Waste gas desulfurization device for waste lead storage battery treatment

Abstract

The utility model discloses a waste gas desulfurization device for waste lead storage battery treatment, which comprises a gas inlet pipe, a device body and a gas exhaust pipe, the gas inlet pipe is arranged on the left side of the device body, and the gas exhaust pipe is arranged above the device body; the device body further comprises a spraying desulfurization system, a demisting system and a filtering device, the spraying desulfurization system is arranged in the device body and located above the air inlet pipe, the demisting system is arranged above the spraying desulfurization system, and the filtering device is arranged on the right side of the lower portion of the device body. And the spraying desulfurization system and the demisting system are respectively in telecommunication connection with a control cabinet of a production workshop. The device has the functions that the mixing effect of tail gas and sulfur removal water mist is improved by generating air flow, the dust removal and sulfur removal effect of the device is improved, and meanwhile water vapor entering a demisting system is reduced by centrifugally condensing water drops in the rotating air flow on the inner wall of the condensing barrel; the descaling effect on the demister is improved; and pipeline blockage caused by deposition of dirt in a subsequent conveying pipeline is prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of desulfurization devices, and in particular relates to a waste gas desulfurization device for the treatment of waste lead-acid batteries. Background Technology

[0002] In the waste lead-acid battery processing and recycling process, after the waste lead-acid batteries are crushed and sorted, lead paste and grids and other lead-containing waste materials are sent into a rotary kiln to smelt and recover the lead. During the process, a large amount of sulfur-containing and dust-containing gas is generated, and these gases need to be treated before being discharged.

[0003] Existing technologies, such as the waste gas pollutant purification system and method disclosed in Chinese Patent (CN115090103B) for waste lead-acid battery treatment, include a dust collector and a desulfurization tower connected to each other. The dust collector is used to absorb lead dust in the smelting waste gas; the desulfurization tower is used to remove sulfur dioxide and lead dust from the smelting waste gas. A demister is installed inside the desulfurization tower. The demister includes several blades arranged in parallel. The belly of the blade is bent. One end of the blade is hinged to a support rod one, and the other end is embedded in a support rod two. Hinges are hinged between adjacent blades. Under normal conditions, the hinges have a folding angle. The outermost blade is connected to an adjustment mechanism. The adjustment mechanism is used to push the support rod two away from the blade and simultaneously stretch the blade, so that the hinges open and increase the distance between the blades. A spray assembly is installed inside the desulfurization tower to wash away the scale on the surface of the blades of the demister.

[0004] This method has the following drawbacks: First, the device uses spraying to naturally mix the desulfurizing agent with sulfur-containing gas for desulfurization and dust removal. This natural mixing method has low mixing efficiency, indirectly leading to poor desulfurization and dust removal effects. Additionally, the exhaust gas after desulfurization contains a large amount of water vapor that enters the demister. Second, the device uses high-pressure water to wash the surface of the demister and adjusts the angle of the demister to remove adhering dirt. However, because the demister is designed with corners, the spray water cannot be sprayed directly and vertically onto the corner surfaces, reducing the descaling effect. Third, the treated water accumulated below the device contains a large amount of dust and dirt deposits. These deposits need to be discharged through pipes into the filtration system for filtration. However, after prolonged use, these deposits will adhere to the inner wall of the discharge pipes, clogging them and causing maintenance problems.

[0005] Therefore, this paper provides a waste gas desulfurization device for the treatment of waste lead-acid batteries. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model discloses a waste gas desulfurization device for waste lead-acid battery treatment. By generating airflow, it increases the mixing effect of exhaust gas and desulfurization water mist, thereby improving the dust removal and desulfurization effect of the device. At the same time, water droplets in the rotating airflow centrifugally condense on the inner wall of the condensation cylinder, reducing the amount of water vapor entering the demister system; improving the descaling effect on the demister; and filtering out the dirt, preventing dirt from accumulating in the subsequent conveying pipeline and causing pipeline blockage.

[0007] To achieve the above-mentioned technical effects, this utility model provides a waste gas desulfurization device for waste lead-acid battery treatment, including an inlet pipe, a device body, and an exhaust pipe. The inlet pipe is located on the left side of the device body, and the exhaust pipe is located above the device body. The device body also includes a spray desulfurization system, a demisting system, and a filter device. The spray desulfurization system is located inside the device body and above the inlet pipe, the demisting system is located above the spray desulfurization system, and the filter device is located on the lower right side of the device body. The spray desulfurization system and the demisting system are respectively electrically connected to the control cabinet of the production workshop.

[0008] Preferably, the spray desulfurization system further includes spray pipes, a mixed-flow fan, and a condensation cylinder. The spray pipes are respectively arranged above and below the mixed-flow fan, the mixed-flow fan is arranged above the air inlet pipe of the connecting device body, and the condensation cylinder is arranged above the mixed-flow fan.

[0009] Preferably, the condensation cylinder further includes an upper section and a lower section, wherein the taper of the upper section of the condensation cylinder is greater than the taper of the lower end of the condensation cylinder.

[0010] Preferably, the demisting system further includes a demister, a cleaning mechanism, and a high-pressure spray pipe. The demister is located above the condensation cylinder, the cleaning mechanism is located inside the rear side of the demister, and the high-pressure spray pipe is located above the demister.

[0011] Preferably, the cleaning mechanism further includes a mounting plate, a cleaning sleeve, a screw, and a drive motor. The mounting plate is located on the rear side of the corrugated blades of the demister and is slidably connected to the corrugated blades. The cleaning sleeve is located on the outside of the connection between the corrugated blades and the mounting plate and wraps around the corrugated blades. The screw is located on the left and right sides of the mounting plate, passes through the mounting plate, and is slidably connected to the mounting plate by threads. The front side of the screw is rotatably connected to the demister, and the rear side of the screw is connected to the output end of the drive motor.

[0012] Preferably, the filtration device further includes a drain pipe, a housing, a filter element, a top cover, a connecting plate, and a drain pipe. The drain pipe is located on the lower right side of the device body. The housing is located on the right side of the drain pipe and the drain pipe is connected to the upper part of the housing. The filter element is located inside the housing and below the connection between the housing and the drain pipe. The top cover is threadedly connected to the upper part of the housing. The connecting plates are respectively located on the front and rear sides between the top cover and the filter element. The drain pipe is located on the lower right side of the housing.

[0013] Preferably, the drain pipe is inclined toward the shell.

[0014] Preferably, the filter element has a hollow structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The device is equipped with spray pipes, a mixed-flow fan, and a condensation cylinder. By generating airflow, it increases the mixing effect of exhaust gas and desulfurization water mist, improving the dust removal and desulfurization efficiency of the device. At the same time, water droplets in the rotating airflow centrifugally condense on the inner wall of the condensation cylinder, reducing the amount of water vapor entering the demisting system. It is equipped with a demister, a cleaning mechanism, and a high-pressure spray pipe. While the cleaning mechanism scrapes off the dirt, the high-pressure spray pipe is activated, spraying high-pressure water into the gaps of the demister to flush the dirt downwards, improving the descaling effect of the demister. A filtration device is installed to pre-filter the wastewater discharged from the device, filtering out the dirt and preventing dirt from accumulating in the subsequent conveying pipes and causing blockages. Attached Figure Description

[0017] Figure 1 This is an isometric view of the present invention;

[0018] Figure 2 This is a front view of the present invention;

[0019] Figure 3 This is the left view of this utility model;

[0020] Figure 4 yes Figure 3 A sectional view of section a.

[0021] Figure 5 yes Figure 4 A partial schematic diagram of b in the middle;

[0022] Figure 6 yes Figure 4 A partial schematic diagram of c in the middle;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Inlet pipe; 2. Exhaust pipe; 3. Spray desulfurization system; 4. Demisting system; 5. Filter device; 6. Spray pipeline; 7. Mixed flow fan; 8. Condensation cylinder; 9. Demister; 10. Cleaning mechanism; 11. High-pressure spray pipeline; 12. Mounting plate; 13. Cleaning sleeve; 14. Screw; 15. Drive motor; 16. Drain pipe; 17. Housing; 18. Filter element; 19. Top cover; 20. Connecting plate; 21. Drain pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] The prior art in this embodiment has the following problems: The inventors have found the following defects in the prior art: 1. The device uses spraying to naturally mix the desulfurizing agent with sulfur-containing gas for desulfurization and dust removal. This natural mixing method has low mixing efficiency, which indirectly leads to poor desulfurization and dust removal effects. At the same time, the exhaust gas after desulfurization contains a large amount of water vapor that enters the demister; 2. The device uses high-pressure water to wash the surface of the demister and adjusts the angle of the demister to remove the dirt attached to it. However, because the demister is designed with a corner structure, the spray water cannot be sprayed directly vertically onto the corner surface, resulting in a reduced descaling effect; 3. The treatment water accumulated below the device contains a large amount of dust and dirt deposits. These deposits need to be discharged through pipes into the filtration system for filtration and discharge. However, after long-term use, these deposits will adhere to the inner wall of the sewage pipe, clogging the pipe and causing maintenance problems.

[0027] Therefore, as Figures 1 to 6 As shown, the inventor provides a waste gas desulfurization device for waste lead-acid battery treatment, including an inlet pipe 1, a device body, and an exhaust pipe 2. The inlet pipe 1 is located on the left side of the device body, and the exhaust pipe 2 is located above the device body. The device body also includes a spray desulfurization system 3, a demisting system 4, and a filter device 5. The spray desulfurization system 3 is located inside the device body and above the inlet pipe 1. The demisting system 4 is located above the spray desulfurization system 3. The filter device 5 is located on the lower right side of the device body. The spray desulfurization system 3 and the demisting system 4 are respectively electrically connected to the control cabinet (not shown in the figure) of the production workshop.

[0028] Using the above scheme, the exhaust gas enters the lower part of the device body from the intake pipe 1, and after passing through the spray desulfurization system 3 to remove sulfide dust, it enters the demisting system 4 to remove moisture, and then is discharged through the exhaust pipe 2. After long-term use, the surface of the demisting system 4 is automatically activated to clean with high-pressure water spray while automatically scraping off dirt. The dirt falls downward into the water accumulation below the device body, and after the dirt settles, it is discharged after passing through the filter device 5.

[0029] Furthermore, the spray desulfurization system 3 also includes a spray pipe 6, a mixed flow fan 7, and a condensation cylinder 8. The spray pipe 6 is respectively located above and below the mixed flow fan 7. The mixed flow fan 7 is located above the air inlet pipe 1 of the connecting device body, and the condensation cylinder 8 is located above the mixed flow fan 7.

[0030] When the exhaust gas enters the device body through the exhaust pipe 2, it first comes into contact with the desulfurization water mist sprayed from the nozzle at the front end of the spray pipe below the mixing fan 7. At the same time, the mixing fan 7 rotates slowly, generating airflow that mixes the exhaust gas and desulfurization water mist below while swirling the mixed gas upward. During this process, the dust and sulfides in the exhaust gas are initially removed. After passing through the mixing fan 7, it mixes upward with the water mist sprayed from the spray pipe 6 above the mixing fan 7 to further remove the dust and sulfides. Then, the exhaust gas carries a large amount of water vapor upward and rotates towards the demisting system 4. During this process, some of the water vapor condenses on the inner wall of the condensation cylinder 8 as it rotates and rises, and then flows downward to the bottom of the device body. This increases the mixing effect of the exhaust gas and desulfurization water mist by generating airflow, thereby improving the dust removal and desulfurization effect of the device. At the same time, the water droplets in the rotating airflow centrifugally condense on the inner wall of the condensation cylinder 8 and flow downward to the bottom of the device body, reducing the amount of water vapor entering the demisting system 4.

[0031] Furthermore, the condensation cylinder 8 also includes an upper section and a lower section, with the taper of the upper section of the condensation cylinder 8 being greater than the taper of the lower end of the condensation cylinder 8;

[0032] After being treated by two spray water mists, the rotating exhaust gas carrying water vapor rises through the condensation cylinder 8. During the process, it first passes through the lower condensation cylinder 8, where the opening narrows upwards. The water vapor is condensed and adheres to the inner wall of the condensation cylinder 8 under the action of centrifugal force, forming water droplets that fall down. Then, it enters the upper condensation cylinder 8, where the water in the exhaust gas is condensed in the same way. The upper condensation cylinder 8 has a larger taper than the lower condensation cylinder 8, which increases the scouring intensity between the water vapor and the inner wall, allowing more water vapor to condense and fall down, thus reducing the water vapor in the exhaust gas.

[0033] Furthermore, the demisting system 4 also includes a demister 9, a cleaning mechanism 10, and a high-pressure spray pipe 11. The demister 9 is located above the condensation cylinder 8, the cleaning mechanism 10 is located inside the rear side of the demister 9, and the high-pressure spray pipe 11 is located above the demister 9.

[0034] In this process, the gas after desulfurization and dust removal removes some water vapor in the condensation cylinder 8 and then enters the demister 9. The water vapor is further condensed inside the demister 9, and the dried gas is discharged upward through the exhaust pipe 2. After long-term use, dirt condenses on the surface of the gaps inside the demister 9. At this time, the cleaning mechanism 10 can be started by the control cabinet to move forward and scrape off the dirt in the gaps of the demister 9. During the process, the high-pressure spray pipe 11 is started to spray high-pressure water into the gaps of the demister 9. While the cleaning mechanism 10 scrapes off the dirt, it also flushes the dirt downward. The wastewater eventually flows into the bottom of the device body.

[0035] Furthermore, the cleaning mechanism 10 also includes a mounting plate 12, a cleaning sleeve 13, a screw 14, and a drive motor 15. The mounting plate 12 is located on the rear side of the corrugated blades of the demister 9 and is slidably connected to the corrugated blades. The cleaning sleeve 13 is located on the outside of the connection between the corrugated blades and the mounting plate 12 and wraps around the corrugated blades. The screw 14 is located on the left and right sides of the mounting plate 12, passes through the mounting plate 12, and is slidably connected to the mounting plate 12 with threads. The front side of the screw 14 is rotatably connected to the demister 9, and the rear side of the screw 14 is connected to the output end of the drive motor 15.

[0036] When the cleaning mechanism 10 is started, the drive motor 15 drives the screw 14 to rotate inside the demister 9, and then drives the cleaning sleeve 13 on the mounting plate 12 to slide in the gap of the corrugated blades of the demister 9 through the thread, scraping off the dirt on the surface of the corrugated blades of the demister 9, thus achieving the cleaning effect.

[0037] Furthermore, the filtration device 5 also includes a drain pipe 16, a housing 17, a filter element 18, a top cover 19, a connecting plate 20, and a drain pipe 21. The drain pipe 16 is located on the lower right side of the device body. The housing 17 is located on the right side of the drain pipe 16 and the drain pipe 16 is connected to the upper part of the housing 17. The filter element 18 is located inside the housing 17 and below the connection between the housing 17 and the drain pipe 16. The top cover 19 is threaded to the upper part of the housing 17. The connecting plates 20 are respectively located on the front and rear sides between the top cover 19 and the filter element 18. The drain pipe 21 is located on the lower right side of the housing 17.

[0038] In this process, the wastewater generated during the treatment of exhaust gas is discharged through the drain pipe 16 into the filter element 18 inside the housing 17 for filtration. The filtered water is discharged from the lower drain pipe 21 to the next treatment process. If the filtration effect of the filter element 18 is poor, after closing the connecting valve between the main body of the device and the filter device 5, the filter element 18 connected to the connecting plate 20 can be removed by unscrewing the top cover 19, the sediment in the filter element 18 can be cleaned, and then the top cover 19 and the filter element 18 can be screwed back into the housing 17 to continue the filtration process. In this way, by setting up a filtration mechanism to pre-filter the wastewater discharged from the device, the dirt in it can be filtered out, preventing the dirt from accumulating in the subsequent conveying pipes and causing pipe blockage.

[0039] Furthermore, the drain pipe 16 is inclined toward the housing 17;

[0040] The drain pipe 16, which is inclined toward the housing 17, can discharge the residual sewage in the pipe to the lower right into the filter element 18 for filtration after the valve with the device body is cut off, thus preventing the sewage in the drain pipe 16 from being directly discharged into the drain pipe 21 and causing pollution during the removal of the filter element 18.

[0041] Furthermore, the filter element 18 has a hollow structure;

[0042] The hollow filter element 18 can accumulate the filtered dirt and drain the water. After removing the filter element 18, the dirt in the middle can be taken out and treated together.

[0043] In summary, the device is equipped with a spray pipe 6, a mixed-flow fan 7, and a condensation cylinder 8. By generating airflow, it increases the mixing effect of exhaust gas and desulfurization water mist, thereby improving the dust removal and desulfurization effect of the device. At the same time, the water droplets in the rotating airflow centrifugally condense on the inner wall of the condensation cylinder 8, reducing the amount of water vapor entering the demisting system 4. It is also equipped with a demister 9, a cleaning mechanism 10, and a high-pressure spray pipe 11. While the cleaning mechanism 10 scrapes off the dirt, the high-pressure spray pipe 11 is activated, spraying high-pressure water into the gaps of the demister 9 to flush the dirt downwards, thus improving the descaling effect of the demister 9. A filtration device 5 is also installed to pre-filter the wastewater discharged from the device, filtering out the dirt and preventing the dirt from accumulating in the subsequent conveying pipes and causing blockages.

[0044] The working principle of this utility model:

[0045] When the exhaust gas enters the device body through the exhaust pipe 2, it first comes into contact with the desulfurization water mist sprayed from the nozzle at the front end of the spray pipe below the mixing fan 7. At the same time, the mixing fan 7 rotates slowly, generating airflow that mixes the exhaust gas and desulfurization water mist below while simultaneously lifting the mixed gas upwards. During this process, dust and sulfides in the exhaust gas are initially removed. After passing through the mixing fan 7, it mixes upwards with the water mist sprayed from the spray pipe 6 located above the mixing fan 7 to further remove dust and sulfides. Then, the exhaust gas, carrying a large amount of water vapor, rotates upwards and is discharged towards the demisting system 4. The rotating exhaust gas, carrying water vapor, passes upwards through the condensation cylinder 8, first passing through the lower section of the condensation cylinder. The opening of the condensation cylinder 8 narrows upwards. Water vapor condenses and adheres to the inner wall of the condensation cylinder 8 under the action of centrifugal force. After condensing into water droplets, it falls down and then enters the upper condensation cylinder 8 to condense the water in the exhaust gas in the same way. The taper of the upper condensation cylinder 8 is larger than that of the lower condensation cylinder 8, which increases the scouring intensity between the water vapor and the inner wall, allowing more water vapor to condense and fall. This can increase the mixing effect of exhaust gas and desulfurization water mist by generating airflow, thereby improving the dust removal and desulfurization effect of the device. At the same time, the water droplets in the rotating airflow centrifugally condense on the inner wall of the condensation cylinder 8 and flow downwards into the bottom of the device body, reducing the amount of water vapor entering the demisting system 4.

[0046] After desulfurization and dust removal, the gas enters the demister 9 after removing some water vapor in the condensation cylinder 8. The water vapor is further condensed inside the demister 9. The dried gas is then discharged upward through the exhaust pipe 2. After long-term use, dirt condenses on the surface of the gaps inside the demister 9. This can be addressed by starting the cleaning mechanism 10 from the control cabinet. The drive motor 15 drives the screw 14 to rotate inside the demister 9. The screw drives the cleaning sleeve 13 on the mounting plate 12 to slide in the gaps of the corrugated blades of the demister 9, scraping off the dirt from the surface of the corrugated blades of the demister 9. During this process, the high-pressure spray pipe 11 is activated, spraying high-pressure water into the gaps of the demister 9. While the cleaning mechanism 10 scrapes off the dirt, it also flushes the dirt downwards. The wastewater eventually flows into the bottom of the device body.

[0047] Wastewater generated during the exhaust gas treatment process is discharged through drain pipe 16 into filter element 18 inside housing 17 for filtration. The filtered water is discharged through lower drain pipe 21 to the next treatment stage. If the filtration effect of filter element 18 is poor, the filter element 18 connected to connecting plate 20 can be removed by unscrewing top cover 19 after closing the connecting valve between the main body of the device and the filter device 5. The hollow filter element 18 can accumulate the filtered dirt, drain the water, and remove the filter element 18 so that the dirt in the middle can be taken out for treatment. Clean the filter element 18. After the sediment is removed, the top cover 19 and the filter element 18 are screwed into the housing 17 for further filtration. This way, a filtration mechanism is set up to pre-filter the sewage discharged from the device, removing the dirt and preventing it from accumulating in the subsequent conveying pipes and causing blockages. The drain pipe 16, which is inclined towards the housing 17, can discharge the remaining sewage in the pipe to the lower right into the filter element 18 for filtration after the valve to the device body is cut off. This prevents the sewage in the drain pipe 16 from being directly discharged into the drain pipe 21 during the removal of the filter element 18, thus preventing pollution.

[0048] This concludes the description of the working principle of the device.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] 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 waste gas desulfurization device for treating waste lead-acid batteries, comprising an inlet pipe (1), a device body, and an exhaust pipe (2), wherein the inlet pipe (1) is located on the left side of the device body, and the exhaust pipe (2) is located above the device body, characterized in that: The device body also includes a spray desulfurization system (3), a demisting system (4), and a filter device (5). The spray desulfurization system (3) is located inside the device body and above the air inlet pipe (1). The demisting system (4) is located above the spray desulfurization system (3). The filter device (5) is located on the lower right side of the device body. The spray desulfurization system (3) and the demisting system (4) are respectively connected to the control cabinet of the production workshop by telecommunications.

2. The waste gas desulfurization device for treating waste lead-acid batteries according to claim 1, characterized in that: The spray desulfurization system (3) also includes a spray pipe (6), a mixed flow fan (7), and a condensation cylinder (8). The spray pipe (6) is respectively located above and below the mixed flow fan (7). The mixed flow fan (7) is located above the air inlet pipe (1) of the connecting device body. The condensation cylinder (8) is located above the mixed flow fan (7).

3. The waste gas desulfurization device for treating waste lead-acid batteries according to claim 2, characterized in that: The condensation cylinder (8) also includes an upper section and a lower section, and the taper of the upper section of the condensation cylinder (8) is greater than the taper of the lower end of the condensation cylinder (8).

4. The waste gas desulfurization device for treating waste lead-acid batteries according to claim 1, characterized in that: The demisting system (4) also includes a demister (9), a cleaning mechanism (10), and a high-pressure spray pipe (11). The demister (9) is located above the condensation cylinder (8), the cleaning mechanism (10) is located inside the rear side of the demister (9), and the high-pressure spray pipe (11) is located above the demister (9).

5. A waste gas desulfurization device for treating waste lead-acid batteries according to claim 4, characterized in that: The cleaning mechanism (10) further includes a mounting plate (12), a cleaning sleeve (13), a screw (14), and a drive motor (15). The mounting plate (12) is located on the rear side of the wave-shaped blade of the demister (9) and is slidably connected to the wave-shaped blade. The cleaning sleeve (13) is located on the outside of the connection between the wave-shaped blade and the mounting plate (12) and wraps around the wave-shaped blade. The screw (14) is located on the left and right sides of the mounting plate (12), passes through the mounting plate (12), and is slidably connected to the mounting plate (12) by threads. The front side of the screw (14) is rotatably connected to the demister (9), and the rear side of the screw (14) is connected to the output end of the drive motor (15).

6. The waste gas desulfurization device for treating waste lead-acid batteries according to claim 1, characterized in that: The filter device (5) further includes a drain pipe (16), a housing (17), a filter element (18), a top cover (19), a connecting plate (20), and a drain pipe (21). The drain pipe (16) is located on the lower right side of the device body. The housing (17) is located on the right side of the drain pipe (16) and the drain pipe (16) is connected to the upper part of the housing (17). The filter element (18) is located inside the housing (17) and below the connection between the housing (17) and the drain pipe (16). The top cover (19) is threaded to the top of the housing (17). The connecting plates (20) are respectively located on the front and rear sides between the top cover (19) and the filter element (18). The drain pipe (21) is located on the lower right side of the housing (17).

7. A waste gas desulfurization device for treating waste lead-acid batteries according to claim 6, characterized in that: The drain pipe (16) is inclined toward the housing (17).

8. A waste gas desulfurization device for treating waste lead-acid batteries according to claim 6, characterized in that: The filter element (18) has a hollow structure.

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