Electrolytic aluminum flue gas desulfurization device

Abstract

The utility model belongs to the technical field of flue gas treatment equipment, and particularly relates to an electrolytic aluminum flue gas desulfurization device which comprises a bottom box, a mixing box is fixedly mounted at the top of the bottom box, a purification box is fixedly mounted at the top of the mixing box, an electrolytic aluminum flue gas inlet pipe is arranged on the left side of the mixing box, and a ventilation pipe is arranged on the inner wall of the left side of the mixing box. The breather pipe is communicated with the electrolytic aluminum flue gas inlet pipe; a motor is fixedly mounted on the inner wall of the bottom of the bottom box, a stirring mechanism is arranged between the motor and the mixing box, a mounting hole is formed in the top of the electrolytic aluminum flue gas inlet pipe, a dust filtering mechanism is arranged in the mounting hole, a knocking mechanism is arranged between the bottom box and the electrolytic aluminum flue gas inlet pipe, and a purifying mechanism is arranged in the purifying box. The device is reasonable in design, most dust and other impurities in flue gas can be filtered out through a filter screen by arranging the dust filtering mechanism, and then the purposes that the dust in the flue gas is prevented from abrading and blocking a pipeline and the dust is prevented from being attached to the inner wall of the box body and is not easy to clean are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas treatment equipment, and in particular to a flue gas desulfurization device for electrolytic aluminum. Background Art

[0002] The flue gas emitted during the electrolytic aluminum production process contains a large amount of pollutants, including fluoride, dust, asphalt smoke (low concentration) and SO2. The SO2 in the flue gas mainly comes from the pre-baked anodes of the electrolytic cell production raw materials. Under the high temperature environment in the electrolytic cell, the sulfur in the anode carbon block is oxidized into SO2 and enters the electrolytic flue gas. Desulfurization of electrolytic aluminum flue gas is an indispensable process in the treatment of electrolytic aluminum flue gas. Electrolytic aluminum flue gas is only allowed to be discharged after desulfurization. Electrolytic aluminum flue gas desulfurization equipment is required in this process.

[0003] At present, a Chinese patent announcement with announcement number CN219897650U discloses an electrolytic aluminum flue gas desulfurization device, comprising a main box body, an air inlet pipe is provided at one end of the main box body, a liquid injection valve is provided on the lower side of the air inlet pipe, a sub-box body is provided at the upper end of the main box body, a through hole is provided at the position corresponding to the upper end of the main box body and the sub-box body, and an air outlet pipe is provided at the upper end of the sub-box body. By setting a connecting component, when the activated carbon layer is installed, the pressure plate is pressed downward to drive the slide rod to slide in the fixed plate, and the spring is compressed at the same time, and then the activated carbon layer is installed into the sub-box body through the installation port, and the pressure plate is released after the T-plate enters the installation port, and the spring is stretched to push the upper end of the slide rod into the clamping hole of the T-plate, so as to achieve the effect of fixing the T-plate and the activated carbon layer. By setting the connecting component, the activated carbon layer can be easily disassembled and replaced, so as to avoid the long-term use of the activated carbon layer affecting the desulfurization quality.

[0004] In actual use, it is found that the flue gas in the existing device will carry a large amount of dust when entering the electrolytic aluminum flue gas inlet pipe. This dust will cause wear and blockage to the pipes inside the device, and will adhere to the inner wall of the box and is difficult to clean. There is a problem that the dust in the flue gas cannot be filtered, which in turn affects the normal operation of the device. Therefore, we proposed an electrolytic aluminum flue gas desulfurization device to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve the shortcomings of the prior art: the inability to filter dust in the flue gas, which in turn affects the normal operation of the device, and to propose an electrolytic aluminum flue gas desulfurization device.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A fume desulfurization device for electrolytic aluminum comprises a bottom box, a mixing box is fixedly mounted on the top of the bottom box, a purification box is fixedly mounted on the top of the mixing box, an electrolytic aluminum fume inlet pipe is arranged on the left side of the mixing box, a vent pipe is arranged on the left inner wall of the mixing box, and the vent pipe is communicated with the electrolytic aluminum fume inlet pipe; a motor is fixedly mounted on the bottom inner wall of the bottom box, a stirring mechanism is arranged between the motor and the mixing box, a mounting hole is provided on the top of the electrolytic aluminum fume inlet pipe, a dust filtering mechanism is arranged in the mounting hole, a knocking mechanism is arranged between the bottom box and the electrolytic aluminum fume inlet pipe, a purification mechanism is arranged in the purification box, the bottom of the purification box and the top of the mixing box are provided with the same vent hole, a desulfurizer injection pipe and a drain pipe are arranged on the right side of the mixing box, the desulfurizer injection pipe is located above the drain pipe, an exhaust pipe is arranged on the top of the purification box, and a rain shield is arranged on the top of the exhaust pipe.

[0008] Preferably, the stirring mechanism includes a stirring shaft and a stirring rod. The stirring shaft is fixedly mounted on the motor output shaft, the top end of the stirring shaft extends into the mixing box, the stirring rod is provided on the stirring shaft, and the stirring rod is located in the mixing box.

[0009] Preferably, the dust filtering mechanism includes a filter plate and a filter screen, the filter plate is inserted into the mounting hole, the filter screen is arranged on the filter plate, and a striking block is arranged on the right side of the filter plate, and the striking block is located above the filter screen.

[0010] Preferably, the knocking mechanism includes a rotating shaft and a rubber rod. The bottom inner wall of the bottom box and the top inner wall of the electrolytic aluminum fume inlet pipe are rotatably mounted with the same rotating shaft. The rotating shaft is located on the left side of the motor. A rubber rod is provided on the rotating shaft. The rubber rod is located in the electrolytic aluminum fume inlet pipe. The rubber rod is adapted to the striking block, and a transmission mechanism is provided between the rotating shaft and the stirring shaft.

[0011] Preferably, the transmission mechanism includes two transmission wheels and a transmission belt. The rotating shaft and the stirring shaft are both fixedly sleeved with transmission wheels, the transmission wheels are located in the bottom box, and the transmission sleeves on the two transmission wheels are provided with the same transmission belt.

[0012] Preferably, the purification mechanism includes a purification layer and an adsorption layer, and the purification layer and the adsorption layer are provided in the purification box, and the purification layer is located below the adsorption layer.

[0013] Preferably, a dust collecting box is provided at the bottom of the electrolytic aluminum fume inlet pipe, and the dust collecting box is located on the left side of the filter plate.

[0014] Preferably, a door is provided on the front side of the purification box, and a handle is provided on the door.

[0015] Beneficial effects of this application:

[0016] 1. Through the cooperation of the electrolytic aluminum fume inlet pipe, filter plate and filter screen, most of the dust and other impurities in the fume can be filtered out through the filter screen, thereby preventing the dust in the fume from causing wear and blockage on the pipes and preventing the dust from adhering to the inner wall of the box and being difficult to clean;

[0017] 2. Through the cooperation of the rotating shaft, the rubber rod and the striking block, the rotating shaft can drive the rubber rod to rotate, and the rubber rod can continuously strike the striking block, which can make the filter plate vibrate, and the dust on the filter net can be shaken off into the dust collecting box, so as to avoid the filter net from being blocked. The dust collecting box can be disassembled, and the dust can be centrally processed;

[0018] 3. Through the cooperation of the motor, stirring shaft and stirring rod, the motor can drive the stirring rod to rotate, and the flue gas can be fully mixed with the desulfurizer under the stirring action of the stirring rod, so as to achieve the purpose of preliminary desulfurization reaction;

[0019] 4. Through the cooperation of the purification layer and the adsorption layer, the purification layer can further react with the residual sulfide in the flue gas and convert it into a stable compound, thereby deeply removing the sulfur component in the flue gas; the adsorption layer can adsorb tiny particles in the flue gas and other harmful substances that may remain, which can ensure that the discharged flue gas is cleaner and more environmentally friendly; after the double treatment of the purification box, the desulfurization effect of the flue gas can be greatly improved, and the emission is more in line with environmental protection standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an electrolytic aluminum flue gas desulfurization device proposed in this application;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of an electrolytic aluminum flue gas desulfurization device proposed in this application;

[0022] Figure 3 This is a schematic structural diagram of part A of an electrolytic aluminum flue gas desulfurization device proposed in this application;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the transmission mechanism of the electrolytic aluminum flue gas desulfurization device proposed in this application.

[0024] In the figure: 1. Bottom box; 2. Mixing box; 3. Purification box; 4. Electrolytic aluminum fume inlet pipe; 5. Motor; 6. Stirring shaft; 7. Stirring rod; 8. Rotating shaft; 9. Rubber rod; 10. Mounting hole; 11. Filter plate; 12. Filter screen; 13. Beating block; 14. Dust collecting box; 15. Ventilation pipe; 16. Purification layer; 17. Adsorption layer; 18. Exhaust pipe; 19. Ventilation hole; 20. Desulfurizer injection pipe; 21. Drain pipe; 22. Drive wheel; 23. Drive belt. DETAILED DESCRIPTION

[0025] The technical solutions of this application will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this application without creative effort are also within the scope of protection of this application.

[0026] Reference Figure 1-4 , a fume desulfurization device for electrolytic aluminum comprises a bottom box 1, a mixing box 2 is fixedly installed on the top of the bottom box 1, a purification box 3 is fixedly installed on the top of the mixing box 2, an electrolytic aluminum fume inlet pipe 4 is arranged on the left side of the mixing box 2, a ventilation pipe 15 is arranged on the left inner wall of the mixing box 2, and the ventilation pipe 15 is connected to the electrolytic aluminum fume inlet pipe 4; a motor 5 is fixedly installed on the bottom inner wall of the bottom box 1, a stirring mechanism is arranged between the motor 5 and the mixing box 2, a mounting hole 10 is provided on the top of the electrolytic aluminum fume inlet pipe 4, a dust filtering mechanism is arranged in the mounting hole 10, a knocking mechanism is provided between the bottom box 1 and the electrolytic aluminum fume inlet pipe 4, a purification mechanism is provided in the purification box 3, the bottom of the purification box 3 and the top of the mixing box 2 are provided with the same ventilation hole 19, a desulfurizer injection pipe 20 and a drain pipe 21 are arranged on the right side of the mixing box 2, the desulfurizer injection pipe 20 is located above the drain pipe 21, an exhaust pipe 18 is arranged on the top of the purification box 3, and a rain shield is provided on the top of the exhaust pipe 18.

[0027] In this embodiment, the stirring mechanism includes a stirring shaft 6 and a stirring rod 7. The stirring shaft 6 is fixedly mounted on the output shaft of the motor 5. The top end of the stirring shaft 6 extends into the mixing box 2. The stirring rod 7 is provided on the stirring shaft 6. The stirring rod 7 is located in the mixing box 2. By providing a stirring mechanism, the motor 5 can drive the stirring rod 7 to rotate, so that the flue gas can be fully mixed with the desulfurizer under the stirring action of the stirring rod 7, thereby achieving the purpose of carrying out a preliminary desulfurization reaction.

[0028] In this embodiment, the dust filtering mechanism includes a filter plate 11 and a filter screen 12. The filter plate 11 is inserted into the mounting hole 10, and the filter screen 12 is arranged on the filter plate 11. A striking block 13 is arranged on the right side of the filter plate 11, and the striking block 13 is located above the filter screen 12. By providing the dust filtering mechanism, the filter screen 12 can filter out most of the dust and other impurities in the flue gas, thereby preventing the dust in the flue gas from causing wear and blockage to the pipe, and at the same time preventing the dust from adhering to the inner wall of the box and being difficult to clean.

[0029] In this embodiment, the knocking mechanism includes a rotating shaft 8 and a rubber rod 9. The bottom inner wall of the bottom box 1 and the top inner wall of the electrolytic aluminum fume inlet pipe 4 are rotatably installed with the same rotating shaft 8. The rotating shaft 8 is located on the left side of the motor 5. A rubber rod 9 is provided on the rotating shaft 8. The rubber rod 9 is located in the electrolytic aluminum fume inlet pipe 4. The rubber rod 9 is adapted to the striking block 13. A transmission mechanism is provided between the rotating shaft 8 and the stirring shaft 6. By providing the knocking mechanism, the rotating shaft 8 can drive the rubber rod 9 to rotate, and the striking block 13 can be continuously struck by the rubber rod 9, which can make the filter plate 11 vibrate, and the dust on the filter screen 12 can be shaken off into the dust collecting box 14, thereby preventing the filter screen 12 from being blocked.

[0030] In this embodiment, the transmission mechanism includes two transmission wheels 22 and a transmission belt 23. The transmission wheels 22 are fixedly sleeved on the rotating shaft 8 and the stirring shaft 6. The transmission wheels 22 are located in the bottom box 1. The transmission sleeves on the two transmission wheels 22 are provided with the same transmission belt 23. By providing a transmission mechanism, the stirring shaft 6 can drive the rotating shaft 8 to rotate.

[0031] In this embodiment, the purification mechanism includes a purification layer 16 and an adsorption layer 17. The purification layer 16 and the adsorption layer 17 are arranged in the purification box 3. The purification layer 16 is located below the adsorption layer 17. By providing the purification mechanism, the purification layer 16 can further react with the residual sulfide in the flue gas and convert it into a stable compound, thereby deeply removing the sulfur component in the flue gas; the adsorption layer 17 can adsorb tiny particles in the flue gas and other harmful substances that may remain, which can achieve the purpose of ensuring that the discharged flue gas is cleaner and more environmentally friendly.

[0032] In this embodiment, a dust box 14 is provided at the bottom of the electrolytic aluminum fume inlet pipe 4, and the dust box 14 is located on the left side of the filter plate 11. By providing the dust box 14, the dust shaken off the filter 12 can be collected by the dust box 14. The dust box 14 can be disassembled, which can achieve the purpose of centralized dust treatment.

[0033] In this embodiment, a door is provided on the front side of the purification box 3, and a handle is provided on the door. By providing the door, the door can be opened by the handle, which can facilitate the maintenance and replacement of the purification mechanism in the purification box 3.

[0034] In the present application, when working, firstly, the desulfurizer solution is injected into the mixing box 2 through the desulfurizer injection pipe 20, and the electrolytic aluminum flue gas enters the device through the electrolytic aluminum flue gas inlet pipe 4, and first passes through the vent pipe 15 on the left inner wall of the electrolytic aluminum flue gas inlet pipe 4. The vent pipe 15 is connected to the electrolytic aluminum flue gas inlet pipe 4, which plays a role in guiding the flow of flue gas; when the flue gas passes through the dust filtering mechanism, the filter screen 12 on the filter plate 11 will filter out most of the dust and other impurities in the flue gas, thereby preventing the dust in the flue gas from causing wear and blockage on the pipe and The purpose of the plug is to prevent the dust from adhering to the inner wall of the box and being difficult to clean; then the motor 5 is started, and the stirring shaft 6 fixedly installed on the output shaft of the motor 5 rotates, driving the stirring rod 7 on the stirring shaft 6 to stir in the mixing box 2. Under the stirring action of the stirring rod 7, the flue gas can be fully mixed with the desulfurizer, and the purpose of the preliminary desulfurization reaction can be achieved; at the same time, the stirring shaft 6 drives the rotating shaft 8 to rotate through the two transmission wheels 22 and the transmission belt 23, and the rubber rod 9 on the rotating shaft 8 rotates accordingly. When the rubber rod 9 can continuously hit the striking block 13, the rubber rod 9 can continuously hit the striking block 13. Hitting can make the filter plate 11 vibrate, so that the dust on the filter screen 12 can be shaken off into the dust collecting box 14, which can achieve the purpose of avoiding clogging of the filter screen 12. The dust collecting box 14 can be disassembled, so as to achieve the purpose of centralized dust treatment. The flue gas after preliminary treatment enters the purification box 3 through the vent 19, wherein the purification layer 16 can further react with the residual sulfide in the flue gas and convert it into a stable compound, thereby deeply removing the sulfur component in the flue gas; the adsorption layer 17 can adsorb tiny particles in the flue gas and other harmful substances that may remain, so as to ensure that the discharged flue gas is cleaner and more environmentally friendly; after the double treatment of the purification box 3, the desulfurization effect of the flue gas can be greatly improved, and the emission is more in line with environmental protection standards; the purified flue gas is discharged from the exhaust pipe 18, and the rain shield on the top of the exhaust pipe 18 can prevent rainwater from entering the exhaust pipe; a box door is provided on the front side of the purification box 3, which can be opened by a handle, so as to facilitate the maintenance and replacement of the purification mechanism in the purification box 3.

Claims

1. An electrolytic aluminum flue gas desulfurization device, characterized in that: The invention comprises a bottom box (1), a mixing box (2) is fixedly installed on the top of the bottom box (1), a purification box (3) is fixedly installed on the top of the mixing box (2), an electrolytic aluminum fume inlet pipe (4) is provided on the left side of the mixing box (2), a ventilation pipe (15) is provided on the inner wall of the left side of the mixing box (2), and the ventilation pipe (15) is connected to the electrolytic aluminum fume inlet pipe (4); A motor (5) is fixedly mounted on the inner wall of the bottom of the bottom box (1), a stirring mechanism is provided between the motor (5) and the mixing box (2), a mounting hole (10) is provided on the top of the electrolytic aluminum fume inlet pipe (4), a dust filter mechanism is provided in the mounting hole (10), a knocking mechanism is provided between the bottom box (1) and the electrolytic aluminum fume inlet pipe (4), a purification mechanism is provided in the purification box (3), the bottom of the purification box (3) and the top of the mixing box (2) are provided with the same vent hole (19), a desulfurizer injection pipe (20) and a drain pipe (21) are provided on the right side of the mixing box (2), the desulfurizer injection pipe (20) is located above the drain pipe (21), an exhaust pipe (18) is provided on the top of the purification box (3), and a rain shield is provided on the top of the exhaust pipe (18).

2. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The stirring mechanism comprises a stirring shaft (6) and a stirring rod (7); the stirring shaft (6) is fixedly mounted on the output shaft of the motor (5); the top end of the stirring shaft (6) extends into the mixing box (2); the stirring rod (7) is provided on the stirring shaft (6); and the stirring rod (7) is located in the mixing box (2).

3. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The dust filtering mechanism comprises a filter plate (11) and a filter screen (12); the filter plate (11) is inserted into the mounting hole (10); the filter screen (12) is arranged on the filter plate (11); a striking block (13) is arranged on the right side of the filter plate (11); and the striking block (13) is located above the filter screen (12).

4. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The knocking mechanism comprises a rotating shaft (8) and a rubber rod (9); the bottom inner wall of the bottom box (1) and the top inner wall of the electrolytic aluminum fume inlet pipe (4) are rotatably mounted with the same rotating shaft (8); the rotating shaft (8) is located on the left side of the motor (5); a rubber rod (9) is provided on the rotating shaft (8); the rubber rod (9) is located in the electrolytic aluminum fume inlet pipe (4); the rubber rod (9) is adapted to the striking block (13); and a transmission mechanism is provided between the rotating shaft (8) and the stirring shaft (6).

5. The electrolytic aluminum flue gas desulfurization device according to claim 4, characterized in that: The transmission mechanism comprises two transmission wheels (22) and a transmission belt (23); the transmission wheels (22) are fixedly sleeved on the rotating shaft (8) and the stirring shaft (6); the transmission wheels (22) are located in the bottom box (1); and the same transmission belt (23) is sleeved on the two transmission wheels (22).

6. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The purification mechanism comprises a purification layer (16) and an adsorption layer (17); the purification layer (16) and the adsorption layer (17) are arranged in the purification box (3); the purification layer (16) is located below the adsorption layer (17).

7. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: A dust collecting box (14) is provided at the bottom of the electrolytic aluminum fume inlet pipe (4), and the dust collecting box (14) is located on the left side of the filter plate (11).

8. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The front side of the purification box (3) is provided with a box door, and the box door is provided with a handle.

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