A device for treating smelting fumes of recycled aluminum

Abstract

The application discloses a regenerative aluminum smelting flue gas treatment device, which comprises a treatment frame, a filter adsorption assembly installed in the treatment frame, an air inlet frame communicated with one end of the treatment frame, and an exhaust guide frame communicated with the other end of the treatment frame away from the air inlet frame. The filter adsorption assembly comprises a filter assembly and an activated carbon adsorption assembly. The synchronous rotation operation of the filter frame and the activated carbon cylinder is realized through the motor gear meshing linkage structure. The defects of the traditional smelting flue gas filter equipment, such as easy dust accumulation, easy hole blockage and need for shutdown cleaning, are solved through the combination of the wet spraying flushing and the sponge dynamic wiping structure. Through the sealing arc block and the water blocking arc plate multi-group sealing flow guide structure, the problems of flue gas short circuit and water mist overflow are effectively eliminated, the aluminum ash and dust can be continuously intercepted, and the high-temperature sparks can be quenched, so that the pretreatment effect is stable. The device is automatically cleaned throughout the process, does not need frequent manual maintenance, and can adapt to the production scenes of the continuous smelting of the regenerative aluminum and the large fluctuation of the flue gas working condition.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment technology, specifically to a device for treating flue gas from recycled aluminum smelting. Background Technology

[0002] Recycled aluminum is a type of circular non-ferrous metal material. Compared to primary aluminum production, it has advantages such as lower energy consumption and lower carbon emissions, and is widely used in the aluminum processing industry. During the smelting process of recycled aluminum, the surface of the waste aluminum raw materials is covered with oil, coatings, and impurities. High-temperature smelting produces flue gas with complex components. The flue gas not only contains solid particles such as aluminum ash and metal oxides, but also high-temperature sparks, trace amounts of acidic gases, heavy metals, and persistent organic pollutants such as dioxins. If it is directly emitted without effective purification, it can easily cause dust pollution and air toxicity, and there is also a safety hazard of sparks igniting the downstream purification equipment.

[0003] Currently, the mainstream treatment process for flue gas from recycled aluminum smelting mostly adopts a combination of baghouse dust collection and fixed activated carbon adsorption. Baghouse dust collectors have poor tolerance to high-temperature flue gas, and sparks carried by the smelting flue gas can easily burn the filter bags. In addition, aluminum ash is highly adhesive, and the filter bags are prone to caking and clogging, requiring frequent shutdowns for cleaning and replacement of filter media, making them unsuitable for the continuous production conditions of recycled aluminum production lines. On the other hand, fixed activated carbon adsorption structures have obvious defects. Flue gas is prone to flow deviation and short-circuiting, and the activated carbon can become locally saturated quickly, resulting in low adsorption efficiency, high replacement frequency, and high operation and maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide a device for treating flue gas from recycled aluminum smelting to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a recycled aluminum smelting flue gas treatment device, comprising a treatment frame and a filter adsorption assembly installed inside the treatment frame, wherein one end of the treatment frame is connected to an air inlet frame, and the other end of the treatment frame away from the air inlet frame is connected to an exhaust guide frame, and the filter adsorption assembly comprises a filter assembly and an activated carbon adsorption assembly.

[0006] Preferably, the filter assembly includes a filter frame with filter holes on its outer side. A rotating ring is fixedly installed at one end of the filter frame, and an internal toothed ring is fixedly installed at the end of the rotating ring away from the filter frame. The rotating ring is rotatably and sealingly installed inside the side wall of the processing frame. The filter frame is located inside the processing frame. An inner circular plate is installed inside the internal toothed ring, and a connecting bent rod is fixedly installed between the processing frame and the inner circular plate.

[0007] Preferably, a sealing arc block one is fixedly installed at the top of the inner cavity of the processing frame, and two water-blocking arc blocks two are symmetrically fixedly installed at the bottom of the inner cavity of the processing frame. The outer side of the filter frame is in contact with the side of the sealing arc block one and the water-blocking arc block two away from the processing frame.

[0008] Preferably, the activated carbon adsorption assembly includes an activated carbon mounting frame, inside which two rotating plates are rotatably mounted, and activated carbon cylinders are mounted on opposite sides of the two rotating plates. An air inlet groove is provided on one side of the activated carbon mounting frame, and an air outlet groove is provided on the other side of the activated carbon mounting frame. One end of the activated carbon mounting frame is fixedly connected to one side of the air inlet frame.

[0009] Preferably, one of the rotating plates is rotatably mounted on one side of the inner circular plate, and a transmission gear is fixedly mounted on one side of the rotating plate. The outer side of the transmission gear meshes with the inner side of the internal gear ring. A protective cover is fixedly mounted on the outer side of the processing frame, and a drive motor is fixedly mounted on the outer side of the protective cover. The output end of the drive motor is fixedly connected to one side of the transmission gear.

[0010] Preferably, the processing frame is equipped with a water spraying assembly, which includes a guide pipe 1, the bottom of which is connected to multiple guide pipes 2, the bottom of which is connected to a water spray box, both sides of which are fixedly installed with water-blocking arc covers, and the bottom of which is fixedly connected to multiple water spray heads. One end of the guide pipe 1 is fixedly installed on the inner side of the air inlet frame, and the end of the guide pipe 1 installed on the inner side of the air inlet frame is connected to an external water pipe. Two water-blocking arc plates are symmetrically fixedly installed at the bottom of the inner cavity of the processing frame. The bottom of the water-blocking arc cover is in contact with the inner side of the filter frame, and the top of the water-blocking arc plate is in contact with the outer side of the filter frame. A drain pipe is provided at the bottom of the processing frame.

[0011] Preferably, ear plates are fixedly installed on both sides of the water-blocking arc cover, and a sponge sheet is fixedly installed at the bottom of the ear plate, with the side of the sponge sheet away from the ear plate in contact with the inner side of the filter frame.

[0012] Preferably, sealing arc plates are fixedly installed at the top and bottom of the activated carbon mounting frame, and the outer side of the sealing arc plate is in contact with the inner side of the filter frame.

[0013] Preferably, the end of the air inlet frame away from the processing frame is connected to an air inlet guide frame, and the end of the exhaust port frame away from the processing frame is connected to an exhaust guide frame.

[0014] Preferably, the bottom of the air inlet frame and the exhaust port frame are both fixedly installed with support legs, the bottom of the support legs are fixedly installed with support plates, and the back of the processing frame, the air inlet frame and the exhaust port frame are sealed with sealing end caps.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By adopting a motor-gear meshing linkage structure, the filter frame and activated carbon cylinder rotate synchronously. Combined with a wet spray flushing and sponge dynamic wiping structure, it completely solves the defects of traditional smelting flue gas filtration equipment, such as easy dust accumulation, easy clogging, and the need for shutdown for cleaning. Through multiple sets of sealing and guiding structures such as sealing arc blocks and water-blocking arc plates, it effectively prevents flue gas short circuits and water mist overflow, continuously intercepts aluminum ash and dust, and quenches high-temperature sparks, resulting in stable pretreatment effects. The equipment is fully automatic and self-cleaning, requiring no frequent manual maintenance. It can adapt to production scenarios with continuous smelting of recycled aluminum and large fluctuations in flue gas conditions, significantly reducing equipment failure rate and operation and maintenance costs.

[0016] Furthermore, the integrated wet filtration and dynamic activated carbon adsorption structure, relying on a linked rotation design, ensures that the activated carbon cylinder contacts the flue gas without any dead angles. This effectively solves the problems of adsorption blind spots and incomplete purification found in traditional fixed adsorption devices, and can efficiently remove particulate matter, heavy metals, dioxins, and acidic pollutants. The overall equipment has a compact structure and strong airtightness. The external protective cover protects the drive structure and extends its service life. At the same time, the wet pretreatment can cool down and retard the flame in advance, effectively protecting the downstream adsorption components. The entire device has high purification efficiency and stable operation, ensuring that the flue gas meets emission standards in the long term. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention without the protective cover.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention with the sealing cap removed.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the filter frame of the present invention.

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the activated carbon adsorption component of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the water spray component of the present invention.

[0024] In the diagram: 1. Processing frame; 2. Protective cover; 3. Air inlet guide frame; 4. Air inlet frame; 5. Exhaust guide frame; 6. Exhaust port frame; 7. Support leg; 8. Support plate; 9. External water pipe; 10. Connecting bent rod; 11. Drive motor; 12. Transmission gear; 13. Internal gear ring; 14. Inner circular plate; 15. Sealing end cap; 16. Rotating plate; 17. Sealing arc plate; 18. Water-blocking arc plate; 19. Water-blocking arc cover; 20. Spray box; 21. Water-blocking arc block two; 22. Guide pipe one; 23. Guide pipe two; 24. Filter frame; 25. Filter hole; 26. Activated carbon mounting frame; 27. Sealing arc block one; 28. Rotating ring; 29. ​​Spray head; 30. Ear plate; 31. Sponge sheet; 32. Air inlet groove; 33. Air outlet groove; 34. Activated carbon cylinder; 35. Drain pipe. Detailed Implementation

[0025] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-7This invention provides a technical solution: a recycled aluminum smelting flue gas treatment device, including a treatment frame 1 and a filter adsorption assembly installed inside the treatment frame 1. One end of the treatment frame 1 is connected to an air inlet frame 4, and the other end of the treatment frame 1 away from the air inlet frame 4 is connected to an exhaust guide frame 5. The filter adsorption assembly includes a filter assembly and an activated carbon adsorption assembly. The filter assembly includes a filter frame 24, with filter holes 25 on the outer side of the filter frame 24. A rotating ring 28 is fixedly installed at one end of the filter frame 24, and an internal toothed ring 13 is fixedly installed at the other end of the rotating ring 28 away from the filter frame 24. The rotating ring 28 is rotatably and sealingly installed inside the side wall of the treatment frame 1. The filter frame 24 is located inside the treatment frame 1. An inner circular plate 14 is installed inside the internal toothed ring 13. A connecting bent rod 10 is fixedly installed between the treatment frame 1 and the inner circular plate 14. A sealing arc block 27 is fixedly installed at the top of the inner cavity of the treatment frame 1, and two water-blocking arc blocks 21 are symmetrically fixedly installed at the bottom of the inner cavity of the treatment frame 1. The outer side of the filter frame 24 and the sealing arc blocks... The activated carbon adsorption assembly includes an activated carbon mounting frame 26, with two rotating plates 16 rotatably mounted inside the activated carbon mounting frame 26. Activated carbon cylinders 34 are mounted on opposite sides of the two rotating plates 16. An air inlet groove 32 is provided on one side of the activated carbon mounting frame 26, and an air outlet groove 33 is provided on the other side. One end of the activated carbon mounting frame 26 is fixedly connected to one side of the air inlet frame 4. One of the rotating plates 16 is rotatably and sealed on one side of the inner circular plate 14, and a transmission gear 12 is fixedly mounted on one side of the rotating plate 16. The outer side of the transmission gear 12 meshes with the inner side of the inner gear ring 13. A protective cover 2 is fixedly mounted on the outer side of the treatment frame 1, and a drive motor 11 is fixedly mounted on the outer side of the protective cover 2. The output end of the drive motor 11 is fixedly connected to one side of the transmission gear 12. An air inlet guide frame 3 is connected to the end of the air inlet frame 4 away from the treatment frame 1, and an exhaust guide frame 5 is connected to the end of the exhaust port frame 6 away from the treatment frame 1.

[0027] The working principle of the above technical solution: The whole set of equipment forms a complete flue gas intake channel through the air intake guide frame 3 and the air intake frame 4. The complex flue gas with high temperature, dust and sparks generated during the recycled aluminum smelting process can be smoothly introduced into the purification chamber of the treatment frame 1. After purification, the clean flue gas is finally discharged in a directional high altitude through the exhaust port frame 6 and the exhaust guide frame 5. The bottom of the air intake frame 4 and the exhaust port frame 6 are equipped with support legs 7 and support plates 8. The multi-point support structure greatly improves the overall stability of the equipment and effectively avoids the displacement and abnormal noise problems caused by long-term vibration operation of the equipment. The back of the treatment frame 1, the air intake frame 4, and the exhaust port frame 6 are uniformly sealed with the sealing end cap 15.

[0028] To achieve automated continuous purification operations, a protective cover 2 is fixedly installed on the outside of the processing frame 1. This provides dustproof, high-temperature, and corrosion protection for the internal transmission structure, extending the service life of the transmission components. A drive motor 11 is fixedly installed on the outside of the protective cover 2. The output end of the drive motor 11 passes through the protective cover 2 and is fixedly connected to the transmission gear 12, providing a power source for the entire rotary purification structure. After the equipment starts, the drive motor 11 drives the transmission gear 12 to rotate at a constant speed. By utilizing the meshing structure between the transmission gear 12 and the inner gear ring 13, precise gear transmission is achieved, thereby driving the large-diameter inner gear ring 13 to rotate smoothly as a whole. The inner gear ring 13 is fixed as a whole with the rotating ring 28 and the filter frame 24, so it can synchronously drive the filter frame 24 to perform a uniform sealed rotational motion inside the processing frame 1. At the same time, the transmission gear 12 drives the rotating plate 16 to rotate synchronously, so that the activated carbon cylinder 34 assembled between the rotating plates 16 rotates synchronously with the filter components, realizing the integrated linkage operation of the filtration and adsorption dual components. Among them, the connecting bent rod 10, which is fixedly connected to the processing frame 1 and the inner circular plate 14, plays a key positioning and support role.

[0029] After the recycled aluminum smelting flue gas enters the cavity, it first comes into contact with the high-speed rotating filter frame 24. Relying on the densely arranged filter holes 25 on the outside of the filter frame 24, the flue gas undergoes mechanical coarse filtration, which can effectively intercept large particles of aluminum ash, smelting slag, suspended dust and high-temperature combustion sparks mixed in the flue gas. This prevents large particles of impurities and high-temperature sparks from entering the back-end adsorption structure from the source, preventing activated carbon burnout and channel blockage. After the flue gas is treated by the dual purification process of pre-wet coarse filtration and dynamic activated carbon deep adsorption, the internal particulate matter and toxic and harmful gases are basically completely removed, becoming clean flue gas that meets the standards. Under the negative pressure of the system, the clean flue gas flows smoothly through the exhaust port frame 6 and is finally discharged outward in an orderly manner through the exhaust guide frame 5. The entire purification process of recycled aluminum smelting flue gas is completed in a complete and efficient manner, and the equipment can operate continuously without interruption.

[0030] In another implementation scheme, such as Figures 1-7As shown, a water spray assembly is installed inside the processing frame 1. The water spray assembly includes a guide pipe 22, the bottom of which is connected to multiple guide pipes 23. The bottom of each guide pipe 23 is connected to a water spray box 20. Water baffles 19 are fixedly installed on both sides of the water spray box 20. Multiple water spray heads 29 are fixedly connected to the bottom of the water spray box 20. One end of the guide pipe 22 is fixedly installed inside the air inlet frame 4. The end of the guide pipe 22 installed inside the air inlet frame 4 is connected to an external water pipe 9. The bottom of the inner cavity of the processing frame 1 is symmetrically fixedly installed with... Two water-blocking arc plates 18 are provided. The bottom of the water-blocking arc cover 19 is in contact with the inner side of the filter frame 24, and the top of the water-blocking arc plate 18 is in contact with the outer side of the filter frame 24. A drain pipe 35 is provided at the bottom of the treatment frame 1. Ear plates 30 are fixedly installed on both sides of the water-blocking arc cover 19. A sponge sheet 31 is fixedly installed at the bottom of the ear plate 30, and the side of the sponge sheet 31 away from the ear plate 30 is in contact with the inner side of the filter frame 24. A sealing arc plate 17 is fixedly installed at the top and bottom of the activated carbon mounting frame 26. The outer side of the sealing arc plate 17 is in contact with the inner side of the filter frame 24.

[0031] An external clean water source is stably connected to a guide pipe 22 fixed inside the air inlet frame 4 via an external water pipe 9. The water flow is evenly distributed through the guide pipe 22 to multiple sets of guide pipes 23, and finally delivered to each spray box 20. This provides a continuous and uniform water supply for subsequent wet spray cooling, dust washing, and spark quenching operations, ensuring the stable operation of the pretreatment process. During the filtration operation, multiple spray heads 29 arranged in an array at the bottom of the spray box 20 continuously spray atomized water downwards, providing full coverage spray washing of the entire inner area of ​​the filter frame 24, keeping the filter holes 25 constantly moist and significantly reducing dust adhesion. The integrated water-blocking arc cover 19 on both sides of the spray box 20 effectively restrains the spray water flow, preventing water mist from spreading and overflowing. At the same time, the sponge sheet 31 mounted at the bottom of the ear plate 30 is always tightly attached to the inner wall of the filter frame 24 and rotates synchronously with the filter frame 24 to dynamically wipe and clean the filter holes 25, which can promptly remove adhering sticky dust and aluminum sludge. This design completely solves the drawbacks of traditional fixed filters, such as easy clogging and the need for shutdown for cleaning. At the same time, the sealing arc block 27 at the top of the inner cavity of the treatment frame 1, the water-blocking arc block 21 symmetrically arranged at the bottom, and the water-blocking arc plate 18 are respectively attached to the inner and outer walls of the filter frame 24 to form a closed flow channel. This forces all the flue gas to pass through the filter holes 25 to complete the filtration, eliminating the problems of flue gas short circuit and insufficient filtration. At the same time, wet spraying is used to quickly reduce the temperature of the flue gas and completely quench residual sparks, completing the flue gas pretreatment process. During the entire spraying filtration process, the wastewater generated by rinsing the filter frame 24, the aluminum dust and impurities sludge stripped by the water flow are all collected at the bottom of the inner cavity of the treatment frame 1 under the action of gravity. The low-lying structure at the bottom can realize the centralized collection of sewage and sludge, and finally discharge them through the drainage pipe 35 opened at the bottom of the treatment frame 1. The discharged dusty sewage can be connected to an external sedimentation tank for solid-liquid separation treatment. Water resources can be recycled and reused, and waste residue can be collected and treated in a centralized manner, improving resource utilization.

[0032] In another implementation scheme, such as Figures 1-7 As shown, support legs 7 are fixedly installed at the bottom of both the air inlet frame 4 and the exhaust frame 6, and support plates 8 are fixedly installed at the bottom of the support legs 7. Sealing end caps 15 are installed on the back of the processing frame 1, the air inlet frame 4 and the exhaust frame 6.

[0033] The device can be supported by setting 7 and 8, ensuring its stable operation.

[0034] Working principle and steps: The entire device forms a complete flue gas intake channel through the inlet guide frame 3 and the inlet frame 4. The complex flue gas, which is high temperature, dusty, and contains sparks, generated during the recycled aluminum smelting process, can be smoothly introduced into the purification chamber of the treatment frame 1. After purification, the clean flue gas is finally discharged at high altitude through the exhaust port frame 6 and the exhaust guide frame 5. The bottom of both the inlet frame 4 and the exhaust port frame 6 are equipped with support legs 7 and support plates 8. The multi-point support structure greatly improves the overall stability of the equipment and effectively avoids the problems of displacement and abnormal noise caused by long-term vibration operation of the equipment. The back of the inlet frame 4 and the exhaust port frame 6 are uniformly sealed with the sealing end cap 15, realizing a fully sealed design of the purification chamber, eliminating the problem of flue gas leakage and overflow polluting the workshop environment. At the same time, the equipment is equipped with an independent water supply system. The external clean water source is stably connected to the guide pipe 22 fixed inside the air inlet frame 4 through the external water pipe 9. The water flow is evenly distributed through the guide pipe 22 to multiple sets of guide pipes 23, and finally delivered to each spray box 20, providing a continuous and uniform water supply for subsequent wet spray cooling, dust washing and spark quenching operations, ensuring the stable operation of the pretreatment process.

[0035] To achieve automated continuous purification operations, a protective cover 2 is fixedly mounted on the outside of the processing frame 1. This provides dustproof, high-temperature, and corrosion protection for the internal transmission structure, extending the service life of the transmission components. A drive motor 11 is fixedly installed on the outside of the protective cover 2. The output end of the drive motor 11 passes through the protective cover 2 and is fixedly connected to the transmission gear 12, providing a power source for the entire rotary purification structure. After the equipment starts, the drive motor 11 drives the transmission gear 12 to rotate at a uniform speed. Utilizing the meshing structure between the transmission gear 12 and the inner gear ring 13, precise gear transmission is achieved, thereby driving the large-diameter inner gear ring 13 to rotate smoothly as a whole. The rotating ring 28 and the filter frame 24 are fixed as one piece, so the filter frame 24 can be driven to make uniform sealed rotation motion inside the treatment frame 1. At the same time, the transmission gear 12 drives the rotating plate 16 to rotate synchronously, so that the activated carbon cylinder 34 assembled between the rotating plates 16 rotates synchronously with the filter components, realizing the integrated linkage operation of the filtration and adsorption dual components. Among them, the connecting bent rod 10 that fixes the treatment frame 1 and the inner circular plate 14 plays a key positioning and support role, which can effectively fix the static adsorption cavity structure, isolate the moving and static parts, and avoid structural shaking, offset, and jamming during rotation, ensuring the long-term stable operation of the entire transmission system.

[0036] After the recycled aluminum smelting flue gas enters the cavity, it first comes into contact with the high-speed rotating filter frame 24. Relying on the densely arranged filter holes 25 on the outside of the filter frame 24, the flue gas undergoes mechanical coarse filtration, which can effectively intercept large particles of aluminum ash, smelting slag, suspended dust, and high-temperature combustion sparks mixed in the flue gas. This prevents large particles of impurities and high-temperature sparks from entering the downstream adsorption structure at the source, preventing activated carbon burnout and channel blockage. At the same time as the filtration operation, multiple water nozzles 29 arranged in an array at the bottom of the water spray box 20 continuously spray atomized water downwards, providing full coverage spray rinsing of the entire inner area of ​​the filter frame 24, keeping the filter holes 25 constantly moist, greatly reducing dust adhesion. The water-blocking arc covers 19 integrated on both sides of the water spray box 20 can effectively constrain the spray water flow. To prevent water mist from spreading and overflowing, the sponge sheet 31 mounted at the bottom of the ear plate 30 is always tightly attached to the inner wall of the filter frame 24 and rotates synchronously with the filter frame 24 to dynamically wipe and clean the filter holes 25. This can remove the attached sticky dust and aluminum mud in time, and completely solve the drawbacks of traditional fixed filter screens that are easy to clog and require shutdown for cleaning. At the same time, the sealing arc block 27 at the top of the inner cavity of the treatment frame 1, the water-blocking arc block 21 symmetrically arranged at the bottom, and the water-blocking arc plate 18 are attached to the inner and outer walls of the filter frame 24 respectively to form a closed flow channel, forcing all the flue gas to pass through the filter holes 25 to complete the filtration, eliminating the problems of flue gas short circuit and insufficient filtration. At the same time, wet spraying is used to quickly reduce the flue gas temperature and completely quench residual sparks, completing the flue gas pretreatment process.

[0037] After pretreatment including wet dust removal, cooling, and spark extinguishing, the clean, low-temperature flue gas precisely enters the internal cavity of the activated carbon mounting frame 26. The flue gas is evenly dispersed into the adsorption area through the air inlet groove 32 on the side wall of the activated carbon mounting frame 26. Meanwhile, the rotating plate 16 continuously drives the activated carbon cylinder 34 to rotate at a uniform speed, breaking the static limitations of traditional fixed activated carbon adsorption. This allows the entire adsorption end face of the activated carbon cylinder 34 to alternately contact the flowing flue gas in a 360° omnidirectional manner, eliminating adsorption blind spots and localized saturation problems. Through the porous adsorption of the activated carbon… With these features, it can efficiently capture and adsorb residual fine suspended dust, heavy metal particles, highly toxic dioxins, and trace amounts of acidic harmful gases in flue gas, achieving deep purification of flue gas. The sealing arc plates 17 fixed at the top and bottom of the activated carbon mounting frame 26 are tightly attached to the inner side of the filter frame 24, forming a completely sealed adsorption and purification chamber. This strictly restricts the flue gas flow path, ensuring that all flue gas must be fully adsorbed and purified by the activated carbon cylinder 34 before it can be discharged from the adsorption area through the outlet groove 33. This greatly improves the flue gas purification accuracy and ensures the efficient removal of harmful substances.

[0038] During the entire spray filtration process, the wastewater generated from rinsing the filter frame 24, the aluminum dust and impurities stripped by the water flow, and the sludge are all collected at the bottom of the inner cavity of the treatment frame 1 under the action of gravity. The low-lying structure at the bottom can realize the centralized collection of sewage and sludge, and finally discharge them through the drainage pipe 35 opened at the bottom of the treatment frame 1. The discharged dusty sewage can be connected to the external sedimentation tank for solid-liquid separation treatment. Water resources can be recycled and reused, and waste residue can be collected and treated in a centralized manner, improving resource utilization. After the flue gas is treated by the dual purification process of pre-wet coarse filtration and dynamic activated carbon deep adsorption, the internal particulate matter and toxic and harmful gases are basically completely removed, becoming clean flue gas that meets the standards. Under the negative pressure of the system, the clean flue gas flows smoothly through the exhaust port frame 6, and finally is discharged outward in an orderly manner through the exhaust guide frame 5, completing the entire purification treatment process of recycled aluminum smelting flue gas in a complete and efficient manner. The equipment can operate continuously and without interruption.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating flue gas from recycled aluminum smelting, comprising a treatment frame (1) and a filter adsorption assembly installed inside the treatment frame (1), characterized in that: One end of the processing frame (1) is connected to the air inlet frame (4), and the other end of the processing frame (1) away from the air inlet frame (4) is connected to the exhaust guide frame (5). The filter adsorption assembly includes a filter assembly and an activated carbon adsorption assembly.

2. The recycled aluminum smelting flue gas treatment device according to claim 1, characterized in that: The filter assembly includes a filter frame (24), with filter holes (25) on the outer side of the filter frame (24). A rotating ring (28) is fixedly installed at one end of the filter frame (24), and an internal toothed ring (13) is fixedly installed at the end of the rotating ring (28) away from the filter frame (24). The rotating ring (28) is sealed and rotated inside the side wall of the processing frame (1). The filter frame (24) is located inside the processing frame (1). An inner circular plate (14) is installed inside the internal toothed ring (13). A connecting bent rod (10) is fixedly installed between the processing frame (1) and the inner circular plate (14).

3. The recycled aluminum smelting flue gas treatment device according to claim 2, characterized in that: A sealing arc block one (27) is fixedly installed at the top of the inner cavity of the processing frame (1), and two water-blocking arc blocks two (21) are fixedly installed symmetrically at the bottom of the inner cavity of the processing frame (1). The outer side of the filter frame (24) and the side of the sealing arc block one (27) and the water-blocking arc block two (21) away from the processing frame (1) are in contact.

4. The recycled aluminum smelting flue gas treatment device according to claim 3, characterized in that: The activated carbon adsorption assembly includes an activated carbon mounting frame (26), inside which two rotating plates (16) are rotatably mounted. Activated carbon cylinders (34) are mounted on opposite sides of the two rotating plates (16). An air inlet groove (32) is provided on one side of the activated carbon mounting frame (26), and an air outlet groove (33) is provided on the other side. One end of the activated carbon mounting frame (26) is fixedly connected to one side of the air inlet frame (4).

5. The recycled aluminum smelting flue gas treatment device according to claim 4, characterized in that: One of the rotating plates (16) is sealed and rotated on one side of the inner circular plate (14), and a transmission gear (12) is fixedly installed on one side of the rotating plate (16). The outer side of the transmission gear (12) meshes with the inner side of the internal gear ring (13). A protective cover (2) is fixedly installed on the outer side of the processing frame (1). A drive motor (11) is fixedly installed on the outer side of the protective cover (2). The output end of the drive motor (11) is fixedly connected to one side of the transmission gear (12).

6. The recycled aluminum smelting flue gas treatment device according to claim 5, characterized in that: The processing frame (1) is equipped with a water spraying assembly, which includes a first guide pipe (22). The bottom of the first guide pipe (22) is connected to multiple second guide pipes (23). The bottom of each of the multiple second guide pipes (23) is connected to a water spray box (20). Water baffles (19) are fixedly installed on both sides of the water spray box (20). The bottom of the water spray box (20) is fixedly connected to multiple water spray heads (29). One end of the first guide pipe (22) is fixed... Installed on the inner side of the air inlet frame (4), the guide pipe (22) is connected to an external water pipe (9) at one end of the inner side of the air inlet frame (4), two water baffles (18) are symmetrically fixedly installed at the bottom of the inner cavity of the treatment frame (1), the bottom of the water baffle (19) is in contact with the inner side of the filter frame (24), the top of the water baffle (18) is in contact with the outer side of the filter frame (24), and a drain pipe (35) is provided at the bottom of the treatment frame (1).

7. The recycled aluminum smelting flue gas treatment device according to claim 6, characterized in that: Both sides of the water-blocking arc cover (19) are fixedly installed with ear plates (30), and a sponge sheet (31) is fixedly installed at the bottom of the ear plate (30), and the side of the sponge sheet (31) away from the ear plate (30) is in contact with the inner side of the filter frame (24).

8. The device for treating flue gas from recycled aluminum smelting according to claim 7, characterized in that: The top and bottom of the activated carbon mounting frame (26) are fixedly installed with sealing arc plates (17), and the outer side of the sealing arc plates (17) is in contact with the inner side of the filter frame (24).

9. The recycled aluminum smelting flue gas treatment device according to claim 8, characterized in that: The end of the air inlet frame (4) away from the processing frame (1) is connected to the air inlet guide frame (3), and the end of the exhaust port frame (6) away from the processing frame (1) is connected to the exhaust guide frame (5).

10. The recycled aluminum smelting flue gas treatment device according to claim 9, characterized in that: The bottom of the air inlet frame (4) and the exhaust frame (6) are fixedly installed with support legs (7), and the bottom of the support legs (7) is fixedly installed with support plates (8). The back of the processing frame (1), the air inlet frame (4) and the exhaust frame (6) are sealed with sealing end caps (15).

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