Tail gas treatment air suction device of electrolytic furnace

Abstract

The utility model discloses a tail gas treatment air suction device of an electrolytic furnace, which comprises an electrolytic furnace main body, an air outlet is arranged on the electrolytic furnace main body, a tail gas treatment device is arranged on the air outlet, and the tail gas treatment device comprises a heating component and an air suction component communicated with the heating component. An exhaust pipeline is arranged on the side, away from the air suction assembly, of the heating assembly, a first partition plate is arranged in the heating assembly, an air inlet cavity is formed by one side of the first partition plate and the inner wall of the heating assembly, a baking cavity is formed by the other side of the first partition plate and the inner wall of the heating assembly, and the baking cavity is used for baking a graphite anode; a large-area heat exchange plate is further arranged on the first partition plate. The tail gas generated by the electrolytic furnace is used for baking the graphite anode, the heat energy of the tail gas is reutilized, the heat transfer area is increased, and the overall energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic furnaces, in particular to a tail gas treatment air suction device for an electrolytic furnace. Background Art

[0002] The exhaust gas treatment suction device of the electrolytic furnace is a device used to capture and treat the exhaust gas generated by the electrolytic furnace. By setting up a suction hood and an air duct, the exhaust gas generated by the electrolytic furnace is collected and discharged after treatment. The suction hood is usually installed above or around the electrolytic furnace to ensure that as much exhaust gas as possible is captured.

[0003] In the existing exhaust gas treatment suction device, the heat energy in the exhaust gas is directly discharged, resulting in a large amount of energy waste, and the heat energy cannot be fully utilized, which increases additional energy consumption and operating costs and has low production efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an exhaust gas treatment air suction device for an electrolytic furnace, which utilizes the exhaust gas generated by the electrolytic furnace to bake the graphite anode, reuses the thermal energy of the exhaust gas for a second time, increases the heat transfer area, and reduces the overall energy consumption.

[0005] In order to solve the above technical problems, the utility model provides an exhaust gas treatment suction device for an electrolytic furnace, comprising an electrolytic furnace main body, an air outlet being provided on the electrolytic furnace main body, and an exhaust gas treatment device being provided on the air outlet, the exhaust gas treatment device comprising a heating component and an air suction component connected to the heating component, an exhaust duct being provided on the side of the heating component away from the air suction component, a first partition being provided in the heating component, one side of the first partition forming an air inlet chamber with the inner wall of the heating component, and the other side of the first partition forming a baking chamber with the inner wall of the heating component, the baking chamber being used for baking graphite anodes, and a large-area heat exchange plate is also provided on the first partition.

[0006] The air suction component comprises an air suction ring, the air suction ring is connected with an air suction duct, and the air suction duct is communicated with the air inlet chamber.

[0007] A cleaning device is also provided between the exhaust duct and the heating assembly. The cleaning device comprises a cleaning chamber and a cover plate provided on the cleaning chamber. The cleaning chamber is communicated with the exhaust duct.

[0008] A second partition is also provided below the heating chamber, and the second partition and the inner wall of the heating component form an exhaust chamber, and the exhaust chamber is communicated with the cleaning chamber.

[0009] A plurality of air suction grooves are arranged on the inner wall of the air suction ring.

[0010] The air outlet is provided with a plurality of first conductive iron plates, and the air suction ring is provided with corresponding mounting grooves.

[0011] One side of the baking chamber is open to the outside, one side of the second partition is provided with a mounting plate extending downward, and the mounting plate is provided with a second conductive iron plate.

[0012] The number of the air suction ducts is 2.

[0013] The first conductive iron plate and the second conductive iron plate are both provided with handles.

[0014] When the utility model is used, the electrolytic furnace will generate a large amount of tail gas during operation, and the tail gas is discharged through the air outlet on the electrolytic furnace body. The suction assembly starts to work, and the suction ring surrounds the air outlet of the electrolytic furnace body. The exhaust gas is captured by a plurality of suction grooves. The exhaust gas collected by the suction ring is transmitted to the heating assembly through the suction duct. The suction duct is connected to the air inlet chamber in the heating assembly. The tail gas first enters the air inlet chamber. The tail gas entering the air inlet chamber heats the large-area heat exchange plate. The anode conductive sheet is placed in the baking chamber, and the large-area heat exchange plate is baked to remove excess moisture. The tail gas then enters the exhaust chamber, and the exhaust chamber is connected to the cleaning chamber to ensure smooth flow of the tail gas. The tail gas in the exhaust chamber enters the cleaning chamber. A cover plate is provided in the cleaning chamber, which can be opened regularly for cleaning and maintenance to remove residual particles and impurities in the tail gas. Finally, the tail gas is discharged through the exhaust duct.

[0015] The beneficial effects brought by the utility model are:

[0016] The utility model utilizes the tail gas generated by the electrolytic furnace to bake the graphite anode, and utilizes the heat energy of the tail gas for a second time, thereby reducing the overall energy consumption.

[0017] The large-area heat exchange plate increases the heat transfer area, thereby significantly improving the heat exchange efficiency.

[0018] The cleaning device can facilitate operators to regularly clean the accumulated dust and sediment, keep the pipeline and the inside of the equipment clean, and ensure smooth airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the tail gas treatment device of the utility model.

[0021] Figure 3 It is a cross-sectional view of the tail gas treatment device of the utility model.

[0022] In the figure: 1. electrolytic furnace body; 2. air outlet; 3. exhaust gas treatment device; 4. heating component; 5. suction component; 6. exhaust duct; 7. first partition; 8. air inlet chamber; 9. baking chamber; 10. large-area heat exchange plate; 11. suction ring; 12. suction duct; 13. cleaning device; 14. cleaning chamber; 15. cover plate; 16. second partition; 17. exhaust chamber; 18. suction slot; 19. first conductive iron plate; 20. mounting slot; 21. mounting plate; 22. second conductive iron plate; 23. handle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] according to Figures 1 to 3 As shown, a tail gas treatment air suction device of an electrolytic furnace of the utility model comprises an electrolytic furnace body 1, an air outlet 2 is provided on the electrolytic furnace body 1, and a tail gas treatment device 3 is provided on the air outlet 2, and the tail gas treatment device 3 comprises a heating component 4 and an air suction component 5 connected to the heating component 4, and an exhaust pipe 6 is provided on the side of the heating component 4 away from the air suction component 5, and a first partition 7 is provided in the heating component 4, and one side of the first partition 7 and the inner wall of the heating component 4 form an air inlet chamber 8, and the other side of the first partition 7 and the inner wall of the heating component 4 form a baking chamber 9, and the baking chamber 9 is used to bake the graphite anode, and a large-area heat exchange plate 10 is also provided on the first partition. The electrolytic furnace body 1 is used to carry out the electrolysis process, and the air outlet 2 is used as a channel for exhaust gas discharge. The tail gas treatment device 3 is connected to the air outlet 2 to collect a large amount of carbon dioxide and other volatiles generated during electrolysis, and the heating component 4 uses these gases to heat the graphite anode to remove internal moisture. The first partition 7 in the heating assembly 4 divides the internal space into an air inlet chamber 8 and a baking chamber 9. The air inlet chamber 8 receives the exhaust gas, and the baking chamber 9 further processes the exhaust gas and uses it to bake the graphite anode. The large-area heat exchange plate 10 on the partition increases the heat exchange area and improves the heating efficiency. The treated exhaust gas is discharged through the exhaust pipe 6 at the far end of the heating assembly 4. The exhaust pipe 6 is made of high-temperature corrosion-resistant materials to ensure that the exhaust gas is discharged smoothly in a high-temperature environment.

[0025] The suction assembly 5 includes a suction ring 11, to which is connected a suction duct 12, which is communicated with the air inlet chamber 8. The suction ring 11 is made of high-temperature resistant and corrosion-resistant materials to ensure long-term use and stability in high-temperature environments. The annular design ensures that it can evenly surround the electrolytic furnace body 1, and maximize the capture and collection of exhaust gas discharged from the electrolytic furnace body 1. A plurality of suction grooves 18 are provided on the inner wall of the suction ring 11, and these suction grooves 18 are evenly distributed on the inner wall of the suction ring 11, so as to effectively guide the exhaust gas into the suction duct 12. The wind speed at the suction grooves 18 is 8-9m / s, which matches the geothermal airflow generated by electrolysis, effectively absorbs harmful gases, and reduces the absorption of volatile particulate matter. There are two suction ducts 12, which are respectively connected to the suction ring 11 and the air inlet chamber 8. The structure of the double suction ducts 12 can improve the suction speed and processing capacity of the exhaust gas, ensuring that the exhaust gas can be quickly sucked in and transmitted to the heating component 4 for processing.

[0026] A cleaning device 13 is also provided between the exhaust duct 6 and the heating assembly 4. The cleaning device 13 includes a cleaning chamber 14 and a cover plate 15 provided on the cleaning chamber 14. The cleaning chamber 14 is communicated with the exhaust duct 6. As the area of ​​the heat exchange plate increases, the wind speed in the device decreases, and thus sediment is generated under the exhaust duct 6. Therefore, the cleaning chamber 14 is provided, and the user only needs to open the cover plate 15 to clean the interior.

[0027] A second partition 16 is also provided below the heating chamber. The second partition 16 and the inner wall of the heating component 4 form an exhaust chamber 17. The exhaust chamber 17 is connected to the cleaning chamber 14. Through such a structure, the baking chamber 9 can be heated evenly, and the exhaust gas in the air inlet chamber 8 can be effectively guided to the cleaning device 13 for further discharge. This can not only improve the working efficiency of the exhaust gas treatment device 3, but also extend the service life of the equipment, ensuring the efficient and stable operation of the entire exhaust gas treatment system.

[0028] The air outlet 2 is provided with a plurality of first conductive iron plates 19, and the air suction ring 11 is provided with corresponding mounting grooves 20. The mounting grooves 20 minimize the gaps, reduce the siphon phenomenon when the hot air rises, and achieve high-efficiency air suction. One side of the baking chamber 9 is open to the outside, and one side of the second partition 16 is provided with a mounting plate 21 extending downward, and the mounting plate 21 is provided with a second conductive iron plate 22. The first conductive iron plate 19 and the second conductive iron plate 22 are both provided with handles 23. The first conductive iron plate 19 and the second conductive iron plate 22 are both fixed on the anode graphite sheet, and the handles 23 can be conveniently placed in the baking chamber 9.

[0029] When the utility model is used, the electrolytic furnace will generate a large amount of tail gas during operation, and the tail gas is discharged through the air outlet 2 on the electrolytic furnace body 1. The air suction component 5 starts to work, and the air suction ring 11 surrounds the air outlet 2 of the electrolytic furnace body 1. The exhaust gas is captured by a plurality of air suction grooves 18. The exhaust gas collected by the air suction ring 11 is transmitted to the heating component 4 through the air suction duct 12. The air suction duct 12 is connected to the air inlet chamber 8 in the heating component 4. The tail gas first enters the air inlet chamber 8. The tail gas entering the air inlet chamber 8 heats the large-area heat exchange plate 10. The anode conductive sheet is placed in the baking chamber 9, and the large-area heat exchange plate 10 bakes it to remove excess moisture. Then the tail gas enters the exhaust chamber 17, and the exhaust chamber 17 is connected to the cleaning chamber 14 to ensure smooth flow of the tail gas. The tail gas in the exhaust chamber 17 enters the cleaning chamber 14, and the cleaning chamber 14 is provided with a cover plate 15, which can be opened regularly for cleaning and maintenance to remove residual particles and impurities in the tail gas. Finally, the exhaust gas is discharged through the exhaust pipe 6.

[0030] The beneficial effects brought by the utility model are:

[0031] The utility model utilizes the tail gas generated by the electrolytic furnace to bake the graphite anode, and utilizes the heat energy of the tail gas for a second time, thereby reducing the overall energy consumption.

[0032] The large-area heat exchange plate increases the heat transfer area, thereby significantly improving the heat exchange efficiency.

[0033] The cleaning device can facilitate operators to regularly clean the accumulated dust and sediment, keep the pipeline and the inside of the equipment clean, and ensure smooth airflow.

[0034] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An exhaust gas treatment air suction device for an electrolytic furnace, comprising an electrolytic furnace body, an air outlet being provided on the electrolytic furnace body, and an exhaust gas treatment device being provided on the air outlet, characterized in that: The exhaust gas treatment device includes a heating component and an air suction component connected to the heating component. An exhaust duct is provided on the side of the heating component away from the air suction component. A first partition is provided in the heating component. One side of the first partition forms an air inlet chamber with the inner wall of the heating component, and the other side of the first partition forms a baking chamber with the inner wall of the heating component. The baking chamber is used to bake the graphite anode. A large-area heat exchange plate is also provided on the first partition.

2. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 1, characterized in that: The air suction component comprises an air suction ring, the air suction ring is connected with an air suction duct, and the air suction duct is communicated with the air inlet chamber.

3. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 1, characterized in that: A cleaning device is also provided between the exhaust duct and the heating assembly. The cleaning device comprises a cleaning chamber and a cover plate provided on the cleaning chamber. The cleaning chamber is communicated with the exhaust duct.

4. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 2, characterized in that: A second partition is also provided below the baking chamber, and the second partition and the inner wall of the heating component form an exhaust chamber, and the exhaust chamber is communicated with the cleaning chamber.

5. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 2, characterized in that: A plurality of air suction grooves are arranged on the inner wall of the air suction ring.

6. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 4, characterized in that: The air outlet is provided with a plurality of first conductive iron plates, and the air suction ring is provided with corresponding mounting grooves.

7. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 6, characterized in that: One side of the baking chamber is open to the outside, one side of the second partition is provided with a mounting plate extending downward, and the mounting plate is provided with a second conductive iron plate.

8. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 2, characterized in that: The number of the air suction ducts is 2.

9. The exhaust gas treatment air suction device for an electrolytic furnace according to claim 7, characterized in that: The first conductive iron plate and the second conductive iron plate are both provided with handles.

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