Smoke desulfurization and denitrification purification device

Abstract

The utility model relates to a flue dust desulfurization and denitrification purification device, which belongs to the technical field of flue dust purification, and comprises a first purification tank, a second purification tank and a neutralization box, a filtering mechanism is connected in the first purification tank in a sliding manner, a guide hopper is fixedly connected in the first purification tank, and the second purification tank is connected with the neutralization box in a sliding manner. And the top of the guide hopper is rotationally connected with a gas uniformizing mechanism, and a first spraying frame is fixedly connected to the position, located at the top of the guide hopper, in the first purification tank. Through cooperative use of the filtering mechanism and the cleaning mechanism, the filtering mechanism can be cleaned by the cleaning mechanism in the smoke dust purification process, and in the cleaning process, when a cleaning plate makes contact with and passes through a wedge-shaped block, the filtering mechanism can shake, particulate matter attached to the filtering face is shaken off, and the filtering mechanism can be cleaned by the cleaning mechanism. The blockage of the filtering mechanism is avoided, and the circulation efficiency of the smoke dust is ensured, so that the waste of chemical reagents is reduced, and resources are saved.

Description

A flue gas desulfurization and denitrification purification device Technical Field

[0001] This utility model belongs to the field of flue gas purification technology, specifically relating to a flue gas desulfurization and denitrification purification device. Background Technology

[0002] Smoke dust is a solid particulate matter suspended in a gas, formed during the thermal processes of oxidation, sublimation, evaporation, and condensation. For example, converter flue gas contains a large amount of extremely fine smoke dust. Smoke dust is solid particulate matter emitted during coal combustion and industrial production. Its main components are silicon dioxide, aluminum oxide, iron oxide, calcium oxide, and unburned carbon particles. There are many types of air pollutants, which can be broadly classified into two categories according to their morphology: particulate pollutants and harmful gases. Smoke dust belongs to particulate pollutants.

[0003] Currently, existing flue gas purification devices, due to the large amount of particulate matter in the flue gas, require filtration of these particles before subsequent desulfurization and denitrification treatment. However, during filtration, the particles clog the filter screen, reducing the flue gas flow efficiency and wasting chemical reagents used for desulfurization and denitrification. Based on this, a flue gas desulfurization and denitrification purification device is proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide a simple and reasonably designed flue gas desulfurization and denitrification purification device to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A flue gas desulfurization and denitrification purification device includes a first purification tank, a second purification tank, and a neutralization tank. A filter mechanism is slidably connected inside the first purification tank. A guide bucket is fixedly connected inside the first purification tank. A gas equalization mechanism is rotatably connected to the top of the guide bucket. A first spray frame is fixedly connected to the top of the guide bucket inside the first purification tank. The first purification tank and the second purification tank are fixedly connected through a connecting pipe. A multi-layer catalytic mesh is fixedly connected inside the second purification tank. A second spray frame is fixedly connected to the top of the multi-layer catalytic mesh inside the second purification tank. A cleaning mechanism for cleaning the filter mechanism is fixedly connected inside the first purification tank.

[0007] As a further optimization of this utility model, the filtration mechanism includes a fixed ring fixedly connected inside the first purification tank, a telescopic rod fixedly connected to the bottom of the fixed ring, a shaking spring sleeved on the outer surface of the telescopic rod, a fine filter screen fixedly connected to the bottom of the telescopic rod, the two ends of the shaking spring being fixedly connected to the fixed ring and the fine filter screen respectively, a coarse filter screen fixedly connected to the bottom of the fine filter screen, and the outer surfaces of the fine filter screen and the coarse filter screen being in contact with the inner surface of the first purification tank.

[0008] As a further optimization of this utility model, the cleaning mechanism includes a fixed frame fixedly connected inside the first purification tank. A motor is installed at the bottom of the fixed frame, and a protective cover is fixedly connected to the bottom of the fixed frame. The motor is located inside the protective cover. A rotating shaft is fixedly connected to the output end of the motor. A bushing is slidably connected to the outer surface of the rotating shaft. A groove is formed on the outer surface of the rotating shaft. A sliding rod is fixedly connected to the inner surface of the bushing. The sliding rod is slidably connected to the groove. A cleaning strip is fixedly connected to the outer surface of the bushing. A cleaning plate is fixedly connected to the outer surface of the bushing. A wedge block is fixedly connected to the top of the fixed frame. The wedge block is adapted to the cleaning plate.

[0009] As a further optimization of this utility model, the top of the cleaning strip is attached to the bottom of the fine filter screen, and the top of the cleaning plate is attached to the bottom of the coarse filter screen.

[0010] As a further optimization of this utility model, the gas equalization mechanism includes a rotating sleeve that is rotatably and sealingly connected to the top of the guide bucket. The inner top of the rotating sleeve is fixedly connected to the top of the rotating shaft. An air jet pipe is fixedly connected to the side wall of the rotating sleeve. An air jet hole is opened at the bottom of the air jet pipe. A cleaning rod is fixedly connected to the bottom of the rotating sleeve. The cleaning rod is in contact with the top of the guide bucket.

[0011] As a further optimization of this utility model, the bottom of the neutralization box is fixedly connected to the top of the second purification tank, the bottom of the first purification tank is fixedly connected to a ash discharge pipe, the bottom of the second purification tank is fixedly connected to a drain pipe, the side wall of the first purification tank is fixedly connected to an air inlet pipe, the top of the neutralization box is fixedly connected to an exhaust pipe, the side wall of the first purification tank is fixedly connected to a first infusion pipe communicating with the inside of the first spray frame, the side wall of the second purification tank is fixedly connected to a second infusion pipe communicating with the inside of the second spray frame, and the side wall of the first purification tank is fixedly connected to a sewage discharge pipe, which is located at the top of the guide hopper.

[0012] The beneficial effects of this utility model are as follows: By using the filtration mechanism and the cleaning mechanism in combination, the cleaning mechanism can clean the filtration mechanism during the purification of smoke and dust. During the cleaning process, when the cleaning plate contacts and passes through the wedge block, it will cause the filtration mechanism to shake, shaking off the particles adhering to the filter surface, avoiding clogging of the filtration mechanism, ensuring the efficiency of smoke and dust circulation, thereby reducing the waste of chemical reagents and saving resources. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0014] Figure 2 is a schematic diagram of the overall three-dimensional structure of the back of this utility model;

[0015] Figure 3 is a schematic diagram of the front cross-section of this utility model;

[0016] Figure 4 is a schematic diagram of the three-dimensional structure of the bottom of the coarse filter screen of this utility model;

[0017] Figure 5 is a three-dimensional structural diagram of the bottom of the first spray frame of this utility model;

[0018] Figure 6 is a three-dimensional structural diagram of the front of the guide bucket of this utility model;

[0019] Figure 7 is a three-dimensional structural diagram of the bushing of this utility model.

[0020] In the diagram: 1. First purification tank; 2. Air inlet pipe; 3. Connecting pipe; 4. Second purification tank; 5. Ash discharge pipe; 6. Drain pipe; 7. Neutralization box; 8. Exhaust pipe; 9. First infusion pipe; 10. Second infusion pipe; 11. Sewage discharge pipe; 12. First spray frame; 13. Second spray frame; 14. Fixing frame; 15. Motor; 16. Protective cover; 17. Rotating shaft; 18. Guide bucket; 19. Rotating sleeve; 20. Air jet pipe; 21. Fixing ring; 22. Telescopic rod; 23. Vibrating spring; 24. Fine filter screen; 25. Coarse filter screen; 26. Cleaning rod; 27. Slide groove; 28. Slide rod; 29. ​​Bushing; 30. Cleaning strip; 31. Cleaning plate; 32. Wedge block; 33. Catalytic mesh. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example: As shown in Figures 1, 2, 3, 4, 5, 6, and 7, a flue gas desulfurization and denitrification purification device includes a first purification tank 1, a second purification tank 4, and a neutralization box 7. The bottom of the neutralization box 7 is fixedly connected to the top of the second purification tank 4. The bottom of the first purification tank 1 is fixedly connected to an ash discharge pipe 5, and a valve is installed inside the ash discharge pipe 5. The valve is opened when discharging particulate matter. The bottom of the second purification tank 4 is fixedly connected to a drain pipe 6, and a valve is installed inside the drain pipe 6. The valve is opened when discharging liquid. An air inlet pipe 2 is fixedly connected to the side wall of the first purification tank 1. An exhaust pipe 8 is fixedly connected to the top of the neutralization box 7. A sewage discharge pipe 11 is fixedly connected to the side wall of the first purification tank 1. A filter mechanism is slidably connected inside the first purification tank 1. A guide hopper 18 is fixedly connected inside the first purification tank 1. The sewage discharge pipe 11 is located at the top of the guide hopper 18 and a valve is installed inside the sewage discharge pipe 11. When discharging wastewater, simply open the valve. A gas equalization mechanism is rotatably connected to the top of the guide hopper 18. A first spray frame 12 is fixedly connected to the top of the guide hopper 18 inside the first purification tank 1. A first infusion pipe 9, which communicates with the inside of the first spray frame 12, is fixedly connected to the side wall of the first purification tank 1. The first purification tank 1 and the second purification tank 4 are fixedly connected through a connecting pipe 3. A multi-layer catalytic mesh 33 is fixedly connected inside the second purification tank 4. A catalyst, which can be a vanadium-titanium catalyst, is sprayed onto the multi-layer catalytic mesh 33. A second spray frame 13 is fixedly connected to the top of the multi-layer catalytic mesh 33 inside the second purification tank 4. A second infusion pipe 10, which communicates with the inside of the second spray frame 13, is fixedly connected to the side wall of the second purification tank 4. The first infusion pipe 9 and the second infusion pipe 10 are used to transport alkaline solution and ammonia water, respectively. A cleaning mechanism for cleaning the filter mechanism is fixedly connected inside the first purification tank 1.

[0023] In use, the first infusion pipe 9 injects alkaline liquid into the first spray frame 12, causing the first spray frame 12 to spray the alkaline liquid downwards. The second infusion pipe 10 injects ammonia water into the second spray frame 13, causing the second spray frame 13 to spray ammonia water downwards. At the same time, flue gas is injected into the first purification tank 1 through the air inlet pipe 2. After being filtered by the filtration mechanism, the flue gas is evenly injected into the alkaline liquid sprayed by the first spray frame 12 under the action of the gas equalization mechanism, so that the flue gas can fully contact the alkaline liquid, thereby allowing the alkaline liquid to remove sulfides from the flue gas. The droplets formed by the reaction with the alkaline liquid will drip onto the guide hopper 18. Then, the desulfurized flue gas will be injected into the second purification tank 4 through the connecting pipe 3, and after passing through the multi-layer catalytic mesh 33, it will undergo denitrification under the action of ammonia water. The desulfurized and denitrified flue gas will enter the neutralization tank 7 to remove chemical reagents, and then be discharged through the exhaust pipe 8.

[0024] As shown in Figures 3, 4, 6, and 7, the filtration mechanism includes a fixed ring 21 fixedly connected inside the first purification tank 1. A telescopic rod 22 is fixedly connected to the bottom of the fixed ring 21. A vibrating spring 23 is sleeved on the outer surface of the telescopic rod 22. A fine filter screen 24 is fixedly connected to the bottom of the telescopic rod 22. The two ends of the vibrating spring 23 are fixedly connected to the fixed ring 21 and the fine filter screen 24, respectively. A coarse filter screen 25 is fixedly connected to the bottom of the fine filter screen 24. The outer surfaces of the fine filter screen 24 and the coarse filter screen 25 are in contact with the inner surface of the first purification tank 1. The cleaning mechanism includes a fixed frame 14 fixedly connected inside the first purification tank 1. A motor 15 is installed at the bottom of the fixed frame 14. A protective cover 16 is fixedly connected to the bottom of the fixed frame 14. The motor 15 is located inside the protective cover 16. The output end of 15 is fixedly connected to a rotating shaft 17. A bushing 29 is slidably connected to the outer surface of the rotating shaft 17. A groove 27 is opened on the outer surface of the rotating shaft 17. A sliding rod 28 is fixedly connected to the inner surface of the bushing 29. The sliding rod 28 is slidably connected to the groove 27. A cleaning strip 30 is fixedly connected to the outer surface of the bushing 29. The bushing 29 is rotatably connected to the fine filter screen 24 and the coarse filter screen 25. The bushing 29 is set in an "I" shape, which can drive the fine filter screen 24 and the coarse filter screen 25 to move up and down. A cleaning plate 31 is fixedly connected to the outer surface of the bushing 29. A wedge block 32 is fixedly connected to the top of the fixing frame 14. The wedge block 32 is adapted to the cleaning plate 31. The top of the cleaning strip 30 is attached to the bottom of the fine filter screen 24. The top of the cleaning plate 31 is attached to the bottom of the coarse filter screen 25.

[0025] When purifying flue gas, starting the motor 15 causes the rotating shaft 17 to rotate through the slide groove 27 and slide rod 28, driving the bushing 29 to rotate. The flue gas will then pass through the coarse filter 25 and the fine filter 24 in sequence, where the particulate matter in the flue gas is filtered. The rotation of the bushing 29 will drive the cleaning strip 30 and the cleaning plate 31 to rotate, so that the cleaning strip 30 and the cleaning plate 31 clean the bottom of the fine filter 24 and the coarse filter 25 respectively. During this process, since the cleaning plate 31 is rotating, it will intermittently contact the bottom of the fine filter 24 and the coarse filter 25. As the cleaning plate 31 passes through the wedge block 32, it moves upward, pushing the fine filter 24 and coarse filter 25 upward, compressing the telescopic rod 22 and the shaking spring 23. When the cleaning plate 31 passes through the wedge block 32, the fine filter 24 and coarse filter 25 will shake under the action of the shaking spring 23, shaking off the particles adhering to the filter surface at the bottom of the fine filter 24 and coarse filter 25, avoiding clogging of the fine filter 24 and coarse filter 25, ensuring the efficiency of dust flow, thereby reducing the waste of chemical reagents and saving resources.

[0026] As shown in Figures 4 and 6, the gas equalization mechanism includes a rotating sleeve 19 that is rotatably and sealed to the top of the guide bucket 18. The inner top of the rotating sleeve 19 is fixedly connected to the top of the rotating shaft 17. An air jet pipe 20 is fixedly connected to the side wall of the rotating sleeve 19. An air jet hole is opened at the bottom of the air jet pipe 20. A cleaning rod 26 is fixedly connected to the bottom of the rotating sleeve 19. The cleaning rod 26 is in contact with the top of the guide bucket 18.

[0027] When the rotating shaft 17 rotates, it will drive the rotating sleeve 19 to rotate, which in turn drives the jet pipe 20 to rotate. This allows the jet pipe 20 to evenly spray the filtered flue gas through the jet holes onto the bottom of the first spray frame 12. The jet pipe 20 can also agitate the flue gas and the alkaline liquid sprayed from the first spray frame 12, improving the mixing efficiency of the alkaline liquid and the flue gas, thereby improving the desulfurization efficiency of the flue gas. At the same time, the rotating sleeve 19 will also drive the guide hopper 18 to rotate, preventing the substances generated by the reaction between the flue gas and the alkaline liquid from accumulating on the guide hopper 18 and causing corrosion. This provides good protection for the guide hopper 18, extends its service life, and saves resources.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A flue gas desulfurization and denitrification purification device, comprising a first purification tank (1), a second purification tank (4), and a neutralization tank (7), characterized in that: A filter mechanism is slidably connected inside the first purification tank (1). A guide bucket (18) is fixedly connected inside the first purification tank (1). A gas equalization mechanism is rotatably connected to the top of the guide bucket (18). A first spray rack (12) is fixedly connected to the top of the guide bucket (18) inside the first purification tank (1). The first purification tank (1) and the second purification tank (4) are fixedly connected through a connecting pipe (3). A multi-layer catalytic mesh (33) is fixedly connected inside the second purification tank (4). A second spray rack (13) is fixedly connected to the top of the multi-layer catalytic mesh (33) inside the second purification tank (4). A cleaning mechanism for cleaning the filter mechanism is fixedly connected inside the first purification tank (1).

2. The flue gas desulfurization and denitrification purification device according to claim 1, characterized in that: The filtration mechanism includes a fixed ring (21) fixedly connected inside the first purification tank (1). A telescopic rod (22) is fixedly connected to the bottom of the fixed ring (21). A shaking spring (23) is sleeved on the outer surface of the telescopic rod (22). A fine filter screen (24) is fixedly connected to the bottom of the telescopic rod (22). The two ends of the shaking spring (23) are fixedly connected to the fixed ring (21) and the fine filter screen (24) respectively. A coarse filter screen (25) is fixedly connected to the bottom of the fine filter screen (24). The outer surfaces of the fine filter screen (24) and the coarse filter screen (25) are in contact with the inner surface of the first purification tank (1).

3. The flue gas desulfurization and denitrification purification device according to claim 2, characterized in that: The cleaning mechanism includes a fixed frame (14) fixedly connected inside the first purification tank (1). A motor (15) is installed at the bottom of the fixed frame (14). A protective cover (16) is fixedly connected to the bottom of the fixed frame (14). The motor (15) is located inside the protective cover (16). A rotating shaft (17) is fixedly connected to the output end of the motor (15). A bushing (29) is slidably connected to the outer surface of the rotating shaft (17). A groove (27) is opened on the outer surface of the rotating shaft (17). A sliding rod (28) is fixedly connected to the inner surface of the bushing (29). The sliding rod (28) is slidably connected to the groove (27). A cleaning strip (30) is fixedly connected to the outer surface of the bushing (29). A cleaning plate (31) is fixedly connected to the outer surface of the bushing (29). A wedge block (32) is fixedly connected to the top of the fixed frame (14). The wedge block (32) is adapted to the cleaning plate (31).

4. The flue gas desulfurization and denitrification purification device according to claim 3, characterized in that: The top of the cleaning strip (30) is attached to the bottom of the fine filter screen (24), and the top of the cleaning plate (31) is attached to the bottom of the coarse filter screen (25).

5. The flue gas desulfurization and denitrification purification device according to claim 3, characterized in that: The gas equalization mechanism includes a rotating sleeve (19) that is rotatably and sealed to the top of the guide bucket (18). The inner top of the rotating sleeve (19) is fixedly connected to the top of the rotating shaft (17). The side wall of the rotating sleeve (19) is fixedly connected to a jet pipe (20). The bottom of the jet pipe (20) is provided with a jet hole. The bottom of the rotating sleeve (19) is fixedly connected to a cleaning rod (26). The cleaning rod (26) is in contact with the top of the guide bucket (18).

6. The flue gas desulfurization and denitrification purification device according to claim 1, characterized in that: The bottom of the neutralization tank (7) is fixedly connected to the top of the second purification tank (4). The bottom of the first purification tank (1) is fixedly connected to the ash discharge pipe (5). The bottom of the second purification tank (4) is fixedly connected to the drain pipe (6). The side wall of the first purification tank (1) is fixedly connected to the air inlet pipe (2). The top of the neutralization tank (7) is fixedly connected to the exhaust pipe (8). The side wall of the first purification tank (1) is fixedly connected to the first infusion pipe (9) which communicates with the inside of the first spray frame (12). The side wall of the second purification tank (4) is fixedly connected to the second infusion pipe (10) which communicates with the inside of the second spray frame (13). The side wall of the first purification tank (1) is fixedly connected to the sewage pipe (11). The sewage pipe (11) is located at the top of the guide bucket (18).

Images