A high-efficiency denitrification reducing agent spraying device and its working method

Abstract

The present invention relates to the technical field of flue gas desulfurization and denitrification, and specifically to a high-efficiency denitrification reducing agent spraying device and its working method. It comprises a nozzle, a feeding pipeline and a flow regulating device, wherein an adjusting rod is movably sleeved in the regulating cylinder of the flow regulating device, and a guide piston is fixedly connected to the end of the adjusting rod, and a spiral guide groove is provided on the guide piston; a storage oil cylinder is connected to the feeding pipeline, and a storage piston of the storage oil cylinder reciprocates in the cylinder shell, and the cylinder shell is connected to the feeding pipeline. The improved denitrification reducing agent spraying device can realize the adjustment of the reducing agent spray flow rate and the adjustment of the spraying angle, which greatly improves the efficiency of denitrification; at the same time, the storage oil cylinder can realize the temporary storage of the reducing agent remaining in the feeding pipeline, the rotary joint and the flow regulating device, thereby avoiding the corrosion of the reducing agent to the corresponding components.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas desulfurization and denitrification, and in particular to a high-efficiency denitrification reducing agent spraying device and a working method thereof. Background Art

[0002] Currently, national and local standards for boiler flue gas emissions are becoming increasingly stringent. SNCR flue gas denitrification technology is widely used due to its simple system operation, low investment, simple facilities, and minimal footprint. SNCR technology generally uses three types of reducing agents: liquid ammonia, aqueous ammonia, and urea. Regarding reaction temperatures, ammonia is more efficient than urea when used as the reducing agent between 730°C and 950°C. Urea is even more efficient when the reaction zone temperature is above 950°C.

[0003] In actual denitrification projects, the flue gas flow rate emitted by the boiler during different working time periods fluctuates greatly. When the flue gas volume decreases, the reducing agent flow rate required for flue gas denitrification also decreases. However, the spraying flow rate of the reducing agent spraying device in the existing technology cannot be adjusted, so the reducing agent is wasted.

[0004] Furthermore, the large tonnage of boilers results in high flue gas volumes and a thicker exhaust duct. The spray guns currently used on the market have a relatively narrow spray diffusion angle, typically only 15° to 20°, making it difficult to achieve uniform distribution of the reducing agent in large-diameter exhaust pipes, resulting in low denitrification efficiency. Using a single spray gun to apply the reducing agent requires a long mixing distance for uniform mixing of the flue gas and reducing agent, resulting in wasteful flue gas flow, increased costs, and space constraints. Using multiple spray guns to increase uniformity also increases costs, installation, and maintenance workload. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a high-efficiency denitrification reducing agent spraying device and a working method thereof. The improved denitrification reducing agent spraying device can adjust the reducing agent spraying flow rate and the spraying angle, thereby greatly improving the denitrification efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A high-efficiency denitrification reductant spraying device comprises a nozzle, a feed line connected to a reductant storage tank, and a flow control device. The flow control device comprises an adjusting rod and an adjusting cylinder. The adjusting cylinder is a cylindrical cylinder with a hollow cavity. A sealing end cap is fixedly connected to the bottom end of the adjusting cylinder, and a guide sleeve with a cylindrical inner cavity is fixedly connected to the top end of the adjusting cylinder. The adjusting rod is movably disposed within the hollow cavity of the adjusting cylinder. One end of the adjusting rod passes through the sealing end cap and emerges from the adjusting cylinder. The end of the adjusting rod distal to the sealing end cap is fixedly connected to a guide piston. The guide piston is cylindrical and has a clearance fit within the cylindrical inner cavity of the guide sleeve. Driven by the adjusting rod, the guide piston can reciprocate axially along the cylindrical inner cavity of the guide sleeve. A spiral guide groove is defined on the outer surface of the guide piston, coaxially arranged with the guide piston.

[0008] The end of the guide sleeve away from the regulating cylinder is fixedly connected to a liquid outlet cover plate, on which a plurality of liquid outlets are evenly arranged. The upper top surface of the guide piston is fixedly provided with a plurality of throttling plugs, which are arranged corresponding to the liquid outlets.

[0009] The regulating cylinder is also fixed with a regulating cylinder feed pipe, which is connected to the hollow cavity of the regulating cylinder, and the other end of the regulating cylinder feed pipe is connected to the supply pipeline. The side of the liquid outlet cover away from the guide sleeve is connected to the nozzle.

[0010] Furthermore, the nozzle includes an outer nozzle tube and an inner nozzle tube, wherein the inner nozzle tube is sleeved inside the outer nozzle tube, and a compressed air flow channel is formed between the outer nozzle tube and the inner nozzle tube. A compressed air nozzle is provided on the outer nozzle tube, and one end of the compressed air nozzle is connected to the compressed air flow channel. The bottom end of the inner nozzle tube is fixedly connected to the liquid outlet cover plate, and a gun tip air hole is provided at the top end of the inner nozzle tube, which connects the compressed air flow channel with the interior of the inner nozzle tube. The interior of the inner nozzle tube is connected to the hollow cavity of the regulating cylinder through the liquid discharge port.

[0011] Furthermore, the denitration reducing agent spraying device also includes a drive motor, a connecting rod structure, and a rotary joint. The regulating cylinder feed pipe is connected to the feed pipeline via the rotary joint. The rotating end of the rotary joint is fixedly connected to the regulating cylinder feed pipe, and the fixed end of the rotary joint is fixedly connected to the feed pipeline. One end of the connecting rod structure is connected to the output shaft of the drive motor, and the other end is fixedly connected to the rotating end of the joint. The driving motor drives the connecting rod structure, thereby driving the rotating end of the joint and the flow regulating device to rotate.

[0012] Furthermore, the feed pipeline includes a main feed pipe and a branch feed pipe. The main feed pipe is arranged horizontally, one end of which is connected to the regulating cylinder feed pipe via the rotary joint. The branch feed pipe is arranged vertically and is connected to the main feed pipe. A storage cylinder is provided at the end of the branch feed pipe away from the main feed pipe. The storage cylinder includes a storage driver, a storage piston, and a cylinder housing. The cylinder housing is connected to the feed branch pipe. The storage piston is slidably arranged within the cylinder housing. The storage driver can drive the storage piston to reciprocate vertically within the cylinder housing. A supply shut-off valve is provided on the main feed pipe, located on the side of the storage cylinder away from the rotary joint.

[0013] Furthermore, an adjustment driver is provided at one end of the adjustment rod located at the sealing end cover, a housing of the adjustment driver is fixedly connected to the adjustment cylinder, and a working end of the adjustment driver is connected to the adjustment rod.

[0014] The working method of the above-mentioned high-efficiency denitrification reducing agent spraying device includes the following steps:

[0015] Step S1: The storage driver drives the storage piston to move downward to its proper position, the feed shut-off valve opens, and compressed air is introduced into the compressed air flow channel through the compressed air pipe. Finally, the reducing agent is ejected under the drive of the compressed air in the compressed air flow channel.

[0016] Step S2: According to actual needs, the regulating driver drives the throttling plug to move in and out of the liquid discharge port, so as to adjust the flow rate of the fluid sprayed from the nozzle.

[0017] Step S3: The driving motor drives the flow regulating device and the nozzle to rotate through the connecting rod structure to adjust the spraying angle.

[0018] Step S4: The feed shut-off valve is closed to terminate the spraying of the reducing agent.

[0019] Furthermore, in step S4, when the feed shut-off valve is turned off, the storage driver drives the storage piston to move upward, so that the reducing agent remaining in the feed pipeline, the rotary joint, and the flow regulating device can be sucked into the cylinder housing for temporary storage.

[0020] Furthermore, when the drain port is clogged, the regulating driver drives the throttling plug to be fully inserted into the drain port, thereby cleaning the drain port.

[0021] When the regulating cylinder, rotary joint or feed pipeline is blocked, the feed shut-off valve is shut off, and the storage driver drives the storage piston to move downward. The pressure of the storage piston is used to press the fluid stored in the cylinder housing into the regulating cylinder, rotary joint or feed pipeline to clean the corresponding components.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By using the regulating driver to drive the throttling plug to move back and forth, the reducing agent spraying flow rate of the nozzle can be adjusted to avoid the waste of reducing agent;

[0024] The driving motor and connecting rod structure cooperate with the rotary joint to adjust the spraying angle of the nozzle, thereby effectively improving the denitrification efficiency;

[0025] After the reducing agent spraying is completed, the storage driver drives the storage piston to move upward, and the reducing agent remaining in the feeding pipeline, the rotary joint, and the flow regulating device can be sucked into the cylinder housing for temporary storage, so as to prevent the reducing agent from remaining in the corresponding components after the spraying is completed and causing corrosion to the corresponding components.

[0026] The throttling plug can realize the cleaning of the discharge port; the storage oil cylinder can realize the cleaning of the regulating cylinder or the rotary joint or the feeding pipeline, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is one of the front views of a high-efficiency denitrification reducing agent spraying device of the present invention.

[0028] Figure 2 This is the second front view of a high-efficiency denitrification reducing agent spraying device of the present invention.

[0029] Figure 3 This is a right side view of a high-efficiency denitrification reducing agent spraying device of the present invention.

[0030] Figure 4 This is a right side sectional view of a high-efficiency denitrification reducing agent spraying device of the present invention.

[0031] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0032] Figure 6 It is a cross-sectional view of the flow regulating device in the present invention.

[0033] Figure 7 It is a cross-sectional view of the nozzle in the present invention.

[0034] Figure 8 It is a cross-sectional view of the feed pipeline and storage cylinder in the present invention.

[0035] Figure 9 It is a cross-sectional view of the rotary joint in the present invention.

[0036] In the figure: 1. Drive motor, 2. Connecting rod structure, 3. Adjustment driver, 4. Flow regulating device, 401. Adjustment rod, 402. Sealing end cover, 403. Adjustment cylinder, 404. Guide piston, 405. Throttle plug, 406. Liquid outlet cover, 407. Discharge port, 408. Guide sleeve, 409. Guide groove, 410. Adjustment cylinder feed pipe, 5. Nozzle, 501. Nozzle outer tube, 502. Nozzle inner tube, 503. Gun head air hole, 504. Compressed air pipe mouth, 505. Compressed air flow channel, 6. Rotary joint, 601. Joint rotating end, 602. Joint fixed end, 7. Feed pipeline, 701. Feed main pipe, 702. Feed branch pipe, 8. Feed shut-off valve, 9. Storage cylinder, 901. Storage driver, 902. Storage piston, 903. Cylinder housing. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] like Figure 3 As shown, a high-efficiency denitrification reducing agent spraying device includes a nozzle 5 and a feed pipe 7, wherein the feed pipe 7 is connected to the reducing agent storage tank. Figures 4 to 6As shown, the flow regulating device 4 is also included, which includes an adjusting rod 401 and an adjusting cylinder 403. The adjusting cylinder 403 is a cylindrical cylinder with a hollow cavity. The bottom end of the adjusting cylinder 403 is fixedly connected to a sealing end cap 402. The top end of the adjusting cylinder 403 is fixedly connected to a flow guide sleeve 408. The flow guide sleeve 408 is a cylinder with a cylindrical inner cavity. The hollow cavity of the adjusting cylinder 403 is connected to the cylindrical inner cavity of the flow guide sleeve 408. The adjusting rod 401 is movably inserted into the hollow cavity of the adjusting cylinder 403 and can reciprocate along the axial direction of the adjusting cylinder 403 within the hollow cavity of the adjusting cylinder 403. One end of the adjusting rod 401 passes through the sealing end cap 402 and is exposed outside the adjusting cylinder 403. A guide piston 404 is fixedly connected to the end of the adjusting rod 401 away from the sealing end cap 402. The guide piston 404 is cylindrical and has a clearance fit within the cylindrical inner cavity of the guide sleeve 408. Driven by the adjusting rod 401, the guide piston 404 can reciprocate along the axial direction of the cylindrical inner cavity of the guide sleeve 408. A spiral guide groove 409 is formed on the outer surface of the guide piston 404 and is coaxial with the guide piston 404.

[0039] like Figure 5 、 Figure 6 As shown, the end of the guide sleeve 408 away from the regulating cylinder 403 is fixedly connected to a liquid outlet cover plate 406, and a plurality of liquid discharge ports 407 are evenly distributed on the liquid outlet cover plate 406. A plurality of throttling plugs 405 are fixedly provided on the upper top surface of the guide piston 404. The throttling plugs 405 are arranged corresponding to the liquid discharge ports 407. The outer diameter of the throttling plugs 405 is slightly smaller than the inner diameter of the liquid discharge ports 407 to ensure that the throttling plugs 405 can be inserted into the liquid discharge ports 407.

[0040] like Figure 6As shown, a regulating cylinder feed pipe 410 is also fixedly provided on the regulating cylinder 403, and the regulating cylinder feed pipe 410 is connected to the hollow cavity of the regulating cylinder 403, and the other end of the regulating cylinder feed pipe 410 is connected to the supply pipeline 7. The side of the liquid outlet cover plate 406 away from the guide sleeve 408 is connected to the nozzle 5. The hollow cavity of the regulating cylinder 403 is connected to the nozzle 5 through the drain port 407. The reducing agent fluid flows from the regulating cylinder feed pipe 410 into the regulating cylinder 403 and the guide sleeve 408 in sequence. In the guide sleeve 408, the fluid forms a vortex along the guide groove 409, so that the fluid can be preliminarily atomized and discharged to the nozzle 5 through the drain port 407. The regulating rod 401 can reciprocate in the hollow cavity of the regulating cylinder 403 and drive the guide piston 404 to reciprocate, thereby driving the throttling plug 405 to move in and out of the discharge port 407 to adjust the fluid flow at the discharge port 407.

[0041] like Figure 7 As shown, in actual application, the nozzle 5 includes a nozzle outer tube 501 and a nozzle inner tube 502. The nozzle inner tube 502 is sleeved inside the nozzle outer tube 501. The outer diameter of the nozzle inner tube 502 is smaller than the inner diameter of the nozzle outer tube 501. A compressed air flow channel 505 is formed between the nozzle outer tube 501 and the nozzle inner tube 502. A compressed air nozzle 504 is formed on the nozzle outer tube 501. One end of the compressed air nozzle 504 is connected to the compressed air flow channel 505, and the other end of the compressed air nozzle 504 is connected to the compressed air storage tank through a hose. The bottom end of the nozzle inner tube 502 is fixedly connected to the liquid outlet cover plate 406, and a gun tip air hole 503 is provided at the top of the nozzle inner tube 502. The gun tip air hole 503 connects the compressed air flow channel 505 with the interior of the nozzle inner tube 502, and the interior of the nozzle inner tube 502 is connected with the hollow cavity of the regulating cylinder 403 through the drain port 407, that is, the compressed air pipe port 504 introduces compressed air into the compressed air flow channel 505, and the fluid in the regulating cylinder 403 flows into the interior of the nozzle inner tube 502 through the drain port 407. The compressed air in the compressed air flow channel 505 is mixed with the fluid in the nozzle inner tube 502 through the gun tip air hole 503 and ejected.

[0042] like Figures 1 to 3 as well as Figure 9As shown, in actual application, the denitration reducing agent spraying device also includes a driving motor 1, a connecting rod structure 2 and a rotary joint 6. The regulating cylinder feed pipe 410 is connected to the feed pipeline 7 through the rotary joint 6. The joint rotating end 601 of the rotary joint 6 is fixedly connected to the regulating cylinder feed pipe 410, and the joint fixed end 602 of the rotary joint 6 is fixedly connected to the feed pipeline 7. One end of the connecting rod structure 2 is connected to the output shaft of the driving motor 1, and the other end thereof is fixedly connected to the joint rotating end 601. The driving motor 1 drives the connecting rod structure 2, thereby driving the joint rotating end 601 and the flow regulating device 4 to rotate.

[0043] like Figure 8 As shown, in actual application, the feed pipeline 7 includes a feed main pipe 701 and a feed branch pipe 702. The feed main pipe 701 is arranged horizontally, and one end of the feed main pipe 701 is connected to the regulating cylinder feed pipe 410 through the rotary joint 6. The feed branch pipe 702 is arranged vertically and is connected to the feed main pipe 701. The end of the feed branch pipe 702 away from the feed main pipe 701 is provided with a storage cylinder 9. The storage cylinder 9 includes a storage driver 901, a storage piston 902 and a cylinder housing 903. The cylinder housing 903 is connected to the feed branch pipe 702. The storage piston 902 is slidably arranged in the cylinder housing 903. The storage driver 901 can drive the storage piston 902 to reciprocate in the vertical direction in the cylinder housing 903. When the accumulator piston 902 moves upward, it can draw the material in the feed pipe 701 into the cylinder housing 903. Similarly, when the accumulator piston 902 moves downward, it can deliver the material in the cylinder housing 903 into the feed pipe 701. The feed pipe 701 is provided with a feed shut-off valve 8, which is located on the side of the accumulator cylinder 9 away from the rotary joint 6.

[0044] like Figures 1 to 3 As shown, in actual application, the adjusting rod 401 is provided with an adjusting driver 3 at one end of the sealing end cap 402, the housing of the adjusting driver 3 is fixedly connected to the adjusting cylinder 403, and the working end of the adjusting driver 3 is connected to the adjusting rod 401. The adjusting driver 3 can drive the adjusting rod 401 to reciprocate along the axial direction of the adjusting cylinder 403 within the hollow cavity of the adjusting cylinder 403.

[0045] The working method of the above-mentioned high-efficiency denitrification reducing agent spraying device includes the following steps:

[0046] Step S1: The accumulator driver 901 moves the accumulator piston 902 downward into position, opening the feed shutoff valve 8 and introducing compressed air into the compressed air flow channel 505 through the compressed air nozzle 504. The reducing agent fluid then flows through the feed shutoff valve 8, the feed line 7, and the rotary joint 6 into the flow control device 4. From there, it flows into the nozzle inner tube 502. Ultimately, the reducing agent is ejected, driven by the compressed air within the compressed air flow channel 505.

[0047] Step S2: According to actual needs, the regulating driver 3 drives the throttling plug 405 to move in and out of the liquid discharge port 407, so as to adjust the flow rate of the fluid sprayed from the nozzle 5.

[0048] Step S3: The driving motor 1 drives the flow regulating device 4 and the nozzle 5 to rotate through the connecting rod structure 2 to adjust the spraying angle.

[0049] Step S4: The feed shut-off valve 8 is closed to terminate the spraying of the reducing agent.

[0050] In actual application, in step S4, when the feed shut-off valve 8 is turned off, the storage driver 901 drives the storage piston 902 to move upward, and the reducing agent remaining in the feed pipeline 7, the rotary joint 6, and the flow regulating device 4 can be sucked into the cylinder housing 903 for temporary storage, to prevent the reducing agent from remaining in the corresponding components after the spraying is completed, causing corrosion to the corresponding components.

[0051] In actual application, when the drain port 407 is clogged, the regulating driver 3 drives the throttling plug 405 to be fully inserted into the drain port 407 to clean the drain port 407 .

[0052] When the regulating cylinder 403 or the rotary joint 6 or the feed pipeline 7 is blocked, the feed shut-off valve 8 is closed, and the storage driver 901 drives the storage piston 902 to move downward. The pressure of the storage piston 902 is used to press the fluid stored in the cylinder housing 903 into the regulating cylinder 403 or the rotary joint 6 or the feed pipeline 7 to clean the corresponding components.

[0053] The basic principles, main features, and advantages of the present invention are shown and described above. Directional designators such as front, back, left, right, end, and front end are intended for illustrative purposes only and are not limiting. Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, and substitutions may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency denitrification reducing agent spraying device, comprising a nozzle (5) and a feed pipe (7), wherein the feed pipe (7) is connected to a reducing agent storage tank, and is characterized in that: The flow regulating device (4) further comprises a flow regulating device (4), the flow regulating device (4) comprising an regulating rod (401) and a regulating cylinder (403), the regulating cylinder (403) being a cylindrical cylinder with a hollow cavity, the bottom end of the regulating cylinder (403) being fixedly connected to a sealing end cap (402), the top end of the regulating cylinder (403) being fixedly connected to a flow guide sleeve (408), the flow guide sleeve (408) being a cylinder with a cylindrical inner cavity; the regulating rod (401) being movably arranged in the hollow cavity of the regulating cylinder (403); one end of the regulating rod (401) passing through the sealing end cap (402) and exposed at the bottom end. On the outside of the regulating cylinder (403), one end of the regulating rod (401) away from the sealing end cover (402) is fixedly connected to a flow guide piston (404), the flow guide piston (404) is cylindrical and is clearance-matched with the cylindrical inner cavity of the flow guide sleeve (408), and the flow guide piston (404) can reciprocate along the axial direction of the cylindrical inner cavity of the flow guide sleeve (408) under the drive of the regulating rod (401); a spiral flow guide groove (409) is provided on the outer surface of the flow guide piston (404), and the flow guide groove (409) is coaxially arranged with the flow guide piston (404); One end of the guide sleeve (408) away from the regulating cylinder (403) is fixedly connected to a liquid outlet cover plate (406), and a plurality of liquid discharge ports (407) are evenly provided on the liquid outlet cover plate (406); a plurality of throttling plugs (405) are fixedly provided on the upper top surface of the guide piston (404), and the throttling plugs (405) are arranged corresponding to the liquid discharge ports (407); A regulating cylinder feed pipe (410) is also fixedly provided on the regulating cylinder (403), the regulating cylinder feed pipe (410) is communicated with the hollow cavity of the regulating cylinder (403), and the other end of the regulating cylinder feed pipe (410) is communicated with the supply pipeline (7); the side of the liquid outlet cover plate (406) away from the guide sleeve (408) is connected to the nozzle (5).

2. The high-efficiency denitration reducing agent spraying device according to claim 1, characterized in that: The nozzle (5) comprises a nozzle outer tube (501) and a nozzle inner tube (502), wherein the nozzle inner tube (502) is sleeved inside the nozzle outer tube (501), and a compressed air flow channel (505) is formed between the nozzle outer tube (501) and the nozzle inner tube (502); a compressed air pipe port (504) is provided on the nozzle outer tube (501), and one end of the compressed air pipe port (504) is communicated with the compressed air flow channel (505); the bottom end of the nozzle inner tube (502) is fixedly connected to the liquid outlet cover plate (406), and a gun head air hole (503) is provided at the top end of the nozzle inner tube (502), and the gun head air hole (503) communicates the compressed air flow channel (505) with the interior of the nozzle inner tube (502), and the interior of the nozzle inner tube (502) is communicated with the hollow cavity of the regulating cylinder (403) through the liquid discharge port (407).

3. The high-efficiency denitration reducing agent spraying device according to claim 2, characterized in that: The denitration reducing agent spraying device further comprises a driving motor (1), a connecting rod structure (2) and a rotary joint (6); the regulating cylinder feed pipe (410) is connected to the feed pipe (7) via the rotary joint (6); the joint rotating end (601) of the rotary joint (6) is fixedly connected to the regulating cylinder feed pipe (410); and the joint fixed end (602) of the rotary joint (6) is fixedly connected to the feed pipe (7); one end of the connecting rod structure (2) is connected to the output shaft of the driving motor (1), and the other end thereof is fixedly connected to the joint rotating end (601); the driving motor (1) is used to drive the connecting rod structure (2), thereby driving the joint rotating end (601) and the flow regulating device (4) to rotate.

4. The high-efficiency denitration reducing agent spraying device according to claim 3, characterized in that: The feeding pipeline (7) includes a feeding main pipe (701) and a feeding branch pipe (702). The feeding main pipe (701) is arranged horizontally. One end of the feeding main pipe (701) is connected to the regulating cylinder feeding pipe (410) through the rotating joint (6). The feeding branch pipe (702) is arranged vertically and is connected to the feeding main pipe (701). The feeding branch pipe (702) is provided with a storage cylinder (9) at one end away from the feeding main pipe (701). The storage cylinder (9) includes a storage driver (901), a storage cylinder (902), and a storage cylinder (903). A piston (902) and a cylinder housing (903), wherein the cylinder housing (903) is connected to the feed branch pipe (702), the storage piston (902) is slidably arranged in the cylinder housing (903), and the storage driver (901) can drive the storage piston (902) to reciprocate in the vertical direction in the cylinder housing (903), and a feed shut-off valve (8) is provided on the feed main pipe (701), and the feed shut-off valve (8) is located on the side of the storage oil cylinder (9) away from the rotary joint (6).

5. The high-efficiency denitration reducing agent spraying device according to claim 4, characterized in that: The adjusting rod (401) is provided with an adjusting driver (3) at one end of the sealing end cover (402), the housing of the adjusting driver (3) is fixedly connected to the adjusting cylinder (403), and the working end of the adjusting driver (3) is connected to the adjusting rod (401).

6. A method for operating the high-efficiency denitration reducing agent spraying device according to claim 5, characterized in that: The following steps are involved: Step S1: The storage driver (901) drives the storage piston (902) to move downward to its position, the feed shut-off valve (8) is opened, and compressed air is introduced into the compressed air flow channel (505) through the compressed air pipe port (504); finally, the reducing agent is ejected under the drive of the compressed air in the compressed air flow channel (505); Step S2: According to actual needs, the regulating driver (3) drives the throttling plug (405) to move in and out of the liquid discharge port (407), thereby adjusting the flow rate of the fluid ejected from the nozzle (5); Step S3: The driving motor (1) drives the flow regulating device (4) and the nozzle (5) to rotate via the connecting rod structure (2) to adjust the spraying angle; Step S4: The feed shut-off valve (8) is closed to terminate the spraying of the reducing agent.

7. The operating method of the high-efficiency denitration reducing agent spraying device according to claim 6, characterized in that: In step S4, when the feed shut-off valve (8) is turned off, the storage driver (901) drives the storage piston (902) to move upward, so that the reducing agent remaining in the feed pipeline (7), the rotary joint (6), and the flow regulating device (4) can be sucked into the cylinder housing (903) for temporary storage.

8. The operating method of the high-efficiency denitration reducing agent spraying device according to claim 6, characterized in that: When the drain port (407) is clogged, the regulating driver (3) drives the throttling plug (405) to be completely inserted into the drain port (407), thereby cleaning the drain port (407); When the regulating cylinder (403) or the rotary joint (6) or the feed pipeline (7) is blocked, the feed shut-off valve (8) is shut off, and the storage driver (901) drives the storage piston (902) to move downward. The pressure of the storage piston (902) is used to press the fluid stored in the cylinder housing (903) into the regulating cylinder (403) or the rotary joint (6) or the feed pipeline (7), thereby cleaning the corresponding components.

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