A flue gas denitrification device and a flue gas denitrification method

Abstract

The present invention provides a flue gas denitration device and a denitration method thereof, and relates to the technical field of flue gas purification. It comprises a bottom plate, a tower body is fixedly arranged on the top surface of the bottom plate, a conical tower cover is fixedly arranged on the top of the tower body, a plurality of first atomizing tubes and a second atomizing tubes distributed in a grid shape are arranged in the middle of the tower body, a plurality of first atomizing nozzles are arranged on the first atomizing tube, and a plurality of second atomizing nozzles are arranged on the second atomizing tube; a plurality of layers of first dust removal plates and second dust removal plates are arranged in an alternating and interlaced manner in the middle and upper part of the tower body, and a plurality of elliptical through holes are opened on the first dust removal plates and the second dust removal plates, and an activated carbon adsorption block is fixedly arranged inside the elliptical through holes. The present invention can make ammonia water fully contact and react with nitrogen oxides to ensure a relatively high nitrogen oxide removal rate; at the same time, the present invention can adsorb dust and effectively improve the dust removal effect of flue gas.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas purification, and in particular to a flue gas denitration device and a denitration method thereof. Background Art

[0002] The flue gas emitted by modern industrial production contains a large amount of nitrogen oxides. After being emitted into the outside atmosphere, the nitrogen oxides will react chemically with other substances in the atmosphere under long-term exposure to sunlight and generate pollutants such as acidic substances, which can easily cause serious pollution to the atmosphere. Therefore, it is necessary to remove nitrogen oxides in the flue gas through a flue gas denitrification device.

[0003] A Chinese invention patent discloses a flue gas denitrification device (publication number: CN111450684B), which includes a denitrification kettle, four sets of legs, a first air pipe, a second air pipe, a water tank and a hollow shaft. The four sets of legs are evenly installed at the bottom of the denitrification kettle, the first air pipe and the second air pipe are both installed on the left side of the denitrification kettle and connected to the inside of the denitrification kettle, and the water tank is installed on the inner wall of the denitrification kettle.

[0004] However, the above patent and the existing flue gas denitrification devices have the following problems when in use: ammonia water cannot fully contact the nitrogen oxides in the flue gas, so that the denitrification reaction is restricted, resulting in a relatively low nitrogen oxide removal rate; during the flue gas treatment process, a large amount of dust (solid particles) contained in the flue gas cannot be effectively removed, and the dust removal effect is poor. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and propose a flue gas denitrification device and a denitrification method thereof. The present invention adopts the following technical solutions:

[0006] The present invention provides a flue gas denitration device, comprising a bottom plate, a tower body is fixedly arranged on the top surface of the bottom plate, a conical tower cover is fixedly arranged on the top of the tower body, a smoke inlet pipe is installed at the middle and lower part of the left side of the tower body, a smoke exhaust pipe is installed on the top of the conical tower cover, and a sewage discharge pipe is installed at the bottom of the right side of the tower body;

[0007] A plurality of first atomizing tubes are arranged in the middle of the tower body and are equidistantly distributed on the left and right sides. The front and rear ends of each of the first atomizing tubes rotate to penetrate the inner wall of the tower body and extend to the outside, and a plurality of first atomizing nozzles are installed on the top surface of each first atomizing tube.

[0008] A plurality of second atomizing tubes are arranged in the middle of the tower body and are equidistantly distributed in the front and rear directions. The left and right ends of each of the second atomizing tubes rotate to penetrate the inner wall of the tower body and extend to the outside. A plurality of second atomizing nozzles are arranged equidistantly distributed on the bottom surface of each second atomizing tube.

[0009] The plurality of first atomizing tubes and the plurality of second atomizing tubes are distributed in a grid shape, the plurality of second atomizing tubes are located above the plurality of first atomizing tubes, and the plurality of first atomizing nozzles and the plurality of second atomizing nozzles are oriented up and down and are distributed alternately;

[0010] A plurality of first dust removal plates are arranged side by side in the middle and upper part of the tower body, and a first connecting shaft is fixedly arranged at the front and rear ends of each first dust removal plate, and the outer end of each first connecting shaft is rotatably inserted through the inner wall of the tower body;

[0011] A plurality of second dust removal plates are arranged in a front-to-back arrangement in the middle and upper part of the tower body, and a second connecting shaft is fixedly provided at the left and right ends of each second dust removal plate, and the outer end of each second connecting shaft is rotatably inserted through the inner wall of the tower body;

[0012] A plurality of first dust removal plates and a plurality of second dust removal plates are alternately distributed, and a plurality of elliptical through holes are provided on the first dust removal plates and the second dust removal plates, and a hollow activated carbon adsorption block is fixed inside each of the elliptical through holes.

[0013] Preferably, an atomizing booster pump is fixedly arranged at the bottom of the front of the tower body, and a through-distributed booster water pipe is fixedly arranged at the water outlet of the atomizing booster pump, and the booster water pipe is continuously bent and first extends upward to the left side of the front of the tower body, and then extends around the left side of the tower body to the back of the tower body;

[0014] The rear end of each of the first atomizing tubes is fixedly provided with a first telescopic hose that is distributed through, and each of the first telescopic hoses is connected through with the pressurized water pipe. The left end of each of the second atomizing tubes is fixedly provided with a second telescopic hose that is distributed through, and each of the second telescopic hoses is connected through with the pressurized water pipe.

[0015] Preferably, the front end of each of the first atomizing tubes is fixedly provided with a first swing arm vertically distributed downward, and the bottom ends of the first swing arms are movably hinged to the same first connecting rod;

[0016] The right end of each of the second atomizing tubes is fixedly provided with a second swing arm which is vertically distributed upward, and the top ends of the plurality of second swing arms are movably hinged to the same second connecting rod.

[0017] Preferably, a pair of vertically distributed linkage shafts are rotatably inserted on the right side of the front face and the right side of the front face of the tower body, and the outer end of each linkage shaft is sleeved with a concentrically fixed double-sided gear, the inner side of the double-sided gear is in the shape of a bevel gear, and the pair of double-sided gears are meshed and connected with each other;

[0018] A first notched gear is fixedly provided at the top end of the first swing arm located on the far right, and the first notched gear is meshedly connected with the adjacent double-sided gear. A second notched gear is fixedly provided at the bottom end of the second swing arm located on the far front, and the second notched gear is meshedly connected with the adjacent double-sided gear.

[0019] Preferably, a circular through hole is opened on the right side of the tower body, a servo motor with an output end facing outward is fixedly arranged inside the circular through hole, a concentrically fixed limit turntable is sleeved on the motor shaft end of the servo motor, and an eccentrically distributed limit pin is fixedly arranged on the outer side of the limit turntable;

[0020] The right end of the second atomizing tube at the rearmost side extends outward and is fixed with a reciprocating swing arm vertically distributed downward, an elliptical limit pin hole is opened at the bottom end of the reciprocating swing arm, and the outer end of the limit pin shaft is slidably engaged in the elliptical limit pin hole.

[0021] Preferably, the front end portions of several first connecting shafts located at the left front are fixed with a first L-shaped swing arm, the left end portions of several first L-shaped swing arms are movably hinged to the same fifth connecting rod, and the front end portions of the remaining first connecting shafts located at the front are fixed with a third swing arm distributed vertically downward, and the bottom end portion of the first L-shaped swing arm and the bottom end portions of several third swing arms on the same horizontal plane are movably hinged to the same third connecting rod.

[0022] Preferably, the right ends of several second connecting shafts located at the right front are fixed with a second L-shaped swing arm, the front ends of several second L-shaped swing arms are movably hinged to the same sixth connecting rod, and the right ends of the remaining second connecting shafts located on the right side are fixed with a fourth swing arm distributed vertically downward, and the bottom end of the second L-shaped swing arm and the bottom ends of several fourth swing arms on the same horizontal plane are movably hinged to the same fourth connecting rod.

[0023] Preferably, a third connecting shaft is rotatably inserted in the middle of the front side of the tower body, a fifth swing arm vertically distributed is fixedly provided at the outer end of the third connecting shaft, and a pair of first elliptical pin holes are opened at the upper and lower ends of the fifth swing arm;

[0024] An extended swing arm is fixed to the top end of the first swing arm located in the middle, and a first pin is fixed to the top end of the extended swing arm. A third pin is fixed to the middle part of the third connecting rod located at the bottom, and the outer ends of the first pin and the third pin are respectively slidably engaged in a pair of first elliptical pin holes.

[0025] Preferably, a fourth connecting shaft is rotatably inserted in the middle of the right side of the tower body, a sixth swing arm vertically distributed is fixedly provided at the outer end of the fourth connecting shaft, and a pair of second elliptical pin holes are opened at the upper and lower ends of the sixth swing arm;

[0026] A second pin is fixedly arranged in the middle of the second connecting rod, a fourth pin is fixedly arranged in the middle of the fourth connecting rod located at the bottom, and the outer ends of the second pin and the fourth pin are respectively slidably engaged in a pair of second elliptical pin holes.

[0027] The present invention also provides a denitration method for a flue gas denitration device, comprising the following steps:

[0028] Step 1: Under the driving action of the servo motor, the motor shaft of the servo motor drives the limit turntable to rotate synchronously, and under the limiting action formed by the limit pin shaft and the elliptical limit pin hole, the reciprocating swing arm, the second atomization tube at the rearmost side and its corresponding second swing arm are driven to swing back and forth, and then the second connecting rod and the plurality of second swing arms are articulated together to drive the remaining second atomization tubes to swing back and forth synchronously;

[0029] Step 2: The second notched gear meshes to drive the adjacent double-sided gear to reciprocate. Under the mutual meshing and rotation of the pair of double-sided gears, the other double-sided gear meshes again to drive the first notched gear, the first swing arm on the far right, and the first atomizing tube to swing back and forth left and right. Then, through the joint articulation of the first connecting rod and the first swing arms, the remaining first atomizing tubes are driven to swing back and forth left and right synchronously.

[0030] Step 3: The first swing arm located in the middle portion drives the extended swing arm to swing back and forth synchronously, and under the limiting action of the first pin shaft, the third pin shaft and a pair of first elliptical pin holes, drives the fifth swing arm to swing back and forth along the third connecting shaft, and drives the third connecting rod located at the bottom to swing back and forth;

[0031] Under the joint articulation of the fifth connecting rod and the plurality of first L-shaped swing arms, and under the joint articulation of the third connecting rod and the corresponding first L-shaped swing arms and the plurality of third swing arms, the plurality of first dust removal plates and the plurality of pairs of first connecting shafts are driven to swing back and forth synchronously;

[0032] Step 4: under the limiting action of the second pin shaft, the fourth pin shaft and the pair of second elliptical pin holes, the sixth swing arm is driven to swing back and forth along the fourth connecting shaft, and the fourth connecting rod located at the bottom is driven to swing back and forth;

[0033] Under the joint articulation of the sixth connecting rod and the plurality of second L-shaped swing arms, and under the joint articulation of the fourth connecting rod and the corresponding second L-shaped swing arms and the plurality of fourth swing arms, the plurality of second dust removal plates and the plurality of pairs of second connecting shafts are driven to swing back and forth synchronously;

[0034] Step 5: Under the boosting effect of the atomizing booster pump, the ammonia liquid enters the boosting water pipe after being boosted by the atomizing booster pump, and then enters the first atomizing pipe along the first telescopic hose and forms atomized ammonia liquid sprayed upward through the first atomizing nozzle. At the same time, the ammonia liquid enters the second atomizing pipe along the second telescopic hose and forms atomized ammonia liquid sprayed downward through the second atomizing nozzle;

[0035] Step 6: The flue gas enters the bottom of the tower along the smoke inlet pipe and flows upward. The nitrogen oxides in the flue gas react chemically with the atomized ammonia liquid to generate nitrogen and water, achieving the purpose of flue gas denitrification. A large amount of dust in the flue gas dissolves in the atomized ammonia liquid and water, achieving the purpose of initial dust reduction in the flue gas.

[0036] The flue gas then passes through the elliptical through holes on the first and second dust removal plates. A small amount of dust in the flue gas is adsorbed on the first and second dust removal plates to achieve secondary dust reduction of the flue gas. The harmful gases in the flue gas are adsorbed in the activated carbon adsorption blocks to achieve flue gas purification. The flue gas then goes upward into the conical tower cover and is discharged to the next process along the exhaust pipe.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. In the present invention, by controlling a plurality of first atomizing tubes and first atomizing nozzles, and a plurality of second atomizing tubes and second atomizing nozzles to form staggered reciprocating swings, the nitrogen oxides in the flue gas can fully contact with the atomized ammonia liquid and react chemically to generate nitrogen and water, so that the nitrogen oxide removal rate is relatively high; in addition, a large amount of dust in the flue gas can be dissolved in the atomized ammonia liquid and water, so as to achieve the purpose of initial dust reduction in the flue gas;

[0039] 2. In the present invention, by controlling a plurality of first dust removal plates and a plurality of second dust removal plates to form staggered reciprocating swings, a small amount of dust in the flue gas is adsorbed on the first dust removal plates and the second dust removal plates, thereby achieving the purpose of secondary dust reduction of the flue gas, and the harmful gas in the flue gas is adsorbed in the activated carbon adsorption block, thereby achieving the purpose of flue gas purification;

[0040] In summary, the present invention can make ammonia water and nitrogen oxides fully contact and react to ensure a relatively high nitrogen oxide removal rate; at the same time, the present invention can adsorb dust and effectively improve the dust removal effect of flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0044] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0045] Figure 4 It is a schematic diagram of the structure inside the tower body of the present invention;

[0046] Figure 5 It is an exploded schematic diagram of a plurality of first dust removal plates and a plurality of second dust removal plates in the present invention;

[0047] Figure 6 It is a schematic diagram of the structure of the first dust removal plate and a plurality of activated carbon adsorption blocks in the present invention;

[0048] Figure 7 It is an exploded schematic diagram of a plurality of first atomization tubes and a plurality of second atomization tubes in the present invention;

[0049] Figure 8 It is a schematic diagram of the meshing of a pair of double-sided gears with a first notched gear and a second notched gear in the present invention;

[0050] Serial numbers in the figure: 1, bottom plate; 2, tower body; 3, conical tower cover; 4, smoke inlet pipe; 5, smoke exhaust pipe; 6, sewage pipe; 7, first atomizing pipe; 8, first atomizing nozzle; 9, first swing arm; 10, first connecting rod; 11, extended swing arm; 12, first pin shaft; 13, second atomizing pipe; 14, second atomizing nozzle; 15, second swing arm; 16, second connecting rod; 17, second pin shaft; 18, reciprocating swing arm; 19, servo motor; 20, limit turntable; 21, limit pin shaft; 22, first notch gear; 23, linkage shaft; 24, double-sided gear; 25, second notch gear ; 26. Atomizing booster pump; 27. Booster water pipe; 28. First telescopic hose; 29. ​​Second telescopic hose; 30. First dust removal plate; 31. Activated carbon adsorption block; 32. First connecting shaft; 33. First L-shaped swing arm; 34. Fifth connecting rod; 35. Third swing arm; 36. Third connecting rod; 37. Third pin; 38. Second dust removal plate; 39. Second connecting shaft; 40. Second L-shaped swing arm; 41. Sixth connecting rod; 42. Fourth swing arm; 43. Fourth connecting rod; 44. Fourth pin; 45. Third connecting shaft; 46. Fifth swing arm; 47. Fourth connecting shaft; 48. Sixth swing arm. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] Embodiment 1: This embodiment provides a flue gas denitrification device, see Figure 1-8 , comprising a bottom plate 1, a tower body 2 is fixedly arranged on the top surface of the bottom plate 1, a conical tower cover 3 is fixedly arranged on the top of the tower body 2, a smoke inlet pipe 4 is installed at the middle and lower part of the left side of the tower body 2, smoke enters the bottom of the tower body 2 along the smoke inlet pipe 4 and flows upward, a smoke exhaust pipe 5 is installed on the top of the conical tower cover 3, and a sewage discharge pipe 6 is installed at the bottom of the right side of the tower body 2;

[0053] A plurality of first atomizing tubes 7 are arranged in the middle of the tower body 2 and are equidistantly distributed on the left and right sides. The front and rear ends of each first atomizing tube 7 rotate to penetrate the inner wall of the tower body 2 and extend to the outside, and a plurality of first atomizing nozzles 8 are installed on the top surface of each first atomizing tube 7 and are equidistantly distributed.

[0054] A plurality of second atomizing tubes 13 equidistantly distributed in the front and rear are provided in the middle of the tower body 2. The left and right ends of each second atomizing tube 13 rotate to penetrate the inner wall of the tower body 2 and extend to the outside, and a plurality of second atomizing nozzles 14 equidistantly distributed are installed on the bottom surface of each second atomizing tube 13.

[0055] A plurality of first atomizing tubes 7 and a plurality of second atomizing tubes 13 are distributed in a grid shape, a plurality of second atomizing tubes 13 are located above a plurality of first atomizing tubes 7, and a plurality of first atomizing nozzles 8 and a plurality of second atomizing nozzles 14 are oriented up and down and are distributed alternately;

[0056] A plurality of first dust removal plates 30 are arranged side by side in the middle and upper part of the tower body 2. A first connecting shaft 32 is fixedly arranged at the front and rear ends of each first dust removal plate 30. The outer end of each first connecting shaft 32 is rotatably inserted through the inner wall of the tower body 2.

[0057] A plurality of second dust removal plates 38 are arranged in a front-to-back arrangement in the middle and upper part of the tower body 2. A second connecting shaft 39 is fixedly provided at the left and right ends of each second dust removal plate 38. The outer end of each second connecting shaft 39 is rotatably inserted through the inner wall of the tower body 2.

[0058] A plurality of first dust removal plates 30 and a plurality of second dust removal plates 38 are alternately distributed, and a plurality of elliptical through holes are provided on the first dust removal plates 30 and the second dust removal plates 38. A hollow activated carbon adsorption block 31 is fixed inside each elliptical through hole. The activated carbon adsorption block 31 can adsorb harmful gases in the flue gas to achieve the purpose of flue gas purification.

[0059] It should be noted that: in this embodiment, an atomizing booster pump 26 is fixedly provided at the bottom of the front of the tower body 2, and a through-distributed booster water pipe 27 is fixedly provided at the water outlet of the atomizing booster pump 26. The booster water pipe 27 is continuously bent and first extends upward to the left side of the front of the tower body 2, and then extends to the back of the tower body 2 around the left side of the tower body 2. Under the boosting effect of the atomizing booster pump 26, the ammonia liquid enters the booster water pipe 27 after being pressurized by the atomizing booster pump 26;

[0060] A first telescopic hose 28 is fixedly provided at the rear end of each first atomizing tube 7, and each first telescopic hose 28 is connected to the booster water pipe 27, so that the ammonia liquid can flow into the first atomizing tube 7 along the first telescopic hose 28 and pass through the first atomizing nozzle 8 to form atomized ammonia liquid sprayed upward;

[0061] The left end of each second atomizing tube 13 is fixedly provided with a second telescopic hose 29 which is distributed through the second atomizing tube 13. Each second telescopic hose 29 is connected to the boosting water pipe 27. The ammonia liquid can enter the second atomizing tube 13 along the second telescopic hose 29 and pass through the second atomizing nozzle 14 to form atomized ammonia liquid sprayed downward.

[0062] Embodiment 2: Based on Embodiment 1, this embodiment also includes the following contents:

[0063] like Figure 4 , Figure 7 and Figure 8 As shown, the front end of each first atomizing tube 7 is fixedly provided with a first swing arm 9 vertically distributed downward, and the bottom ends of the first swing arms 9 are movably hinged to the same first connecting rod 10;

[0064] A second swing arm 15 vertically distributed upward is fixedly disposed at the right end of each second atomizing tube 13, and the top ends of the second swing arms 15 are movably hinged to the same second connecting rod 16;

[0065] A pair of vertically distributed linkage shafts 23 are rotatably inserted on the right side of the front face and the right side of the tower body 2, and the outer end of each linkage shaft 23 is sleeved with a concentrically fixed double-sided gear 24, the inner side of the double-sided gear 24 is in the shape of a bevel gear, and the pair of double-sided gears 24 are meshed and connected with each other, and the pair of double-sided gears 24 mesh and rotate with each other;

[0066] A first notched gear 22 is fixedly disposed at the top end of the first swing arm 9 located at the far right, and the first notched gear 22 is meshedly connected with an adjacent double-sided gear 24. A second notched gear 25 is fixedly disposed at the bottom end of the second swing arm 15 located at the far front, and the second notched gear 25 is meshedly connected with an adjacent double-sided gear 24.

[0067] A circular through hole is provided on the right side of the tower body 2, and a servo motor 19 with an output end facing outward is fixed inside the circular through hole. A concentrically fixed limit turntable 20 is sleeved on the motor shaft end of the servo motor 19. The motor shaft of the servo motor 19 can drive the limit turntable 20 to rotate synchronously, and an eccentrically distributed limit pin shaft 21 is fixed on the outer side of the limit turntable 20.

[0068] The right end of the second atomization tube 13 at the rearmost side extends outward and is fixed with a reciprocating swing arm 18 vertically distributed downward. An elliptical limit pin hole is provided at the bottom end of the reciprocating swing arm 18. The outer end of the limit pin shaft 21 is slidably engaged in the elliptical limit pin hole. Under the limiting action formed by the limit pin shaft 21 and the elliptical limit pin hole, the reciprocating swing arm 18, the rearmost second atomization tube 13 and its corresponding second swing arm 15 can be driven to swing back and forth.

[0069] Embodiment 3: Based on Embodiment 2, this embodiment also includes the following contents:

[0070] like Figure 4 and Figure 5 As shown, the front ends of the plurality of first connecting shafts 32 located at the left front are all fixedly provided with first L-shaped swing arms 33, the left ends of the plurality of first L-shaped swing arms 33 are movably hinged with the same fifth connecting rod 34, the front ends of the remaining first connecting shafts 32 located at the front are all fixedly provided with third swing arms 35 vertically distributed downward, the bottom ends of the first L-shaped swing arms 33 and the bottom ends of the plurality of third swing arms 35 on the same horizontal plane are movably hinged with the same third connecting rod 36, under the joint hinge action of the fifth connecting rod 34 and the plurality of first L-shaped swing arms 33, and under the joint hinge action of the third connecting rod 36 and the corresponding first L-shaped swing arms 33 and the plurality of third swing arms 35, the plurality of first dust removal plates 30 and the plurality of pairs of first connecting shafts 32 can be driven to synchronously swing back and forth left and right;

[0071] The right ends of several second connecting shafts 39 located at the right front are fixed with second L-shaped swing arms 40, and the front ends of several second L-shaped swing arms 40 are movably hinged to the same sixth connecting rod 41. The right ends of the remaining second connecting shafts 39 located on the right side are fixed with fourth swing arms 42 distributed vertically downward, and the bottom ends of the second L-shaped swing arms 40 and the bottom ends of several fourth swing arms 42 on the same horizontal plane are movably hinged to the same fourth connecting rod 43. Under the joint hinge action of the sixth connecting rod 41 and the several second L-shaped swing arms 40, and under the joint hinge action of the fourth connecting rod 43 and the corresponding second L-shaped swing arms 40 and several fourth swing arms 42, several second dust removal plates 38 and several pairs of second connecting shafts 39 can be driven to swing back and forth synchronously.

[0072] Embodiment 4: Based on Embodiment 3, this embodiment also includes the following contents:

[0073] like Figure 4 , Figure 5 and Figure 7 As shown, a third connecting shaft 45 is rotatably inserted in the middle of the front side of the tower body 2, and a fifth swing arm 46 vertically distributed is fixedly arranged at the outer end of the third connecting shaft 45, and a pair of first elliptical pin holes are opened at the upper and lower ends of the fifth swing arm 46;

[0074] An extended swing arm 11 is fixedly arranged at the top end of the first swing arm 9 located in the middle, and the first swing arm 9 located in the middle can drive the extended swing arm 11 to swing back and forth synchronously, and a first pin shaft 12 is fixedly arranged at the top end of the extended swing arm 11, and a third pin shaft 37 is fixedly arranged at the middle of the third connecting rod 36 located at the bottom, and the outer ends of the first pin shaft 12 and the third pin shaft 37 are respectively slidably engaged in a pair of first elliptical pin holes, and under the limiting action of the first pin shaft 12, the third pin shaft 37 and the pair of first elliptical pin holes, the fifth swing arm 46 can be driven to swing back and forth along the third connecting shaft 45, and the third connecting rod 36 located at the bottom can be driven to swing back and forth;

[0075] A fourth connecting shaft 47 is rotatably inserted in the middle of the right side of the tower body 2, and a sixth swing arm 48 vertically distributed is fixedly arranged at the outer end of the fourth connecting shaft 47, and a pair of second elliptical pin holes are opened at the upper and lower ends of the sixth swing arm 48;

[0076] A second pin 17 is fixedly provided at the middle part of the second connecting rod 16, and a fourth pin 44 is fixedly provided at the middle part of the fourth connecting rod 43 located at the bottom. The outer ends of the second pin 17 and the fourth pin 44 are respectively slidably engaged in a pair of second elliptical pin holes. Under the limiting action of the second pin 17, the fourth pin 44 and the pair of second elliptical pin holes, the sixth swing arm 48 can be driven to swing back and forth along the fourth connecting shaft 47, and the fourth connecting rod 43 located at the bottom can be driven to swing back and forth.

[0077] Specifically, the working principle and operation method of the present invention are as follows:

[0078] Step 1: Under the driving action of the servo motor 19, the motor shaft of the servo motor 19 drives the limit turntable 20 to rotate synchronously, and under the limiting action formed by the limit pin shaft 21 and the elliptical limit pin hole, the reciprocating swing arm 18, the second atomizing tube 13 at the rearmost side and its corresponding second swing arm 15 are driven to swing back and forth, and then the second connecting rod 16 and the joint articulation of the plurality of second swing arms 15 are driven to synchronously swing back and forth;

[0079] Step 2: The second notched gear 25 meshes to drive the adjacent double-sided gear 24 to reciprocate. Under the mutual meshing and rotation of a pair of double-sided gears 24, the other double-sided gear 24 meshes to drive the first notched gear 22, the first swing arm 9 on the far right, and the first atomizing tube 7 to reciprocate left and right. Then, through the joint articulation of the first connecting rod 10 and a plurality of first swing arms 9, the remaining first atomizing tubes 7 are driven to reciprocate left and right synchronously.

[0080] Step 3: The first swing arm 9 located in the middle drives the extended swing arm 11 to swing back and forth synchronously, and under the limiting action of the first pin shaft 12, the third pin shaft 37 and a pair of first elliptical pin holes, drives the fifth swing arm 46 to swing back and forth along the third connecting shaft 45, and drives the third connecting rod 36 located at the bottom to swing back and forth;

[0081] Under the joint articulation of the fifth connecting rod 34 and the first L-shaped swing arms 33, and under the joint articulation of the third connecting rod 36 and the corresponding first L-shaped swing arms 33 and the third swing arms 35, the first dust removal plates 30 and the first connecting shafts 32 are driven to swing back and forth synchronously.

[0082] Step 4: Under the limiting action of the second pin shaft 17, the fourth pin shaft 44 and the pair of second elliptical pin holes, the sixth swing arm 48 is driven to swing back and forth along the fourth connecting shaft 47, and the fourth connecting rod 43 located at the bottom is driven to swing back and forth;

[0083] Under the joint articulation of the sixth connecting rod 41 and the plurality of second L-shaped swing arms 40, and under the joint articulation of the fourth connecting rod 43 and the corresponding second L-shaped swing arms 40 and the plurality of fourth swing arms 42, the plurality of second dust removal plates 38 and the plurality of pairs of second connecting shafts 39 are driven to swing back and forth synchronously;

[0084] Step 5: Under the boosting effect of the atomizing booster pump 26, the ammonia liquid enters the boosting water pipe 27 after being boosted by the atomizing booster pump 26, and then enters the first atomizing pipe 7 along the first telescopic hose 28 and forms atomized ammonia liquid sprayed upward through the first atomizing nozzle 8. At the same time, the ammonia liquid enters the second atomizing pipe 13 along the second telescopic hose 29 and forms atomized ammonia liquid sprayed downward through the second atomizing nozzle 14;

[0085] Step 6: The flue gas enters the bottom of the tower body 2 along the smoke inlet pipe 4 and flows upward. The nitrogen oxides in the flue gas react chemically with the atomized ammonia liquid to generate nitrogen and water, thereby achieving the purpose of flue gas denitrification. A large amount of dust in the flue gas is dissolved in the atomized ammonia liquid and water, thereby achieving the purpose of initial dust reduction in the flue gas.

[0086] The flue gas then passes through the elliptical through holes on the first dust removal plates 30 and the second dust removal plates 38, and a small amount of dust in the flue gas is adsorbed on the first dust removal plates 30 and the second dust removal plates 38, so as to achieve the purpose of secondary dust reduction of the flue gas. The harmful gas in the flue gas is adsorbed in the activated carbon adsorption block 31, so as to achieve the purpose of flue gas purification. The flue gas then goes upward into the conical tower cover 3 and is discharged to the next process along the exhaust pipe 5.

[0087] The present invention can make ammonia water and nitrogen oxides fully contact and react to ensure a relatively high nitrogen oxide removal rate; at the same time, the present invention can adsorb dust and effectively improve the dust removal effect of flue gas.

[0088] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flue gas denitrification device, Features: The tower comprises a bottom plate (1), a tower body (2) is fixedly arranged on the top surface of the bottom plate (1), a conical tower cover (3) is fixedly arranged on the top of the tower body (2), a smoke inlet pipe (4) is installed at the middle and lower part of the left side of the tower body (2), a smoke exhaust pipe (5) is installed on the top of the conical tower cover (3), and a sewage discharge pipe (6) is installed at the bottom of the right side of the tower body (2); A plurality of first atomizing tubes (7) equidistantly distributed on the left and right are provided in the middle of the tower body (2), the front and rear ends of each of the first atomizing tubes (7) are rotated to penetrate the inner wall of the tower body (2) and extend to the outside, and a plurality of first atomizing nozzles (8) equidistantly distributed are installed on the top surface of each first atomizing tube (7); A plurality of second atomizing tubes (13) equidistantly distributed in the front and rear are provided in the middle of the tower body (2), the left and right ends of each second atomizing tube (13) are rotated to penetrate the inner wall of the tower body (2) and extend to the outside, and a plurality of second atomizing nozzles (14) equidistantly distributed are installed on the bottom surface of each second atomizing tube (13); The plurality of first atomizing tubes (7) and the plurality of second atomizing tubes (13) are distributed in a grid pattern, the plurality of second atomizing tubes (13) are located above the plurality of first atomizing tubes (7), and the plurality of first atomizing nozzles (8) and the plurality of second atomizing nozzles (14) are oriented vertically and distributed in an alternating manner; A plurality of first dust removal plates (30) are arranged side by side in a left-right manner in the middle and upper part of the tower body (2); a first connecting shaft (32) is fixedly provided at the front and rear ends of each first dust removal plate (30); and the outer end of each first connecting shaft (32) is rotatably inserted through the inner wall of the tower body (2); A plurality of second dust removal plates (38) are arranged in a front-to-back arrangement in the middle upper portion of the tower body (2); a second connecting shaft (39) is fixedly provided at the left and right ends of each second dust removal plate (38); and the outer end of each second connecting shaft (39) is rotatably inserted through the inner wall of the tower body (2); A plurality of layers of first dust removal plates (30) and a plurality of layers of second dust removal plates (38) are alternately interspersed, and a plurality of elliptical through holes are provided on the first dust removal plates (30) and the second dust removal plates (38), and a hollow activated carbon adsorption block (31) is fixedly disposed inside each of the elliptical through holes; An atomizing booster pump (26) is fixedly provided at the bottom of the front face of the tower body (2); a through-distributed booster water pipe (27) is fixedly provided at the water outlet of the atomizing booster pump (26); the booster water pipe (27) is continuously bent and first extends upward to the left side of the front face of the tower body (2), and then extends around the left side of the tower body (2) to the back face of the tower body (2); A first telescopic hose (28) is fixedly disposed at the rear end of each first atomizing tube (7) and is connected to the pressurized water pipe (27); a second telescopic hose (29) is fixedly disposed at the left end of each second atomizing tube (13) and is connected to the pressurized water pipe (27); and each second telescopic hose (29) is connected to the pressurized water pipe (27); A first swing arm (9) vertically distributed downward is fixedly provided at the front end of each of the first atomizing tubes (7), and the bottom ends of the plurality of first swing arms (9) are movably hinged to the same first connecting rod (10); A second swing arm (15) extending vertically upward is fixedly provided at the right end of each second atomizing tube (13), and the top ends of the plurality of second swing arms (15) are movably hinged to the same second connecting rod (16); A pair of vertically distributed linkage shafts (23) are rotatably inserted on the right side of the front face and the side of the right side of the tower body (2), and the outer end of each linkage shaft (23) is sleeved with a concentrically fixed double-sided gear (24), the inner side of the double-sided gear (24) is in the shape of a bevel gear, and the pair of double-sided gears (24) are meshed and connected with each other; A first notched gear (22) is fixedly provided at the top end of the first swing arm (9) located at the far right, and the first notched gear (22) is meshingly connected with an adjacent double-sided gear (24); a second notched gear (25) is fixedly provided at the bottom end of the second swing arm (15) located at the far front, and the second notched gear (25) is meshingly connected with an adjacent double-sided gear (24); A circular through hole is provided on the right side of the tower body (2), a servo motor (19) with an output end facing outward is fixedly arranged inside the circular through hole, a concentrically fixed limit rotating disk (20) is sleeved on the motor shaft end of the servo motor (19), and an eccentrically distributed limit pin (21) is fixedly arranged on the outer side surface of the limit rotating disk (20); The right end of the second atomizing tube (13) located at the rearmost side extends outward and is fixed with a reciprocating swing arm (18) vertically distributed downward, and an elliptical limit pin hole is formed at the bottom end of the reciprocating swing arm (18), and the outer end of the limit pin shaft (21) is slidably engaged in the elliptical limit pin hole; The front ends of the plurality of first connecting shafts (32) located at the left front are all fixedly provided with a first L-shaped swing arm (33), the left ends of the plurality of first L-shaped swing arms (33) are movably hinged to the same fifth connecting rod (34), the front ends of the remaining first connecting shafts (32) located at the front are all fixedly provided with a third swing arm (35) vertically distributed downward, the bottom end of the first L-shaped swing arm (33) and the bottom ends of the plurality of third swing arms (35) on the same horizontal plane are movably hinged to the same third connecting rod (36); The right ends of the plurality of second connecting shafts (39) located at the right front are all fixedly provided with second L-shaped swing arms (40), the front ends of the plurality of second L-shaped swing arms (40) are movably hinged to the same sixth connecting rod (41), the right ends of the remaining second connecting shafts (39) located at the right side are all fixedly provided with fourth swing arms (42) vertically distributed downward, the bottom ends of the second L-shaped swing arms (40) and the bottom ends of the plurality of fourth swing arms (42) on the same horizontal plane are movably hinged to the same fourth connecting rod (43); A third connecting shaft (45) is rotatably inserted in the middle of the front face of the tower body (2); a fifth swing arm (46) is fixedly disposed vertically at the outer end of the third connecting shaft (45); and a pair of first elliptical pin holes are formed at the upper and lower ends of the fifth swing arm (46); An extended swing arm (11) is fixedly provided at the top end of the first swing arm (9) located in the middle, a first pin shaft (12) is fixedly provided at the top end of the extended swing arm (11), a third pin shaft (37) is fixedly provided at the middle of the third connecting rod (36) located at the bottom, and the outer ends of the first pin shaft (12) and the third pin shaft (37) are respectively slidably engaged in a pair of first elliptical pin holes; A fourth connecting shaft (47) is rotatably inserted in the middle of the right side of the tower body (2); a sixth swing arm (48) vertically distributed is fixedly provided at the outer end of the fourth connecting shaft (47); a pair of second elliptical pin holes are provided at the upper and lower ends of the sixth swing arm (48); A second pin shaft (17) is fixedly provided at the middle of the second connecting rod (16), and a fourth pin shaft (44) is fixedly provided at the middle of the fourth connecting rod (43) located at the bottom. The outer ends of the second pin shaft (17) and the fourth pin shaft (44) are respectively slidably engaged in a pair of second elliptical pin holes.

2. A denitration method for a flue gas denitration device according to claim 1, It is characterized in that The following steps are involved: Step 1: Under the driving action of the servo motor (19), the motor shaft of the servo motor (19) drives the limit turntable (20) to rotate synchronously, and under the limiting action formed by the limit pin shaft (21) and the elliptical limit pin hole, the reciprocating swing arm (18), the second atomizing tube (13) at the rearmost side and its corresponding second swing arm (15) are driven to swing back and forth reciprocatingly, and then through the joint articulation of the second connecting rod (16) and the plurality of second swing arms (15), the remaining second atomizing tubes (13) are driven to swing back and forth synchronously; Step 2: The second notched gear (25) meshes to drive the adjacent double-sided gear (24) to reciprocate. Under the mutual meshing and rotation of the pair of double-sided gears (24), the other double-sided gear (24) meshes to drive the first notched gear (22), the first swing arm (9) on the far right, and the first atomizing tube (7) to swing back and forth. Then, through the joint articulation of the first connecting rod (10) and the plurality of first swing arms (9), the remaining first atomizing tubes (7) are driven to swing back and forth synchronously. Step 3: The first swing arm (9) located in the middle portion drives the extended swing arm (11) to swing back and forth synchronously, and under the limiting action of the first pin shaft (12), the third pin shaft (37) and the pair of first elliptical pin holes, drives the fifth swing arm (46) to swing back and forth along the third connecting shaft (45), and drives the third connecting rod (36) located at the bottom to swing back and forth; Under the joint hinge action of the fifth connecting rod (34) and the plurality of first L-shaped swing arms (33), and under the joint hinge action of the third connecting rod (36) and the corresponding first L-shaped swing arms (33) and the plurality of third swing arms (35), the plurality of first dust removal plates (30) and the plurality of pairs of first connecting shafts (32) are driven to synchronously swing back and forth left and right; Step 4: under the limiting action of the second pin shaft (17), the fourth pin shaft (44) and the pair of second elliptical pin holes, the sixth swing arm (48) is driven to swing back and forth along the fourth connecting shaft (47), and the fourth connecting rod (43) located at the bottom is driven to swing back and forth; Under the joint hinge action of the sixth connecting rod (41) and the plurality of second L-shaped swing arms (40), and under the joint hinge action of the fourth connecting rod (43) and the corresponding second L-shaped swing arms (40) and the plurality of fourth swing arms (42), the plurality of second dust removal plates (38) and the plurality of pairs of second connecting shafts (39) are driven to synchronously swing back and forth; Step 5, under the boosting effect of the atomizing booster pump (26), the ammonia liquid is pressurized by the atomizing booster pump (26) and enters the boosting water pipe (27), and then the ammonia liquid enters the first atomizing pipe (7) along the first telescopic hose (28) and passes through the first atomizing nozzle (8) to form an atomized ammonia liquid sprayed upward, and at the same time, the ammonia liquid enters the second atomizing pipe (13) along the second telescopic hose (29) and passes through the second atomizing nozzle (14) to form an atomized ammonia liquid sprayed downward; Step 6: The flue gas enters the bottom of the tower body (2) along the smoke inlet pipe (4) and flows upward. The nitrogen oxides in the flue gas react chemically with the atomized ammonia liquid to generate nitrogen and water, thereby achieving the purpose of flue gas denitrification. A large amount of dust in the flue gas is dissolved in the atomized ammonia liquid and water, thereby achieving the purpose of initial dust reduction in the flue gas. The flue gas then passes through the elliptical through holes on the first dust removal plates (30) and the second dust removal plates (38), and a small amount of dust in the flue gas is adsorbed on the first dust removal plates (30) and the second dust removal plates (38), thereby achieving the purpose of secondary dust reduction of the flue gas. The harmful gases in the flue gas are adsorbed in the activated carbon adsorption blocks (31), thereby achieving the purpose of flue gas purification. The flue gas then enters the conical tower cover (3) upwards and is discharged along the exhaust pipe (5) to the next process.

Images