A boiler flue gas denitrification device

Abstract

The utility model provides a boiler flue gas denitration device, which belongs to the technical field of flue gas denitration. A boiler flue gas denitration device is characterized in that it includes a frame, a boiler body, a denitration tower, a first smoke exhaust pipe and a second smoke exhaust pipe are arranged on the frame, a filter box is arranged between the boiler body and the denitration tower, the boiler body and the filter box are connected through the first smoke exhaust pipe, the filter box and the denitration tower are connected through the second smoke exhaust pipe, a filter screen is arranged in the filter box, a cleaning component is also arranged on the filter box, a turntable is rotatably connected in the denitration tower, an ammonia liquid storage box is fixedly connected to the lower end of the turntable, a row of nozzles are arranged at the lower end of the ammonia liquid storage box, the height of the nozzles is higher than the second smoke exhaust pipe, and a driving motor for driving the turntable to rotate is arranged at the upper end of the denitration tower. The utility model has the advantages of driving the turntable to rotate by the driving motor, so that the ammonia liquid is evenly sprayed in the denitration tower, and the denitration effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas denitration and relates to a boiler flue gas denitration device. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. During the combustion and heating process of the boiler, a large amount of flue gas will be generated. These flue gases cannot be discharged directly. It is necessary to filter and denitrate the harmful substances in the flue gas before discharging them. The current flue gas denitrification device generally removes ammonia by spraying ammonia liquid, but the spraying of ammonia liquid is relatively uneven, which affects the effect of denitrification. Secondly, after filtering particulate impurities for a period of time, the filter screen lacks a cleaning structure and is prone to clogging, which affects the flue gas pass rate and reduces the efficiency of flue gas denitrification treatment. Summary of the invention

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose a boiler flue gas denitrification device, which solves the problem that the current flue gas denitrification devices generally remove ammonia by spraying ammonia liquid, but the spraying of ammonia liquid is relatively uneven, which affects the effect of denitrification. Secondly, after the filter screen has filtered particulate impurities for a period of time, the filter screen lacks a cleaning structure and is prone to clogging, which affects the flue gas pass rate and reduces the efficiency of the flue gas denitrification treatment.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A boiler flue gas denitrification device, characterized in that it includes a frame, on which a boiler body, a denitrification tower, a first smoke exhaust pipe and a second smoke exhaust pipe are arranged, a filter box is arranged between the boiler body and the denitrification tower, the boiler body and the filter box are communicated through the first smoke exhaust pipe, the filter box and the denitrification tower are communicated through the second smoke exhaust pipe, a filter screen is arranged in the filter box, and a cleaning component is also arranged on the filter box, a turntable is rotatably connected in the denitrification tower, an ammonia liquid storage tank is fixedly connected to the lower end of the turntable, a row of nozzles is arranged at the lower end of the ammonia liquid storage tank, the height of the nozzles is higher than the second smoke exhaust pipe, a driving motor for driving the turntable to rotate is arranged at the upper end of the denitrification tower, and a third smoke exhaust pipe and a drain pipe are arranged at the lower end of the denitrification tower.

[0006] In the above-mentioned boiler flue gas denitrification device, the cleaning component includes a sliding frame, which is slidably connected to the filter box, and the sliding frame is located between the filter screen and the second smoke exhaust pipe. A first push rod motor is fixedly connected to the upper end of the frame, and a push rod of the first push rod motor is fixedly connected to the upper end of the sliding frame. A ventilation plate is fixedly connected inside the sliding frame, and a plurality of nozzles are provided on the ventilation plate. An air pump is fixedly connected to the frame, and an air pipe is provided on the air pump, and the air pipe is communicated with the ventilation plate.

[0007] In the above-mentioned boiler flue gas denitrification device, a second push rod motor is fixedly connected to the filter box, a cleaning brush is fixedly connected to the output shaft of the second push rod motor, and the cleaning brush is located between the first smoke exhaust pipe and the filter screen.

[0008] In the above-mentioned boiler flue gas denitration device, a collecting hopper is provided at the lower end of the filter box.

[0009] In the above-mentioned boiler flue gas denitration device, a transparent observation window is provided on the filter box.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The turntable is driven by a driving motor to rotate, so that the ammonia liquid is evenly sprayed in the denitrification tower, and the denitrification effect is better; the cleaning brush and nozzle are used to clean the filter to prevent the filter from being blocked and affecting the flue gas passing rate, thereby improving the efficiency of flue gas denitrification treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure,

[0014] 2. Frame; 3. Boiler body; 4. Denitrification tower; 5. First smoke exhaust pipe; 6. Second smoke exhaust pipe; 7. Filter box; 8. Filter screen; 9. Turntable; 10. Ammonia liquid storage tank; 11. Nozzle; 12. Drive motor; 13. Third smoke exhaust pipe; 14. Drain pipe; 15. Sliding frame; 16. First push rod motor; 17. Ventilation plate; 18. Nozzle; 19. Air pump; 20. Air pipe; 21. Second push rod motor; 22. Cleaning brush; 23. Collecting bucket. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1 As shown,

[0017] A boiler flue gas denitrification device, characterized in that it includes a frame 2, on which a boiler body 3, a denitrification tower 4, a first smoke exhaust pipe 5 and a second smoke exhaust pipe 6 are arranged, a filter box 7 is arranged between the boiler body 3 and the denitrification tower 4, the boiler body 3 and the filter box 7 are communicated through the first smoke exhaust pipe 5, the filter box 7 and the denitrification tower 4 are communicated through the second smoke exhaust pipe 6, a filter screen 8 is arranged in the filter box 7, and a cleaning component is also arranged on the filter box 7, a turntable 9 is rotatably connected in the denitrification tower 4, an ammonia liquid storage tank 10 is fixedly connected to the lower end of the turntable 9, a row of nozzles 11 are arranged at the lower end of the ammonia liquid storage tank 10, and the height of the nozzles 11 is higher than the second smoke exhaust pipe 6, a driving motor 12 for driving the turntable 9 to rotate is arranged at the upper end of the denitrification tower 4, and a third smoke exhaust pipe 13 and a drain pipe 14 are arranged at the lower end of the denitrification tower 4.

[0018] In this embodiment, the flue gas generated by the boiler body 3 enters the filter box 7 through the first flue gas exhaust pipe 5, the filter screen 8 filters the particulate impurities in the flue gas, and the filtered flue gas enters the denitrification tower 4 through the second flue gas exhaust pipe 6. The ammonia liquid storage box 10 sprays ammonia liquid through the nozzle 11, which reacts with the flue gas to denitrify. During the spraying of the ammonia liquid, the drive motor 12 drives the turntable 9 to rotate, so that the ammonia liquid is evenly sprayed in the denitrification tower 4, and the denitrification effect is better. The flue gas after denitrification is finally discharged from the third flue gas exhaust pipe 13, and the reacted ammonia liquid is discharged from the drain pipe 14. After the flue gas denitrification is completed, the cleaning component cleans the filter screen 8 to prevent the filter screen 8 from being blocked and affecting the flue gas pass rate, thereby improving the efficiency of the flue gas denitrification treatment.

[0019] In this embodiment, the cleaning assembly includes a sliding frame 15, which is slidably connected to the filter box 7, and the sliding frame 15 is located between the filter screen 8 and the second smoke exhaust pipe 6. A first push rod motor 16 is fixedly connected to the upper end of the frame 2, and a push rod of the first push rod motor 16 is fixedly connected to the upper end of the sliding frame 15. A ventilation plate 17 is fixedly connected inside the sliding frame 15, and a plurality of nozzles 18 are provided on the ventilation plate 17. An air pump 19 is fixedly connected to the frame 2, and an air pipe 20 is provided on the air pump 19, and the air pipe 20 is communicated with the ventilation plate 17. When the filter 8 needs to be cleaned, the first push rod motor 16 drives the sliding frame 15 into the filter box 7, and then starts the air pump 19 to transport the gas to the ventilation plate 17 through the air pipe 20 and spray it out from the nozzle 18 to reversely blow the filter 8 to prevent the filter 8 from being blocked and affecting the flue gas passing rate, thereby improving the efficiency of flue gas denitrification treatment. After the filter 8 is sprayed, the first push rod motor 16 drives the sliding frame 15 to move out of the filter box 7.

[0020] In this embodiment, the filter box 7 is fixedly connected to a second push rod motor 21, and a cleaning brush 22 is fixedly connected to the output shaft of the second push rod motor 21, and the cleaning brush 22 is located between the first smoke exhaust pipe 5 and the filter 8. The cleaning brush 22 is driven up and down by the second push rod motor 21 to clean the particle dust attached to the surface of the filter 8, and cooperates with the nozzle 18 to achieve a better cleaning effect on the filter 8.

[0021] In this embodiment, a collecting hopper 23 is provided at the lower end of the filter box 7. The collecting hopper 23 collects the particle impurities cleaned from the filter screen 8.

[0022] In this embodiment, a transparent observation window is provided on the filter box 7. The use of the filter screen 8 can be observed through the transparent observation window.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. At the same time, the meaning of "and / or" appearing in the full text is that it includes three schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A boiler flue gas denitrification device, characterized in that: The invention comprises a frame (2), wherein a boiler body (3), a denitration tower (4), a first smoke exhaust pipe (5) and a second smoke exhaust pipe (6) are arranged on the frame (2), a filter box (7) is arranged between the boiler body (3) and the denitration tower (4), the boiler body (3) and the filter box (7) are connected through the first smoke exhaust pipe (5), the filter box (7) and the denitration tower (4) are connected through the second smoke exhaust pipe (6), a filter screen (8) is arranged in the filter box (7), and the filter box (7) is provided with a filter screen (8). ) is also provided with a cleaning component, a turntable (9) is rotatably connected inside the denitrification tower (4), an ammonia liquid storage tank (10) is fixedly connected to the lower end of the turntable (9), a row of nozzles (11) are provided at the lower end of the ammonia liquid storage tank (10), the height of the nozzles (11) is higher than the second smoke exhaust pipe (6), a driving motor (12) for driving the turntable (9) to rotate is provided at the upper end of the denitrification tower (4), and a third smoke exhaust pipe (13) and a drain pipe (14) are provided at the lower end of the denitrification tower (4).

2. The boiler flue gas denitrification device according to claim 1, characterized in that: The cleaning assembly comprises a sliding frame (15), the sliding frame (15) is slidably connected to the filter box (7), the sliding frame (15) is located between the filter screen (8) and the second smoke exhaust pipe (6), the upper end of the frame (2) is fixedly connected to a first push rod motor (16), the push rod of the first push rod motor (16) is fixedly connected to the upper end of the sliding frame (15), the sliding frame (15) is fixedly connected to a ventilation plate (17), the ventilation plate (17) is provided with a plurality of nozzles (18), the frame (2) is fixedly connected to an air pump (19), the air pump (19) is provided with an air pipe (20), and the air pipe (20) is communicated with the ventilation plate (17).

3. The boiler flue gas denitrification device according to claim 1, characterized in that: A second push rod motor (21) is fixedly connected to the filter box (7), a cleaning brush (22) is fixedly connected to the output shaft of the second push rod motor (21), and the cleaning brush (22) is located between the first smoke exhaust pipe (5) and the filter screen (8).

4. The boiler flue gas denitrification device according to claim 1, characterized in that: A collecting bucket (23) is provided at the lower end of the filter box (7).

5. The boiler flue gas denitrification device according to claim 1, characterized in that: The filter box (7) is provided with a transparent observation window.

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