Boiler denitration device

Abstract

The utility model provides a kind of boiler denitration device, belong to boiler denitration technical field.A kind of boiler denitration device, characterized by, including base, the base is sequentially fixedly connected with boiler body, waste heat recovery tank, filter box and desulfurization tank, first flue pipe is communicated between the boiler body and waste heat recovery tank, second flue pipe is communicated between waste heat recovery tank and filter box, third flue pipe is communicated between filter box and desulfurization tank, air baffle is rotatably connected in the upper end of desulfurization tank, driving motor that air baffle is rotated is fixedly connected on the side wall of desulfurization tank, one row of spray head is communicated with the lower end of air baffle, ammonia liquid tank is fixedly connected with the upper end of desulfurization tank, conveying hose is communicated between ammonia liquid tank and air baffle.The utility model has in the process of spraying ammonia liquid, driving motor makes air baffle rotate back and forth, so that ammonia liquid is evenly sprayed in denitration tank, and the advantage that denitration effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of boiler denitrification technology and relates to a boiler denitrification device. Background Technology

[0002] A boiler is a thermal device that uses the heat energy released from fuel combustion to transfer to water in a container, raising the water to the required temperature or pressure for steam. During the boiler combustion heating process, a large amount of flue gas is generated. This flue gas cannot be directly discharged and needs to be filtered and denitrified to remove harmful substances. Existing boiler denitrification devices fail to effectively recover heat from the flue gas, and the sprayed ammonia solution is uneven, affecting the denitrification effect. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a boiler denitrification device. This device solves the problems that existing boiler denitrification devices fail to effectively recover heat from flue gas and that the sprayed ammonia solution is uneven, thus affecting the denitrification effect.

[0004] The objective of this utility model can be achieved through the following technical solutions: A boiler denitrification device, characterized in that it includes a base, on which a boiler body, a waste heat recovery box, a filter box, and a desulfurization box are sequentially fixedly connected. A first exhaust pipe connects the boiler body and the waste heat recovery box, a second exhaust pipe connects the waste heat recovery box and the filter box, a third exhaust pipe connects the filter box and the desulfurization box, a fourth exhaust pipe is fixedly connected to the lower end of the desulfurization box, an air vent plate is rotatably connected to the upper end of the desulfurization box, a drive motor for rotating the air vent plate is fixedly connected to the side wall of the desulfurization box, a row of nozzles is connected to the lower end of the air vent plate, an ammonia liquid tank is fixedly connected to the upper end of the desulfurization box, and a conveying hose connects the ammonia liquid tank and the air vent plate.

[0005] In the aforementioned boiler denitrification device, the height of the nozzle is higher than that of the third exhaust pipe.

[0006] In the above-mentioned boiler denitrification device, the waste heat recovery box is equipped with a heat exchange tube, the upper end of the heat exchange tube is equipped with a water inlet, and the lower end of the heat exchange tube is equipped with a water outlet.

[0007] In the aforementioned boiler denitrification device, the filter box is equipped with several dust collection bags.

[0008] In the aforementioned boiler denitrification device, a drain pipe is provided at the lower end of the desulfurization box.

[0009] Compared with the prior art, the present invention has the following advantages: The ammonia liquid tank delivers ammonia liquid to the ventilation plate through a delivery hose, and then sprays it out from the nozzle to react with the flue gas for denitrification. During the ammonia liquid spraying process, the drive motor drives the ventilation plate to rotate back and forth, so that the ammonia liquid is evenly sprayed in the denitrification box, resulting in better denitrification effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] In the picture, 2. Base; 3. Boiler body; 4. Waste heat recovery box; 5. Filter box; 6. Desulfurization box; 7. First flue pipe; 8. Second flue pipe; 9. Third flue pipe; 10. Fourth flue pipe; 11. Ventilation plate; 12. Drive motor; 13. Nozzle; 14. Ammonia tank; 15. Conveying hose; 16. Heat exchange tube; 17. Water inlet; 18. Water outlet; 19. Dust collector bag; 20. Drain pipe. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0013] like Figure 1 As shown, A boiler denitrification device, characterized in that it includes a base 2, on which a boiler body 3, a waste heat recovery box 4, a filter box 5, and a desulfurization box 6 are sequentially fixedly connected. A first exhaust pipe 7 connects the boiler body 3 and the waste heat recovery box 4. A second exhaust pipe 8 connects the waste heat recovery box 4 and the filter box 5. A third exhaust pipe 9 connects the filter box 5 and the desulfurization box 6. A fourth exhaust pipe 10 is fixedly connected to the lower end of the desulfurization box 6. An air vent 11 is rotatably connected to the upper end of the desulfurization box 6. A drive motor 12 for rotating the air vent 11 is fixedly connected to the side wall of the desulfurization box 6. A row of nozzles 13 connects to the lower end of the air vent 11. An ammonia liquid tank 14 is fixedly connected to the upper end of the desulfurization box 6. A conveying hose 15 connects the ammonia liquid tank 14 and the air vent 11.

[0014] In this embodiment, the flue gas generated by the boiler body 3 enters the waste heat recovery box 4 through the first exhaust pipe 7 to recover the heat in the flue gas and reduce its temperature. The cooled flue gas then enters the filter box 5 through the second exhaust pipe 8 for filtration. The filtered flue gas then enters the denitrification box through the third exhaust pipe 9. The ammonia tank 14 delivers ammonia liquid to the ventilation plate 11 through the delivery hose 15, and then sprays it out from the nozzle 13 to react with the flue gas for denitrification. During the ammonia liquid spraying process, the drive motor 12 drives the ventilation plate 11 to rotate back and forth, so that the ammonia liquid is evenly sprayed in the denitrification box, resulting in a better denitrification effect. Finally, the denitrified flue gas is discharged from the fourth exhaust pipe 10.

[0015] In this embodiment, the height of the nozzle 13 is higher than that of the third exhaust pipe 9.

[0016] In this embodiment, the waste heat recovery box 4 is equipped with a heat exchange tube 16, with a water inlet 17 at the upper end and a water outlet 18 at the lower end. Water is added to the heat exchange tube 16 through the water inlet 17. After the high-temperature flue gas enters the waste heat recovery box 4, it exchanges heat with the heat exchange tube 16. The water in the heat exchange tube 16 absorbs heat to a certain temperature and is then discharged from the water outlet 18 for use.

[0017] In this embodiment, the filter box 5 is equipped with a plurality of dust collection bags 19. The dust collection bags 19 filter solid impurities in the flue gas.

[0018] In this embodiment, a drain pipe 20 is provided at the lower end of the desulfurization tank 6. Wastewater generated after the reaction of ammonia liquid with flue gas is discharged from the drain pipe 20.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A boiler denitrification device, characterized in that, The system includes a base (2), on which a boiler body (3), a waste heat recovery box (4), a filter box (5), and a desulfurization box (6) are fixedly connected in sequence. A first exhaust pipe (7) connects the boiler body (3) and the waste heat recovery box (4). A second exhaust pipe (8) connects the waste heat recovery box (4) and the filter box (5). A third exhaust pipe (9) connects the filter box (5) and the desulfurization box (6). A fourth exhaust pipe (10) is fixedly connected to the lower end of the desulfurization box (6). A ventilation plate (11) is rotatably connected to the upper end of the desulfurization box (6). A drive motor (12) that drives the ventilation plate (11) to rotate is fixedly connected to the side wall of the desulfurization box (6). A row of nozzles (13) is connected to the lower end of the ventilation plate (11). An ammonia liquid tank (14) is fixedly connected to the upper end of the desulfurization box (6). A conveying hose (15) connects the ammonia liquid tank (14) and the ventilation plate (11).

2. The boiler denitrification device according to claim 1, characterized in that, The height of the nozzle (13) is higher than that of the third exhaust pipe (9).

3. The boiler denitrification device according to claim 1, characterized in that, The waste heat recovery box (4) is equipped with a heat exchange tube (16), the upper end of the heat exchange tube (16) is provided with a water inlet (17), and the lower end of the heat exchange tube (16) is provided with a water outlet (18).

4. The boiler denitrification device according to claim 1, characterized in that, The filter box (5) is equipped with several dust collection bags (19).

5. The boiler denitrification device according to claim 1, characterized in that, The desulfurization box (6) is equipped with a drain pipe (20) at the lower end.

Images