Regenerated copper smelting waste gas filtering and purifying device

Abstract

This utility model relates to the field of recycled copper smelting waste gas treatment technology, and discloses a recycled copper smelting waste gas filtration and purification device, including a treatment chamber. This utility model introduces recycled copper smelting waste gas into the treatment chamber, which then activates an air pump connected to a gas delivery pipe. The air pump pumps air into the delivery pipe, where the high-speed gas contacts the bottom of a funnel and carries away the activated carbon powder inside the funnel into the treatment chamber. Since recycled copper smelting waste gas is a high-temperature gas, the high-temperature gas will rise autonomously. At this time, the two airflows will form a vortex due to the shearing effect of natural convection. The activated carbon powder within the vortex is then moved and adsorbs the VOCs harmful substances in the recycled copper smelting waste gas, achieving the beneficial effect of actively contacting the activated carbon powder with the waste gas for efficient filtration during the deep treatment of recycled copper waste gas.

Description

Technical Field

[0001] This utility model relates to the field of recycled copper waste gas treatment technology, specifically a recycled copper smelting waste gas filtration and purification device. Background Technology

[0002] Recycled copper smelting is the process of reprocessing waste copper, such as copper slag, copper alloy scrap, and scrap copper products, into copper and copper alloys through smelting technology. Waste copper smelting exhaust gas contains pollutants such as SO2 and NOx, which are efficiently purified using wet, dry, desulfurization, and denitrification processes to ensure that emissions meet standards.

[0003] To address the characteristics and hazards of waste gas from copper smelting plants, the following treatment processes are typically employed: A gas collection hood is installed at the exhaust port of the smelting equipment, and the waste gas is collected into a pipeline using negative pressure suction. The collected waste gas undergoes pretreatment such as cooling and dust removal. Wet scrubbers and other equipment are used to remove solid particles from the waste gas, and the flue gas is cooled to room temperature. Desulfurization and denitrification are then performed: desulfurization processes include the limestone-gypsum method, ammonium sulfate method, and sodium bisulfite method, which convert sulfur dioxide in the waste gas into harmless substances through chemical reactions. Heavy metal ions in the waste copper smelting waste gas are removed using adsorption and chemical precipitation methods. Even after these treatments, the waste gas may still contain some difficult-to-remove pollutants, thus requiring further treatment and purification. Commonly used methods include activated carbon adsorption and catalytic combustion. Activated carbon adsorption removes VOCs and other harmful substances from the waste gas; while catalytic combustion converts combustible substances in the waste gas into harmless substances. Finally, a waste heat recovery system is used to preheat fresh air or generate electricity.

[0004] Currently, deep treatment of smelting exhaust gas typically involves using wind power to propel the exhaust gas into the treatment equipment, where it passively contacts activated carbon plates. The activated carbon then adsorbs VOCs (volatile organic compounds). For example, the specification 0022 of application number CN220238173U discloses that "exhaust gas sequentially passes through a filter screen and activated carbon plates, treating incompletely dissolved particles and odors, and finally exits the filter box through an outlet pipe. When cleaning the filter screen and activated carbon plates is required, moving the moving block moves the locking block, causing it to disengage from the locking slot, allowing the filter screen and activated carbon plates to be easily removed for convenient replacement or cleaning." Alternatively, CN207371309U also describes... The description in paragraph 0022 of the book, which states that "the purified gas enters the processing chamber, is disinfected by an ozone generator, and the generated water is discharged through a water outlet, while the remaining gas undergoes final adsorption treatment through an activated carbon adsorption layer," although using a gas-accelerated passive contact activated carbon plate can also adsorb waste gas, the direction of the gas from entering the activated carbon plate to exiting the filter is constant. This makes the side of the activated carbon plate facing the gas most prone to clogging, thus requiring regular replacement of the activated carbon plate. At the same time, the filtration efficiency of the activated carbon plate depends on its area; the larger the area, the more waste gas it contacts and the more waste gas it filters. However, most existing technologies use small-area activated carbon plates to cover pipes or passageways, resulting in low efficiency. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a filtration and purification device for recycled copper smelting waste gas, which has the advantages of actively contacting activated carbon powder with the waste gas for efficient filtration during the deep treatment of recycled copper waste gas, thus solving the problems mentioned above.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a recycled copper smelting waste gas filtration and purification device, comprising a treatment chamber, an input pipe for inputting recycled copper smelting waste gas requiring deep treatment into the bottom of the side wall of the treatment chamber, a gas supply pipe for inputting activated carbon powder at the top of the treatment chamber, an activated carbon powder funnel inserted into the middle of the gas supply pipe, an air pump at the tail end of the input pipe, an output pipe for outputting purified recycled copper smelting waste gas at the bottom of the treatment chamber, an air pump also connected to the tail end of the output pipe, and a hybrid structure for actively contacting and filtering the activated carbon powder and the recycled copper smelting waste gas inside the treatment chamber.

[0007] Preferably, the bottom of the processing chamber is a downward-contracting cone shape, and the center of the bottom of the processing chamber is sealed to the output pipe.

[0008] Preferably, the hybrid structure includes a throat tube installed at the connection between the output pipe and the processing chamber. The throat tube is slidably connected to an inner tube at one end inside the processing chamber. There is a gap between the inner tube and the throat tube. A slider is installed at the bottom of the outer wall of the inner tube inside the throat tube. The slider is used to slide against the inner wall of the throat tube when the inner tube moves upward. A locking block is fixedly installed at the top opening of the throat tube. The locking block is used to contact the slider and limit its position. A trumpet-shaped expansion plate is installed at the top of the inner tube. The expansion plate covers the gap between the inner tube and the throat tube when the slider does not contact the locking block.

[0009] Preferably, a one-way flap is also installed on the inner side of the inner tube, which only allows airflow to be drawn into it. The one-way flap can only be flipped downwards to expose the internal space of the inner tube for airflow to enter.

[0010] Preferably, the processing chamber is a hollow cylinder.

[0011] Preferably, the hybrid structure includes a branch pipe sealed to the end of the gas supply pipe, the branch pipe surrounding the top of the inner side of the processing chamber, the branch pipe body fitting against the inner side wall of the processing chamber and extending downward to its middle, and an airflow baffle installed below the branch pipe at the bottom of the inner side of the processing chamber, the airflow baffle extending downward to the edge of the expansion plate.

[0012] Preferably, the hybrid structure further includes a guide plate that surrounds the conical inner wall at the bottom of the processing chamber. The guide plate is spirally surrounding the inner wall at the bottom of the processing chamber, and the diameter of the spiral increases as it approaches the top of the processing chamber. The center of the guide plate is sleeved on the side of the throat pipe to guide the airflow blown out of the throat pipe to spiral upward around the inner wall of the processing chamber.

[0013] Compared with the prior art, this utility model provides a filtration and purification device for waste gas from recycled copper smelting, which has the following beneficial effects: This invention introduces recycled copper smelting waste gas into the treatment chamber. Upon activation, an air pump connected to the gas delivery pipe is started, pumping air into the pipe. The high-speed gas in the pipe contacts the bottom of a funnel, carrying away activated carbon powder into the treatment chamber. The recycled copper smelting waste gas is a high-temperature gas; the high-temperature gas rises spontaneously and comes into contact with the lower-temperature gas containing activated carbon powder. The two airflows form a vortex due to the shearing effect of natural convection. The activated carbon powder within the vortex is then moved and adsorbs VOCs harmful substances in the recycled copper smelting waste gas. This achieves the beneficial effect of actively contacting the activated carbon powder with the waste gas for efficient filtration during the deep treatment of recycled copper waste gas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model; Figure 2 This is a front sectional view of the overall structure of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 4 This is a front sectional view of the overall structure of Embodiment 2 of this utility model; Figure 5 This is a schematic diagram of the vortex wind direction in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the vortex wind direction in Embodiment 2 of this utility model; Figure 7 This is a schematic diagram of the throat structure of this utility model.

[0015] The components are: 1. Processing chamber; 101. Input pipe; 102. Gas supply pipe; 103. Output pipe; 104. Throat pipe; 105. Inner pipe; 106. Slider; 107. Locking block; 108. Expanding plate; 109. One-way diaphragm flap; 2. Branch pipe; 3. Airflow baffle; 4. Guide plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-7 The recycled copper smelting waste gas filtration and purification device includes a treatment chamber 1. The bottom of the side wall of the treatment chamber 1 is connected to an input pipe 101 for inputting the recycled copper smelting waste gas that needs to be deeply treated into its interior. The top of the treatment chamber 1 is connected to a gas supply pipe 102 for inputting activated carbon powder. The middle end of the gas supply pipe 102 is connected to an activated carbon powder funnel inserted into its own pipe. The tail end of the input pipe is connected to an air pump. The bottom of the treatment chamber 1 has an output pipe 103 for outputting the purified recycled copper smelting waste gas. The tail end of the output pipe 103 is also connected to an air pump. The treatment chamber 1 is also equipped with a hybrid structure that actively contacts and filters the activated carbon powder with the recycled copper smelting waste gas.

[0018] Furthermore, the diameter of activated carbon powder is 0.5-3 mm, corresponding to the diameter of columnar carbon of 1-4 mm.

[0019] The essence of activated carbon adsorption of waste gas is the diffusion of pollutant molecules from the gas phase into the internal pores of carbon particles, including micropores, mesopores, and macropores, and the occurrence of surface reactions. Regenerated copper waste gas contains particulate matter, such as metal oxide dust. If the activated carbon particles are too fine (<0.5mm), the pores are easily blocked by dust, reducing the adsorption capacity. A diameter of 0.5-3mm can reduce dust embedding and extend the adsorption cycle.

[0020] The bottom of the processing chamber 1 is a tapered shape that tapers downwards, and the center of the bottom of the processing chamber 1 is sealed to the output pipe 103.

[0021] The tapered shape that gradually narrows from wide to narrow at the bottom of the inner side of the processing chamber 1 creates an area that increases the static pressure of the airflow when the output pipe 103 inputs gas into the bottom of the inner side of the processing chamber 1. This causes the airflow to rise along the tapered surface and come into contact with the recycled copper smelting waste gas in the middle of the inner side of the processing chamber 1.

[0022] Furthermore, the output pipe 103 is also connected to a three-way pipe. One end of the three-way pipe connects to the output pipe 103, one end connects to the air pump, and the other end connects to the bag filter. When the air pump inputs gas, the valve at the end of the three-way pipe connected to the bag filter is closed, allowing gas to enter the output pipe 103. Then, the air pump connected to the three-way pipe is closed, and the gas is output from the output pipe 103 to the bag filter for separating and adsorbing activated carbon powder that has absorbed the waste gas from the recycled copper smelting. The three-way pipe is an electric three-way ball valve, specifically model FNQ945F. This equipment is among the most readily available on the market capable of directly... The equipment purchased is connected to the output pipe 103 using the existing flange connection method, without any improvement, so it will not be described in detail. Similarly, the valve control of the three-way pipe is also manually controlled. Furthermore, the bag filter of this application is also an existing device, model MCJC15-1500. Since the activated carbon powder used in this application starts at 0.5mm, this model of bag filter is sufficient. Moreover, this model of bag filter can be purchased directly on the market, so it is not shown in the accompanying drawings.

[0023] Furthermore, after the activated carbon powder enters the bag filter, the activated carbon powder layer intercepted on the filter screen continues to participate in the filtration of the recycled copper smelting waste gas, thus utilizing the waste. Moreover, the recycled copper smelting waste gas in this application is already desulfurized and deacidified, and contains SO2 and NO... x Since the waste gas has been removed, the activated carbon powder no longer needs to be consumed on these high-load substances. Therefore, it is sufficient to add about 1-2 grams of activated carbon powder per cubic meter of waste gas. Furthermore, the air pump in this application is an RB-810-H17 vacuum pump that supports suction. This application does not improve the connection between the air pump and the pipeline, but only adopts the existing flange connection technology. At the same time, the air pump in this application is also controlled manually by a button, rather than connected to a PLC for system automatic control. Therefore, it does not describe how to connect to a PLC for coding.

[0024] For further details, please refer to the instruction manual appendix. Figures 1-2The processing chamber 1 is a hollow cylinder. The hybrid structure includes a branch pipe 2 that is sealed and connected to the end of the gas supply pipe 102. The branch pipe 2 surrounds the top of the inner side of the processing chamber 1, and the body of the branch pipe 2 is attached to the inner side wall of the processing chamber 1 and extends downward to its middle. The airflow baffle 3 is installed below the branch pipe 2 and is positioned at the bottom of the inner side of the processing chamber 1. The airflow baffle 3 extends downward to the edge of the expansion plate 108.

[0025] Branch pipe 2 extends downwards and aligns above airflow baffle 3. At this time, the air containing activated carbon powder is delivered downwards by branch pipe 2. As the air is compressed by branch pipe 2 to form low-temperature cold air, and the cold air containing activated carbon powder ejected from branch pipe 2 carries the kinetic energy of the air pump, the airflow directly impacts the top of airflow baffle 3. The airflow blocked by airflow baffle 3 disperses and comes into contact with the airflow channels formed by the intervals of multiple airflow baffles 3. At this time, high-temperature recycled copper smelting waste gas is introduced. Since the recycled copper smelting waste gas is a high-temperature gas and it enters from a low position, the high-temperature gas will rise on its own and come into contact with the low-temperature gas containing activated carbon powder. At this time, the two airflows will form a vortex due to the shearing effect of natural convection. Then, the activated carbon powder in the vortex begins to adsorb the VOCs harmful substances in the recycled copper smelting waste gas.

[0026] For further details, please refer to the instruction manual appendix. Figure 4 The hybrid structure also includes a guide plate 4 that surrounds the conical inner wall at the bottom of the processing chamber 1. The guide plate 4 is spirally surrounded by the inner wall at the bottom of the processing chamber 1, and the diameter of the spiral increases as it gets closer to the top of the processing chamber 1. The center of the guide plate 4 is sleeved on the side of the throat 104 to guide the airflow blown out by the throat 104 to spiral upward around the inner wall of the processing chamber 1.

[0027] Example 1 Please refer to the instruction manual appendix. Figures 1-2The input pipe 101 of this device is directly connected to the treated copper smelting waste gas, which still has a temperature above 200 degrees Celsius, and enters the treatment chamber 1. Once the regenerated copper smelting waste gas enters the treatment chamber 1, the air pump connected to the gas delivery pipe 102 is activated. The air pump pumps air into the gas delivery pipe 102. At this time, the high-speed gas in the gas delivery pipe 102 contacts the bottom of the funnel and carries away the activated carbon powder in the funnel. It is worth noting that the funnel is not an open type, but a sealed funnel with a lid. In this way, under the blowing of the high-speed airflow, the activated carbon powder in the funnel will not be blown out in reverse, but will be sucked into the gas delivery pipe 102 and then into the treatment chamber 1. Further, the gas containing activated carbon that enters the treatment chamber 1 will enter the branch pipe 2, and the branch pipe 2 will... The branch pipe 2 extends downwards and aligns above the airflow baffle 3. At this point, the air containing activated carbon powder delivered downwards by the branch pipe 2 is compressed into low-temperature cold air. Furthermore, the cold air containing activated carbon powder ejected from the branch pipe 2 carries the kinetic energy of the air pump. The airflow directly impacts the top of the airflow baffle 3. The airflow blocked by the baffle 3 disperses and comes into contact with the airflow channels formed by the intervals between the multiple baffles 3. Since the previously introduced high-temperature recycled copper smelting waste gas is a high-temperature gas and enters from a low position, the high-temperature gas will rise autonomously and come into contact with the low-temperature gas containing activated carbon powder. At this point, the two airflows will form a vortex due to the shearing effect of natural convection. (Refer to the appendix to this application specification.) Figure 5 Then, the activated carbon powder in the vortex is moved and adsorbed onto the VOCs harmful substances in the waste gas from the recycled copper smelting. At this time, the air pump located in the output pipe 103 can also be started. After the air pump is started, it pumps the gas into the output pipe 103. Then, the gas enters the throat 104 in reverse from the output pipe 103. Since the inner tube 105 inside the throat 104 is blocked by the one-way flap 109, the one-way flap 109 only allows the airflow to enter but does not allow the airflow to rush out. Therefore, the high-speed airflow will blow up the entire inner tube 105. The inner tube 105, equipped with a slider 106, maintains a vertically upward posture when blown up by the airflow. The slider 106 then contacts the locking block 107, forming a locking mechanism. At this point, the bottom and outer sides of the inner tube 105 are exposed outside the throat 104. The airflow then continues upward through the gap between the two, contacting the expansion plate 108. The expansion plate 108 is a cone-shaped airflow that is guided to disperse in all directions, thus contacting the airflow channels formed by multiple airflow baffles 3. The wind force then impacts the outer side of the vortex upward under the influence of the airflow channels. Please refer to the instruction manual appendix. Figure 2Therefore, the vortex already formed by the mixing of hot and cold air is further accelerated by the upward airflow, forming a ring-shaped vortex. By using the airflow to accelerate the movement of activated carbon powder within the treatment chamber 1, the activated carbon powder begins to actively capture VOCs harmful substances in the copper smelting waste gas during its rapid movement. Note that starting the air pump located at the output pipe 103 is for acceleration purposes and is not a necessary technique; this embodiment can operate even without it being turned on. Then, the air pump connected to the output pipe 103 is turned off, and the valve on the side of the three-way pipe connected to the air pump is closed, while the valve on the other side connected to the bag filter is opened. Then, the bag filter is started to remove the activated carbon powder and air adsorbed from the waste gas inside the treatment chamber 1. The air is then drawn into the bag filter. At this time, the air is drawn back from the inside of the treatment chamber 1 into the throat 104. Correspondingly, the expansion plate 108 at the top of the inner tube 105 is directly drawn back and adsorbed to the top of the throat 104. Then, the one-way membrane flap 109 bends downward to allow the activated carbon powder air inside the treatment chamber 1 to enter the output pipe 103 and then into the bag filter. Since the activated carbon powder particle diameter is greater than 0.5mm in this embodiment, it can be perfectly intercepted by the bag filter. The VOCs harmful substances in the original recycled copper smelting waste gas are also intercepted by the activated carbon powder. Therefore, the air after being filtered by the bag filter to remove the activated carbon powder has completed deep filtration and is directly discharged.

[0028] In operation, the waste gas from the recycled copper smelting process is introduced into the treatment chamber 1. The air pump connected to the gas delivery pipe 102 is then activated, pumping air into the pipe. At this point, the high-speed gas in the pipe contacts the bottom of the funnel and carries the activated carbon powder into the treatment chamber 1. The activated carbon-containing gas entering the treatment chamber 1 then enters the branch pipe 2. The air containing activated carbon powder delivered downwards through the branch pipe 2 directly impacts the top of the airflow baffle 3. The airflow blocked by the baffle 3 disperses, thus contacting multiple gas streams. The airflow channel formed by the baffle plate 3 is a high-temperature gas in the recycled copper smelting waste gas. The high-temperature gas will rise on its own and come into contact with the low-temperature gas containing activated carbon powder. At this time, the two airflows will form a vortex due to the shearing effect of natural convection. Then, the activated carbon powder in the vortex is driven to move and adsorb the VOCs harmful substances in the recycled copper smelting waste gas. After filtration, the valve on the other side connected to the bag filter is opened, and then the bag filter is started to draw the activated carbon powder and air adsorbed in the waste gas in the treatment chamber 1 into the bag filter.

[0029] Example 2 In Example 1, the airflow blocked by the airflow baffle 3 disperses and comes into contact with the airflow channels formed by the intervals between the multiple airflow baffles 3. Since high-temperature recycled copper smelting waste gas was previously introduced, and because this waste gas is high-temperature gas and enters from a low position, the high-temperature gas will rise autonomously and come into contact with the low-temperature gas containing activated carbon powder. At this time, the two airflows will form a vortex due to the shearing effect of natural convection. However, the vortex is located in the upper middle part of the treatment chamber 1, resulting in low area utilization. To solve the above defects, this example proposes the following technical solution: In this embodiment, the input pipe 101 is directly connected to the treated copper smelting waste gas, which still has a temperature above 200 degrees Celsius, and it enters the treatment chamber 1. Once the recycled copper smelting waste gas enters the treatment chamber 1, the air pump connected to the gas delivery pipe 102 is activated. The air pump pumps air into the gas delivery pipe 102. At this time, the high-speed gas in the gas delivery pipe 102 contacts the bottom of the funnel and carries away the activated carbon powder in the funnel. Then it enters the treatment chamber 1. At this time, the gas is no longer guided by the branch pipe 2, but directly passes through the top of the conical treatment chamber 1 to expand the area and then falls evenly downwards. Correspondingly, the previously introduced high-temperature recycled copper smelting waste gas, because the recycled copper smelting waste gas is a high-temperature gas and it enters from a low position, will rise on its own and come into contact with the low-temperature gas containing activated carbon powder. At this time, the two airflows will form a vortex due to the shearing effect of natural convection. Refer to the appendix of this application specification. Figure 6At this time, the air pump located in the output pipe 103 is started. After the air pump starts, it pumps gas into the output pipe 103. Then, the gas enters the throat pipe 104 in reverse from the output pipe 103. Since the inner tube 105 inside the throat pipe 104 is blocked by the one-way flap 109, the one-way flap 109 only allows airflow to enter but not to rush out. Therefore, the high-speed airflow will blow up the entire inner tube 105. The inner tube 105 is equipped with a slider 106, which keeps it in a vertically upward posture when it is blown up by the airflow. Then, the slider 106 contacts the locking block 107 to form a locking. At this time, the bottom and outside of the inner tube 105 are exposed outside the throat pipe 104. Then, the airflow continues to rise through the gap between the two and contacts the guide plate 4. The guide plate 4 is spirally wrapped around the bottom inner wall of the processing chamber 1, and the diameter of the spiral increases as it gets closer to the top of the processing chamber 1. Therefore, the high-speed airflow, guided by the guide plate 4, spirals upward and contacts the high-temperature recycled copper smelting waste gas located above. The two then mix to form spiraling upward hot air, which then contacts the cold air containing activated carbon powder above, forming a vertical vortex. In this embodiment, there are no obstructions inside the treatment chamber 1. The vertical tornado-shaped vortex will accelerate the movement of activated carbon powder within the treatment chamber 1. During rapid movement, the activated carbon powder begins to actively capture VOCs harmful substances in the copper smelting waste gas. Note that the air pump located at the output pipe 103 is used for initial airflow formation acceleration. After the vortex is formed, the air pump located at the output pipe 103 is turned off. Then, the recycled copper smelting waste gas is actively filtered by the activated carbon powder in the vortex and discharged as in Embodiment 1. This embodiment will not be described further.

[0030] In operation, the waste gas from copper smelting is introduced into the treatment chamber 1. The air pump connected to the gas delivery pipe 102 is then activated, pumping air into the pipe. At this point, the high-speed gas in the pipe contacts the bottom of the funnel and carries away the activated carbon powder, entering the treatment chamber 1. The gas is no longer guided by the branch pipe 2, but instead flows directly to the top of the conical treatment chamber 1, expanding its surface area before descending evenly. Correspondingly, the previously introduced high-temperature recycled copper smelting waste gas, being a high-temperature gas and entering from a low position, will rise autonomously and come into contact with the lower-temperature gas containing activated carbon powder. At this point, the two airflows will form a vortex due to the shearing effect of natural convection. (Refer to the appendix of this application specification.) Figure 6At this time, the air pump located in the output pipe 103 is started, and the airflow is input from the output pipe 103 to the bottom of the inner side of the treatment chamber 1. The high-speed airflow is guided by the guide plate 4 and rises in a spiral posture to contact the high-temperature recycled copper smelting waste gas above. The two are then mixed to form spiral upward hot air, which comes into contact with the cold air containing activated carbon powder above, forming a vertical vortex. The activated carbon powder in the vortex is then moved and adsorbed into the VOCs harmful substances in the recycled copper smelting waste gas. After filtration is completed, the valve connected to the bag filter on the other side is opened, and then the bag filter is started to draw the activated carbon powder and air adsorbed in the waste gas inside the treatment chamber 1 into the bag filter.

[0031] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration and purification device for recycled copper smelting waste gas, comprising a treatment chamber (1), wherein the bottom of the side wall of the treatment chamber (1) is connected to an input pipe (101) for inputting recycled copper smelting waste gas requiring deep treatment into the chamber, characterized in that: The top of the treatment chamber (1) is connected to a gas supply pipe (102) for inputting activated carbon powder. The middle end of the gas supply pipe (102) is connected to an activated carbon powder funnel inserted into its own pipe. The tail end of the input pipe (101) is connected to an air pump. The bottom of the treatment chamber (1) has an output pipe (103) for outputting purified recycled copper smelting waste gas. The tail end of the output pipe (103) is connected to another air pump. The treatment chamber (1) is also equipped with a hybrid structure that actively contacts and filters the activated carbon powder with the recycled copper smelting waste gas. Includes a throat tube (104), which is installed at the connection between the output pipe (103) and the processing chamber (1); The throat tube (104) is located inside the processing chamber (1) and is slidably connected to the inner tube (105) at one end. There is a gap between the inner tube (105) and the throat tube (104).

2. The waste gas filtration and purification device for recycled copper smelting according to claim 1, characterized in that: The bottom of the processing chamber (1) is a tapered shape that tapers downwards, and the center of the bottom of the processing chamber (1) is sealed to the output pipe (103).

3. The waste gas filtration and purification device for recycled copper smelting according to claim 2, characterized in that: The inner tube (105) is mounted with a slider (106) at the bottom of the outer wall inside the throat tube (104). The slider (106) is used to slide against the inner wall of the throat tube (104) when the inner tube (105) moves upward. A locking block (107) is fixedly installed at the top opening of the throat tube (104). The locking block (107) is used to contact the slider (106) and limit it. A trumpet-shaped expansion plate (108) is installed on the top of the inner tube (105). The expansion plate (108) covers the gap between the inner tube (105) and the throat tube (104) when the slider (106) does not contact the locking block (107).

4. The waste gas filtration and purification device for recycled copper smelting according to claim 3, characterized in that: The one-way flap (109) can only be flipped downwards to expose the internal space of the inner tube (105) for airflow to enter.

5. The waste gas filtration and purification device for recycled copper smelting according to claim 4, characterized in that: The processing chamber (1) is a hollow cylinder.

6. The waste gas filtration and purification device for recycled copper smelting according to claim 4, characterized in that: The hybrid structure includes a branch pipe (2) sealed to the end of the gas supply pipe (102), the branch pipe (2) surrounding the top of the inner side of the processing chamber (1), and the body of the branch pipe (2) adhering to the inner side wall of the processing chamber (1) and extending downward to its middle. Below the branch pipe (2) is an airflow baffle (3) installed at the bottom of the inner side of the processing chamber (1), and the airflow baffle (3) extends downward to the edge of the expansion plate (108).

7. The waste gas filtration and purification device for recycled copper smelting according to claim 5, characterized in that: The hybrid structure also includes a guide plate (4) that surrounds the conical inner wall at the bottom of the processing chamber (1). The guide plate (4) is spirally surrounded by the inner wall at the bottom of the processing chamber (1), and the diameter of the spiral is larger the closer it is to the top of the processing chamber (1). The center of the guide plate (4) is sleeved on the side of the throat (104) to guide the air force blown out by the throat (104) to spiral upward around the inner wall of the processing chamber (1).

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