A waste aluminum smelting waste gas purification device

Abstract

The utility model relates to waste gas purification field, concretely relates to a kind of waste aluminium smelting waste gas purification device, including fan, water storage tank and waste gas inlet pipe, the fan output end pipe is connected with first waste gas purification assembly, the first waste gas purification assembly pipe is connected with second waste gas purification assembly, third waste gas purification assembly is fixed on the second waste gas purification assembly, heat exchange component is arranged between the water storage tank and waste gas inlet pipe, waste gas inlet pipe is fixedly communicated with fan input end by heat exchange component, the beneficial effect of the utility model is: while having multiple purification function to waste gas, high-temperature waste gas can also be effectively cooled down, so that it can effectively prevent the phenomenon that high-temperature waste gas causes sustained high-temperature damage to bag-type dust collector, activated carbon filler and the like, is favorable to waste aluminium smelting waste gas processing operation, practicality is better, and suitable for promotion.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification, specifically to a waste gas purification device for aluminum smelting. Background Technology

[0002] During the smelting process of scrap aluminum, scrap aluminum smelting furnaces release some harmful gases, including but not limited to smoke, alumina dust, fluorides, and hydrogen chloride. If these waste gases are discharged directly into the atmosphere without treatment, they will not only pollute the environment but may also have adverse effects on human health. Therefore, it is essential to take effective waste gas treatment measures.

[0003] While existing waste aluminum smelting exhaust gas purification devices can purify the exhaust gas, they cannot effectively cool it down. This results in the high-temperature exhaust gas causing continuous high-temperature damage to purification components such as bag filters and activated carbon packing during subsequent treatment, requiring further improvement.

[0004] Therefore, it is necessary to invent a waste gas purification device for aluminum smelting. Utility Model Content

[0005] Therefore, this utility model provides a waste gas purification device for aluminum smelting to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste aluminum smelting waste gas purification device, comprising a fan, a water storage tank, and a waste gas inlet pipe, wherein a first waste gas purification component is connected to the output end of the fan via a pipe, a second waste gas purification component is connected to the first waste gas purification component via a pipe, a third waste gas purification component is fixed on the second waste gas purification component, a heat exchange component is provided between the water storage tank and the waste gas inlet pipe, and the waste gas inlet pipe is fixedly connected to the input end of the fan via the heat exchange component.

[0007] Preferably, the first exhaust gas purification component includes a first exhaust gas conveying pipe, one end of which is fixedly connected to the output end of the fan, a first shut-off valve is fixedly attached to the body of the first exhaust gas conveying pipe, and a bag filter is fixedly connected to the end of the first exhaust gas conveying pipe.

[0008] Preferably, the second exhaust gas purification component includes a second exhaust gas conveying pipe, which is fixedly connected to the output end of the bag filter. A second shut-off valve is fixedly attached to the body of the second exhaust gas conveying pipe, and an absorption tower is fixedly connected to the end of the second exhaust gas conveying pipe. An exhaust pipe is fixedly connected to the top of the absorption tower.

[0009] Preferably, the second exhaust gas purification component further includes a first water pump, the input end of the first water pump is connected to a pipe at the bottom of the side end of the water storage tank, the output end of the first water pump is fixedly connected to a water supply pipe, and a third shut-off valve is fixedly installed on the body of the water supply pipe.

[0010] Preferably, the top of the water supply pipe penetrates the middle of the absorption tower, and a plurality of annular spray pipes are fixed in the middle of the inner wall of the absorption tower. The plurality of annular spray pipes are fixedly connected to each other through a connecting pipe. A plurality of spray heads are fixedly connected to the bottom of each of the plurality of annular spray pipes, and the top of the water supply pipe is fixedly connected to the annular spray pipes.

[0011] Preferably, the third waste gas purification component includes activated carbon packing material, which is filled and fixed inside the absorption tower.

[0012] Preferably, the heat exchange assembly includes a heat exchanger, the exhaust gas inlet pipe is fixedly connected to the heat medium inlet of the heat exchanger, the cold medium outlet of the heat exchanger is fixedly connected to a low-temperature exhaust gas conveying pipe, and the low-temperature exhaust gas conveying pipe is fixedly connected to the fan input end.

[0013] Preferably, the inlet of the heat exchanger is fixedly connected to a second water pump, the input end of the second water pump is fixedly connected to a cold water inlet pipe, the outlet of the heat exchanger is fixedly connected to an absorption water delivery pipe, and the end of the absorption water delivery pipe away from the heat exchanger is fixedly connected to the top of the water storage tank.

[0014] The beneficial effects of this utility model are as follows: by using the fan, water tank, exhaust gas inlet pipe, first exhaust gas purification component, second exhaust gas purification component, third exhaust gas purification component and heat exchange component in combination, it can not only perform multiple purification functions on exhaust gas, but also effectively cool down high-temperature exhaust gas. This can effectively prevent high-temperature exhaust gas from causing continuous high-temperature damage to bag filter, activated carbon packing and other components. It is beneficial to the treatment of waste aluminum smelting exhaust gas, has good practicality and is suitable for promotion. Attached Figure Description

[0015] Figure 1 A partial structural cross-sectional view provided for this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of the structure at point A in the image;

[0017] Figure 3 A top view of the structure of several annular spray pipes provided by this utility model;

[0018] Figure 4 The main structural view provided for this utility model.

[0019] In the diagram: 1. Fan; 2. Water tank; 3. First waste gas conveying pipe; 4. First shut-off valve; 5. Bag filter; 6. Second waste gas conveying pipe; 7. Second shut-off valve; 8. Absorption tower; 9. Exhaust pipe; 10. First water pump; 11. Water supply pipe; 12. Third shut-off valve; 13. Annular spray pipe; 14. Connecting pipe; 15. Spray head; 16. Activated carbon packing; 17. Heat exchanger; 18. Waste gas inlet pipe; 19. Low-temperature waste gas conveying pipe; 20. Second water pump; 21. Cold water inlet pipe; 22. Absorption water conveying pipe. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Please refer to the appendix. Figures 1-4 The present invention provides a waste aluminum smelting waste gas purification device, including a blower 1, a water storage tank 2 and a waste gas inlet pipe 18. The output end of the blower 1 is connected to a first waste gas purification component, the first waste gas purification component is connected to a second waste gas purification component, a third waste gas purification component is fixed on the second waste gas purification component, a heat exchange component is provided between the water storage tank 2 and the waste gas inlet pipe 18, and the waste gas inlet pipe 18 is fixedly connected to the input end of the blower 1 through the heat exchange component.

[0022] The first exhaust gas purification component includes a first exhaust gas conveying pipe 3. One end of the first exhaust gas conveying pipe 3 is fixedly connected to the output end of the fan 1. A first shut-off valve 4 is fixedly installed on the pipe body of the first exhaust gas conveying pipe 3. A bag filter 5 is fixedly connected to the end of the first exhaust gas conveying pipe 3. Specifically, when the fan 1 is running, the exhaust gas can be conveyed through the first exhaust gas conveying pipe 3 to the bag filter 5 for the first purification operation. The filter bag captures smoke and fine particulate matter, which can effectively remove most of the dust in the waste aluminum smelting exhaust gas.

[0023] The second exhaust gas purification component includes a second exhaust gas conveying pipe 6, which is fixedly connected to the output end of the bag filter 5. A second shut-off valve 7 is fixedly installed on the body of the second exhaust gas conveying pipe 6. An absorption tower 8 is fixedly connected to the end of the second exhaust gas conveying pipe 6, and an exhaust pipe 9 is fixedly connected to the top of the absorption tower 8. Specifically, the exhaust gas purified by the bag filter 5 can be conveyed back to the absorption tower 8 through the second exhaust gas conveying pipe 6.

[0024] The second waste gas purification component also includes a first water pump 10. The input end of the first water pump 10 is connected to a pipe at the bottom of the side end of the water storage tank 2. The output end of the first water pump 10 is fixedly connected to a water supply pipe 11. A third shut-off valve 12 is fixedly installed on the body of the water supply pipe 11. The top end of the water supply pipe 11 passes through the middle of the absorption tower 8. Several annular spray pipes 13 are fixedly installed in the middle of the inner wall of the absorption tower 8. The several annular spray pipes 13 are fixedly connected to each other through a connecting pipe 14. Several spray heads 15 are fixedly connected to the bottom of each of the several annular spray pipes 13. The top is fixedly connected to the annular spray pipe 13. Specifically, when the first water pump 10 is running, it can extract the absorption water stored in the water storage tank 2, and then pump it into the annular spray pipe 13 through the water delivery pipe 11. Then it enters into several annular spray pipes 13 through the connecting pipe 14, and finally is sprayed evenly by several spray heads 15. Thus, the waste gas entering the absorption tower 8 can be purified in a second stage. By contacting the absorption water with the waste gas, acidic gases (such as hydrogen chloride) and other soluble pollutants in the waste gas can be effectively removed.

[0025] The third waste gas purification component includes activated carbon packing 16, which is filled and fixed inside the upper part of the absorption tower 8. Specifically, the waste gas purified by the absorption water can undergo a third purification operation through the activated carbon packing 16. The activated carbon can effectively purify the waste gas containing organic pollutants or odors through adsorption.

[0026] In summary, this device has multiple purification functions for waste gas, which is beneficial to the treatment effect of waste aluminum smelting waste gas.

[0027] The heat exchange assembly includes a heat exchanger 17. A waste gas inlet pipe 18 is fixedly connected to the heat medium inlet of the heat exchanger 17. A low-temperature waste gas conveying pipe 19 is fixedly connected to the cold medium outlet of the heat exchanger 17. The low-temperature waste gas conveying pipe 19 is fixedly connected to the input end of the fan 1. A second water pump 20 is fixedly connected to the cold medium inlet of the heat exchanger 17. A cold water inlet pipe 21 is fixedly connected to the input end of the second water pump 20. An absorption water conveying pipe 22 is fixedly connected to the heat medium outlet of the heat exchanger 17. The end of the absorption water conveying pipe 22 away from the heat exchanger 17 is fixedly connected to the top of the water storage tank 2. Specifically, high-temperature waste gas can enter the heat exchanger 17 through the waste gas inlet pipe 18, and absorption water can be pumped into the heat exchanger 17 by the second water pump 20, so that the high-temperature waste gas and the low-temperature absorption water can exchange heat, thereby effectively cooling the high-temperature waste gas. This can effectively prevent the high-temperature waste gas from causing continuous high-temperature damage to the bag filter 5, activated carbon packing 16, etc., and is beneficial to the treatment of waste aluminum smelting waste gas.

[0028] The usage process of this utility model is as follows: During use, high-temperature exhaust gas can enter the heat exchanger 17 through the exhaust gas inlet pipe 18, and the absorption water can be pumped into the heat exchanger 17 by the second water pump 20, so that the high-temperature exhaust gas and the low-temperature absorption water can exchange heat, thereby effectively cooling the high-temperature exhaust gas. When the fan 1 is running, the exhaust gas can be transported to the bag filter 5 through the first exhaust gas conveying pipe 3 for the first stage of purification. The filter bag captures smoke and fine particulate matter, which can effectively remove most of the dust in the waste aluminum smelting exhaust gas. The exhaust gas purified by the bag filter 5 can be transported again to the absorption tower 8 through the second exhaust gas conveying pipe 6. Then the first water pump 10 is running. During operation, the absorbent water stored in the storage tank 2 can be extracted and pumped into the annular spray pipe 13 through the water supply pipe 11. Then, it enters several annular spray pipes 13 through the connecting pipe 14 and is finally sprayed evenly by several spray heads 15. This allows for a second purification of the waste gas entering the absorption tower 8. By contacting the absorbent water with the waste gas, acidic gases (such as hydrogen chloride) and other soluble pollutants in the waste gas can be effectively removed. The waste gas purified by the absorbent water can then undergo a third purification process through the activated carbon packing 16. The activated carbon adsorption can effectively purify the organic pollutants or odors in the waste gas. The waste gas that has undergone multiple purifications can then be discharged through the exhaust pipe 9.

[0029] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art can modify this utility model or modify it into an equivalent technical solution using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solution of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A waste gas purification device for aluminum smelting, comprising a fan (1), a water storage tank (2), and a waste gas inlet pipe (18), characterized in that: The output pipe of the fan (1) is connected to a first exhaust gas purification component, the first exhaust gas purification component is connected to a second exhaust gas purification component, a third exhaust gas purification component is fixed on the second exhaust gas purification component, a heat exchange component is provided between the water tank (2) and the exhaust gas inlet pipe (18), and the exhaust gas inlet pipe (18) is fixedly connected to the input end of the fan (1) through the heat exchange component.

2. The waste gas purification device for aluminum smelting according to claim 1, characterized in that: The first exhaust gas purification component includes a first exhaust gas conveying pipe (3), one end of which is fixedly connected to the output end of the fan (1), a first shut-off valve (4) is fixedly attached to the body of the first exhaust gas conveying pipe (3), and a bag filter (5) is fixedly connected to the end of the first exhaust gas conveying pipe (3).

3. The waste gas purification device for aluminum smelting according to claim 2, characterized in that: The second exhaust gas purification component includes a second exhaust gas conveying pipe (6), which is fixedly connected to the output end of the bag filter (5). A second shut-off valve (7) is fixedly attached to the body of the second exhaust gas conveying pipe (6). An absorption tower (8) is fixedly connected to the end of the second exhaust gas conveying pipe (6), and an exhaust pipe (9) is fixedly connected to the top of the absorption tower (8).

4. The waste gas purification device for aluminum smelting according to claim 3, characterized in that: The second exhaust gas purification component also includes a first water pump (10), the input end of the first water pump (10) is connected to the bottom pipe at the side end of the water storage tank (2), the output end of the first water pump (10) is fixedly connected to a water supply pipe (11), and a third shut-off valve (12) is fixedly attached to the body of the water supply pipe (11).

5. The waste gas purification device for aluminum smelting according to claim 4, characterized in that: The top of the water supply pipe (11) penetrates the middle of the absorption tower (8). Several annular spray pipes (13) are fixed in the middle of the inner wall of the absorption tower (8). Several annular spray pipes (13) are fixedly connected to each other through a connecting pipe (14). Several spray heads (15) are fixedly connected to the bottom of several annular spray pipes (13). The top of the water supply pipe (11) is fixedly connected to the annular spray pipes (13).

6. The waste gas purification device for aluminum smelting according to claim 5, characterized in that: The third waste gas purification component includes activated carbon packing (16), which is filled and fixed inside the absorption tower (8) above.

7. The waste gas purification device for aluminum smelting according to claim 1, characterized in that: The heat exchange assembly includes a heat exchanger (17), the exhaust gas inlet pipe (18) is fixedly connected to the heat medium inlet of the heat exchanger (17), the cold medium outlet of the heat exchanger (17) is fixedly connected to a low temperature exhaust gas conveying pipe (19), and the low temperature exhaust gas conveying pipe (19) is fixedly connected to the input end of the fan (1).

8. The waste gas purification device for aluminum smelting according to claim 7, characterized in that: The inlet of the heat exchanger (17) is fixedly connected to a second water pump (20), the input end of the second water pump (20) is fixedly connected to a cold water inlet pipe (21), the outlet of the heat exchanger (17) is fixedly connected to an absorption water conveying pipe (22), and the end of the absorption water conveying pipe (22) away from the heat exchanger (17) is fixedly connected to the top of the water storage tank (2).

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