Thermal power plant waste gas treatment device

Abstract

The utility model discloses a thermal power plant waste gas treatment device which comprises a box body, a first box cover is installed on the box body, a rotating pipe is rotationally connected to the first box cover, a square pipe is communicated with the bottom end of the rotating pipe, a plurality of gas ejector pipes are evenly and detachably installed on the square pipe, and a plurality of gas nozzles are communicated with the gas ejector pipes. An annular pipe is fixedly connected to the upper side of the interior of the box body, the bottom end of the annular pipe communicates with a plurality of atomization spraying heads, a liquid outlet is formed in the bottom side of the side end of the box body, a water pump is installed at the side end of the box body, the input end of the water pump communicates with the liquid outlet, and the output end of the water pump communicates with the annular pipe through a water conveying pipe; a motor is installed on the fixing frame, a first gear is fixedly connected to the output end of the motor, a second gear meshed with the first gear is fixedly connected to the rotating pipe, and the top end of the rotating pipe communicates with a gas inlet pipe through a rotating joint, so that it can be guaranteed that waste gas and ammonia water are fully mixed, and the effect of treating nitric oxide in the waste gas is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and more specifically, to a waste gas treatment device for a thermal power plant. Background Art

[0002] In thermal power plants, the waste gas generated by power generation needs to be treated. The existing waste gas treatment devices cannot remove nitrogen oxides in the waste gas when treating the waste gas, which easily causes a large amount of nitrogen oxides to be discharged into the external environment, causing environmental pollution, thereby causing the waste gas treatment device to be used in an environmentally unfriendly way, greatly reducing the environmental friendliness of the waste gas treatment device.

[0003] After searching, the utility model patent with Chinese application number CN201920482192.2 discloses a waste gas treatment device for a thermal power plant, including a box body and an ammonia water tank. The bottom of the box body is fixedly connected to a discharge cone hopper, and the center of the bottom of the discharge cone hopper is connected to a discharge pipe. Both sides of the discharge cone hopper are fixedly connected to support legs. The surface on the right side of the box body is vertically fixedly connected to a feed horn cone hopper, and the right side of the feed horn cone hopper is connected to an air intake pipe.

[0004] When in use, the exhaust gas from the thermal power plant enters the interior of the box through the air inlet pipe and the feed trumpet cone hopper, and is discharged through the discharge trumpet hopper and the air outlet pipe. At the same time, the ammonia water sprayed from the atomizing spray head is mixed with the exhaust gas from the thermal power plant and the exhaust gas is treated, thereby treating the nitrogen oxides in the exhaust gas from the thermal power plant.

[0005] Since the flow rate of the exhaust gas flowing from the inside of the box is relatively high, the time it contacts with the ammonia solution sprayed from the atomizing spray head is relatively short, so its effect on the exhaust gas treatment of thermal power plants is relatively poor. In addition, the ammonia solution is sprayed into the inside of the box in a mist form, and the atomized ammonia solution will be discharged along with the exhaust gas. The ammonia solution in the exhaust gas must be removed later, thereby increasing the exhaust gas treatment process and reducing the efficiency of the exhaust gas treatment. Utility Model Content

[0006] (1) Technical problems solved

[0007] In response to the problems existing in the prior art, the utility model provides a waste gas treatment device for a thermal power plant to solve the technical problem mentioned in the background technology that the waste gas flowing from the inside of the box has a high flow rate, and the contact time between the waste gas and the ammonia water sprayed from the atomizing spray head is short, resulting in a relatively poor effect on the waste gas treatment of the thermal power plant.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a waste gas treatment device for a thermal power plant, comprising a box body, the box body is equipped with a first box cover, the first box cover is rotatably connected to a rotating pipe, the bottom end of the rotating pipe is connected to a square pipe, and a plurality of injection pipes are evenly and detachably installed on the square pipe, and the plurality of injection pipes are connected to a plurality of injection nozzles, the inner upper side of the box body is fixedly connected to an annular pipe, the bottom end of the annular pipe is connected to a plurality of atomizing spray heads, a liquid outlet is provided on the bottom side of the side end of the box body, a water pump is installed on the side end of the box body, the input end of the water pump is connected to the liquid outlet, and the output end of the water pump is connected to the annular pipe through a water supply pipe, a fixing frame is installed on the first box cover, a motor is installed on the fixing frame, and the output end of the motor is fixedly connected to a first gear, a second gear meshing with the first gear is fixedly connected to the rotating pipe, and the top of the rotating pipe is connected to an air inlet pipe through a rotating joint, which can ensure that the waste gas and the ammonia water are fully mixed, thereby ensuring the effect of treating nitrogen oxides in the waste gas.

[0010] The utility model is further configured such that a water tank is placed on the side end of the box body, an aeration box is fixedly connected to the inner bottom side of the water tank, an air pump connected to the interior of the box body is installed on the first box cover, and the air pump is connected to the aeration box through a ventilation pipe, so as to facilitate the absorption of ammonia water in the treated waste gas.

[0011] The utility model is further configured such that a second tank cover is installed on the top of the water tank, a water adding pipe and an exhaust pipe are connected to the second tank cover, and a first pipe cap is installed on the water adding pipe to facilitate adding water to the interior of the water tank.

[0012] The present invention is further configured such that the bottom end of the water tank is connected to a first liquid drain pipe, and a first valve is installed on the first liquid drain pipe to facilitate draining the water inside the water tank.

[0013] The present invention is further configured such that the first box cover is connected to a liquid adding pipe, and a second pipe cap is installed on the liquid adding pipe to facilitate adding ammonia water into the interior of the box.

[0014] The present invention is further configured such that the bottom end of the box body is connected to a second liquid drain pipe, and a second valve is installed on the second liquid drain pipe to facilitate the discharge of the ammonia water inside the box body.

[0015] The utility model is further configured such that a plurality of threaded tubes are evenly connected to the square tube, the air injection tube is screwed onto the outside of the threaded tube, and a sealing gasket is provided between the air injection tube and the square tube to facilitate disassembly and assembly of the air injection tube.

[0016] The utility model is further configured such that a filter screen is fixedly connected to the inside of the liquid outlet, and scrapers are fixedly connected to the multiple jet pipes located on the lower side, and the side ends of the scrapers are in contact with the side ends of the filter screen to prevent impurities from entering the water pump, the annular tube and the multiple atomizing spray heads, thereby preventing the atomizing spray heads from being blocked and the filter screen from being blocked.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a waste gas treatment device for a thermal power plant, which has the following beneficial effects:

[0019] 1. The exhaust gas generated by the thermal power plant is evenly sprayed into the ammonia water inside the box through the air inlet pipe, rotating pipe, square pipe, multiple jet pipes and multiple jet nozzles. At the same time, the rotating pipe drives the multiple jet pipes to rotate, so that the exhaust gas and the ammonia water are fully mixed. The treated exhaust gas is transported from the inside of the ammonia water to the upper side of the inside of the box. At the same time, the ammonia water inside the box is transported to the inside of the annular pipe and multiple atomizing spray heads through a water pump, and the ammonia water is sprayed into the inside of the box, so that the sprayed ammonia water is mixed with the exhaust gas, and the exhaust gas is subjected to secondary treatment, thereby increasing the effect of treating nitrogen oxides in the exhaust gas.

[0020] 2. The treated exhaust gas on the upper side of the box is extracted by an air pump and transported to the inside of the aeration box through the ventilation pipe. The treated exhaust gas is evenly transported to the water inside the water tank through the aeration box. The ammonia in the exhaust gas is absorbed by the water to prevent the ammonia from being discharged with the exhaust gas, and to avoid the subsequent treatment of the ammonia in the exhaust gas, thereby ensuring the efficiency of exhaust gas treatment.

[0021] 3. The jet pipe is installed on the square pipe by screwing it onto the outside of the threaded pipe, so that it is easy to disassemble and assemble the jet pipe, clean the inside of the jet pipe, and replace the jet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front structural diagram of a waste gas treatment device for a thermal power plant in the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the connection between the box body, air pump, motor, first gear, second gear and rotating pipe in the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the box, annular pipe, multiple atomizing spray heads and other structures connected in the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the connection between the box body and the filter screen plate in the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the transfer pipe, square pipe and multiple air injection pipes connected to each other in the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the connection between the transfer pipe, square pipe and multiple threaded pipes of the utility model;

[0028] Figure 7This is a schematic diagram of the structure of the connection between the water tank, aeration tank and other structures of the utility model.

[0029] In the figure: 1. box body; 2. first box cover; 3. rotating pipe; 4. square pipe; 5. air jet pipe; 6. air jet nozzle; 7. annular pipe; 8. atomizing spray head; 9. liquid outlet; 10. water pump; 11. water pipe; 12. fixing frame; 13. motor; 14. first gear; 15. second gear; 16. rotary joint; 17. air inlet pipe; 18. water tank; 19. aeration box; 20. air pump; 21. vent pipe; 22. second box cover; 23. water supply pipe; 24. exhaust pipe; 25. first pipe cap; 26. first liquid discharge pipe; 27. first valve; 28. liquid supply pipe; 29. ​​second pipe cap; 30. second liquid discharge pipe; 31. second valve; 32. threaded pipe; 33. sealing gasket; 34. filter screen; 35. scraper. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0033] See also Figure 1-Figure 7A waste gas treatment device for a thermal power plant includes a box body 1, the bottom end of the box body 1 is connected to a second drain pipe 30, and a second valve 31 is installed on the second drain pipe 30 to facilitate the discharge of ammonia water inside the box body 1, a first box cover 2 is installed on the box body 1, and the first box cover 2 is connected to a liquid adding pipe 28, and a second pipe cap 29 is installed on the liquid adding pipe 28 to facilitate the addition of ammonia water to the inside of the box body 1, and a rotating pipe 3 is rotatably connected to the first box cover 2, and the bottom end of the rotating pipe 3 is connected to a square pipe 4, and a plurality of injection pipes 5 are evenly and detachably installed on the square pipe 4, and the plurality of injection pipes 5 are connected to a plurality of injection nozzles 6, and the interior of the box 1 is provided with a plurality of nozzles 6. The side is fixedly connected with an annular tube 7, the bottom end of the annular tube 7 is connected with a plurality of atomizing spray heads 8, a liquid outlet 9 is provided on the bottom side of the side end of the box body 1, and a water pump 10 is installed on the side end of the box body 1. The input end of the water pump 10 is connected with the liquid outlet 9, and the output end of the water pump 10 is connected with the annular tube 7 through a water pipe 11. A fixing bracket 12 is installed on the first box cover 2, and a motor 13 is installed on the fixing bracket 12. The output end of the motor 13 is fixedly connected with a first gear 14, and a second gear 15 meshing with the first gear 14 is fixedly connected to the rotating tube 3. The top of the rotating tube 3 is connected with an air intake pipe 17 through a rotary joint 16.

[0034] Specifically, the exhaust gas generated by the thermal power plant is evenly sprayed into the ammonia water inside the box body 1 through the air inlet pipe 17, the rotating pipe 3, the square pipe 4, the multiple injection pipes 5 and the multiple injection nozzles 6. At the same time, the motor 13 drives the first gear 14 to rotate, and the first gear 14 drives the second gear 15, the rotating pipe 3, the square pipe 4 and the multiple injection pipes 5 to rotate, so that the exhaust gas is evenly sprayed into the interior of the ammonia water, the exhaust gas and the ammonia water are fully mixed, and the nitrogen oxides in the exhaust gas are treated. The treated exhaust gas is discharged from the interior of the ammonia water to the upper side of the interior of the box body 1. At the same time, the ammonia water inside the box body 1 is transported to the interior of the annular pipe 7 and the multiple atomizing spray heads 8 by the water pump 10, and the ammonia water is sprayed to the upper side of the interior of the box body 1, so that the sprayed ammonia water is mixed with the exhaust gas, and the exhaust gas is subjected to secondary treatment, thereby increasing the effect of treating nitrogen oxides in the exhaust gas.

[0035] See also Figure 1 、 Figure 2 and Figure 7 A water tank 18 is placed at the side end of the box body 1, and an aeration box 19 is fixedly connected to the bottom side of the water tank 18. An air pump 20 connected to the interior of the box body 1 is installed on the first box cover 2, and the air pump 20 is connected to the aeration box 19 through a ventilation pipe 21. A second box cover 22 is installed on the top of the water tank 18, and a water adding pipe 23 and an exhaust pipe 24 are connected to the second box cover 22. A first pipe cap 25 is installed on the water adding pipe 23 to facilitate adding water to the interior of the water tank 18. The bottom end of the water tank 18 is connected to a first drain pipe 26, and a first valve 27 is installed on the first drain pipe 26 to facilitate draining the water inside the water tank 18.

[0036] Specifically, the treated exhaust gas on the upper side of the box body 1 is extracted by the air pump 20 and transported to the inside of the aeration box 19 through the ventilation pipe 21. The treated exhaust gas is evenly transported to the water inside the water tank 18 through the aeration box 19. The ammonia in the exhaust gas is absorbed by the water to avoid the ammonia being discharged along with the exhaust gas, and the subsequent treatment of the ammonia in the exhaust gas is avoided, thereby ensuring the efficiency of the exhaust gas treatment.

[0037] See also Figure 5 and Figure 6 The square tube 4 is evenly connected with a plurality of threaded tubes 32, the jet tube 5 is screwed on the outside of the threaded tube 32, and a sealing gasket 33 is provided between the jet tube 5 and the square tube 4 to ensure the sealing of the connection between the jet tube 5 and the square tube 4.

[0038] Specifically, the air injection pipe 5 is installed on the square pipe 4 by being screwed onto the outside of the threaded pipe 32, so that the air injection pipe 5 can be easily disassembled, the inside of the air injection pipe 5 can be easily cleaned, and the air injection pipe 5 can be easily replaced.

[0039] The utility model is further configured such that a filter screen plate 34 is fixedly connected to the inside of the liquid outlet 9 , and a plurality of air injection pipes 5 located at the lower side are fixedly connected to scrapers 35 , and the side ends of the scrapers 35 are in contact with the side ends of the filter screen plate 34 .

[0040] Specifically, the filter screen 34 prevents impurities from entering the water pump 10, the annular pipe 7 and the multiple atomizing spray heads 8, thereby preventing the atomizing spray heads 8 from being blocked. Since the scraper 35 rotates with the jet pipe 5, the impurities on the filter screen 34 are cleaned off, thereby preventing the filter screen 34 from being blocked.

[0041] In summary, when the overall equipment is in use:

[0042] The exhaust gas generated by the thermal power plant is evenly sprayed into the ammonia water inside the box 1 through the air inlet pipe 17, the rotating pipe 3, the square pipe 4, the multiple jet pipes 5 and the multiple jet nozzles 6. At the same time, the motor 13 drives the first gear 14 to rotate, and the first gear 14 drives the second gear 15, the rotating pipe 3, the square pipe 4 and the multiple jet pipes 5 to rotate, so that the exhaust gas is evenly sprayed into the inside of the ammonia water, so that the exhaust gas and the ammonia water are fully mixed, and the nitrogen oxides in the exhaust gas are treated. The treated exhaust gas is discharged from the inside of the ammonia water to the upper side of the inside of the box 1, and the ammonia water inside the box 1 is transported to the annular The inside of the pipe 7 and multiple atomizing spray heads 8, and spray ammonia water to the upper side of the inside of the box 1, so that the sprayed ammonia water is mixed with the exhaust gas, and the exhaust gas is subjected to secondary treatment. At the same time, the treated exhaust gas on the upper side of the inside of the box 1 is extracted by the air pump 20, and the ventilation pipe 21 is transported to the inside of the aeration box 19. The treated exhaust gas is evenly transported to the water inside the water tank 18 through the aeration box 19, and the ammonia water in the exhaust gas is absorbed by the water to prevent the ammonia water from being discharged with the exhaust gas. The exhaust gas from the water inside the water tank 18 is discharged to the inside of the next exhaust gas treatment equipment through the exhaust pipe 24.

[0043] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste gas treatment device for a thermal power plant, comprising a housing (1), characterized in that: The box body (1) is provided with a first box cover (2), a rotating tube (3) is rotatably connected to the first box cover (2), the bottom end of the rotating tube (3) is connected to a square tube (4), a plurality of jet tubes (5) are evenly and detachably installed on the square tube (4), and a plurality of jet tubes (5) are connected to a plurality of jet nozzles (6), an annular tube (7) is fixedly connected to the upper side of the interior of the box body (1), the bottom end of the annular tube (7) is connected to a plurality of atomizing spray heads (8), a liquid outlet (9) is provided on the bottom side of the side end of the box body (1), and a water outlet is provided on the side end of the box body (1). The invention relates to a pump (10), wherein the input end of the water pump (10) is connected to the liquid outlet (9), and the output end of the water pump (10) is connected to the annular pipe (7) through the water delivery pipe (11). A fixing frame (12) is installed on the first box cover (2), and a motor (13) is installed on the fixing frame (12). The output end of the motor (13) is fixedly connected to a first gear (14). A second gear (15) meshing with the first gear (14) is fixedly connected to the rotating pipe (3). The top end of the rotating pipe (3) is connected to an air intake pipe (17) through a rotating joint (16).

2. The waste gas treatment device for a thermal power plant according to claim 1, characterized in that: A water tank (18) is placed at the side end of the box body (1), and an aeration box (19) is fixedly connected to the inner bottom side of the water tank (18). An air pump (20) connected to the interior of the box body (1) is installed on the first box cover (2), and the air pump (20) is connected to the aeration box (19) through a ventilation pipe (21).

3. The exhaust gas treatment device for a thermal power plant according to claim 2, characterized in that: A second tank cover (22) is installed on the top of the water tank (18), a water supply pipe (23) and an exhaust pipe (24) are connected to the second tank cover (22), and a first pipe cap (25) is installed on the water supply pipe (23).

4. The waste gas treatment device for a thermal power plant according to claim 2, characterized in that: The bottom end of the water tank (18) is connected to a first liquid discharge pipe (26), and a first valve (27) is installed on the first liquid discharge pipe (26).

5. The waste gas treatment device for a thermal power plant according to claim 1, characterized in that: The first box cover (2) is connected to a liquid adding pipe (28), and a second pipe cap (29) is installed on the liquid adding pipe (28).

6. The waste gas treatment device for a thermal power plant according to claim 1, characterized in that: The bottom end of the box body (1) is connected to a second liquid discharge pipe (30), and a second valve (31) is installed on the second liquid discharge pipe (30).

7. The waste gas treatment device for a thermal power plant according to claim 1, characterized in that: The square tube (4) is evenly connected with a plurality of threaded tubes (32), the air injection tube (5) is screwed onto the outside of the threaded tube (32), and a sealing gasket (33) is provided between the air injection tube (5) and the square tube (4).

8. The waste gas treatment device for a thermal power plant according to claim 1, characterized in that: A filter screen plate (34) is fixedly connected inside the liquid outlet (9), and a plurality of the air injection pipes (5) located on the lower side are fixedly connected with a scraper (35), and the side end of the scraper (35) contacts the side end of the filter screen plate (34).

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