An integrated treatment device for boiler flue gas desulfurization and denitrification

Abstract

The invention discloses an integrated desulfurization and denitrification treatment device for boiler flue gas, which belongs to the field of boiler flue gas purification. The device comprises an air intake lower casing, a desulfurization and denitrification pipe, an exhaust casing ventilation aperture adjustment mechanism and a desulfurization and denitrification mechanism. The desulfurization and denitrification pipe is mounted on the air intake lower casing, a desulfurization and denitrification channel is arranged inside the desulfurization and denitrification pipe, the exhaust casing is mounted on the desulfurization and denitrification pipe, and the ventilation aperture adjustment mechanism is mounted on the desulfurization and denitrification pipe and is used to adjust the cross-sectional size of the desulfurization and denitrification channel; the desulfurization and denitrification mechanism is used to perform desulfurization and denitrification treatment on the flue gas inside the desulfurization and denitrification channel; the device can realize the reduction of the desulfurization and denitrification treatment liquid which is not effectively contacted with the flue gas during the desulfurization and denitrification process and is directly mixed with the waste liquid inside the air intake lower casing, thereby reducing the waste of the desulfurization and denitrification treatment liquid during the desulfurization and denitrification process.

Description

Technical Field

[0001] The present invention relates to the field of boiler flue gas purification, and more specifically to an integrated desulfurization and denitrification treatment device for boiler flue gas. Background Art

[0002] In today's industrial production, boilers are widely used in various fields. However, the large amount of flue gas generated during the combustion process has caused serious pollution to the environment. In order to reduce this pollution, desulfurization and denitrification of boiler flue gas has become an important task in the field of environmental protection.

[0003] For example, a Chinese patent with the authorization announcement number CN116116158B discloses a flue gas desulfurization and denitrification device for an incinerator, which is connected to an air inlet pipe on one side of a tower base, a cyclone mechanism is fixedly installed in the inner cavity of the tower base, a liquid inlet pipe is connected to one side of the tower body, and the inner cavity of the liquid inlet pipe is connected to a spray mechanism, and a guiding mechanism is provided at the bottom of the spray mechanism, which is used to evenly distribute the flue gas into the tower body through the cyclone mechanism and spray the spray liquid (treatment liquid) through the spray mechanism for exchange and purification;

[0004] However, the internal space dimensions of existing boiler flue gas treatment technologies are usually fixed, and the cross-sectional dimensions of the treatment channel cannot be flexibly adjusted according to the flue gas intake volume. When faced with flue gases with different intake volumes, when faced with a smaller flue gas intake volume, the treatment liquid still needs to be evenly sprayed in the desulfurization and denitrification treatment area (desulfurization and denitrification channel). At this time, since there is a smoke-free area where no flue gas is distributed inside the desulfurization and denitrification treatment area, the treatment liquid sprayed in this area does not effectively contact the flue gas and directly falls until it contacts the waste liquid at the bottom of the device and mixes together, resulting in waste of desulfurization and denitrification treatment liquid during the desulfurization and denitrification process. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide an integrated desulfurization and denitrification treatment device for boiler flue gas, which can reduce the desulfurization and denitrification treatment liquid that is not effectively in contact with the flue gas during the desulfurization and denitrification process and is directly mixed with the waste liquid inside the lower air intake casing, thereby reducing the waste of desulfurization and denitrification treatment liquid during the desulfurization and denitrification process.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A boiler flue gas desulfurization and denitrification integrated treatment device, comprising:

[0010] An air intake lower casing, to which a boiler smoke intake pipe is fixedly connected, and the boiler smoke intake pipe is in communication with the air intake lower casing;

[0011] A desulfurization and denitration pipe is mounted on the air intake lower casing, a desulfurization and denitration channel is arranged inside the desulfurization and denitration pipe, one end of the desulfurization and denitration channel is connected to the air intake lower casing, and the flue gas inside the air intake lower casing will enter the desulfurization and denitration channel;

[0012] An exhaust shell is assembled on the desulfurization and denitration pipe, and the other end of the desulfurization and denitration channel is connected to the exhaust shell;

[0013] A ventilation aperture adjustment mechanism, mounted on the desulfurization and denitration pipe, for adjusting the cross-sectional size of the desulfurization and denitration channel;

[0014] The desulfurization and denitrification mechanism is used for desulfurization and denitrification treatment of the flue gas inside the desulfurization and denitrification channel.

[0015] Furthermore, the ventilation aperture adjustment mechanism includes six gas blocking blocks in a ring array, the side of the gas blocking block close to the axis of the desulfurization and denitrification channel is the first side, the side of the gas blocking block adjacent to the first side in the clockwise direction is the second side, the first side of the gas blocking block is slidably connected to the second side of the next gas blocking block in the clockwise direction, and the space between the plurality of the first side is the effective treatment area;

[0016] The ventilation aperture adjustment mechanism also includes a plurality of horizontal moving mechanisms fixedly connected to the inside of the desulfurization and denitration pipes, wherein the plurality of horizontal moving mechanisms are respectively connected to a plurality of gas blocking blocks, and the gas blocking blocks can slide horizontally along the moving direction of the horizontal moving mechanisms;

[0017] Two mounting plates respectively located at the upper and lower ends of the gas blocking block are fixedly connected inside the desulfurization and denitration channel, a vent hole is opened at the center of the mounting plate, and the gas blocking block is slidably connected between the two mounting plates.

[0018] Furthermore, a plurality of horizontally arranged slide bars are fixedly connected to the first side surface, a slide rail is provided on the second side surface, and the slide bar on the air blocking block is slidably connected to the inside of the slide rail of the next air blocking block in the clockwise direction.

[0019] Furthermore, a second equipment room and a third equipment room are sequentially opened inside the gas blocking block from bottom to top, and the desulfurization and denitrification mechanism includes two treatment liquid conveying mechanisms respectively fixedly connected to the second equipment room and the third equipment room, and the output end of the treatment liquid conveying mechanism is connected to a liquid outlet nozzle group installed on the first side through a second conduit.

[0020] Furthermore, it also includes a combustion mechanism, a first equipment chamber is opened inside the gas blocking block and at the lower side of the second equipment chamber, the combustion mechanism includes a burner body fixedly connected to the inside of the first equipment chamber, and the output end of the burner body is fixedly connected to a flame nozzle group installed on the first side through a first conduit.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] This scheme adjusts the cross-sectional size of the desulfurization and denitrification channel by setting a ventilation aperture adjustment mechanism, so that the internal space of the desulfurization and denitrification channel can be adapted to the flue gas intake volume, so that the flue gas entering the desulfurization and denitrification channel can be fully filled in the desulfurization and denitrification channel, thereby reducing the desulfurization and denitrification treatment liquid that is not effectively in contact with the flue gas during the desulfurization and denitrification process and directly mixes with the waste liquid inside the lower air intake casing, thereby reducing the waste of desulfurization and denitrification treatment liquid during the desulfurization and denitrification process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 It is a schematic diagram of the partial cutaway structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall cutaway structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention from top view;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the local structure;

[0029] Figure 6 It is a structural schematic diagram of the gas blocking block of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-section structure of the gas blocking block of the present invention;

[0031] Figure 8 For the present invention Figure 6 A partial enlarged view of point A in the middle.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Intake lower casing; 2. Desulfurization and denitrification pipes; 3. Exhaust casing; 4. Boiler flue gas intake pipe; 5. Waste liquid discharge pipe; 6. Driving motor; 7. Gear; 8. Gear ring; 9. Air turbulence mechanism; 10. Mounting plate; 11. Air vent; 12. Air blocking block; 13. Horizontal movement mechanism; 14. Guide groove; 15. Guide rod; 16. First side; 17. Second side; 18. Slide; 19. Slide rail; 20. Burner nozzle; 21. Treatment agent nozzle; 22. First equipment room; 23. Second equipment room; 24. Third equipment room; 25. Burner body; 26. First conduit; 27. Air guide box; 28. Treatment liquid delivery mechanism; 29. ​​Automatic reset member; 30. Second conduit; 31. Liquid guide box; 32. Middle slide; 33. Side slide; 34. Fixed frame. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0035] Example:

[0036] See also Figure 1-8 , a boiler flue gas desulfurization and denitrification integrated treatment device, comprising:

[0037] The air intake lower casing 1 is fixedly connected with a boiler flue gas intake pipe 4, which is in communication with the air intake lower casing 1 and can input the flue gas discharged from the boiler into the interior of the air intake lower casing 1. The lower end of the outer side of the air intake lower casing 1 is fixedly connected with a waste liquid discharge pipe 5. When the treatment liquid desulfurizes and denitrates the flue gas, the waste liquid formed can be discharged through the waste liquid discharge pipe 5.

[0038] The desulfurization and denitration pipe 2 is mounted on the air intake lower casing 1. A desulfurization and denitration channel is provided inside the desulfurization and denitration pipe 2. One end of the desulfurization and denitration channel is connected to the air intake lower casing 1. The flue gas inside the air intake lower casing 1 will enter the desulfurization and denitration channel.

[0039] The exhaust shell 3 is assembled on the desulfurization and denitrification pipe 2. The other end of the desulfurization and denitrification channel is connected to the exhaust shell 3. The flue gas inside the desulfurization and denitrification channel will be discharged through the exhaust shell 3. The exhaust shell 3 can be connected to the subsequent flue gas treatment equipment to further treat the treated flue gas through the flue gas treatment equipment.

[0040] The ventilation aperture adjustment mechanism is mounted on the desulfurization and denitration pipe 2 and is used to adjust the cross-sectional size of the desulfurization and denitration channel so that the cross-sectional size of the desulfurization and denitration channel is proportional to the flue gas intake amount of the desulfurization and denitration channel, that is, the more flue gas is input to the desulfurization and denitration channel through the boiler flue gas intake pipe 4, the larger the cross-sectional size of the desulfurization and denitration channel is, and the smaller the flue gas input to the desulfurization and denitration channel through the boiler flue gas intake pipe 4, the smaller the cross-sectional size of the desulfurization and denitration channel is, so that the flue gas entering the desulfurization and denitration channel can be fully filled in the desulfurization and denitration channel;

[0041] The desulfurization and denitrification mechanism is used to desulfurize and denitrify the flue gas inside the desulfurization and denitrification channel;

[0042] At this time, after the boiler flue gas intake pipe 4 intakes air into the lower air intake casing 1, the flue gas inside the lower air intake casing 1 will enter the desulfurization and denitrification channel. At this time, the cross-sectional size of the desulfurization and denitrification channel is adjusted by the ventilation aperture adjustment mechanism, so that the cross-sectional size of the desulfurization and denitrification channel is proportional to the flue gas intake volume of the desulfurization and denitrification channel, so that the flue gas can be fully filled in the desulfurization and denitrification channel, and the empty area where no flue gas is distributed in the desulfurization and denitrification channel is reduced. Then, the treatment liquid is input into the desulfurization and denitrification channel through the desulfurization and denitrification mechanism, and the flue gas can be desulfurized and denitrified by the desulfurization and denitrification treatment liquid. At this time, since all the treatment liquids can contact with the flue gas inside the desulfurization and denitrification channel, the waste of treatment liquid caused by the desulfurization and denitrification treatment liquid not effectively contacting the flue gas and directly mixing with the waste liquid inside the lower air intake casing 1 can be reduced.

[0043] like Figure 3-5 As shown, the ventilation aperture adjustment mechanism includes six gas blocking blocks 12 in a circular array, the side of the gas blocking block 12 close to the axis of the desulfurization and denitrification channel is a first side 16, and the side on the gas blocking block 12 and adjacent to the first side 16 in the clockwise direction is a second side 17. The first side 16 of the gas blocking block 12 and the second side 17 of the next gas blocking block 12 in the clockwise direction are slidably connected, and the space between the multiple first side surfaces 16 is an effective treatment area, and the flue gas contacts the treatment liquid inside the effective treatment area for desulfurization and denitrification treatment. At this time, when the multiple gas blocking blocks 12 move horizontally synchronously, the space size of the effective treatment area will be adjusted, so that the cross-sectional size of the desulfurization and denitrification channel can be effectively adjusted.

[0044] like Figure 2 and Figure 4 As shown, in order to drive the gas blocking block 12 to move, the ventilation aperture adjustment mechanism also includes a plurality of horizontal moving mechanisms 13 fixedly connected to the inside of the desulfurization and denitration pipe 2, and the plurality of horizontal moving mechanisms 13 are respectively connected to the plurality of gas blocking blocks 12, and the gas blocking blocks 12 can slide horizontally along the moving direction of the horizontal moving mechanism 13. In the technical solution, the horizontal moving mechanism 13 can be a linear moving device, that is, an electric push rod;

[0045] And, if Figure 2-3 As shown, two mounting plates 10 located at the upper and lower ends of a gas blocking block 12 are fixedly connected inside the desulfurization and denitrification channel, and a vent hole 11 is provided at the center of the mounting plate 10 for the circulation of flue gas. The gas blocking block 12 is slidably connected between the two mounting plates 10, and a guide groove 14 is provided on the mounting plate 10. Guide rods 15 are fixedly connected at the upper and lower ends of the gas blocking block 12, and the guide rods 15 are slidably connected inside the guide groove 14, so that the gas blocking block 12 can be slidably guided, thereby improving the stability of the gas blocking block 12 when sliding.

[0046] At the same time, if Figure 2 and Figure 6 As shown, a plurality of horizontally arranged slide bars 18 are fixedly connected to the first side surface 16, and a slide rail 19 is provided on the second side surface 17. The slide bar 18 on the air blocking block 12 is slidably connected to the inside of the slide rail 19 of the next air blocking block 12 in the clockwise direction. At this time, the sliding stability between two adjacent air blocking blocks 12 can be effectively improved through the sliding of the slide bar 18 and the slide rail 19.

[0047] Among them, Figure 6-7 As shown, the interior of the gas blocking block 12 is provided with a second equipment chamber 23 and a third equipment chamber 24 from bottom to top, and the desulfurization and denitrification mechanism includes two treatment liquid conveying mechanisms 28 respectively fixedly connected to the second equipment chamber 23 and the third equipment chamber 24, and the two treatment liquid conveying mechanisms 28 are respectively connected to two treatment liquid input pipes, into which desulfurization treatment liquid and desulfurization treatment liquid can be respectively input, and the output end of the treatment liquid conveying mechanism 28 is connected to a liquid outlet nozzle group installed on the first side 16 through a second conduit 30. At this time, by starting the treatment liquid conveying mechanism 28, the treatment liquid can be sprayed into the effective treatment area through the liquid outlet nozzle group, so that the treatment liquid enters the effective treatment area and contacts the flue gas to carry out desulfurization and denitrification treatment.

[0048] Here, the treatment liquid may be ammonia water, magnesium oxide solution, calcium oxide solution, hydrogen peroxide or papermaking white mud slurry.

[0049] Here, in order to make the treatment liquid spray more evenly, the liquid outlet nozzle group includes a plurality of vertically arranged liquid guide boxes 31, and a plurality of vertically arranged treatment agent nozzles 21 are fixedly connected to the plurality of liquid guide boxes 31. The liquid guide boxes 31 and the treatment liquid delivery mechanism 28 are connected via a second conduit 30. In order to allow all the treatment liquid discharged from the treatment agent nozzles 21 to enter the effective treatment area, the gas blocking block 12 is also equipped with a horizontal moving group connected to the plurality of liquid guide boxes 31, so that the liquid guide box 31 moves from the area of ​​the first side 16 blocked by the second side 17 to the area not blocked by the second side 17, so that the treatment agent nozzles 21 on the liquid guide boxes 31 can directly discharge liquid into the effective treatment area. At the same time, the influence of the treatment agent nozzles 21 on the movement of the gas blocking block 12 can be reduced.

[0050] Here, the horizontal moving group can be an electric push rod fixedly connected to the first side surface 16 and arranged horizontally, or it can be Figure 5-8 As shown, the horizontal moving group includes an edge slide 33, a fixed frame 34 and a plurality of intermediate slides 32. The fixed frame 34 is fixedly connected to one end of the slide bar 18 close to the slide rail 19. It should be noted that the slide rail 19 here refers to the slide rail 19 located on the same air blocking block 12 as the slide bar 18. The edge slide 33 and the plurality of intermediate slides 32 are horizontally slidably connected to the outside of the slide bar 18, and the edge slide 33 is located on the side of the plurality of intermediate slides 32 away from the fixed frame 34. The plurality of liquid guide boxes 31 are respectively fixedly connected to the plurality of intermediate slides 32. When the intermediate slides 32 move, the liquid guide boxes can be driven When the box 31 moves, an automatic reset component 29 such as a return spring or arc spring steel is fixedly connected between two adjacent middle slides 32, between an adjacent middle slide 32 and a side slide 33, and between an adjacent middle slide 32 and a fixed frame 34. At this time, when another air blocking block 12 moves toward the direction close to the fixed frame 34, it will squeeze the side slide 33, so that the side slide 33 squeezes multiple liquid guiding boxes 31 through the automatic reset component 29, driving the liquid guiding boxes 31 to move, and under the elastic action of the liquid guiding boxes 31, the multiple liquid guiding boxes 31 are evenly distributed horizontally after the movement is completed.

[0051] In order to further improve the desulfurization effect, the boiler flue gas desulfurization and denitrification integrated treatment device also includes a combustion mechanism, which is used to heat the flue gas entering the desulfurization and denitrification channel so that the flue gas can reach a sufficient reaction temperature;

[0052] Please refer to Figure 6-8As shown, a first equipment chamber 22 is opened inside the gas blocking block 12 and at the lower side of the second equipment chamber 23. The combustion mechanism includes a burner body 25 fixedly connected to the inside of the first equipment chamber 22. The burner body 25 can be connected to the gas pipeline. The output end of the burner body 25 is fixedly connected to a flame nozzle group installed on the first side 16 through a first conduit 26. At this time, by starting the burner body 25, gas can be delivered to the flame nozzle group, and then the flame is ignited by the flame nozzle group to form a flame that enters the effective treatment area and contacts the flue gas, thereby reducing gas waste.

[0053] Similarly, in order to make the flame distribution more uniform, the flame nozzle group includes a plurality of vertically arranged air guide boxes 27, and a plurality of vertically arranged burner nozzles 20 are fixedly connected to the plurality of air guide boxes 27. The air guide boxes 27 and the burner body 25 are connected via a first conduit 26. The gas blocking block 12 is also equipped with a horizontal moving group connected to the plurality of air guide boxes 27, so that the air guide box 27 moves from the area of ​​the first side 16 blocked by the second side 17 to the area not blocked by the second side 17, so that the burner nozzle 20 on the air guide box 27 can directly spray the flame into the effective treatment area. At the same time, the influence of the burner nozzle 20 on the movement of the gas blocking block 12 can be reduced.

[0054] Here, the horizontal moving group can be an electric push rod fixedly connected to the first side surface 16 and arranged horizontally, or it can be Figure 5-8 As shown, the horizontal moving group includes an edge slide 33, a fixed frame 34 and a plurality of intermediate slides 32. The fixed frame 34 is fixedly connected to one end of the slide bar 18 close to the slide rail 19. It should be noted that the slide rail 19 here refers to the slide rail 19 located on the same air blocking block 12 as the slide bar 18. The edge slide 33 and the plurality of intermediate slides 32 are horizontally slidably connected to the outside of the slide bar 18, and the edge slide 33 is located on the side of the plurality of intermediate slides 32 away from the fixed frame 34. The plurality of air guide boxes 27 are respectively fixedly connected to the plurality of intermediate slides 32. When the intermediate slides 32 move, the air guide boxes 27 can be driven When the box 27 moves, an automatic reset component 29 such as a return spring or an arc spring steel is fixedly connected between two adjacent middle slides 32, between an adjacent middle slide 32 and a side slide 33, and between an adjacent middle slide 32 and a fixed frame 34. At this time, when another air blocking block 12 moves toward the direction close to the fixed frame 34, it will squeeze the side slide 33, so that the side slide 33 squeezes multiple air guide boxes 27 through the automatic reset component 29, driving the air guide boxes 27 to move, and under the elastic action of the air guide boxes 27, the multiple air guide boxes 27 are evenly distributed horizontally after the movement is completed.

[0055] At the same time, if Figure 1-3As shown, in order to make the treatment liquid and the flame contact with the flue gas more evenly, the desulfurization and denitrification pipe 2 is rotatably connected to the upper side of the air intake lower casing 1, and the air intake lower casing 1 is also equipped with a rotating drive group connected to the desulfurization and denitrification pipe 2. At this time, the desulfurization and denitrification pipe 2 is driven to rotate by the rotating drive group, which can drive the burner nozzle 20 and the treatment agent nozzle 21 installed in the desulfurization and denitrification pipe 2 to revolve, so that the treatment liquid and flame sprayed by them can contact the flue gas more evenly.

[0056] Here, the rotary drive group includes a drive motor 6 fixedly connected to the upper side of the air intake lower casing 1, and the output end of the drive motor 6 is fixedly connected to a meshing gear 7, and the meshing gear 7 is meshingly connected to a meshing ring 8 fixedly connected to the outside of the desulfurization and denitrification pipe 2. At this time, the rotational kinetic energy can be output by starting the drive motor 6, and then the rotational kinetic energy is transmitted to the desulfurization and denitrification pipe 2 through the meshing gear 7 and the meshing ring 8, thereby driving the desulfurization and denitrification pipe 2 to rotate.

[0057] Furthermore, an air disturbance mechanism 9 may be installed inside the air intake lower casing 1 , so that the flue gas entering the air intake lower casing 1 can evenly enter various positions inside the desulfurization and denitration pipe 2 .

[0058] The working principle of the present invention is as follows: when the boiler flue gas intake pipe 4 takes air into the lower air intake casing 1, the flue gas inside the lower air intake casing 1 will enter the desulfurization and denitrification channel. At this time, the horizontal moving mechanism 13 is started to drive the gas blocking block 12 to move, and the cross-sectional size of the desulfurization and denitrification channel is adjusted, so that the cross-sectional size of the desulfurization and denitrification channel is proportional to the flue gas intake volume of the desulfurization and denitrification channel, so that the flue gas can be fully filled in the desulfurization and denitrification channel, and the empty area where no flue gas is distributed in the desulfurization and denitrification channel is reduced. Then, the treatment liquid conveying mechanism 28 is started to input the treatment liquid into the desulfurization and denitrification channel, and the flue gas can be desulfurized and denitrified by the desulfurization and denitrification treatment liquid. After the desulfurization and denitrification is completed, the flue gas can be discharged through the exhaust shell 3.

[0059] In summary, the technical solution adjusts the cross-sectional size of the desulfurization and denitrification channel by setting a ventilation aperture adjustment mechanism, so that the internal space of the desulfurization and denitrification channel can be adapted to the flue gas intake volume, so that the flue gas entering the desulfurization and denitrification channel can be fully filled in the desulfurization and denitrification channel, reducing the desulfurization and denitrification treatment liquid that does not effectively contact the flue gas during the desulfurization and denitrification process and directly mixes with the waste liquid inside the lower air intake casing 1, thereby reducing the waste of desulfurization and denitrification treatment liquid during the desulfurization and denitrification process.

[0060] The above is only a preferred specific implementation of the present invention; however, 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 solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A boiler flue gas desulfurization and denitrification integrated treatment device, characterized in that: include: An air intake lower casing (1), to which a boiler smoke intake pipe (4) is fixedly connected, and the boiler smoke intake pipe (4) and the air intake lower casing (1) are in communication; A desulfurization and denitration pipe (2) is mounted on the air intake lower casing (1), a desulfurization and denitration channel is provided inside the desulfurization and denitration pipe (2), and one end of the desulfurization and denitration channel is connected to the air intake lower casing (1); An exhaust shell (3) is mounted on the desulfurization and denitration pipe (2), and the other end of the desulfurization and denitration channel is connected to the exhaust shell (3); A ventilation aperture adjustment mechanism, mounted on the desulfurization and denitration pipe (2), for adjusting the cross-sectional dimensions of the desulfurization and denitration channel; The desulfurization and denitrification mechanism is used to desulfurize and denitrify the flue gas inside the desulfurization and denitrification channel; The ventilation aperture adjustment mechanism comprises six gas blocking blocks (12) in a ring array, the side of the gas blocking block (12) close to the axis of the desulfurization and denitration channel is a first side surface (16), the side of the gas blocking block (12) adjacent to the first side surface (16) in the clockwise direction is a second side surface (17), the first side surface (16) of the gas blocking block (12) is slidably connected to the second side surface (17) of the next gas blocking block (12) in the clockwise direction, and the space between the plurality of the first side surfaces (16) is an effective treatment area; The ventilation aperture adjustment mechanism further comprises a plurality of horizontal moving mechanisms (13) fixedly connected to the interior of the desulfurization and denitration pipe (2), the plurality of horizontal moving mechanisms (13) being respectively connected to a plurality of gas blocking blocks (12), and the gas blocking blocks (12) being capable of horizontally sliding along the moving direction of the horizontal moving mechanisms (13); Two mounting plates (10) are fixedly connected inside the desulfurization and denitration channel and are located at the upper and lower ends of the gas blocking block (12), respectively; a vent hole (11) is provided at the center of the mounting plate (10); and the gas blocking block (12) is slidably connected between the two mounting plates (10); The gas blocking block (12) has a second equipment room (23) and a third equipment room (24) arranged in sequence from bottom to top, the desulfurization and denitrification mechanism comprising two treatment liquid delivery mechanisms (28) respectively fixedly connected to the second equipment room (23) and the third equipment room (24), the output end of the treatment liquid delivery mechanism (28) being connected to a liquid outlet nozzle group installed on the first side surface (16) via a second conduit (30); It also includes a combustion mechanism, wherein a first equipment chamber (22) is provided inside the gas blocking block (12) and located below the second equipment chamber (23), and the combustion mechanism includes a burner body (25) fixedly connected to the inside of the first equipment chamber (22), and an output end of the burner body (25) is fixedly connected to a flame nozzle group installed on the first side surface (16) via a first conduit (26); The liquid outlet nozzle group comprises a plurality of vertically arranged liquid guide boxes (31), each of the plurality of liquid guide boxes (31) being fixedly connected to a plurality of vertically arranged treatment agent nozzles (21), the liquid guide boxes (31) being connected to the treatment liquid delivery mechanism (28) via a second conduit (30), and the gas blocking block (12) being further equipped with a horizontal moving group connected to the plurality of liquid guide boxes (31); The flame nozzle group comprises a plurality of vertically arranged air guide boxes (27), each of which is fixedly connected to a plurality of vertically arranged burner nozzles (20), the air guide boxes (27) and the burner body (25) are connected via a first conduit (26), and the gas blocking block (12) is also equipped with a horizontal moving group connected to the plurality of air guide boxes (27).

2. The integrated boiler flue gas desulfurization and denitrification treatment device according to claim 1 is characterized in that: The mounting plate (10) is provided with a guide groove (14), and the upper and lower ends of the air blocking block (12) are fixedly connected to guide rods (15), and the guide rods (15) are slidably connected inside the guide groove (14).

3. The boiler flue gas desulfurization and denitrification integrated treatment device according to claim 1 is characterized in that: A plurality of horizontally arranged sliding strips (18) are fixedly connected to the first side surface (16), a sliding rail (19) is provided on the second side surface (17), and the sliding strip (18) on the gas blocking block (12) is slidably connected to the inside of the sliding rail (19) of the next gas blocking block (12) in the clockwise direction.

4. The boiler flue gas desulfurization and denitrification integrated treatment device according to claim 3 is characterized in that: The horizontal movement group comprises an edge slide (33), a fixed frame (34) and a plurality of intermediate slides (32); the fixed frame (34) is fixedly connected to one end of the slide bar (18) close to the slide rail (19); the edge slide (33) and the plurality of intermediate slides (32) are horizontally slidably connected to the outside of the slide bar (18); the edge slide (33) is located on a side of the plurality of intermediate slides (32) away from the fixed frame (34); the plurality of liquid guide boxes (31) or the plurality of air guide boxes (27) are respectively fixedly connected to the plurality of intermediate slides (32); and an automatic reset component (29) is fixedly connected between two adjacent intermediate slides (32), between an adjacent intermediate slide (32) and an edge slide (33), and between an adjacent intermediate slide (32) and a fixed frame (34).

5. The boiler flue gas desulfurization and denitrification integrated treatment device according to claim 1 is characterized in that: The desulfurization and denitration pipe (2) is rotatably connected to the upper side of the air intake lower casing (1), and the air intake lower casing (1) is also equipped with a rotation drive group connected to the desulfurization and denitration pipe (2).

Images