Intelligent flue gas desulfurization tower

Abstract

The invention relates to the technical field of flue gas desulfurization towers, solves the problem that in the prior art, a spray head is easily blocked under flue gas scouring, and discloses an intelligent flue gas desulfurization tower which comprises a layering plate and a rain tray which are arranged in a tower body, and the layering plate is located between a gas inlet pipe and an absorption layer; the layering plate is of a wave structure, and a plurality of through grooves are formed in the wave side of the layering plate at intervals. The sprayers correspond to wave crests of the layering plate; the bottoms of the layering plate troughs communicate with multiple drainage pipes. The rain disc is hung below the layering plate, and a plurality of rain curtain grooves are formed in the rain disc; the drain pipe corresponds to the rain tray and is staggered with the rain curtain groove; the rain curtain grooves are formed in the smoke inlet direction and are arranged at intervals. Through grooves are formed in the layering plate at intervals, and the spray heads are arranged corresponding to wave crests of the layering plate. The layered plate effectively rectifies the flue gas and reduces the washing to the spray head, and the rain disc forms a water curtain, so that the desulfurization effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas desulfurization towers, and in particular to an intelligent flue gas desulfurization tower. Background Art

[0002] Flue gas desulfurization tower is a kind of equipment for desulfurization of industrial waste gas, mainly used for flue gas desulfurization of flue gas emission sources such as coal-fired power plants, industrial boilers and kilns. It converts sulfur dioxide (SO2) in flue gas into harmless compounds through chemical reactions, thereby reducing pollution to the environment.

[0003] The flue gas desulfurization tower includes a tower body. The main structure of the tower body desulfurization tower is composed of a slurry layer, an oxidation layer, an absorption layer, a demisting layer and a discharge layer from bottom to top. The absorption layer is the core part of the desulfurization tower and is equipped with a nozzle. The nozzle is used to spray the desulfurizer (such as lime slurry) evenly in the flue gas to make the chemical reaction of SO2 and the desulfurizer. The absorption layer of the oxidation layer is used to oxidize the calcium sulfite generated by the chemical reaction into calcium sulfate. The oxidation layer is usually equipped with an oxygen nozzle to ensure that oxygen is fully in contact with the calcium sulfite and an oxidation reaction occurs. After the slurry and ash are flushed by the demisting layer, the flue gas is discharged from the top of the desulfurization tower to meet the environmental emission standards.

[0004] The flue gas from boilers, kilns, etc. is firstly treated by dust collectors for dust removal, and then the dust-removed flue gas enters the desulfurization tower from the smoke inlet through the flue. In the desulfurization tower, the desulfurizer (such as lime slurry) is evenly sprayed into the flue gas through the nozzle. The desulfurizer reacts chemically with SO2 in the flue gas to generate calcium sulfite. The generated calcium sulfite is oxidized to calcium sulfate by oxygen in the oxide layer. The solid-liquid mixture generated by the reaction falls into the slurry below under the action of gravity.

[0005] Regarding the above-mentioned related technologies, in the prior art, as the flue gas flows into the tower body and washes the nozzle from bottom to top, part of the flue gas reacts with the desulfurizer at the nozzle, and the solid or colloidal substances generated after the reaction are easy to clog the nozzle, resulting in the nozzle spraying uniformity being affected. Summary of the invention

[0006] In order to improve the problem that the nozzles in the prior art are easily clogged under flue gas flushing, the present application provides an intelligent flue gas desulfurization tower.

[0007] The following technical solutions are adopted: An intelligent flue gas desulfurization tower comprises a tower body and a plurality of lifting pipes, wherein the space inside the tower body is divided into a slurry layer, an oxidation layer, an absorption layer, a demisting layer and a discharge layer from bottom to top; a plurality of nozzles are arranged in the absorption layer; the lifting pipe extracts the desulfurizer in the slurry layer and supplies it to the nozzles; an air inlet pipe is arranged between the slurry layer and the absorption layer; a layer plate and a rain tray are arranged in the tower body, and the layer plate is located between the air inlet pipe and the absorption layer; the layer plate is a wave structure, and a plurality of through grooves are arranged at intervals on the wave side of the layer plate; a plurality of the nozzles are arranged corresponding to the wave crests of the layer plate; a plurality of drainage pipes are connected to the bottom of the wave trough of the layer plate; the rain tray is suspended below the layer plate, and a plurality of rain curtain grooves are arranged on the rain tray; the drainage pipe corresponds to the rain tray and is staggered with the rain curtain grooves; a plurality of the rain curtain grooves are arranged along the flue gas discharge direction, and a plurality of the rain curtain grooves are arranged at intervals.

[0008] By adopting the above technical solution, the space inside the tower body is divided into a slurry layer, an oxidation layer, an absorption layer, a demisting layer and a discharge layer. The desulfurizer in the slurry layer is supplied to the nozzle of the absorption layer for spraying through the lifting pipe. The recycling of the desulfurizer and the step-by-step treatment of the flue gas are realized, and the desulfurization efficiency is improved. The stratified plate is located between the air inlet pipe and the absorption layer. It is a wave structure with through grooves at intervals. The nozzle is set corresponding to the wave crest of the stratified plate. The bottom of the trough of the stratified plate is connected to a drainage pipe, and the rain tray is suspended under the stratified plate and is provided with a rain curtain groove. The stratified plate effectively rectifies the flue gas and reduces scouring. The rain tray forms a water curtain through the rain curtain groove, which further increases the contact area between the flue gas and the desulfurizer and improves the desulfurization effect.

[0009] Optionally, a connecting ring is provided on the outer peripheral side of the layered plate, the connecting ring is connected to the inner wall of the tower body, and the upper wall of the connecting ring is higher than the wave crest of the layered plate; and a temperature detection element is provided at the air inlet pipe.

[0010] By adopting the above technical solution, the stability of the layered plate is enhanced, and the splashing of the desulfurizer and the mixed liquid after the reaction is prevented, thereby ensuring the smooth progress of the desulfurization process.

[0011] Optionally, the rain tray is provided with an outer edge, and the outer edge is higher than the upper surface of the rain tray; and a pH value monitoring element is provided on the rain tray.

[0012] By adopting the above technical solution, the mixed liquid is effectively blocked from flowing out from the edge of the rain tray, ensuring that the mixed liquid can only flow down from the rain curtain groove, thereby improving the desulfurization efficiency.

[0013] Optionally, a gap is left between the drain pipe and the rain tray, and a support rod is provided in the drain pipe, one end of the support rod is connected to the rain tray, and the other end is connected to the drain pipe via a support rod.

[0014] By adopting the above technical solution, the setting of the gap avoids the drainage pipe from directly blocking the rain curtain groove, and the structure of the support rod and the support rod enhances the stability of the drainage pipe.

[0015] Optionally, at least two spray racks are arranged in the absorption layer, and the spray racks include a central pipe and a plurality of branch pipes. The plurality of spray racks are arranged at intervals along the gravity direction, and a plurality of nozzles are evenly spaced on the branch pipes, and the plurality of nozzles are staggered with respect to each other.

[0016] By adopting the above technical solution, uniform spraying of the desulfurizer is achieved, and the utilization rate of the desulfurizer and the desulfurization effect are improved.

[0017] Optionally, a demisting sheet is provided in the demisting layer, and the demisting sheet includes a plurality of curved bars arranged parallel to each other; the curved bars are arranged perpendicular to the length direction of the tower body; and a sulfur dioxide concentration detection element is provided in the emission layer.

[0018] By adopting the above technical solution, the contact area between the smoke and the liquid medium spray is increased, and the mud and soot mixed in the smoke are promoted to mix with the liquid medium and thus fall.

[0019] Optionally, the curved strip has an S-shaped cross-section.

[0020] By adopting the above technical solution, the S-shaped cross-section increases the residence time and disturbance of the flue gas in the demister sheet, further improving the sludge and dust removal efficiency.

[0021] Optionally, a first water spray rack for spraying liquid upwards is provided below the demisting sheet.

[0022] Optionally, a second water spray rack for spraying liquid downwards is provided above the demisting sheet.

[0023] By adopting the above technical solution, the smoke in the demisting sheet is fully mixed by spraying the liquid medium in the up and down directions, thereby improving the dust removal efficiency.

[0024] Optionally, the emission layer includes an exhaust pipe connected to the outside; the exhaust pipe is perpendicular to the tower body, and the connection between the exhaust pipe and the tower body is beveled; a humidity testing element is arranged in the emission layer.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. Improved desulfurization efficiency: Through reasonable structural design and optimization of spraying, oxidation and other processes, the desulfurization efficiency is significantly improved and the sulfur dioxide content in the flue gas is reduced.

[0026] 2. Enhanced system stability and reliability: The setting of structures such as layered plates, rain trays, connecting rings, and support rods enhances the overall stability and reliability of the desulfurization tower, ensuring the smooth progress of the desulfurization process.

[0027] 3. Provide intelligent desulfurization treatment. The temperature of the flue gas entering the desulfurization tower is detected by the temperature detection element. The temperature cannot exceed 140°C, otherwise the equipment in the tower will be damaged. The pH value of the mixed liquid in the rain tray is detected by the pH value monitoring element to judge the treatment effect and adjust the amount of sprayed desulfurization. The sulfur dioxide content of the flue gas after treatment is judged by the sulfur dioxide concentration detection element, and the spraying amount and the amount of agent added are adjusted to meet the requirements before discharge. The concentration of the sprayed liquid medium in the demisting layer is judged by the humidity testing element. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 It is a schematic diagram of the cross-sectional structure of this embodiment; Figure 3 It is a schematic diagram of the structure of the layered sheet and the rain tray; Figure 4 It is a schematic diagram of the cross-sectional structure of the layered plate and the rain tray; Figure 5 It is a schematic diagram of the enlarged structure at A; Figure 6 It is a schematic diagram of the rain tray structure; Figure 7 is a schematic top view of the first spray rack and the second spray rack; Figure 8 1. It is a schematic diagram of the structure of the demisting sheet; Fig. 9 It is a schematic diagram of the cross-sectional structure of the defogger sheet.

[0029] Explanation of the reference numerals: 1. tower body; 11. slurry layer; 111. oxidation layer; 12. absorption layer; 13. demisting layer; 14. discharge layer; 141. oblique angle; 15. air inlet pipe; 16. exhaust pipe; 17. lifting pipe; 171. lifting pump; 2. nozzle; 21. first spray rack; 211. collecting pipe; 212. branch pipe; 22. second spray rack; 3. layering plate; 31. wave crest; 32. wave trough; 321. drainage hole; 322. drainage pipe; 33. wave side; 331. through groove; 34. connecting ring; 35. support rod; 351. support rod; 4. rain tray; 41. rain curtain groove; 42. outer edge; 5. demisting sheet; 51. curved strip; 52. first water spray rack; 53. second water spray rack; 54. water supply pipe; 541. water supply equipment. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 To Attachment Fig. 9This application is described in further detail.

[0031] In the prior art, the flue gas flows into the tower body and washes the nozzle from bottom to top. Part of the flue gas reacts with the desulfurizer at the nozzle, and the solid or colloidal substances generated after the reaction are easy to block the nozzle, which affects the uniformity of the nozzle spraying.

[0032] In order to reduce the scouring of the flue gas on the nozzle 2, the product blocks the spray hole. The embodiment of the present application discloses an intelligent flue gas desulfurization tower. It includes a tower body 1, and the internal space of the tower body 1 is divided into a slurry layer 11, an oxidation layer 111, an absorption layer 12, a demisting layer 13 and a discharge layer 14 from bottom to top. The tower body 1 is the main structure of the flue gas desulfurization tower, which is usually made of corrosion-resistant materials to withstand the corrosion and scouring of flue gas. The slurry layer 11 is arranged at the bottom of the tower body 1 to store the desulfurizer. In this embodiment, the desulfurizer is selected as limestone slurry. A plurality of nozzles 2 for spraying the desulfurizer downward are arranged in the absorption layer 12, and the desulfurizer is sprayed to form a desulfurizer spray zone. An air inlet pipe 15 is arranged between the slurry layer 11 and the absorption layer 12, and one end of the air inlet pipe 15 is connected to the flue of the previous process, and the other end is connected to the tower body 1. After the flue gas enters the tower body 1, it is located below the absorption layer 12 and enters the spray zone, so that the di-atomized sulfur in the flue gas reacts with the desulfurizer to form calcium sulfite. Under the action of the airflow, the light substances move upward, and the heavy substances fall due to gravity. The calcium sulfite in the air mass falls into the oxidation layer 111 for reaction. The calcium sulfite in the air mass is atomized into calcium sulfate by oxygen in the oxidation layer 111. The airflow moves upward and enters the demisting layer 13 mixed with slurry and smoke dust. The gas droplets with mist gather to form a water flow, which falls into the slurry layer 11 due to gravity, realizing gas-liquid separation, so that the flue gas flowing through the demisting layer 13 meets the demisting requirements and is discharged.

[0033] The discharge layer 14 includes an exhaust pipe 16 connected to the outside. The exhaust pipe 16 is perpendicular to the tower body 1, and the connection between the exhaust pipe 16 and the tower body 1 is processed with an angle 141, and the treated flue gas is discharged through the exhaust pipe 16. By dividing the internal space of the tower body 1 into a slurry layer 11, an absorption layer 12, a demisting layer 13 and a discharge layer 14, each layer is responsible for the functions of desulfurization agent storage, desulfurization reaction, atomization reaction and gas emission. Reasonable space division realizes the orderly progress of the flue gas desulfurization process and improves the desulfurization efficiency. The flue gas desulfurization tower also includes a lifting pipe 17 arranged on the outside of the tower body 1. One end of the lifting pipe 17 passes through the outer wall of the tower body 1 and enters the slurry layer 11, and a lifting pump 171 is arranged on the lifting pipe 17. The lifting pump 171 is a prior art and will not be described here. The other end of the lifting pipe 17 penetrates into the absorption layer 12 to supply desulfurization agent to a plurality of nozzles 2. The lifting pipe 17 transports the desulfurizer to the spray rack in the absorption layer 12 through the lifting pump 171, and the spray rack sprays the desulfurizer evenly into the flue gas through the branch pipe 212 and the nozzle 2. This ensures that the desulfurizer can be evenly and effectively mixed with the flue gas, thereby improving the utilization rate of the desulfurizer and the desulfurization efficiency.

[0034] Furthermore, the tower body 1 is provided with a layer plate 3 and a rain pan 4, both of which are located between the air inlet pipe 15 and the absorption layer 12, and the rain pan 4 is located below the layer plate 3. After the flue gas enters the tower body 1, it first passes through the rain pan 4 and then passes through the layer plate 3. The layer plate 3 is arranged perpendicular to the length direction of the tower body 1. The layer plate 3 is a wave structure, with several edges at the highest point of the layer plate 3 as wave crests 31, several edges at the lowest point of the layer plate 3 as wave troughs 32, and several sides of the layer plate 3 inclined as wave sides 33. Then, the wave sides 33 of the layer plate 3 are provided with several through grooves 331 spaced apart in the straight line direction, and the through grooves 331 on two adjacent wave sides 33 are arranged oppositely, so that the flue gas rising from the bottom of the layer plate 3 is divided into several small gas streams after passing through the through grooves 331, and the several small gas streams are gathered in the V-shaped space, and then move upward, which plays a rectifying role and buffers the flue gas. Several nozzles 2 are arranged corresponding to the wave crests 31 of the stratified plate 3, so as to avoid the rising space of the flue gas and prevent the flue gas from directly impacting the nozzles 2. Several drainage holes 321 are arranged at intervals along a straight line at the bottom of the trough 32 of the stratified plate 3, and several drainage pipes 322 are arranged at the bottom of the stratified plate 3. One end of the drainage pipe 322 is connected to the corresponding drainage hole 321, and the other end extends vertically downward. When the nozzle 2 sprays the desulfurizer and mixes with the flue gas to form a mixed solid-liquid coexisting liquid (hereinafter referred to as the mixed liquid), the mixed liquid falls on the stratified plate 3 and converges in the trough 32 of the stratified plate 3, and flows into the drainage pipe 322 through the drainage hole 321. The mixed liquid flows through the drainage pipe 322 to the upper surface of the rain tray 4. The rain tray 4 is suspended below the stratified plate 3, and several rain curtain grooves 41 are opened on the surface of the rain tray 4. The mixed liquid flows downward along the edge of the rain curtain groove 41 to form a mixed liquid water curtain. When the flue gas enters the tower body 1, it is separated into small streams by the mixed liquid water curtain. At the same time, the water curtain contains unreacted desulfurizer, so the flue gas also has a desulfurization effect after contacting the water curtain. The drain pipe 322 corresponds to the surface of the rain pan 4 and staggers the rain curtain groove 41, so as to prevent the mixed liquid falling from the drain pipe 322 from falling directly into the rain curtain groove 41. The initial direction when the flue gas enters the tower body 1, that is, the direction perpendicular to the length of the tower body 1, is the flue gas discharge direction. The rain curtain groove 41 is extended along the direction of the flue gas discharge, and several rain curtain grooves 41 are parallel to each other and spaced apart. The flue gas can move upward from the middle of the rain curtain groove 41. The flue gas discharged into the tower body 1 is divided into several small streams by the water curtain in the direction of movement, so that the flue gas reduces its potential energy and enters the stratification plate 3. The stratification plate 3 is a wave structure, and the flue gas is rectified and buffered through the through groove 331. The rain tray 4 is suspended below the layered plate 3, and a mixed liquid water curtain is formed through the rain curtain groove 41 to further desulfurize the flue gas. The layered plate 3 effectively prevents the flue gas from directly impacting the nozzle 2, reducing the scouring and clogging of the nozzle 2. The water curtain of the rain tray 4 can separate the flue gas into small streams to facilitate subsequent reactions. At the same time, the water curtain increases the contact area between the flue gas and the desulfurizer, improving the desulfurization effect.

[0035] Furthermore, a connecting ring 34 is provided on the outer peripheral side of the stratified plate 3. The outer wall of the connecting ring 34 is connected to the inner wall of the tower body 1, thereby cooperating with the stratified plate 3 to partition the space inside the tower body 1, so that the flue gas can only move through the through groove 331. The upper wall of the connecting ring 34 is higher than the wave crest 31 of the stratified plate 3, and is used to gather the desulfurizer sprayed above the stratified plate 3 and the mixed liquid after the reaction.

[0036] Furthermore, a gap is left between the rain tray 4 and the inner wall of the tower body 1, and smoke can pass through the gap to disperse large amounts of smoke and prevent the smoke from excessively gathering at the rain curtain groove 41. The rain tray 4 is provided with an outer edge 42, and the outer edge 42 is higher than the upper surface of the rain tray 4. The outer edge 42 blocks the mixed liquid from flowing out of the edge of the rain tray 4, so that the mixed liquid can only flow down from the rain curtain groove 41.

[0037] Furthermore, a support rod 35 is provided in the drain pipe 322, and the support rod 35 is a round rod with a diameter smaller than the inner diameter of the drain pipe 322. One end of the support rod 35 is connected to the rain tray 4, and the other end is connected to the drain pipe 322 through a support rod 351. The support rod 351 is provided at the end of the support rod 35, and the support rod 35 is connected to the middle of the support rod 351. The support rod 351 and the support rod 351 form a T-shaped structure. A plurality of support rods 351 can be provided, but they cannot be provided too densely to cause the gaps between the support rods 351 to be blocked.

[0038] Furthermore, at least two spray racks are provided in the absorption layer 12. For the convenience of description, the spray racks are divided into a first spray rack 21 and a second spray rack 22 in this embodiment. The first spray rack 21 and the second spray rack 22 both include a main confluence pipe 211 and a plurality of branch pipes 212. The lifting pipe 17 penetrates into the tower body 1 and is connected to the middle of the confluence main pipe. The plurality of branch pipes 212 are spaced perpendicular to the confluence main pipe. The branch pipes 212 extend in a direction away from the confluence main pipe. The plurality of nozzles 2 are evenly spaced on the branch pipes 212. The first spray rack 21 and the second spray rack 22 are spaced apart in the direction of gravity, and the plurality of nozzles 2 are staggered relative to each other.

[0039] Furthermore, a demisting sheet 5 is provided in the demisting layer 13. The demisting sheet 5 includes a plurality of curved strips 51 arranged in parallel with each other. The curved strips 51 are arranged perpendicular to the length direction of the tower body 1. The cross section of the curved strips 51 is S-shaped. The S-shaped cross section increases the residence time and disturbance of the flue gas in the demisting sheet 5, further improving the dust removal efficiency. When the gas containing mist flows through the demisting sheet 5 at a certain speed, due to the inertial impact of the gas, the mist collides with the corrugated plate and the liquid droplets gathered are so large that the gravity generated by the mist itself exceeds the combined force of the gas's rising force and the liquid surface tension, and the droplets are separated from the surface of the corrugated plate. The multi-fold structure of the curved strips 51 increases the chance of the mist being captured, and the mist that is not removed is captured at the next turn through the same action, and the repeated action greatly improves the demisting efficiency. After the gas passes through the curved strips 51, it basically does not contain mist. The flue gas passes through the curved channel of the demisting sheet 5, and the droplets entrained in the air flow are separated under the action of inertial force and gravity. The flue gas after desulfurization flows through the demister sheet 5 at a certain speed, and the flue gas is rapidly and continuously changed in direction of movement. Due to the effects of centrifugal force and inertia, the mist droplets in the flue gas hit the demister sheet 5 and are captured.

[0040] Furthermore, a first water spray rack 52 for spraying oxygen upward is provided below the demister sheet 5. A second water spray rack 53 for spraying water downward is provided above the demister sheet 5. Water is sprayed on the demister sheet 5 by the first water spray rack 52 and the second water spray rack 53, and the flue gas in the demister sheet 5 is fully atomized by spraying water in the up and down directions. The first water spray rack 52 and the second water spray rack 53 are collected in the water supply pipe 54 and pass through the tower body 1 to the outside, and then connected to the water supply equipment 541. The scale accumulated on the demister sheet 5 is flushed by flushing water through the water spray rack to prevent the demister sheet 5 from being blocked.

[0041] In order to realize the intelligent operation of the flue gas desulfurization tower. At the air inlet pipe 15, a temperature detection element is arranged on the inner wall of the tower body 1, and the temperature of the flue gas entering the desulfurization tower is detected by the temperature detection element. The temperature cannot exceed 140°C, otherwise the equipment in the tower will be damaged. A pH value monitoring element is arranged on the outer edge 42 of the rain tray 4, which is used to test the pH value of the mixed liquid received by the rain tray 4, so as to judge the degree of sufficiency of the reaction. A sulfur dioxide concentration detection element is arranged at the rear section of the demisting layer 13 to detect the sulfur content of the flue gas after the reaction of the absorption layer 12, so as to judge the desulfurization rate of the flue gas, to adjust the spraying amount of the desulfurizer in the previous process, and to adjust the spraying amount and the amount of the agent added, so as to meet the requirements before discharge. A humidity testing element is arranged in the discharge layer 14 to judge the amount of water sprayed. Excessive amount will cause the slurry particles after the reaction to flow out.

[0042] The implementation principle of an intelligent flue gas desulfurization tower in the embodiment of the present application is: The internal space of the tower body 1 is divided into a slurry layer 11, an absorption layer 12, a demisting layer 13 and a discharge layer 14, each of which is responsible for the storage of desulfurizer, desulfurization reaction, atomization reaction and gas emission. The layered plate 3 is a wave structure, which rectifies and buffers the flue gas through the through groove 331; the rain tray 4 is suspended below the layered plate 3, and a mixed liquid water curtain is formed through the rain curtain groove 41 to further desulfurize the flue gas. The layered plate 3 effectively prevents the flue gas from directly impacting the nozzle 2, reducing the scouring and blockage of the nozzle 2; the water curtain of the rain tray 4 increases the contact area between the flue gas and the desulfurizer, and improves the desulfurization effect. The lifting pipe 17 transports the desulfurizer to the spray rack in the absorption layer 12 through the lifting pump 171, and the spray rack sprays the desulfurizer evenly into the flue gas through the branch pipe 212 and the nozzle 2.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent flue gas desulfurization tower, comprising a tower body (1) and a plurality of riser pipes (17), wherein the space inside the tower body (1) is divided into a slurry layer (11), an absorption layer (12), a demisting layer (13) and a discharge layer (14) from bottom to top; a plurality of nozzles (2) are arranged in the absorption layer (12); the riser pipe (17) extracts desulfurization agent from the slurry layer (11) and supplies it to the nozzles (2); an air inlet pipe (15) is arranged between the slurry layer (11) and the absorption layer (12); Features: The tower body (1) is provided with a layered plate (3) and a rain tray (4), wherein the layered plate (3) is located between the air inlet pipe (15) and the absorption layer (12); the layered plate (3) is a wave structure, and a plurality of through grooves (331) are provided at intervals on the wave side (33) of the layered plate (3); a plurality of the nozzles (2) are provided corresponding to the wave crests (31) of the layered plate (3); a plurality of drainage pipes (322) are connected to the bottom of the wave troughs (32) of the layered plate (3); the rain tray (4) is suspended below the layered plate (3), and a plurality of rain curtain grooves (41) are provided on the rain tray (4); the drainage pipe (322) corresponds to the rain tray (4) and is staggered from the rain curtain grooves (41); a plurality of the rain curtain grooves (41) are provided along the flue gas discharge direction, and a plurality of the rain curtain grooves (41) are provided at intervals.

2. The intelligent flue gas desulfurization tower according to claim 1 is characterized in that: A connecting ring (34) is provided on the outer peripheral side of the layered plate (3), the connecting ring (34) is connected to the inner wall of the tower body (1), and the upper wall of the connecting ring (34) is higher than the wave crest (31) of the layered plate (3); and a temperature detection element is provided at the air inlet pipe (15).

3. The intelligent flue gas desulfurization tower according to claim 1 is characterized in that: The rain tray (4) is provided with an outer edge (42), and the outer edge (42) is higher than the upper surface of the rain tray (4); and a pH value monitoring element is provided on the rain tray (4).

4. The intelligent flue gas desulfurization tower according to claim 3 is characterized in that: A gap is left between the drainage pipe (322) and the rain tray (4), and a support rod (35) is provided in the drainage pipe (322), one end of the support rod (35) is connected to the rain tray (4), and the other end is connected to the drainage pipe (322) via a support rod (351).

5. The intelligent flue gas desulfurization tower according to claim 1 is characterized in that: At least two spray racks are arranged in the absorption layer (12), the spray racks comprising a central pipe (211) and a plurality of branch pipes (212), the plurality of spray racks are arranged at intervals along the gravity direction, the plurality of spray heads (2) are evenly arranged at intervals on the branch pipes (212), and the plurality of spray heads (2) are arranged in a staggered manner relative to each other.

6. The intelligent flue gas desulfurization tower according to claim 1 is characterized in that: The demisting layer (13) is provided with a demisting sheet (5), the demisting sheet (5) comprising a plurality of curved strips (51) arranged parallel to each other; the curved strips (51) are arranged perpendicular to the length direction of the tower body (1); and the emission layer (14) is provided with a sulfur dioxide concentration detection element.

7. The intelligent flue gas desulfurization tower according to claim 6 is characterized in that: The curved strip (51) has an S-shaped cross section.

8. The intelligent flue gas desulfurization tower according to claim 7 is characterized in that: A first water spray frame (52) for spraying liquid medium upwards is arranged below the demisting sheet (5).

9. The intelligent flue gas desulfurization tower according to claim 8, characterized in that: A second water spray frame (53) for spraying liquid medium downwards is arranged above the demisting sheet (5).

10. The intelligent flue gas desulfurization tower according to claim 1, characterized in that: The discharge layer (14) comprises an exhaust pipe (16) connected to the outside; the exhaust pipe (16) is perpendicular to the tower body (1), and a bevel (141) is performed at the connection between the exhaust pipe (16) and the tower body (1); and a humidity testing element is arranged in the discharge layer (14).

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