a rotating shaft, and a torsion spring is arranged at the rotating connection. The driving component 2 includes a gear 2 fixedly connected to the rotating shaft, and the gear 2 is meshed with a gear 1 of one of the rotating rollers, and the gear 1 of the rotating roller is arranged as an incomplete gear.

7. The desulfurization tower spraying device according to claim 5, characterized in that: The mounting pipe is a sandwich pipe, and the spray pipe is connected to the sandwich of the mounting pipe. The driving component 1 includes a mounting rod and an end gear fixedly connected to the mounting rod. The top of the mounting rod is fixedly connected to the desulfurization tower. The end gear corresponds to the number and position of the spray layers. One of the rotating rollers on the spray pipe passes through the mounting pipe and is fixedly connected to gear 3. Gear 3 is meshed with the end gear. When the mounting pipe rotates, gear 3 rotates along the end gear.

8. The desulfurization tower spray device according to claim 5, characterized in that: An end cover is arranged at one end of the spray pipe away from the mounting pipe, the end cover is fixedly connected to the connecting plate, and the end cover covers the transmission component.

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