Flue gas denitration device

Abstract

The application discloses a flue gas denitration device, which comprises a supporting base, a flue gas pretreatment mechanism is arranged on the top of the supporting base, a flue gas denitration mechanism is arranged on the right side of the flue gas pretreatment mechanism on the top of the supporting base, a denitration agent storage mechanism is arranged on the right side of the flue gas denitration mechanism on the top of the supporting base, the flue gas pretreatment mechanism comprises a supporting table, the supporting table is fixedly installed on the top of the supporting base, and a fixed air inlet cylinder is fixedly installed on the inner wall of the supporting table. Through the design of the flue gas pretreatment mechanism, the movable filter cartridge can be automatically disconnected from the fixed air inlet cylinder, then the annular filter piece can be cleaned by reverse inflation with the help of an external air source, meanwhile, the brush is driven to rotate by the power of the air source, the inner wall of the annular filter piece is brushed and cleaned, the function of automatically and sufficiently cleaning the annular filter piece is realized, the automation degree of the structure is increased, and the cleaning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas denitration technology, in particular to a flue gas denitration device. BACKGROUND

[0002] Flue gas denitration technology refers to the technology of removing nitrogen oxides from flue gas by using appropriate equipment, materials and processes. Common flue gas denitration technologies include selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), absorbent method, oxidant method and catalytic oxidation method, etc. The main principle of flue gas denitration technology is to add appropriate reducing agent or catalyst in the combustion process or flue gas treatment system to reduce NOx to nitrogen and water, so as to achieve the purpose of reducing NOx emission. SCR technology injects ammonia or urea into flue gas, which reacts with NOx under the action of catalyst to generate harmless nitrogen and water vapor; SNCR technology directly sprays ammonia or urea into high-temperature flue gas to perform non-selective catalytic reduction reaction with NOx. Compared with other denitration technologies, SCR technology has the characteristics of high efficiency, reliability and stability, and can perform denitration in a wide temperature range. Under ideal conditions, it can achieve a removal efficiency of more than 90%, and the effect is stable and not affected by changes in flue gas temperature and composition. Therefore, SCR technology is particularly suitable for occasions that need to meet strict emission standards, such as thermal power plants, etc.

[0003] Before the flue gas denitration device performs denitration, the flue gas needs to be filtered to remove large particulate impurities in the flue gas, so as to avoid the problem that the impurities easily cause internal blockage of the subsequent components. Therefore, the filter structure needs to be frequently disassembled and cleaned during maintenance. At present, manual disassembly and cleaning are usually used, which is low in efficiency and consumes a lot of manpower. Therefore, we propose a flue gas denitration device. SUMMARY

[0004] The present application aims to provide a flue gas denitration device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a flue gas denitration device, comprising a support base, a flue gas pretreatment mechanism is arranged on the top of the support base, a flue gas denitration mechanism is arranged on the right side of the flue gas pretreatment mechanism on the top of the support base, and a denitration agent storage mechanism is arranged on the right side of the flue gas denitration mechanism on the top of the support base.

[0006] The flue gas pretreatment mechanism includes a support table, the support table is fixedly installed on the top of the support base, a fixed air inlet cylinder is fixedly installed on the inner wall of the support table, a rubber sealing ring is fixedly connected to the top of the fixed air inlet cylinder, a movable filter cylinder is movably connected to the top of the rubber sealing ring, a support ring is fixedly installed on the inner wall of the movable filter cylinder, an annular filter piece is fixedly connected to the top of the support ring, a top plate is fixedly installed on the top of the annular filter piece, a rotating rod is rotatably connected to the top of the top plate, blades are fixedly installed on the outer wall of the rotating rod, a multi-pass square tube is fixedly connected to the top of the movable filter cylinder, a second electromagnetic valve is fixedly connected to the right side of the multi-pass square tube, and a second hose is fixedly connected to the right of the second electromagnetic valve.

[0007] Preferably, a rotating piece is rotatably connected to the bottom of the top plate, the top of the rotating piece is fixedly connected to the bottom of the rotating rod, a connecting bent rod is fixedly installed on the bottom of the top plate, a vertical strip is fixedly connected to the end of the connecting bent rod away from the rotating piece, and a brush is fixedly connected to the side of the vertical strip close to the inner wall of the annular filter piece.

[0008] Preferably, a support rod above the rotating rod is fixedly installed on the inner wall of the movable filter cylinder, a middle block is fixedly connected to the end of the support rod away from the inner wall of the movable filter cylinder, a sliding fin plate is slidably connected to the inner wall of the middle block, and an elastic piece is fixedly installed on the bottom of the middle block.

[0009] Preferably, a fitting block is fixedly installed on the bottom of the sliding fin plate, the top of the fitting block is fixedly connected to the bottom of the elastic piece, the bottom of the fitting block is movably connected to the top of the rotating rod, a strip-shaped groove is formed in the side of the fitting block close to the bottom, and an annular groove is formed in the bottom of the fitting block.

[0010] Preferably, an L-shaped plate is fixedly installed on the front of the support table, a gas cylinder is fixedly installed on the front of the L-shaped plate, a limiting rod is slidably connected to the inner wall of the L-shaped plate, the output shaft of the gas cylinder extends to the back of the L-shaped plate and is fixedly connected to the front of the movable filter cylinder, and the end of the limiting rod is fixedly connected to the front of the movable filter cylinder.

[0011] Preferably, a first electromagnetic valve is fixedly connected to the top of the multi-pass square tube, a first hose is fixedly connected to the top of the first electromagnetic valve, and the end of the first hose away from the first electromagnetic valve is fixedly connected to an external gas source.

[0012] Preferably, the flue gas denitration mechanism includes a lifting frame, the lifting frame is fixedly installed on the top of the support base, a denitration bin is fixedly installed on the inner wall of the lifting frame, the end of the second hose away from the second electromagnetic valve is fixedly connected to the left side of the denitration bin, an exhaust pipe opening is fixedly connected to the top of the denitration bin, and a blowdown valve is fixedly connected to the bottom of the denitration bin.

[0013] Preferably, the inner wall of the denitration bin is fixedly installed with an inner partition plate, the bottom of the inner partition plate is fixedly connected with a conical cylinder, the top center of the inner partition plate is fixedly installed with a support, the outer wall of the support is fixedly installed with an annular pipeline, the bottom of the annular pipeline is fixedly connected with an atomizing nozzle, the right side of the support is fixedly connected with a branch pipe, and the right side of the branch pipe extends to the side of the denitration bin and is fixedly connected with a strip pipe.

[0014] Preferably, the denitration agent storage mechanism comprises a support leg fixedly installed on the top of the support base, a liquid storage tank fixedly installed on the top of the support leg, a liquid filling pipe fixedly connected to the top of the liquid storage tank, a drive motor fixedly installed on the top of the liquid storage tank, an output shaft of the drive motor extending into the inner cavity of the liquid storage tank and fixedly connected with a rotating shaft, a stirring paddle fixedly installed on the outer wall of the rotating shaft, a suction pump fixedly installed on the side of the liquid storage tank, an output pipe of the suction pump fixedly connected to the outer wall of the strip pipe, an annular pipe fixedly connected to the input end of the suction pump, and a branch suction pipe fixedly connected to the inner wall of the annular pipe.

[0015] Preferably, one end of the branch suction pipe away from the annular pipe extends into the inner cavity of the liquid storage tank and is fixedly connected with a hollow part, a through groove is formed in the inclined surface of the hollow part, and a filter screen is fixedly installed on the inner wall of the through groove.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] Through the overall design of the flue gas pretreatment mechanism, the movable filter cartridge can be automatically disconnected from the fixed air inlet cylinder, and then the annular filter part can be cleaned by reverse inflation with an external air source. At the same time, the rotating brush is driven by the power of the air source to brush and clean the inner wall of the annular filter part, realizing the function of automatically cleaning the annular filter part. The degree of automation of the structure is increased, and the cleaning efficiency is improved. Through the overall design of the denitration agent storage mechanism, the denitration agent can be stored and continuously mixed, avoiding the problem that the denitration agent is prone to precipitation during storage, thereby affecting the effect of flue gas denitration. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the separation structure of the fixed air inlet cylinder and the movable filter cartridge of the present application;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the movable filter cartridge of the present application;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the movable filter cartridge of the present application; Figure 3Enlarged structural schematic view of the middle A;

[0022] Figure 5 Schematic view of the bottom structure of the top plate of the application;

[0023] Figure 6 Schematic view of the bottom structure of the top plate of the application;

[0024] Figure 7 Schematic view of the cross-sectional structure of the denitration bin of the application;

[0025] Figure 8 Schematic view of the bottom structure of the annular pipeline of the application;

[0026] Figure 9 Schematic view of the cross-sectional structure of the liquid storage tank of the application;

[0027] Figure 10 Schematic view of the middle B; Figure 9 Enlarged structural schematic view of the middle B.

[0028] In the figure: 1, support base; 2, flue gas pretreatment mechanism; 21, support table; 22, fixed air inlet cylinder; 23, movable filter cylinder; 231, support ring; 232, annular filter piece; 233, top plate; 2331, rotating piece; 2332, connecting bent rod; 2333, vertical strip; 2334, brush; 234, rotating rod; 235, blade; 236, support rod; 237, middle block; 238, elastic piece; 239, sliding fin plate; 2391, fitting block; 2392, strip-shaped groove; 2393, annular groove; 24, rubber sealing ring; 25, multi-pass square tube; 251, No. 1 electromagnetic valve; 252, No. 1 hose; 26, No. 2 electromagnetic valve; 261, No. 2 hose; 27, L-shaped plate; 28, air cylinder; 29, limiting rod; 3, flue gas denitration mechanism; 31, lifting frame; 32, denitration bin; 33, exhaust pipe opening; 34, inner partition plate; 35, conical cylinder; 36, branch pipe; 37, strip pipe; 38, support; 381, annular pipeline; 382, atomizing nozzle; 4, denitration agent storage mechanism; 41, support leg; 42, liquid storage tank; 43, liquid filling pipe opening; 44, driving motor; 45, rotating shaft; 46, stirring paddle; 47, branch extraction pipe; 471, hollow piece; 472, filter screen; 48, ring pipe; 49, extraction pump. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0030] Please refer to Figures 1-10 The application provides a technical scheme: a flue gas denitration device, comprising a supporting base 1, the top of the supporting base 1 is provided with a flue gas pretreatment mechanism 2, the top of the supporting base 1 is provided with a flue gas denitration mechanism 3 located at the right side of the flue gas pretreatment mechanism 2, and the top of the supporting base 1 is provided with a denitration agent storage mechanism 4 located at the right side of the flue gas denitration mechanism 3.

[0031] In the preferred technical scheme of the present embodiment, the flue gas pretreatment mechanism 2 comprises a support table 21 fixedly installed on the top of the support base 1, a fixed air inlet cylinder 22 fixedly installed on the inner wall of the support table 21, a rubber sealing ring 24 fixedly connected to the top of the fixed air inlet cylinder 22, a movable filter cylinder 23 movably connected to the top of the rubber sealing ring 24, a support ring 231 fixedly installed on the inner wall of the movable filter cylinder 23, an annular filter element 232 fixedly connected to the top of the support ring 231, a top plate 233 fixedly installed on the top of the annular filter element 232, a rotating rod 234 rotatably connected to the top of the top plate 233, a blade 235 fixedly installed on the outer wall of the rotating rod 234, a multi-pass square tube 25 fixedly connected to the top of the movable filter cylinder 23, a second electromagnetic valve 26 fixedly connected to the right side of the multi-pass square tube 25, a second hose 261 fixedly connected to the right of the second electromagnetic valve 26, a rotating piece 2331 rotatably connected to the bottom of the top plate 233, the top of the rotating piece 2331 fixedly connected to the bottom of the rotating rod 234, a connecting bent rod 2332 fixedly installed on the bottom of the top plate 233, a vertical strip 2333 fixedly connected to the end of the connecting bent rod 2332 away from the rotating piece 2331, a brush 2334 fixedly connected to the side of the vertical strip 2333 close to the inner wall of the annular filter element 232, an L-shaped plate 27 fixedly installed on the front of the support table 21, an air cylinder 28 fixedly installed on the front of the L-shaped plate 27, a limiting rod 29 slidingly connected to the inner wall of the L-shaped plate 27, the output shaft of the air cylinder 28 extending to the back of the L-shaped plate 27 and fixedly connected to the front of the movable filter cylinder 23, the end of the limiting rod 29 fixedly connected to the front of the movable filter cylinder 23, a first electromagnetic valve 251 fixedly connected to the top of the multi-pass square tube 25, a first hose 252 fixedly connected to the top of the first electromagnetic valve 251, the end of the first hose 252 away from the first electromagnetic valve 251 fixedly connected to an external gas source, the waste gas outlet pipe is connected to the bottom of the fixed air inlet cylinder 22 in advance, the first electromagnetic valve 251 is closed and the second electromagnetic valve 26 is opened, so that the waste gas flows through the inner cavity of the movable filter cylinder 23, the annular filter element 232 filters the waste gas, and the filtered waste gas enters the denitration bin 32 for denitration work, when cleaning the filter surface of the annular filter element 232, the air cylinder 28 is controlled to extend, so that the movable filter cylinder 23 moves backward and is disconnected from the fixed air inlet cylinder 22, then the second electromagnetic valve 26 is closed and the first electromagnetic valve 251 is opened, the external gas source flows into the movable filter cylinder 23, the annular filter element 232 is cleaned in reverse, the flow of gas can drive the blade 235 to rotate, the transmission of the rotating rod 234 and the top plate 233 drives the rotating piece 2331 to rotate, and the rotating brush 2334 brushes the inner wall of the annular filter element 232, improving the sufficiency of self-cleaning, and the design of the rubber sealing ring 24 can achieve movable sealing treatment of the connection between the movable filter cylinder 23 and the fixed air inlet cylinder 22.

[0032] In the preferable technical scheme in the embodiment, the inner wall of the movable filter cartridge 23 is fixedly installed with a support rod 236 above the rotating rod 234, the end of the support rod 236 away from the inner wall of the movable filter cartridge 23 is fixedly connected with a middle block 237, the inner wall of the middle block 237 is slidably connected with a sliding fin 239, the bottom of the middle block 237 is fixedly installed with an elastic element 238, the bottom of the sliding fin 239 is fixedly installed with a abutting block 2391, the top of the abutting block 2391 is fixedly connected with the bottom of the elastic element 238, the bottom of the abutting block 2391 is movably connected with the top of the rotating rod 234, the side of the abutting block 2391 close to the bottom is provided with a strip-shaped slot 2392, and the bottom of the abutting block 2391 is provided with an annular slot 2393. When filtering through the annular filter element 232, the abutting block 2391 is subjected to downward pressure by the initial elastic force of the elastic element 238, and the position of the blade 235 is locked by the static friction force between the abutting block 2391 and the top of the rotating rod 234. When the annular filter element 232 is subjected to reverse flushing, the blade 235 and the rotating rod 234 are simultaneously subjected to downward pressure by the downward flowing gas. The rotating rod 234 is an existing elastic rod that can vertically stretch and retract. Thus, the downward pressure can make the top of the rotating rod 234 shrink by a distance downward, release the static friction force between the abutting block 2391 and the rotating rod 234, and make the blade 235 rotate smoothly.

[0033] In the preferable technical scheme in the embodiment, the flue gas denitration mechanism 3 comprises a lifting frame 31 fixedly installed on the top of the support base 1, a denitration bin 32 fixedly installed on the inner wall of the lifting frame 31, the left side of the denitration bin 32 is fixedly connected with the end of the No. 2 hose 261 away from the No. 2 electromagnetic valve 26, the top of the denitration bin 32 is fixedly connected with an exhaust pipe 33, the bottom of the denitration bin 32 is fixedly connected with a blowdown valve, the inner wall of the denitration bin 32 is fixedly installed with an inner partition plate 34, the bottom of the inner partition plate 34 is fixedly connected with a conical cylinder 35, the center of the top of the inner partition plate 34 is fixedly installed with a support 38, the outer wall of the support 38 is fixedly installed with an annular pipeline 381, the bottom of the annular pipeline 381 is fixedly connected with an atomizing nozzle 382, the right side of the support 38 is fixedly connected with a branch pipe 36, the right side of the branch pipe 36 extends to the side of the denitration bin 32 and is fixedly connected with a strip pipe 37. After the extraction pump 49 operates, the denitration agent can be transported into the inner cavity of the strip pipe 37, then passes through the branch pipe 36 into the annular pipeline 381, and is then output from the bottom of the atomizing nozzle 382 in a conical range. Through the guidance of the conical cylinder 35, the flue gas can move through the conical range, thereby improving the contact effect of the denitration agent and the flue gas.

[0034] In the preferred technical scheme of the embodiment, the denitration agent storage mechanism 4 comprises a support leg 41 fixedly installed on the top of the support base 1, a liquid storage tank 42 fixedly installed on the top of the support leg 41, a liquid filling pipe 43 fixedly connected to the top of the liquid storage tank 42, a drive motor 44 fixedly installed on the top of the liquid storage tank 42, an output shaft of the drive motor 44 extending into the inner cavity of the liquid storage tank 42 and fixedly connected with a rotating shaft 45, a stirring paddle 46 fixedly installed on the outer wall of the rotating shaft 45, a suction pump 49 fixedly installed on the side of the liquid storage tank 42, an output pipe of the suction pump 49 fixedly connected to the outer wall of the strip pipe 37, a ring pipe 48 fixedly connected to the input end of the suction pump 49, a branch suction pipe 47 fixedly connected to the inner wall of the ring pipe 48, the branch suction pipe 47 extending into the inner cavity of the liquid storage tank 42 at the end away from the ring pipe 48 and fixedly connected with a hollow part 471, a through groove being formed in the inclined surface of the hollow part 471, and a filter screen 472 fixedly installed on the inner wall of the through groove. The denitration agent can be added into the inner cavity of the liquid storage tank 42 from the liquid filling pipe 43, the drive motor 44 is controlled to work to drive the rotating shaft 45 to rotate the stirring paddle 46 to mix the denitration agent, thereby avoiding the problem of easy precipitation of the denitration agent during storage, ensuring the effect of flue gas denitration, and through the position design of the ring pipe 48 and the branch suction pipe 47, the denitration agent can be sucked from different positions in the inner cavity of the liquid storage tank 42 when the suction pump 49 is running, thereby increasing the uniformity of denitration agent suction, and through the design of the filter screen 472, the denitration agent sucked by the suction pump 49 can be filtered, thereby avoiding the problem of easy blockage of the internal components caused by precipitation.

[0035] Working principle: in use, the denitration agent is added into the inner cavity of the liquid storage tank 42 from the liquid filling pipe 43, the waste gas output pipe is connected to the bottom of the fixed air inlet cylinder 22 in advance, the first electromagnetic valve 251 is closed and the second electromagnetic valve 26 is opened, the waste gas flows through the inner cavity of the movable filter cylinder 23, the waste gas is filtered by the annular filter part 232, and then enters the denitration bin 32, the suction pump 49 is controlled to run to suck the denitration agent in the liquid storage tank 42 and deliver it into the strip pipe 37, the denitration agent is then output from the bottom of the atomizing nozzle 382 to fully contact with the flue gas, thereby achieving the function of flue gas denitration, and if it is necessary to clean the filter surface of the annular filter part 232, the cylinder 28 is controlled to extend to move the movable filter cylinder 23 backward to disconnect with the fixed air inlet cylinder 22, then the second electromagnetic valve 26 is closed and the first electromagnetic valve 251 is opened, and the external air source is then introduced into the movable filter cylinder 23 to clean the annular filter part 232 in reverse.

[0036] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0037] While the embodiments of the application have been shown and described herein, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made to the embodiments without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A flue gas denitration device comprising a support base (1), characterized in that: The top of the support base (1) is provided with a flue gas pretreatment mechanism (2), the top of the support base (1) is provided with a flue gas denitration mechanism (3) located at the right side of the flue gas pretreatment mechanism (2), and the top of the support base (1) is provided with a denitration agent storage mechanism (4) located at the right side of the flue gas denitration mechanism (3); The flue gas pretreatment mechanism (2) comprises a support table (21) fixedly installed on the top of the support base (1), a fixed air inlet cylinder (22) fixedly installed on the inner wall of the support table (21), a rubber sealing ring (24) fixedly connected to the top of the fixed air inlet cylinder (22), a movable filter cylinder (23) movably connected to the top of the rubber sealing ring (24), a support ring (231) fixedly installed on the inner wall of the movable filter cylinder (23), an annular filter element (232) fixedly connected to the top of the support ring (231), a top plate (233) fixedly installed on the top of the annular filter element (232), a rotating rod (234) rotatably connected to the top of the top plate (233), a blade (235) fixedly installed on the outer wall of the rotating rod (234), a multi-way square tube (25) fixedly connected to the top of the movable filter cylinder (23), a No. 2 electromagnetic valve (26) fixedly connected to the right side of the multi-way square tube (25), and a No. 2 hose (261) fixedly connected to the right of the No. 2 electromagnetic valve (26). One end of the No. 2 hose (261) away from the No. 2 electromagnetic valve (26) is fixedly connected to the left side of the denitration bin (32), a No. 1 electromagnetic valve (251) is fixedly connected to the top of the multi-way square tube (25), a No. 1 hose (252) is fixedly connected to the top of the No. 1 electromagnetic valve (251), one end of the No. 1 hose (252) away from the No. 1 electromagnetic valve (251) is fixedly connected to an external gas source, and the annular filter element (232) is reversely aerated and cleaned, the flow of gas can drive the blade (235) to rotate, thereby driving the brush (2334) to rotate and clean the inner wall of the annular filter element (232), a support rod (236) is fixedly installed above the rotating rod (234) on the inner wall of the movable filter cylinder (23), a middle block (237) is fixedly connected to one end of the support rod (236) away from the inner wall of the movable filter cylinder (23), a sliding fin plate (239) is slidably connected to the inner wall of the middle block (237), and an elastic element (238) is fixedly installed on the bottom of the middle block (237); a matching block (2391) is fixedly installed on the bottom of the sliding fin plate (239), the top of the matching block (2391) is fixedly connected to the bottom of the elastic element (238), the bottom of the matching block (2391) is movably connected to the top of the rotating rod (234), a strip-shaped groove (2392) is formed in the side face close to the bottom of the matching block (2391), and an annular groove (2393) is formed in the bottom of the matching block (2391). When filtering through the annular filter element (232), the initial elastic force of the elastic element (238) can exert downward pressure on the abutting block (2391), and the static friction force between the abutting block (2391) and the top of the rotating rod (234) can complete the locking of the position of the blade (235). When the annular filter element (232) is reversely washed, the downward flowing gas can simultaneously exert downward pressure on the blade (235) and the rotating rod (234), so that the top of the rotating rod (234) shrinks by a distance, the static friction force between the abutting block (2391) and the rotating rod (234) is released, and the blade (235) rotates smoothly.

2. The flue gas denitration device according to claim 1, characterized in that: The bottom of the top plate (233) is rotatably connected with a rotating piece (2331), the top of the rotating piece (2331) is fixedly connected with the bottom of the rotating rod (234), the bottom of the top plate (233) is fixedly installed with a connecting bent rod (2332), one end of the connecting bent rod (2332) away from the rotating piece (2331) is fixedly connected with a vertical strip (2333), and the vertical strip (2333) is fixedly connected with a brush (2334) on the side close to the inner wall of the annular filter element (232).

3. The flue gas denitration device according to claim 1, characterized in that: The front surface of the support table (21) is fixedly installed with an L-shaped plate (27), the front surface of the L-shaped plate (27) is fixedly installed with an air cylinder (28), the inner wall of the L-shaped plate (27) is slidably connected with a limiting rod (29), the output shaft of the air cylinder (28) extends to the back surface of the L-shaped plate (27) and is fixedly connected with the front surface of the movable filter drum (23), and the end of the limiting rod (29) is fixedly connected with the front surface of the movable filter drum (23).

4. The flue gas denitration device according to claim 1, characterized in that: The flue gas denitration mechanism (3) comprises a lifting frame (31) fixedly installed on the top of the support base (1), a denitration bin (32) fixedly installed on the inner wall of the lifting frame (31), and a second hose (261) fixedly connected with the left side of the denitration bin (32) at one end away from the second electromagnetic valve (26).

5. The flue gas denitration device according to claim 4, characterized in that: The inner wall of the denitration bin (32) is fixedly installed with an inner partition plate (34), the bottom of the inner partition plate (34) is fixedly connected with a conical cylinder (35), the top of the inner partition plate (34) is fixedly installed with a bracket (38), the outer wall of the bracket (38) is fixedly installed with an annular pipeline (381), the bottom of the annular pipeline (381) is fixedly connected with an atomizing nozzle (382), the right side of the bracket (38) is fixedly connected with a branch pipe (36), and the right side of the branch pipe (36) extends to the side of the denitration bin (32) and is fixedly connected with a strip pipe (37).

6. The flue gas denitration device according to claim 5, characterized in that: The denitration agent storage mechanism (4) includes a support leg (41) fixedly installed on the top of the support base (1), the top of the support leg (41) is fixedly installed with a liquid storage tank (42), the top of the liquid storage tank (42) is fixedly connected with a liquid adding pipe (43), the top of the liquid storage tank (42) is fixedly installed with a driving motor (44), the output shaft of the driving motor (44) extends into the inner cavity of the liquid storage tank (42) and is fixedly connected with a rotating shaft (45), the outer wall of the rotating shaft (45) is fixedly installed with a stirring paddle (46), the side of the liquid storage tank (42) is fixedly installed with a pumping pump (49), the output pipe of the pumping pump (49) is fixedly connected to the outer wall of the strip pipe (37), the input end of the pumping pump (49) is fixedly connected with a ring pipe (48), and the inner wall of the ring pipe (48) is fixedly connected with a branch pumping pipe (47).

7. The flue gas denitration device according to claim 6, characterized in that: The end of the branch pumping pipe (47) away from the ring pipe (48) extends into the inner cavity of the liquid storage tank (42) and is fixedly connected with a hollow part (471), the inclined surface of the hollow part (471) is provided with a through groove, and the inner wall of the through groove is fixedly installed with a filter screen (472).

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