Multi-layer rotational flow coupling diversion tower for flue gas desulfurization and denitrification

Abstract

The utility model relates to the technical field of desulfurization and denitrification equipment, in particular to a multi-layer rotational flow coupling diversion tower for flue gas desulfurization and denitrification, which comprises a barrel, a plurality of multi-layer rotational flow components used for improving gas-liquid mixing effect are mounted on the upper portion inside the barrel, and the multi-layer rotational flow components are connected and fixed through coupling components. A flow guide assembly is installed below the multi-layer rotational flow assembly, one side of the upper portion of the barrel is connected with a liquid conveying pipe, and one end of the liquid conveying pipe is vertically arranged along the middle of the coupling assembly. According to the multi-layer rotational flow coupling diversion tower for flue gas desulfurization and denitrification, the multiple layers of rotational flow assemblies are arranged, and the rotational flow directions of every two adjacent layers of rotational flow blade sets are opposite, so that the turbulence degree of flue gas is greatly enhanced. When flue gas sequentially passes through the multiple layers of rotational flow assemblies, the flowing direction of the flue gas is continuously changed, and the flue gas is fully contacted and mixed with desulfurization and denitrification liquid sprayed out from the liquid conveying pipe through the vertical pipe, the branch pipes and the atomization nozzles. By means of the design, the gas-liquid contact area is greatly increased, and the mass transfer process is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of desulfurization and denitrification equipment, specifically to a multi-layer swirl coupling guide tower for flue gas desulfurization and denitrification. Background Technology

[0002] With the acceleration of industrialization, the large amounts of sulfur- and nitrogen-containing flue gas generated in industrial production have caused serious environmental pollution, leading to environmental problems such as acid rain and smog, and endangering ecological balance and human health. Therefore, efficient flue gas desulfurization and denitrification technologies have become a key research focus and hot topic in the field of environmental protection.

[0003] Currently, various flue gas desulfurization and denitrification equipment and technologies exist on the market. For example, patent application number [202020957467.6] discloses a spray-type multi-stage desulfurization and denitrification tower. This tower uses multiple spray layers to allow the desulfurization and denitrification liquid to react with the rising flue gas within the tower. However, this structure has significant drawbacks. The gas-liquid mixing effect mainly depends on the coverage of the spray and the degree of liquid dispersion. In actual operation, it is difficult for the liquid spray to evenly cover the entire flue gas cross-section, resulting in some flue gas not being able to fully contact the desulfurization and denitrification agent, leading to low desulfurization and denitrification efficiency. Simultaneously, the flue gas flow path within the tower is relatively simple, and the flue gas residence time is limited, which is not conducive to the full reaction. Furthermore, the tower lacks effective guidance and optimization of flue gas flow, making it difficult to ensure uniform distribution of flue gas in each reaction zone, affecting the overall treatment effect.

[0004] Some desulfurization and denitrification equipment using swirl structures, while enhancing gas-liquid mixing to some extent by causing the flue gas to rotate through swirl blades, are mostly single-layer swirl designs, resulting in insufficient intensity and sustainability of gas-liquid mixing. Furthermore, the swirl components and liquid transport structures in these devices lack coordination, failing to fully leverage the enhancing effect of swirl on the mass transfer process and making it difficult to meet increasingly stringent environmental emission standards. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer swirl-coupled flow guide tower for flue gas desulfurization and denitrification, so as to solve the problem mentioned in the background art that liquid spraying is difficult to uniformly cover the entire flue gas cross section, resulting in some flue gas not being able to fully contact the desulfurization and denitrification agent, and the desulfurization and denitrification efficiency being low.

[0006] To achieve the above objectives, this utility model provides a multi-layer swirl coupling guide tower for flue gas desulfurization and denitrification, comprising a cylindrical body. Several multi-layer swirl components for increasing gas-liquid mixing are installed on the upper part of the cylindrical body. The multi-layer swirl components are connected and fixed to each other by coupling components. A guide component is installed below the multi-layer swirl components. A liquid delivery pipe is connected to one side of the upper part of the cylindrical body, and one end of the liquid delivery pipe is vertically arranged along the middle of the coupling component.

[0007] This device features a multi-layered swirl assembly located above the interior of the cylinder. The swirl blades cause the flue gas to rotate, with multiple layers arranged in opposite directions to continuously change the flow direction of the flue gas and enhance turbulence. A coupling assembly connects and fixes the multi-layered swirl assembly to ensure structural stability. A flow guide assembly directs the flue gas entering through the inlet to the multi-layered swirl assembly, initially adjusting the flow direction of the flue gas. A liquid delivery pipe is vertically positioned along the middle of the coupling assembly to facilitate the delivery of desulfurization and denitrification liquid to the center of the swirl area.

[0008] Preferably, the top of the cylinder has an exhaust port, and the bottom side of the cylinder has an air inlet.

[0009] This design places the exhaust port and the air inlet on the top and bottom sides of the cylinder, respectively. Based on the basic principle of gas flow, it utilizes the density difference of the flue gas itself and the external pressure difference to allow the flue gas containing pollutants to enter the cylinder from the air inlet, and after treatment, it is discharged from the exhaust port, forming a stable flue gas flow channel.

[0010] Preferably, the bottom of the cylinder is connected to a liquid collection chamber, and a drain pipe is connected to one side of the liquid collection chamber.

[0011] This setup is based on the principle of gravity. The liquid generated during the desulfurization and denitrification process flows downward under the action of gravity and collects in the liquid collection chamber at the bottom of the cylinder. The liquid collection chamber can discharge the liquid through the drain pipe for further treatment.

[0012] Preferably, the multi-layer swirl assembly includes a blade group formed by several swirl blades arranged in a ring at intervals. An outer ring is installed at the outer end of the blade group, and a central disk is installed in the middle of the blade group. The swirl direction of the upper blade group is opposite to that of the lower blade group.

[0013] This design features swirling blades arranged in a ring at intervals to form a blade group. When flue gas passes through, the blades exert a force on the flue gas, causing it to rotate. The outer ring and central disk enhance the structural strength of the blade group. The upper and lower blade groups have opposite swirling directions, which causes the flow direction of the flue gas to continuously change as it passes through the multi-layer swirling assembly, continuously enhancing the degree of turbulence.

[0014] Preferably, the upper and lower surfaces of the central disk are provided with annular grooves, the coupling assembly includes a cylindrical tube, and retaining rings are installed at the upper and lower ends of the cylindrical tube. The central disk and the cylindrical tube are mated and engaged through the annular grooves and retaining rings.

[0015] The annular groove of the central disk and the retaining rings at both ends of the cylindrical tube of the coupling component are connected by a snap-fit ​​mechanism. By utilizing the snap-fit ​​principle of the mechanical structure, a stable connection and fixation between the multi-layer vortex components can be achieved.

[0016] Preferably, one end of the infusion tube is connected to a vertical pipe, which vertically passes through the cylindrical tube and the central disc. Several branch pipes are connected to the outer wall of the vertical pipe, and the branch pipes extend out from the side wall of the cylindrical tube and are equipped with atomizing nozzles.

[0017] This system connects the infusion pipe to the vertical pipe, which runs through the cylindrical tube and the central disc. The branch pipe extends from the side wall of the cylindrical tube and is equipped with an atomizing nozzle. Utilizing liquid pressure and pipeline transportation principles, the desulfurization and denitrification liquid is transported from the infusion pipe to the atomizing nozzle, which then atomizes the liquid and sprays it into the swirl zone.

[0018] Preferably, the flow guiding component includes a column, the top of which is connected and fixed to the bottom of the multi-layer vortex component, and a spiral flow guiding plate is installed on the outside of the column.

[0019] The outer side of the column of this flow guiding component is equipped with a spiral guide vane. Based on the principle of fluid mechanics, the spiral guide vane guides the flue gas entering the cylinder, causing the flue gas to rise along the spiral path, be evenly distributed and guided to the multi-layer swirl component.

[0020] Preferably, the inner wall of the cylinder is also provided with an anti-corrosion coating.

[0021] The anti-corrosion coating used in this system is made of corrosion-resistant epoxy resin. The chemical stability of the material forms a protective film inside the cylinder, isolating acidic substances in the flue gas and corrosive liquids generated during the desulfurization and denitrification process from contact with the cylinder material.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this multi-layer swirl-coupled flow guide tower for flue gas desulfurization and denitrification, the turbulence of the flue gas is greatly enhanced by setting up multiple layers of swirl components with adjacent layers of swirl blades rotating in opposite directions. As the flue gas passes through the multi-layer swirl components sequentially, its flow direction continuously changes, ensuring full contact and mixing with the desulfurization and denitrification liquid sprayed from the delivery pipe through the vertical pipe, branch pipe, and atomizing nozzle. This design significantly increases the gas-liquid contact area, strengthens the mass transfer process, and effectively improves the reaction efficiency between the desulfurization and denitrification agent and pollutants in the flue gas compared to traditional equipment, thereby significantly improving the desulfurization and denitrification effect.

[0024] Spiral guide vanes are installed on the outer side of the column of the flow guiding assembly, which can uniformly guide the flue gas entering the cylinder from the inlet to the multi-layer swirl assembly, initially adjusting the flow direction and distribution of the flue gas. The multi-layer swirl assembly causes the flue gas to form a swirling motion, prolonging the residence time of the flue gas in the tower. At the same time, the multi-layer counter-swirling design further increases the complexity of the flue gas movement path, providing more sufficient time for the desulfurization and denitrification reactions and ensuring more complete reactions.

[0025] The multi-layer cyclone components are connected and fixed together by coupling components. The annular groove of the central disk mates with the retaining rings at both ends of the cylindrical tube. This structure not only ensures the stability of the multi-layer cyclone component connection but also facilitates installation and disassembly, making equipment maintenance and repair convenient. Simultaneously, the stable structure helps maintain the continuity and stability of the flue gas cyclone motion, ensuring the stability of desulfurization and denitrification effects. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the multilayer swirl assembly in this utility model;

[0028] Figure 3 This is a schematic diagram of the infusion tube in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Cylinder body; 11. Air inlet; 12. Exhaust outlet; 13. Liquid collection chamber; 131. Drain pipe; 2. Multi-layer swirl assembly; 21. Swirl blades; 22. Outer ring; 23. Central disc; 231. Annular groove; 3. Coupling assembly; 31. Cylindrical cylinder; 32. Snap ring; 4. Flow guide assembly; 5. Infusion pipe; 51. Vertical pipe; 52. Branch pipe; 53. Atomizing nozzle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a multi-layer swirl-coupled flow guide tower for flue gas desulfurization and denitrification, such as Figure 1 As shown, the device includes a cylinder 1. Several multi-layer swirling components 2 for increasing gas-liquid mixing effect are installed on the upper part of the cylinder 1. The multi-layer swirling components 2 are connected and fixed to each other by a coupling component 3. A flow guiding component 4 is installed below the multi-layer swirling components 2. An infusion pipe 5 is connected to one side of the upper part of the cylinder 1. One end of the infusion pipe 5 is vertically set along the middle of the coupling component 3.

[0033] The multi-layer swirling assembly 2, located above the inner part of the cylinder 1, causes the flue gas to rotate through swirling blades. The multiple layers, with adjacent layers exhibiting opposite swirling directions, continuously alter the flue gas flow direction, enhancing turbulence. A coupling assembly 3 connects and fixes the multi-layer swirling assembly 2, ensuring structural stability. A flow guiding assembly 4 directs the flue gas entering through the inlet 11 to the multi-layer swirling assembly 2, initially adjusting the flue gas flow direction. A liquid delivery pipe 5 is vertically positioned along the center of the coupling assembly 3, facilitating the delivery of desulfurization and denitrification liquid to the center of the swirling area. This achieves efficient flue gas guidance and stable swirling, precisely delivering the desulfurization and denitrification liquid, creating conditions for thorough gas-liquid mixing, effectively improving the desulfurization and denitrification reaction efficiency, and ensuring stable equipment operation.

[0034] In this embodiment, as Figure 1 As shown, the top of the cylinder 1 is provided with an exhaust port 12, and the bottom side of the cylinder 1 is provided with an air inlet 11.

[0035] Exhaust port 12 and inlet port 11 are respectively located on the top and bottom sides of cylinder 1. Based on the basic principle of gas flow, utilizing the density difference of the flue gas itself and the external pressure difference, the flue gas containing pollutants enters cylinder 1 through inlet port 11, and after treatment, it is discharged through exhaust port 12, forming a stable flue gas flow channel. This ensures that the flue gas can enter and exit cylinder 1 in an orderly manner, allowing the flue gas to flow along a predetermined path within cylinder 1, providing stable airflow conditions for the desulfurization and denitrification reactions, and ensuring the normal operation of the equipment.

[0036] Specifically, such as Figure 1 As shown, a liquid collection chamber 13 is connected to the bottom of the cylinder 1, and a drain pipe 131 is connected to one side of the liquid collection chamber 13.

[0037] Based on the principle of gravity, the liquid generated during the desulfurization and denitrification process flows downward under the action of gravity and collects in the liquid collection chamber 13 at the bottom of the cylinder 1. The liquid collection chamber 13 can discharge the liquid through the drain pipe 131 for subsequent treatment. Timely collection and discharge of the liquid generated by the reaction prevents the liquid from accumulating in the cylinder 1 and affecting the operation of the equipment, facilitates centralized treatment of the liquid, realizes resource recovery or prevents secondary pollution.

[0038] Furthermore, such as Figure 1 , Figure 2 As shown, the multi-layer swirl assembly 2 includes a blade group formed by several swirl blades 21 arranged in a ring at intervals. An outer ring 22 is installed at the outer end of the blade group, and a central disk 23 is installed in the middle of the blade group. The swirl direction of the upper blade group is opposite to that of the lower blade group.

[0039] The swirl blades 21 are arranged in a ring at intervals to form a blade group. When flue gas passes through, the blades exert a force on the flue gas, causing it to rotate. The outer ring 22 and the central disk 23 enhance the structural strength of the blade group. The upper and lower blade groups have opposite swirl directions, causing the flow direction of the flue gas to continuously change as it passes through the multi-layer swirl assembly 2, continuously enhancing the turbulence. This significantly enhances the swirl effect and turbulence of the flue gas, greatly increases the gas-liquid contact area, strengthens the mass transfer process, prolongs the residence time of the flue gas in the tower, provides more sufficient conditions for the desulfurization and denitrification reactions, and improves the desulfurization and denitrification efficiency.

[0040] Furthermore, such as Figure 2 , Figure 3 As shown, the upper and lower surfaces of the central disk 23 are provided with annular grooves 231. The coupling component 3 includes a cylindrical tube 31, and retaining rings 32 are installed at the upper and lower ends of the cylindrical tube 31. The central disk 23 and the cylindrical tube 31 are connected and engaged through the annular grooves 231 and retaining rings 32.

[0041] The annular groove 231 of the central disk 23 and the retaining rings 32 at both ends of the cylindrical tube 31 of the coupling assembly 3 are engaged by a snap-fit ​​mechanism. Utilizing the snap-fit ​​principle of the mechanical structure, a stable connection and fixation between the multi-layer vortex assemblies 2 is achieved. This ensures the structural stability of the multi-layer vortex assemblies 2 during operation, maintains the continuity and stability of the flue gas vortex motion, and facilitates the installation, disassembly, and maintenance of the equipment, thereby reducing equipment maintenance costs.

[0042] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, one end of the infusion tube 5 is connected to a vertical tube 51, which vertically passes through the cylindrical tube 31 and the central disc 23. Several branch tubes 52 are connected to the outer wall of the vertical tube 51. The branch tubes 52 pass through the side wall of the cylindrical tube 31 and are equipped with atomizing nozzles 53.

[0043] The infusion pipe 5 connects to the vertical pipe 51, which passes through the cylindrical cylinder 31 and the central plate 23. A branch pipe 52 extends from the side wall of the cylindrical cylinder 31 and is fitted with an atomizing nozzle 53. Utilizing liquid pressure and pipeline transport principles, the desulfurization and denitrification liquid is delivered from the infusion pipe 5 to the atomizing nozzle 53. The atomizing nozzle 53 atomizes the liquid and sprays it into the swirl zone. This precisely delivers the desulfurization and denitrification liquid to the center of the flue gas swirl zone, ensuring thorough mixing with the swirling flue gas after atomization. This guarantees uniform liquid dispersion across the entire tower cross-section, preventing uneven liquid distribution and further improving desulfurization and denitrification efficiency.

[0044] Furthermore, such as Figure 1 As shown, the flow guiding component 4 includes a column, the top of which is connected and fixed to the bottom of the multi-layer vortex component 2, and a spiral flow guiding plate is installed on the outside of the column.

[0045] Spiral guide vanes are installed on the outer side of the column of the flow guiding component 4. Based on the principles of fluid mechanics, the spiral guide vanes guide the flue gas entering the cylinder 1, causing the flue gas to rise along a spiral path, be evenly distributed, and guided to the multi-layer swirl component 2. This effectively guides the flue gas to enter the multi-layer swirl component 2 evenly, optimizes the initial distribution of the flue gas in the cylinder 1, avoids excessively fast or slow local flow velocities of the flue gas, provides good flue gas flow conditions for the multi-layer swirl component 2 to function, and improves the overall desulfurization and denitrification effect.

[0046] Furthermore, the inner wall of cylinder 1 is also provided with an anti-corrosion coating.

[0047] The inner wall of cylinder 1 is coated with an anti-corrosion coating made of corrosion-resistant materials. Utilizing the chemical stability and physical barrier properties of these materials, a protective film is formed inside cylinder 1, isolating acidic substances in the flue gas and corrosive liquids generated during desulfurization and denitrification from contact with the cylinder material. This prevents corrosion of cylinder 1, protects its structural integrity, extends equipment lifespan, reduces the frequency of repairs or replacements due to corrosion damage, and lowers operating costs.

[0048] In operation, the multi-layer swirl-coupled flow guide tower for flue gas desulfurization and denitrification of this invention first introduces flue gas containing sulfur and nitrogen pollutants into the tower through the inlet 11 on one side of the bottom of the cylinder 1. Based on fluid mechanics principles, the spiral guide vanes on the outer side of the column of the flow guide assembly 4 guide the incoming flue gas, causing it to rise along a spiral path and be evenly distributed and guided to the multi-layer swirl assembly 2. This process initially adjusts the flow direction and distribution of the flue gas, preventing excessively fast or slow local flow velocities and creating favorable conditions for subsequent treatment.

[0049] After the flue gas enters the multi-layer swirl assembly 2, the swirl blade groups 21 of each layer begin to function. The swirl blades 21 are arranged in a ring at intervals. As the flue gas passes through, the blades exert a force on the flue gas, causing it to rotate. Because the upper and lower blade groups swirl in opposite directions, the flow direction of the flue gas continuously changes as it passes through the multi-layer swirl assembly 2, greatly enhancing the turbulence. This intense turbulence significantly increases the gas-liquid contact area, strengthens the mass transfer process, and prolongs the residence time of the flue gas within the tower, providing more sufficient time and space for the desulfurization and denitrification reactions.

[0050] The desulfurization and denitrification liquid enters from the inlet pipe 5 on one side of the upper part of the cylinder 1. The inlet pipe 5 is connected to the vertical pipe 51, which vertically passes through the cylindrical cylinder 31 of the coupling assembly 3 and the central disk 23 of the multi-layer swirl assembly 2. Several branch pipes 52 connected to the outer wall of the vertical pipe 51 extend out from the side wall of the cylindrical cylinder 31 and are equipped with atomizing nozzles 53. Utilizing liquid pressure and pipeline transportation principles, the liquid is transported to the atomizing nozzles 53, which atomize the liquid and spray it into the swirl area. The atomized liquid mixes thoroughly with the swirl flue gas and is evenly dispersed throughout the cross-section of the tower. The desulfurization and denitrification agents come into full contact with pollutants such as sulfur dioxide and nitrogen oxides in the flue gas, and a chemical reaction occurs. For example, in the desulfurization process, sulfur dioxide reacts with the alkaline desulfurizing agent to produce calcium sulfite, which is then oxidized to calcium sulfate; in the denitrification process, denitrification agents such as ammonia undergo a reduction reaction with nitrogen oxides, converting them into nitrogen and water, thereby achieving the purpose of desulfurization and denitrification.

[0051] The liquid produced during the desulfurization and denitrification reaction flows downwards according to gravity and collects in the liquid collection tank 13 at the bottom of the cylinder 1. The drain pipe 131 on one side of the liquid collection tank 13 can discharge these liquids for subsequent treatment, avoiding the accumulation of liquid in the tower and affecting the normal operation of the equipment. At the same time, it facilitates the centralized treatment of reaction products, realizing resource recovery or preventing secondary pollution.

[0052] After being fully reacted and purified by the multi-layer swirl assembly 2, the flue gas is discharged from the exhaust port 12 at the top of the cylinder 1. Based on the basic principle of gas flow, the flue gas density difference and external pressure difference are used to ensure that the purified flue gas can be discharged in an orderly manner, thus completing the entire flue gas desulfurization and denitrification process.

[0053] The anti-corrosion coating on the inner wall of cylinder 1 is made of corrosion-resistant material. Utilizing the chemical stability and physical barrier properties of the material, a protective film is formed inside cylinder 1, isolating acidic substances in the flue gas and corrosive liquids generated during desulfurization and denitrification from contact with the cylinder 1 material. This prevents corrosion of cylinder 1, protects the structural integrity of the equipment, and extends its service life. Simultaneously, the multi-layer cyclone components 2 are connected via the annular groove 231 and retaining ring 32 of the coupling component 3, ensuring the structural stability of the multi-layer cyclone components 2, maintaining the continuity and stability of the flue gas cyclone movement, and ensuring long-term stable operation of the equipment.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-layer cyclone coupled diversion tower for flue gas desulfurization and denitrification, comprising a cylindrical body (1), characterized in that: Several multi-layer swirling components (2) for increasing gas-liquid mixing effect are installed inside the upper part of the cylinder (1). The multi-layer swirling components (2) are connected and fixed to each other by coupling components (3). A flow guide component (4) is installed below the multi-layer swirling components (2). An infusion pipe (5) is connected to one side of the upper part of the cylinder (1). One end of the infusion pipe (5) is vertically arranged along the middle of the coupling component (3).

2. The multi-layer cyclone-coupled flow-guided tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The top of the cylinder (1) is provided with an exhaust port (12), and the bottom side of the cylinder (1) is provided with an air inlet (11).

3. The multi-layer cyclone-coupled flow-guided tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The bottom of the cylinder (1) is connected to a liquid collection chamber (13), and a drain pipe (131) is connected to one side of the liquid collection chamber (13).

4. The multi-layer cyclone-coupled flow-guided tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The multi-layer swirl assembly (2) includes a blade group formed by several swirl blades (21) arranged in a ring at intervals. An outer ring (22) is installed at the outer end of the blade group, and a central disk (23) is installed in the middle of the blade group. The swirl direction of the upper blade group is opposite to that of the lower blade group.

5. The multi-layer cyclone-coupled flow-guided tower for flue gas desulfurization and denitrification according to claim 4, characterized in that: The upper and lower surfaces of the central disk (23) are provided with annular grooves (231). The coupling component (3) includes a cylindrical tube (31). The upper and lower ends of the cylindrical tube (31) are equipped with retaining rings (32). The central disk (23) and the cylindrical tube (31) are connected and fitted through the annular grooves (231) and retaining rings (32).

6. The multi-layer cyclone-coupled flow-guided tower for flue gas desulfurization and denitrification according to claim 5, characterized in that: One end of the infusion tube (5) is connected to a vertical tube (51), which vertically passes through the cylindrical tube (31) and the central disc (23). Several branch tubes (52) are connected to the outer wall of the vertical tube (51), and the branch tubes (52) pass through the side wall of the cylindrical tube (31) and are equipped with atomizing nozzles (53).

7. The multi-layer cyclone-coupled flow tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The flow guiding component (4) includes a column, the top of which is connected and fixed to the bottom of the multi-layer vortex component (2), and a spiral flow guiding plate is installed on the outside of the column.

8. The multi-layer cyclone-coupled flow tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The inner wall of the cylinder (1) is also provided with an anti-corrosion coating.

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