A flue gas desulfurization and denitrification spray recovery equipment

Abstract

The present invention relates to the technical field of flue gas treatment, and in particular to a flue gas desulfurization and denitrification spray recovery equipment, comprising a recovery tube with a horizontal axis, an air intake pipe arranged at one end of the recovery tube and an exhaust structure arranged at the other end of the recovery tube, the air intake pipe is used to introduce flue gas into the recovery tube, the output end of the air intake pipe is directed vertically toward the inner wall of the recovery tube, and the exhaust structure is used to discharge the treated flue gas; by arranging a plurality of power plates distributed around the axis of the recovery tube, the flue gas is driven to rotate and flow, and combined with the movement of the flue gas along the axis of the recovery tube during supply, the flue gas forms a spiral path, which increases the contact time and area between the flue gas and the water mist sprayed by the spray structure, thereby improving the efficiency of desulfurization and denitrification.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a flue gas desulfurization and denitrification spray recovery device. Background Art

[0002] In many industrial fields such as modern power generation, steel smelting, and chemical industry, a large amount of flue gas is emitted. The flue gas generally contains a large amount of sulfide and nitrogen oxide. These two substances are extremely harmful to the environment and human body. Therefore, in the process of flue gas emission, it is necessary to carry out desulfurization and denitrification treatment. The commonly used treatment methods are filtration, spraying, demisting, tail gas emission, etc. When spraying, an alkaline solution, such as limestone slurry, ammonia water or other absorbents, is sprayed into the flue gas to make it contact and react with the sulfide and nitrate in the flue gas and adsorbed in the liquid, thereby achieving the purpose of desulfurization and denitrification. The commonly used spraying method is to directly spray the liquid into the flue gas through the nozzle. When the flue gas passes through the water mist area sprayed by the nozzle, the flue gas is treated once. If the flue gas needs to be sprayed multiple times, multiple groups of nozzles need to be set on the path of the flue gas. This structural method will cause the problem of excessive equipment size. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a flue gas desulfurization and denitrification spray recovery equipment, the specific technical solution adopted by the invention is:

[0004] A flue gas desulfurization and denitrification spray recovery device, comprising a recovery tube with a horizontal axis, an air intake pipe arranged at one end of the recovery tube and an exhaust structure arranged at the other end of the recovery tube, wherein the air intake pipe is used to introduce flue gas into the recovery tube, the output end of the air intake pipe is vertically directed toward the inner wall of the recovery tube, and the exhaust structure is used to discharge the treated flue gas;

[0005] Among them, a plurality of power plates are arranged in the recovery tube, and the plurality of power plates are distributed around the axis of the recovery tube, and the length direction of the power plates is along the axis direction of the recovery tube. When the plurality of power plates rotate around the axis of the recovery tube in the recovery tube, the power plates push the flue gas in the recovery tube to rotate and flow. A plurality of groups of spray structures are arranged in the middle of the recovery tube, and the plurality of groups of spray structures are distributed in an arc shape with the axis of the recovery tube as the reference axis, and the spray structures spray water mist formed by alkaline liquid toward the inner wall of the recovery tube.

[0006] Furthermore, fixed disks are rotatably provided on both end surfaces of the recovery cylinder, the fixed disks are coaxial with the recovery cylinder, and the fixed disks pass through the end surfaces of the recovery cylinder and extend into the interior of the recovery cylinder, the interior of the fixed disks is hollow and is used to transport the alkaline liquid in a high-pressure state;

[0007] The spray structure includes a liquid guiding channel installed between two fixed plates, the liquid guiding channel is connected to the fixed plates, a long slot plate is provided on the liquid guiding channel, and a plurality of spray groups are provided on the end surface of the long slot plate away from the axis of the recovery tube, the plurality of spray groups are arranged along the axis direction of the recovery tube, each spray group is composed of three nozzles, one of which is located in the middle, and the directions of the remaining two nozzles are inclined toward the middle nozzle.

[0008] Furthermore, each of the long slot plates is filled with a filling column, and the cross-sectional shape of the filling column is circular.

[0009] Furthermore, a liquid storage tank for storing alkaline liquid is provided at the bottom of the recovery cylinder, a pump body is provided on the recovery cylinder, and delivery pipes are provided at the input end and the output end of the pump body, one delivery pipe is connected to the liquid storage tank, and the other delivery pipe is connected to a fixed plate;

[0010] Wherein, a plurality of openings are provided between the recovery cylinder and the liquid storage tank.

[0011] Further, the exhaust structure includes an exhaust pipe, one end of which is mounted on a fixed plate, and the other end of which passes through another fixed plate and extends out;

[0012] The exhaust pipe is provided with a plurality of openings at the bottom thereof, and the plurality of openings are arranged along the axis direction of the recovery tube, and each opening is provided with a sealing plate, which seals the opening, and the sealing plate slides on the exhaust pipe, and the sealing plate and the exhaust pipe are connected by a spring sheet, and a sliding seat is provided on the exhaust pipe for sliding along the length direction of the exhaust pipe, and a ejector pin is provided on the sliding seat;

[0013] Wherein, the two side walls of the sealing plate along the length direction of the exhaust pipe are both arranged as inclined surfaces, and when the slide seat moves to the opening position, the ejector pin on the slide seat pushes the sealing plate away from the opening through the inclined surface on the sealing plate.

[0014] Furthermore, a threaded rod is rotatably arranged between the two fixed disks, and the threaded rod passes through the slide seat and is threadedly connected to each other, and a first motor is arranged on one of the fixed disks, and an output end of the first motor is connected to the threaded rod.

[0015] Furthermore, power rings are rotatably provided on both end faces of the inner wall of the recovery cylinder, each power ring is equipped with a transmission wheel, and the transmission wheel is powered by a second motor, a power plate is located between the two power rings, and the power plate is fixedly connected to the power rings.

[0016] Furthermore, an overflow pipe is provided at the bottom of the liquid storage tank, and a feed pipe is provided on the side wall of the liquid storage tank.

[0017] The advantages of the present invention are:

[0018] By setting up multiple power plates distributed around the axis of the recovery tube, the flue gas is driven to rotate and flow. Combined with the movement of the flue gas along the axis of the recovery tube during supply, the flue gas forms a spiral path, which increases the contact time and area between the flue gas and the water mist sprayed by the spray structure, thereby improving the efficiency of desulfurization and denitrification; the spray structure is distributed in an arc shape with the axis of the recovery tube as the reference axis, and sprays water mist toward the inner wall of the recovery tube. This design ensures that the water mist can vertically hit the inner wall of the recovery tube and diffuse around, increasing the coverage area of ​​the water mist and improving the adsorption capacity of the water mist on sulfides and nitrates in the flue gas; the traditional multi-stage spraying requires multiple groups of nozzles to be set on the flue gas path, This results in a bulky equipment. In this solution, the spiral flow of flue gas allows the flue gas to pass through the spray area for multiple treatments without adding additional spray structures, effectively reducing the total volume of the equipment. The spiral flow and continuous transportation of flue gas in the recovery tube enable the equipment to continuously treat the flue gas without interrupting the production process, thereby ensuring the continuity and efficiency of industrial production. In summary, this technical solution effectively solves the problems of excessive volume and low treatment efficiency in traditional flue gas treatment equipment through innovative design, while improving the treatment effect and flexibility of the equipment. It is an efficient, energy-saving and environmentally friendly flue gas desulfurization and denitrification treatment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the front side cross-sectional structure of the middle recovery cylinder;

[0022] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure of the right side cross-section of the middle recovery cylinder;

[0023] Figure 4 yes Figure 3 A schematic diagram of a partially enlarged structure of the middle spray structure;

[0024] Figure 5 yes Figure 3 A schematic diagram of a partially enlarged structure of the middle exhaust structure;

[0025] Markings in the accompanying drawings:

[0026] 1. Recovery cylinder; 2. Air inlet pipe; 3. Exhaust structure; 4. Power plate; 5. Spray structure; 6. Fixed plate; 7. Liquid guide channel; 8. Long slot plate; 9. Nozzle; 10. Filling column; 11. Liquid storage tank; 12. Pump body; 13. Delivery pipe; 14. Exhaust pipe; 15. Opening; 16. Closing plate; 17. Shrapnel; 18. Sliding seat; 19. Threaded rod; 20. First motor; 21. Power ring; 22. Transmission wheel; 23. Second motor; 24. Overflow pipe; 25. Feed pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., 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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0030] like Figures 1 to 3 As shown, a flue gas desulfurization and denitrification spray recovery device of the present invention comprises a recovery tube 1 with a horizontal axis, an air intake pipe 2 arranged at one end of the recovery tube 1, and an exhaust structure 3 arranged at the other end of the recovery tube 1, wherein the air intake pipe 2 is used to introduce flue gas into the recovery tube 1, and the output end of the air intake pipe 2 is vertically directed toward the inner wall of the recovery tube 1, and the exhaust structure 3 is used to discharge the treated flue gas;

[0031] Among them, a plurality of power plates 4 are arranged in the recovery tube 1, and the plurality of power plates 4 are distributed around the axis of the recovery tube 1, and the length direction of the power plates 4 is along the axis direction of the recovery tube 1. When the plurality of power plates 4 rotate around the axis of the recovery tube 1 in the recovery tube 1, the power plates 4 push the flue gas in the recovery tube 1 to rotate and flow. A plurality of groups of spray structures 5 are arranged in the middle of the recovery tube 1, and the plurality of groups of spray structures 5 are distributed in an arc shape with the axis of the recovery tube 1 as the reference axis, and the spray structures 5 spray water mist formed by alkaline liquid toward the inner wall direction of the recovery tube 1.

[0032] In detail, the recovery tube 1 is placed horizontally, the air inlet pipe 2 is installed at one end of the recovery tube 1, the output end of the air inlet pipe 2 extends into the recovery tube 1 and faces the inner wall of the recovery tube 1, and the exhaust structure 3 is installed at the other end of the recovery tube 1. A plurality of power plates 4 are distributed in a ring shape near the inner wall of the recovery tube 1, and the power plates 4 are used to provide driving force for the flue gas in the recovery tube 1. The surface where the power plates 4 are located passes through the axis of the recovery tube 1, and the spray structure 5 sprays water mist toward the inner wall of the recovery tube 1. In this way, the power plate 4 minimizes the blocking area of ​​the water mist sprayed by the spray structure 5, which facilitates reducing the influence of the power plate 4 on the water mist absorbing sulfides and nitrates in the flue gas, and because the spray structure 5 sprays water mist vertically toward the inner wall of the recovery tube 1, it is convenient to make the water mist vertically hit the inner wall of the recovery tube 1 and diffuse around, thereby improving the water mist coverage area and the water mist treatment effect on the flue gas.

[0033] When in use, the flue gas enters the recovery tube 1 through the air intake pipe 2, and the multiple power plates 4 push the flue gas to flow in a rotational manner along the circumferential inner wall of the recovery tube 1. At the same time, since the air intake pipe 2 continuously supplies flue gas, the flue gas moves in the recovery tube 1 along the axial direction of the recovery tube 1. Combining the two movement modes, the flue gas can flow in a spiral in the recovery tube 1, and the flue gas moves toward the exhaust structure 3, so that the flue gas can repeatedly pass through the area where the water mist is sprayed by the multiple spray structures 5 when moving, thereby realizing multiple and repeated adsorption treatment of the flue gas by the water mist, and this working mode does not affect the normal transportation of the flue gas, so that the equipment can conveniently perform continuous treatment of the flue gas.

[0034] It can be seen that since the spray structure 5 sprays water mist vertically toward the inner wall of the recovery tube 1, when the water mist hits the inner wall of the recovery tube 1, the water mist will diffuse to the surroundings, and the rotating power plate 4 can also perform impact and diffusion treatment on the water mist. Due to the action of gravity and the driving action of the power plate 4, part of the water mist will fall in the recovery tube 1, and part of the water mist will flow spirally with the flue gas in the recovery tube 1. In this way, the water mist sprayed by the spray structure 5 and the falling water mist will fully cover the upper area inside the spray structure 5, thereby increasing the water mist coverage area and improving its treatment effect on the flue gas. The impact of the water mist can help it to disperse again and reduce the volume of the water mist. The water mist flowing with the flue gas will continue to treat the flue gas. While the water droplets in the water mist adsorb the flue gas, the water droplets will adsorb each other and increase in volume. At this time, the water droplets will be adsorbed on the inner wall of the recovery tube 1 due to inertia and flow downward. In order to reduce the effect of the power plate 4 on the water droplets on the inner wall of the recovery tube 1, a gap is left between the power plate 4 and the inner wall of the recovery tube 1.

[0035] By setting a plurality of power plates 4 distributed around the axis of the recovery tube 1, the flue gas is driven to rotate and flow, and combined with the movement of the flue gas along the axis of the recovery tube 1 during supply, the flue gas forms a spiral path, which increases the contact time and area between the flue gas and the water mist sprayed by the spray structure 5, thereby improving the efficiency of desulfurization and denitrification; the spray structure 5 is distributed in an arc shape with the axis of the recovery tube 1 as the reference axis, and sprays water mist toward the inner wall of the recovery tube 1. This design ensures that the water mist can vertically hit the inner wall of the recovery tube 1 and diffuse in all directions, thereby increasing the coverage area of ​​the water mist and improving the adsorption capacity of the water mist on sulfides and nitrates in the flue gas; the traditional multi-stage spraying requires setting multiple spraying plates on the flue gas path. The plurality of nozzles makes the equipment bulky, while in the present solution, the spiral flow of the flue gas can realize multiple treatments of the flue gas through the spraying area, without adding additional spraying structures, effectively reducing the total volume of the equipment; the spiral flow and continuous transportation of the flue gas in the recovery cylinder 1 enable the equipment to continuously treat the flue gas without interrupting the production process, thereby ensuring the continuity and efficiency of industrial production; in summary, this technical solution effectively solves the problems of excessive volume and low treatment efficiency existing in traditional flue gas treatment equipment through innovative design, while improving the treatment effect and flexibility of the equipment, and is a highly efficient, energy-saving and environmentally friendly flue gas desulfurization and denitrification treatment technology.

[0036] like Figure 3 to Figure 4 As shown, fixed disks 6 are rotatably provided on both end surfaces of the recovery cylinder 1, the fixed disks 6 are coaxial with the recovery cylinder 1, and the fixed disks 6 pass through the end surfaces of the recovery cylinder 1 and extend into the interior of the recovery cylinder 1, the interior of the fixed disks 6 is hollow and is used to transport alkaline liquid in a high-pressure state;

[0037] The spray structure 5 includes a liquid conducting channel 7 installed between two fixed plates 6, the liquid conducting channel 7 is connected to the fixed plates 6, a long slot plate 8 is provided on the liquid conducting channel 7, and a plurality of spray groups are provided on the end surface of the long slot plate 8 away from the axis of the recovery tube 1, and the plurality of spray groups are arranged along the axis direction of the recovery tube 1, each spray group is composed of three nozzles 9, one of the nozzles 9 is located in the middle, and the directions of the remaining two nozzles 9 are inclined toward the middle nozzle 9.

[0038] In detail, the alkaline liquid can be introduced into the liquid guiding channel 7 through the fixed plate 6, and the alkaline liquid in the liquid guiding channel 7 is sprayed into the recovery cylinder 1 through the long groove plate 8 and the nozzle 9. Since the alkaline liquid is in a high-pressure state during transportation, when the alkaline liquid is sprayed out through the nozzle 9, it diffuses to the surroundings. Since the positions of the three nozzles 9 in each spray group are set, it is convenient to make the two nozzles 9 on both sides, when spraying liquid, impact the liquid sprayed from the middle nozzle 9, thereby realizing the self-impact diffusion effect of the liquid, and making it convenient for the liquid to quickly form water mist and diffuse over a large area.

[0039] like Figure 4 As shown, each of the long slot plates 8 is filled with a filling column 10, and the cross-sectional shape of the filling column 10 is circular.

[0040] In detail, by arranging the filling column 10 in the long slot plate 8, the internal space of the long slot plate 8 can be reduced, thereby increasing the liquid flow rate, thereby increasing the impact force when the liquid is sprayed out and improving the atomization degree.

[0041] like Figure 1 As shown, a liquid storage tank 11 for storing alkaline liquid is provided at the bottom of the recovery cylinder 1, and a pump body 12 is provided on the recovery cylinder 1. The input end and the output end of the pump body 12 are both provided with delivery pipes 13, one delivery pipe 13 is connected to the liquid storage tank 11, and the other delivery pipe 13 is connected to a fixed plate 6;

[0042] Wherein, a plurality of openings are provided between the recovery cylinder 1 and the liquid storage tank 11 .

[0043] In detail, the pump body 12 extracts the alkaline liquid in the liquid storage tank 11 through the two delivery pipes 13 and discharges it into the fixed plate 6. The alkaline liquid in the fixed plate 6 is then discharged into the multiple liquid guide channels 7, thereby realizing the supply of the alkaline liquid. At the same time, the alkaline liquid in the recovery cylinder 1 that has been adsorbed, recovered and condensed can flow back into the liquid storage tank 11 through the multiple ports, thereby realizing the reuse of the alkaline liquid.

[0044] like Figure 5 As shown, the exhaust structure 3 includes an exhaust pipe 14, one end of the exhaust pipe 14 is mounted on a fixed plate 6, and the other end of the exhaust pipe 14 passes through another fixed plate 6 and extends out;

[0045] The exhaust pipe 14 has a plurality of openings 15 at the bottom, and the plurality of openings 15 are arranged along the axis direction of the recovery tube 1. Each opening 15 is provided with a sealing plate 16, and the sealing plate 16 blocks the opening 15. The sealing plate 16 slides on the exhaust pipe 14, and the sealing plate 16 is connected to the exhaust pipe 14 through a spring sheet 17. A sliding seat 18 is provided on the exhaust pipe 14 for sliding along the length direction of the exhaust pipe 14, and a ejector pin is provided on the sliding seat 18.

[0046] The two side walls of the sealing plate 16 along the length direction of the exhaust pipe 14 are both arranged as inclined surfaces. When the slide seat 18 moves to the position of the opening 15 , the ejector pin on the slide seat 18 pushes the sealing plate 16 away from the opening 15 through the inclined surface on the sealing plate 16 .

[0047] In detail, when the sealing plate 16 deviates from the opening 15, the opening 15 is in an open state. At this time, the processed flue gas in the recovery tube 1 can enter the exhaust pipe 14 through the opening 15 and be discharged through the exhaust pipe 14, thereby realizing the exhaust work of the flue gas.

[0048] In the natural state, the spring 17 provides elastic thrust for the sealing plate 16 so that the sealing plate 16 is sealed on the opening 15. When the slide 18 moves to the position of the opening 15, the ejector pin on the slide 18 pushes the sealing plate 16 to slide away from the opening 15 through the inclined surface of the sealing plate 16, thereby controlling the opening of the opening 15.

[0049] Through the above-mentioned structural method, the position where the smoke in the recovery tube 1 enters the exhaust pipe 14 can be controlled, thereby controlling the path length of the spiral flow of the smoke in the recovery tube 1, and then adjusting the contact time between the smoke and the water mist, adapting to different smoke treatment requirements, and improving the flexibility and adaptability of the smoke treatment.

[0050] like Figure 1 and Figure 5 As shown, a threaded rod 19 is rotatably arranged between the two fixed disks 6 , and the threaded rod 19 passes through the slide 18 and is threadedly connected to each other. A first motor 20 is arranged on one of the fixed disks 6 , and the output end of the first motor 20 is connected to the threaded rod 19 .

[0051] In detail, the first motor 20 can push the slide 18 to move via the threaded rod 19 , thereby adjusting the position of the slide 18 and the entry position of the smoke on the exhaust pipe 14 .

[0052] like Figure 1 and Figure 3 As shown, power rings 21 are rotatably provided on the two end faces of the inner wall of the recovery cylinder 1, and each power ring 21 is equipped with a transmission wheel 22, and the transmission wheel 22 is powered by a second motor 23. The power plate 4 is located between the two power rings 21, and the power plate 4 is fixedly connected to the power ring 21.

[0053] In detail, the power ring 21 and the transmission wheel 22 that are connected to each other are rotatably installed on an end face inside the recovery drum 1, the second motor 23 is fixed on the outer wall of the recovery drum 1, and the second motor 23 is connected to the transmission wheel 22. The second motor 23 and the transmission wheel 22 drive the power ring 21 to rotate, thereby driving the power plate 4 to perform circular motion around the axis of the recovery drum 1.

[0054] like Figure 1 As shown, an overflow pipe 24 is provided at the bottom of the liquid storage tank 11, and a feed pipe 25 is provided on the side wall of the liquid storage tank 11.

[0055] In detail, the alkaline liquid can be slowly and continuously supplied into the liquid storage tank 11 through the feed pipe 25, and the excess alkaline liquid in the liquid storage tank 11 can overflow through the overflow pipe 24, thereby continuously replacing the alkaline liquid in the liquid storage tank 11, making it convenient to discharge the recovered sulfide and nitrate in time.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flue gas desulfurization and denitrification spray recovery equipment, characterized in that: It comprises a recovery tube (1) with a horizontal axis, an air intake pipe (2) arranged at one end of the recovery tube (1), and an exhaust structure (3) arranged at the other end of the recovery tube (1), the air intake pipe (2) is used to introduce flue gas into the recovery tube (1), the output end of the air intake pipe (2) is vertically directed toward the inner wall of the recovery tube (1), and the exhaust structure (3) is used to discharge the treated flue gas; Wherein, a plurality of power plates (4) are arranged in the recovery tube (1), the plurality of power plates (4) are distributed around the axis of the recovery tube (1), and the length direction of the power plates (4) is along the axis direction of the recovery tube (1); when the plurality of power plates (4) rotate around the axis of the recovery tube (1) in the recovery tube (1), the power plates (4) push the smoke in the recovery tube (1) to rotate and flow; a plurality of groups of spray structures (5) are arranged in the middle of the recovery tube (1), the plurality of groups of spray structures (5) are distributed in an arc shape with the axis of the recovery tube (1) as a reference axis, and the spray structures (5) spray water mist formed by alkaline liquid toward the inner wall of the recovery tube (1); A plurality of power plates (4) are distributed in a ring shape near the inner wall of the recovery tube (1), and the surface where the power plates (4) are located passes through the axis of the recovery tube (1); Fixed disks (6) are rotatably provided on both end surfaces of the recovery cylinder (1); the fixed disks (6) are coaxial with the recovery cylinder (1), and the fixed disks (6) pass through the end surfaces of the recovery cylinder (1) and extend into the interior of the recovery cylinder (1); the interior of the fixed disks (6) is hollow and is used to transport alkaline liquid in a high-pressure state; The spray structure (5) comprises a liquid guide channel (7) installed between two fixed plates (6), the liquid guide channel (7) being in communication with the fixed plates (6), a long slot plate (8) being provided on the liquid guide channel (7), a plurality of spray groups being provided on the end surface of the long slot plate (8) away from the axis of the recovery tube (1), the plurality of spray groups being arranged along the axis of the recovery tube (1), each spray group being composed of three spray ports (9), one of which is located in the middle, and the directions of the remaining two spray ports (9) are inclined toward the middle spray port (9); Each of the long slot plates (8) is filled with a filling column (10), and the cross-sectional shape of the filling column (10) is circular; A liquid storage tank (11) for storing alkaline liquid is arranged at the bottom of the recovery cylinder (1), a pump body (12) is arranged on the recovery cylinder (1), and delivery pipes (13) are arranged at the input end and the output end of the pump body (12), one delivery pipe (13) is connected to the liquid storage tank (11), and the other delivery pipe (13) is connected to a fixed plate (6); Wherein, a plurality of openings are provided between the recovery cylinder (1) and the liquid storage tank (11); The exhaust structure (3) comprises an exhaust pipe (14), one end of the exhaust pipe (14) being mounted on a fixing plate (6), and the other end of the exhaust pipe (14) passing through another fixing plate (6) and extending out; The exhaust pipe (14) is provided with a plurality of openings (15) at the bottom thereof, the plurality of openings (15) being arranged along the axial direction of the recovery tube (1), each opening (15) being provided with a sealing plate (16), the sealing plate (16) sealing the opening (15), and the sealing plate (16) sliding on the exhaust pipe (14), the sealing plate (16) being connected to the exhaust pipe (14) via a spring sheet (17), the exhaust pipe (14) being provided with a sliding seat (18) sliding along the length direction of the exhaust pipe (14), the sliding seat (18) being provided with a ejector pin; Wherein, two side walls of the sealing plate (16) along the length direction of the exhaust pipe (14) are both arranged as inclined surfaces, and when the slide seat (18) moves to the position of the opening (15), the ejector pin on the slide seat (18) pushes the sealing plate (16) away from the opening (15) via the inclined surface on the sealing plate (16); A threaded rod (19) is rotatably arranged between the two fixed disks (6), and the threaded rod (19) passes through the slide seat (18) and is threadably connected to each other, a first motor (20) is arranged on one of the fixed disks (6), and an output end of the first motor (20) is connected to the threaded rod (19); Power rings (21) are rotatably provided on both end surfaces of the inner wall of the recovery barrel (1), each power ring (21) is provided with a transmission wheel (22), and the transmission wheel (22) is powered by a second motor (23), a power plate (4) is located between the two power rings (21), and the power plate (4) is fixedly connected to the power rings (21).

2. The flue gas desulfurization and denitrification spray recovery equipment according to claim 1, characterized in that: An overflow pipe (24) is provided at the bottom of the liquid storage tank (11), and a feed pipe (25) is provided on the side wall of the liquid storage tank (11).

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