Flue gas dust removal equipment and method with desulfurization and denitrification functions

Abstract

The invention discloses flue gas dust removal equipment and method with desulfurization and denitrification functions, and relates to the technical field of flue gas removal equipment.The equipment comprises a treatment vertical barrel, a plurality of supporting legs are installed at the lower end of the treatment vertical barrel, universal wheels used for moving are arranged at the lower ends of the supporting legs, and a desulfurization cavity is formed in the lower end of the treatment vertical barrel; the upper end of the treatment vertical barrel is provided with a denitration cavity, the lower end of the denitration cavity and the lower end of the desulfurization cavity are each provided with an emptying channel used for discharging waste, and the port of each emptying channel is provided with a sealing plug; by arranging the liquid filter plate capable of rotating intermittently, filtered impurities can be continuously cleaned to the side, close to the slag removal door, of the partition plate during use, meanwhile, a shaking assembly is matched, the impurities on the liquid filter plate are completely shaken off, the automatic slag removal function can be achieved, workers do not need to frequently clean the liquid filter plate, and the working efficiency is improved. And the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of smoke removal equipment, and in particular to a smoke dust removal equipment and method with desulfurization and denitrification functions. Background Art

[0002] With the increase in the amount of solid waste burned and treated, such as medical waste, kitchen waste, and biomass fuels, the sulfides and nitrides contained in the flue gas will cause serious secondary pollution to the environment if they are discharged directly into the atmosphere without treatment.

[0003] The prior art CN112705032B proposes a flue gas desulfurization and denitrification device with a rapid purification function mechanism, including a flue gas treatment tube, the inner wall of the flue gas treatment tube is provided with a carrying ring, the top surface of the carrying ring is provided with a sealing plate, the surface of the sealing plate is plugged with a first gas valve pipe, a baffle is provided above the sealing plate, an infusion tube is plugged on the gas collecting frame, the sprayed liquid is transported downward through the infusion tube, the liquid flows along the baffle to the carrying ring and the sealing plate, the alkaline spray liquid here undergoes a desulfurization reaction, and the recycling of the alkaline spray liquid is realized.

[0004] Although the above-mentioned equipment can recycle the spray liquid while desulfurizing and denitrifying the flue gas, the spray liquid will carry a large amount of impurities in the smoke during the downward spraying process. The large amount of impurities will cause the nozzle to be clogged when it is reused later. To address the above problems, we provide a flue gas dust removal equipment and method with desulfurization and denitrification to solve the above-mentioned problem. Summary of the invention

[0005] The object of the present invention is to provide a flue gas dust removal device and method with desulfurization and denitrification functions, so as to solve the problem in the prior art that the spray liquid recovered contains a large amount of impurities.

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

[0007] The flue gas dust removal equipment with desulfurization and denitrification comprises a processing vertical barrel, a plurality of supporting legs are installed at the lower end of the processing vertical barrel, and the lower ends of the supporting legs are provided with universal wheels for movement, a desulfurization chamber is provided at the lower end of the processing vertical barrel, and a denitrification chamber is provided at the upper end of the processing vertical barrel. The lower ends of the denitrification chamber and the desulfurization chamber are both provided with emptying channels for discharging waste, and the ports of the emptying channels are provided with sealing plugs;

[0008] A flue gas inlet connected to the interior of the desulfurization chamber is provided at the lower end of one side of the treatment vertical barrel, and a connecting pipe is provided on one side of the treatment vertical barrel, the lower end of the connecting pipe is connected to the top of the desulfurization chamber, and the upper end of the connecting pipe is connected to the bottom of the denitrification chamber, and an air pump is installed on the connecting pipe. One end of the flue gas inlet extending into the desulfurization chamber and one end of the connecting pipe extending into the denitrification chamber are both provided with a dispersion component for dispersing the flue gas;

[0009] The upper ends of the desulfurization chamber and the denitrification chamber are both provided with spraying components for spraying;

[0010] A flue gas pipe connected to the denitrification chamber is provided at the upper end of the vertical barrel, and a filter assembly for filtering dust in the flue gas is provided at one end of the flue gas pipe away from the vertical barrel;

[0011] One side of the processing vertical barrel is connected to the lower end of the denitrification chamber and the desulfurization chamber with an overflow pipe, and one end of the overflow pipe away from the processing vertical barrel is provided with a processing component for processing the collected liquid.

[0012] As a further solution of the present invention: the dispersion component includes a first annular tube, which is respectively arranged at the bottom of the denitrification chamber and the desulfurization chamber, and is connected to a plurality of diversion pipes, a one-way valve is provided at the lower end of the diversion pipe, and a nozzle is installed at the upper end of the diversion pipe.

[0013] As a further solution of the present invention: the spray assembly includes a desulfurization liquid inlet pipe, which is arranged on one side of the processing vertical barrel at the upper end of the desulfurization chamber, and a denitrification liquid inlet pipe is arranged on one side of the upper end of the processing vertical barrel at the upper end of the denitrification chamber. The desulfurization liquid inlet pipe and the denitrification liquid inlet pipe are connected to a second annular pipe at one end located inside the desulfurization chamber and the denitrification chamber, and a plurality of atomizing nozzles are arranged at the lower end of the second annular pipe.

[0014] As a further solution of the present invention: the filtering assembly includes a discharge pipe, the discharge pipe is installed at one end of the smoke pipe away from the processing vertical barrel, a smoke cap is provided at the upper end of the discharge pipe, a smoke filter plate is provided at a position above the smoke pipe, and a cleaning assembly for cleaning the smoke filter plate is provided in the discharge pipe.

[0015] As a further solution of the present invention: the cleaning assembly includes a central shaft, which is rotatably connected between the center of the lower end surface of the discharge pipe and the center position of the smoke filter plate, and a cleaning brush for cleaning the smoke filter plate is fixedly connected to the upper end of the central shaft, and an ash discharge port is opened on one side of the lower end of the discharge pipe, and an openable debris cleaning door is provided on the ash discharge port.

[0016] As a further solution of the present invention: the processing component includes a processing box, which is fixedly connected to the end of the processing vertical barrel away from the drain port, the drain port is communicated with the cavity on one side of the processing box, the lower end surface of the processing box is provided with a drain port at a position below the drain port, a center roller is rotatably connected inside the processing box, four sliding grooves are opened on the center roller, liquid filter plates are slidably connected in the sliding grooves, second springs for pressing the liquid filter plates are installed inside the sliding grooves, a partition plate cooperating with the liquid filter plate is provided at the lower end of the processing box, the upper end of the partition plate is arc-shaped, a slag cleaning port is provided at the lower end of the processing box away from the processing vertical barrel, an openable slag cleaning door is provided on the slag cleaning port, and a driving component for intermittent rotation of the center roller is also provided on the processing box.

[0017] As a further solution of the present invention: the driving component includes a mounting plate, which is fixedly connected to the positions on both sides of the processing box, and a second motor is installed on the mounting plate on one side of the processing box. The position where the center roller connecting shaft passes through the processing box is fixedly connected with a groove wheel, and the processing box is rotatably connected to a position close to the first spring with a paddle wheel that cooperates with the groove wheel. Gears are installed on the connecting shaft of the paddle wheel and the end of the output shaft of the second motor, and the two gears are meshed with each other. The processing box is also provided with a shaking component for driving the liquid filter plate on one side to shake.

[0018] As a further solution of the present invention: the shaking assembly includes a shaking slider, which is slidably connected to a position on one side of the processing box, a first spring is installed between the protrusion at the end of the shaking slider and the processing box, a cam is fixedly connected to the middle position of the second motor output shaft, and a matching roller that cooperates with the cam is rotatably connected to the middle of the end face of the shaking slider.

[0019] As a further solution of the present invention: the height of the overflow pipe is higher than the height of the spray head.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can process the sprayed liquid by means of the processing component during use, thereby removing impurities in the spray liquid, thereby avoiding the problem of nozzle clogging due to excessive impurities during subsequent reuse.

[0022] 2. The present invention can maintain a certain liquid level inside the denitrification chamber and the desulfurization chamber by setting an overflow pipe higher than the first annular pipe, so that the flue gas will contact and react with the liquid once when entering the denitrification chamber and the desulfurization chamber, thereby improving the effect of desulfurization and denitrification.

[0023] 3. The present invention provides an intermittently rotatable liquid filter plate, which can continuously clean the filtered impurities to the side of the partition close to the slag cleaning door during use. At the same time, it cooperates with the shaking component to completely shake off the impurities on the liquid filter plate, thereby realizing the automatic slag discharge function. There is no need for workers to frequently clean the liquid filter plate, which reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the other side of the present invention.

[0026] Figure 3 It is a schematic diagram of the local structure in the present invention.

[0027] Figure 4 It is a schematic diagram of the structure of the groove wheel in the present invention.

[0028] Figure 5 It is a schematic diagram of the internal structure of the processing vertical barrel in the present invention.

[0029] Figure 6 It is a schematic diagram of the structure of the discharge pipe in the present invention.

[0030] Figure 7 It is a schematic diagram of the structure of the dispersed components in the present invention.

[0031] Figure 8 It is a schematic diagram of the internal structure of the processing box in the present invention.

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the center roller in the present invention.

[0033] Among them: 1. Treatment vertical barrel; 2. Emptying channel; 3. First annular pipe; 4. Denitrification chamber; 5. Second annular pipe; 6. Smoke pipe; 7. Atomizing nozzle; 8. Overflow pipe; 9. Partition; 10. Desulfurization chamber; 11. Drain port; 12. Diverter pipe; 13. Spray head; 14. One-way valve; 15. First motor; 16. Cleaning door; 17. Center axis; 18. Cleaning brush; 19. Discharge pipe; 20. Smoke cap; 21. Smoke filter plate; 2 2. Center roller; 23. Shaking slider; 24. Matching roller; 25. Mounting plate; 26. Processing box; 27. Cam; 28. First spring; 29. ​​Liquid filter plate; 30. Slag cleaning door; 31. Desulfurization liquid inlet pipe; 32. Denitrification liquid inlet pipe; 33. Air pump; 34. Flue gas inlet; 35. Connecting pipe; 36. Second motor; 37. Gear; 38. Groove wheel; 39. Paddle wheel; 40. Sliding groove; 41. Second spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 9 In the embodiment of the present invention, the flue gas dust removal equipment with desulfurization and denitrification includes a processing vertical barrel 1, and a plurality of supporting legs are installed at the lower end of the processing vertical barrel 1. The lower ends of the supporting legs are provided with universal wheels for movement. The universal wheels provided at the lower ends of the supporting legs can facilitate the movement of the equipment, which greatly improves the flexibility of the equipment and is convenient to use. A desulfurization chamber 10 is provided at the lower end of the processing vertical barrel 1, and a denitrification chamber 4 is provided at the upper end of the processing vertical barrel 1. The lower ends of the denitrification chamber 4 and the desulfurization chamber 10 are provided with an emptying channel 2 for discharging waste, and the port portions of the emptying channel 2 are provided with sealing plugs; the emptying channel 2 can be provided to facilitate the emptying of the liquid at the bottom of the denitrification chamber 4 and the desulfurization chamber 10, and to discharge the precipitated impurities, which is convenient to use.

[0036] A flue gas inlet 34 connected to the interior of the desulfurization chamber 10 is provided at the lower end of one side of the treatment vertical barrel 1. A connecting pipe 35 is provided on one side of the treatment vertical barrel 1. The lower end of the connecting pipe 35 is connected to the top of the desulfurization chamber 10. The upper end of the connecting pipe 35 is connected to the bottom of the denitrification chamber 4. An air pump 33 is installed on the connecting pipe 35. The end of the flue gas inlet 34 extending into the desulfurization chamber 10 and the end of the connecting pipe 35 extending into the denitrification chamber 4 are both provided with a dispersion component for dispersing the flue gas; the dispersion component includes a first annular pipe 3, The first annular tube 3 is respectively arranged at the bottom of the denitrification chamber 4 and the desulfurization chamber 10. A plurality of shunt pipes 12 are connected to the first annular tube 3. A one-way valve 14 is provided at the lower end of the shunt pipe 12. A nozzle 13 is installed at the upper end of each shunt pipe 12. The flue gas can be dispersed to the shunt pipe 12 through the first annular tube 3, and then sprayed out from the nozzle 13, thereby dispersing the flue gas, increasing the contact area between the flue gas and the liquid, and improving the desulfurization and denitrification effect. The one-way valve 14 can prevent the liquid from flowing back into the first annular tube 3.

[0037] The upper ends of the desulfurization chamber 10 and the denitrification chamber 4 are both provided with a spray assembly for spraying; the spray assembly includes a desulfurization liquid inlet pipe 31, the desulfurization liquid inlet pipe 31 is arranged on one side of the processing vertical barrel 1 at a position located at the upper end of the desulfurization chamber 10, and the upper end of the processing vertical barrel 1 is provided with a denitrification liquid inlet pipe 32 at a position located at the upper end of the denitrification chamber 4, and the desulfurization liquid inlet pipe 31 and the denitrification liquid inlet pipe 32 are connected to a second annular pipe 5 at one end located inside the desulfurization chamber 10 and the denitrification chamber 4, and a plurality of atomizing nozzles 7 are arranged at the lower end of the second annular pipe 5; through the second annular pipe 5, the desulfurization or denitrification liquid delivered can be dispersed and sprayed out from the atomizing nozzle 7, and the sprayed atomized liquid can fully contact and react with the flue gas to achieve desulfurization and denitrification. At the same time, the atomized liquid will absorb impurities in the flue gas and reduce the dust content of the flue gas.

[0038] A flue gas pipe 6 connected to the denitrification chamber 4 is provided at the upper end of the processing vertical barrel 1, and a filter assembly for filtering dust in the flue gas is provided at the end of the flue gas pipe 6 away from the processing vertical barrel 1; the filter assembly includes a discharge pipe 19, and the discharge pipe 19 is installed at the end of the flue gas pipe 6 away from the processing vertical barrel 1, and a smoke cap 20 is provided at the upper end of the discharge pipe 19. A flue gas filter plate 21 is provided at a position above the flue gas pipe 6, and a cleaning assembly for cleaning the flue gas filter plate 21 is provided in the discharge pipe 19; the flue gas treated by spraying can be filtered again by the provided flue gas filter plate 21, and further dust removal operation can be performed to achieve flue gas purification.

[0039] The cleaning component includes a central shaft 17, which is rotatably connected between the center of the lower end surface of the discharge pipe 19 and the center position of the flue gas filter plate 21. A cleaning brush 18 for cleaning the flue gas filter plate 21 is fixedly connected to the upper end of the central shaft 17. An ash discharge port is provided on one side of the lower end of the discharge pipe 19, and an openable cleaning door 16 is provided on the ash discharge port. When the flue gas filter plate 21 needs to be cleaned, the first motor 15 drives the central shaft 17 to rotate, and the rotation of the central shaft 17 drives the cleaning brush 18 to operate. The cleaning brush 18 rotates to clean the flue gas filter plate 21, and the impurities brushed off fall to the bottom of the discharge pipe 19 for collection. The cleaning door 16 can regularly remove the collected impurities.

[0040] One side of the processing vertical barrel 1, which is located at the lower end of the denitrification chamber 4 and the desulfurization chamber 10, is connected to an overflow pipe 8, and the end of the overflow pipe 8 away from the processing vertical barrel 1 is provided with a processing component for treating the collected liquid; the height of the overflow pipe 8 is higher than the height of the nozzle 13; the processing component is set up to process the sprayed liquid during use, and then the impurities in the spray liquid can be removed, avoiding the problem of nozzle clogging due to excessive impurities when it is reused later.

[0041] The processing assembly includes a processing box 26, which is fixedly connected to the end of the drain port 11 away from the processing vertical barrel 1, and the drain port 11 is communicated with the cavity on one side of the processing box 26. The lower end surface of the processing box 26 is provided with a drain port 11 below the drain port 11. The processing box 26 is rotatably connected with a center roller 22, and the center roller 22 is provided with four sliding grooves 40. Liquid filter plates 29 are slidably connected in the sliding grooves 40. Second springs 41 for pressing the liquid filter plates 29 are installed in the sliding grooves 40. The lower end of the processing box 26 is provided with a partition plate 9 that cooperates with the liquid filter plate 29, and the upper end of the partition plate 9 It is arc-shaped, and a slag cleaning port is provided at the lower end of the processing box 26 away from the processing vertical barrel 1. An openable slag cleaning door 30 is provided on the slag cleaning port. The processing box 26 is also provided with a driving component for intermittent rotation of the center roller 22; the center roller 22 and the liquid filter plate 29 can be driven to rotate intermittently by the set driving component, and the intermittently rotating liquid filter plate 29 can continuously clean the filtered impurities to the side of the partition 9 close to the slag cleaning door 30 when in use, and at the same time cooperate with the shaking component to completely shake off the impurities on the liquid filter plate 29, thereby realizing the automatic slag discharge function, eliminating the need for workers to frequently clean the liquid filter plate 29, thereby reducing the labor intensity of workers.

[0042] The driving assembly includes a mounting plate 25, which is fixedly connected to positions on both sides of the processing box 26, and a second motor 36 is installed on the mounting plate 25 on one side of the processing box 26. A groove wheel 38 is fixedly connected to the position where the connecting shaft of the center roller 22 passes through the processing box 26. A thumb wheel 39 that cooperates with the groove wheel 38 is rotatably connected to the processing box 26 near the first spring 28. Gears 37 are installed on the connecting shaft of the thumb wheel 39 and the end of the output shaft of the second motor 36. The two gears 37 are meshed with each other. A shaking assembly for driving the liquid filter plate 29 on one side to shake is also provided on the processing box 26; when working, the second motor 36 drives the gear 37 to rotate, and the rotation of the gear 37 can drive the thumb wheel 39 to rotate, and the rotation of the thumb wheel 39 can drive the groove wheel 38 to rotate intermittently, and the intermittent rotation of the groove wheel 38 can drive the center roller 22 and the liquid filter plate 29 to rotate accordingly.

[0043] The shaking assembly includes a shaking slider 23, which is slidably connected to a position on one side of a processing box 26. A first spring 28 is installed between the protrusion at the end of the shaking slider 23 and the processing box 26. A cam 27 is fixedly connected to the middle of the output shaft of the second motor 36. A matching roller 24 that cooperates with the cam 27 is rotatably connected to the middle of the end face of the shaking slider 23. During operation, the second motor 36 drives the cam 27 to rotate, and the rotation of the cam 27 can drive the shaking slider 23 to shake. The shaking of the shaking slider 23 can drive the liquid filter plate 29 to shake, and the matching roller 24 can reduce the wear of the cam 27.

[0044] The working principle of the present invention is: when working, first connect the desulfurization liquid inlet pipe 31 and the denitrification liquid inlet pipe 32 to the liquid supply source, and then connect the two liquid discharge ports 11 to the collection box respectively. When in use, let the flue gas enter from the flue gas inlet 34, the introduced flue gas will enter the first annular pipe 3 in the desulfurization chamber 10, and then be sprayed out from the nozzle 13, the sprayed liquid contacts with the desulfurization liquid at the bottom of the desulfurization chamber 10, and then emerge from the liquid surface, and then the desulfurization liquid is sprayed out through the corresponding atomizing nozzle 7 to react with the flue gas to achieve desulfurization, and then the gas delivery pump 33 transports the desulfurized flue gas to the denitrification chamber 4, and sprays out through the first annular pipe 3 and the nozzle 13 at the bottom of the denitrification chamber 4, the sprayed flue gas contacts with the denitrification liquid at the bottom of the denitrification chamber 4, and then emerges from the liquid surface, the emerging flue gas fully reacts with the denitrification liquid sprayed from the atomizing nozzle 7 at the upper end of the denitrification chamber 4 to denitrify, and the denitrified flue gas The flue gas enters the flue gas pipe 6, and the flue gas treated by the spraying can be filtered again through the flue gas filter plate 21, and further dust removal operation is performed to achieve flue gas purification. The treated flue gas is discharged from the upper end of the discharge pipe 19. When the flue gas filter plate 21 needs to be cleaned, the first motor 15 will drive the central shaft 17 to rotate, and the rotation of the central shaft 17 drives the cleaning brush 18 to operate. The cleaning brush 18 rotates to clean the flue gas filter plate 21, and the impurities brushed off fall to the bottom of the discharge pipe 19 for collection. The cleaning door 16 is set to regularly remove the collected impurities. When the liquid in the denitrification chamber 4 and the desulfurization chamber 10 reaches the overflow pipe 8, the liquid will enter the overflow pipe 8, and then enter the processing box 26. The collected liquid can be filtered through the liquid filter plate 29 to achieve liquid impurity removal, and then discharged from the drain port 11 to the collection box for collection.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flue gas dust removal device with desulfurization and denitrification functions, comprising a processing vertical barrel (1), wherein a plurality of supporting legs are installed at the lower end of the processing vertical barrel (1), and the lower ends of the supporting legs are provided with universal wheels for movement, wherein: The lower end of the treatment vertical barrel (1) is provided with a desulfurization chamber (10), the upper end of the treatment vertical barrel (1) is provided with a denitrification chamber (4), the lower ends of the denitrification chamber (4) and the desulfurization chamber (10) are both provided with an emptying channel (2) for discharging waste, and the ports of the emptying channel (2) are both provided with sealing plugs; A flue gas inlet (34) communicating with the interior of the desulfurization chamber (10) is provided at the lower end of one side of the treatment vertical barrel (1), and a connecting pipe (35) is provided at one side of the treatment vertical barrel (1), the lower end of the connecting pipe (35) communicating with the top of the desulfurization chamber (10), and the upper end of the connecting pipe (35) communicating with the bottom of the denitrification chamber (4), and an air delivery pump (33) is installed on the connecting pipe (35), and a dispersion component for dispersing the flue gas is provided at one end of the flue gas inlet (34) extending into the desulfurization chamber (10) and at one end of the connecting pipe (35) extending into the denitrification chamber (4); The upper ends of the desulfurization chamber (10) and the denitrification chamber (4) are both provided with spraying components for spraying; The upper end of the processing vertical barrel (1) is provided with a flue gas pipe (6) which is in communication with the denitrification chamber (4); the end of the flue gas pipe (6) which is away from the processing vertical barrel (1) is provided with a filter assembly for filtering dust in the flue gas; One side of the treatment vertical barrel (1) is connected to an overflow pipe (8) at a position below the denitrification chamber (4) and the desulfurization chamber (10), and one end of the overflow pipe (8) away from the treatment vertical barrel (1) is provided with a treatment component for treating the collected liquid.

2. The flue gas dust removal equipment with desulfurization and denitrification according to claim 1, characterized in that: The dispersion component comprises a first annular tube (3), the first annular tube (3) being respectively arranged at the bottom of the denitrification chamber (4) and the desulfurization chamber (10), the first annular tube (3) being connected to a plurality of branch pipes (12), the lower end of the branch pipe (12) being provided with a one-way valve (14), and the upper end of each branch pipe (12) being provided with a nozzle (13).

3. The flue gas dust removal equipment with desulfurization and denitrification according to claim 1, characterized in that: The spray assembly comprises a desulfurization liquid inlet pipe (31), the desulfurization liquid inlet pipe (31) being arranged on one side of the processing vertical barrel (1) at a position located at the upper end of the desulfurization chamber (10), and a denitrification liquid inlet pipe (32) being arranged on one side of the upper end of the processing vertical barrel (1) at a position located at the upper end of the denitrification chamber (4), the desulfurization liquid inlet pipe (31) and the denitrification liquid inlet pipe (32) being connected to a second annular pipe (5) at one end located inside the desulfurization chamber (10) and the denitrification chamber (4), and a plurality of atomizing nozzles (7) being arranged at the lower end of the second annular pipe (5).

4. The flue gas dust removal equipment with desulfurization and denitrification according to claim 1, characterized in that: The filter assembly comprises a discharge pipe (19), the discharge pipe (19) being installed at one end of the smoke pipe (6) away from the processing vertical barrel (1), a smoke cap (20) being provided at the upper end of the discharge pipe (19), a smoke filter plate (21) being provided at a position above the smoke pipe (6), and a cleaning assembly for cleaning the smoke filter plate (21) being provided in the discharge pipe (19).

5. The flue gas dust removal equipment with desulfurization and denitrification according to claim 4, characterized in that: The cleaning assembly comprises a central shaft (17), the central shaft (17) being rotatably connected between the center of the lower end surface of the discharge pipe (19) and the center position of the smoke filter plate (21), the upper end of the central shaft (17) being fixedly connected with a cleaning brush (18) for cleaning the smoke filter plate (21), and a dust discharge port being provided at one side of the lower end of the discharge pipe (19), and an openable cleaning door (16) being provided on the dust discharge port.

6. The flue gas dust removal equipment with desulfurization and denitrification according to claim 1, characterized in that: The processing assembly comprises a processing box (26), the processing box (26) being fixedly connected to one end of the liquid discharge port (11) away from the processing vertical barrel (1), the liquid discharge port (11) being communicated with a cavity on one side of the processing box (26), the liquid discharge port (11) being provided at a position below the liquid discharge port (11) on the lower end surface of the processing box (26), the processing box (26) being rotatably connected to a center roller (22) inside, the center roller (22) being provided with four sliding grooves (40), each of which is slidably connected to a A liquid filter plate (29), a second spring (41) for pressing the liquid filter plate (29) is installed inside the sliding groove (40), a partition (9) cooperating with the liquid filter plate (29) is provided at the lower end of the processing box (26), the upper end of the partition (9) is arc-shaped, a slag cleaning port is provided at the lower end of the processing box (26) away from the processing vertical barrel (1), and an openable slag cleaning door (30) is provided on the slag cleaning port, and a driving component for intermittent rotation of the center roller (22) is also provided on the processing box (26).

7. The flue gas dust removal equipment with desulfurization and denitrification according to claim 6, characterized in that: The driving assembly comprises a mounting plate (25), wherein the mounting plates (25) are respectively fixedly connected to positions on both sides of the processing box (26); a second motor (36) is mounted on the mounting plate (25) on one side of the processing box (26); a groove wheel (38) is fixedly connected to the position where the connecting shaft of the center roller (22) passes through the processing box (26); a thumbwheel (39) cooperating with the groove wheel (38) is rotatably connected to the position of the processing box (26) near the first spring (28); a gear (37) is mounted on the connecting shaft of the thumbwheel (39) and the end of the output shaft of the second motor (36); the two gears (37) are meshed with each other; and a shaking assembly for driving the liquid filter plate (29) on one side to shake is also provided on the processing box (26).

8. The flue gas dust removal equipment with desulfurization and denitrification according to claim 7, characterized in that: The shaking assembly includes a shaking slider (23), and the shaking slider (23) is slidably connected to a position on one side of the processing box (26). A first spring (28) is installed between the protrusion at the end of the shaking slider (23) and the processing box (26). A cam (27) is fixedly connected to the middle position of the output shaft of the second motor (36), and a matching roller (24) that matches the cam (27) is rotatably connected to the middle of the end face of the shaking slider (23).

9. The flue gas dust removal equipment with desulfurization and denitrification according to claim 1, characterized in that: The height of the overflow pipe (8) is higher than the height of the spray head (13).

10. A flue gas dust removal device and method with desulfurization and denitrification according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: When working, first connect the desulfurization liquid inlet pipe (31) and the denitrification liquid inlet pipe (32) to the liquid supply source, and then connect the two liquid discharge ports (11) to the collection box respectively. When in use, let the flue gas in from the flue gas inlet (34), the introduced flue gas will enter the first annular pipe (3) in the desulfurization chamber (10), and then be sprayed out from the nozzle (13). The sprayed liquid contacts the desulfurization liquid at the bottom of the desulfurization chamber (10), and then emerges from the liquid surface, and then sprays the desulfurization liquid through the corresponding atomizing nozzle (7) to react with the flue gas to achieve desulfurization; Step 2, the gas delivery pump (33) then delivers the desulfurized flue gas into the denitrification chamber (4), and ejects the flue gas through the first annular tube (3) and the nozzle (13) at the bottom of the denitrification chamber (4), the ejected flue gas contacts the denitrification liquid at the bottom of the denitrification chamber (4), and then emerges from the liquid surface, and the emerged flue gas fully reacts with the denitrification liquid ejected from the atomizing nozzle (7) at the upper end of the denitrification chamber (4), thereby performing denitrification; Step 3: The flue gas after denitrification enters the flue gas pipe (6). The flue gas treated by spraying can be filtered again through the provided flue gas filter plate (21), and further dust removal operation is performed to achieve flue gas purification. The treated flue gas is discharged from the upper end of the discharge pipe (19). When it is necessary to clean the flue gas filter plate (21), the first motor (15) drives the central shaft (17) to rotate, and the rotation of the central shaft (17) drives the cleaning brush (18) to operate. The cleaning brush (18) rotates to achieve When the flue gas filter plate (21) is cleaned, the impurities removed by the cleaning fall to the bottom of the discharge pipe (19) for collection. The impurity cleaning door (16) is provided to regularly remove the collected impurities. When the liquid in the denitrification chamber (4) and the desulfurization chamber (10) reaches the overflow pipe (8), the liquid will enter the overflow pipe (8) and then enter the processing box (26). The collected liquid can be filtered through the liquid filter plate (29) to achieve liquid impurity removal, and then discharged from the discharge port (11) to the collection box for collection.

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