A high manganese steel welding waste gas treatment device and method based on NaOH solution

Abstract

The present invention discloses a high-manganese steel welding waste gas treatment device and method based on NaOH solution, which relates to the field of industrial waste treatment technology and includes the following steps: S1, waste gas collection: The device integrates HEPA high-efficiency particle filter material and activated carbon adsorption layer, which can effectively filter ultrafine particulate manganese vapor released during welding and adsorb harmful gases such as CO and NO2, thereby improving operational safety and reducing respiratory health risks. The protective device adopts a multi-layer filter material structure design. The high-manganese steel welding waste gas treatment device and method based on NaOH solution, by real-time monitoring of waste gas concentration and welding time, the system can intelligently calculate the replacement cycle of the filter element, ensure the efficient operation of the equipment, avoid replacing the filter element too early or too late, improve the dust removal effect, and combine centrifugal separation, activated carbon adsorption and spray neutralization technology to ensure the efficient removal of harmful gases and smoke generated during welding, with a purification efficiency of more than 99%.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial waste treatment, and in particular to a high manganese steel welding waste gas treatment device based on NaOH solution and a method thereof. Background Art

[0002] High-manganese steel is widely used in industrial production, particularly in heavy machinery, shipbuilding, and metallurgy. During welding, high-manganese steel produces a large amount of harmful gases and fumes, particularly manganese vapor. These gases not only pollute the environment but also have serious health impacts on operators. Existing welding waste gas treatment equipment has significant difficulty treating gaseous pollutants such as manganese vapor and NO2. This is particularly true in high-concentration welding environments, resulting in poor treatment results. This often leads to long-term exposure of workers to high-concentration gases, which can cause a range of health problems.

[0003] Currently, many welding waste gas treatment devices rely on a single purification technology, such as activated carbon adsorption, filtration, etc., but these devices have the following problems:

[0004] 1. Limited dust removal effect: Many devices have poor removal effects on fine particulate matter or gaseous pollutants, especially the removal efficiency of manganese vapor and nitrogen oxides is not high.

[0005] 2. It is difficult to accurately predict the consumables replacement cycle: Most existing dust removal equipment does not have an automated consumables monitoring system. Consumables (such as activated carbon filters) will lose their adsorption capacity after a period of use, but failure to replace them in time will affect the dust removal efficiency.

[0006] Complex waste liquid treatment: The treatment process of the waste liquid generated during the spraying process is cumbersome. Existing technologies often require complex chemicals and multiple reaction steps, which increases operating costs. Summary of the Invention

[0007] The object of the present invention is to provide a high manganese steel welding waste gas treatment device and method based on NaOH solution to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a method for treating high manganese steel welding waste gas based on NaOH solution, the method comprising the following steps:

[0009] S1. Waste gas collection: Workers wear a special composite welding protective breathing device for welding operations. This device integrates HEPA high-efficiency particle filter material and activated carbon adsorption layer, which can effectively filter ultrafine particulate manganese vapor released during welding and adsorb harmful gases such as CO and NO2, improving work safety and reducing respiratory health risks. The protective device adopts a multi-layer filter material structure design with high flux, low resistance and high adsorption efficiency. At the same time, the gas injection pipe transports the harmful gases generated during welding into the interior of the centrifuge;

[0010] S2. Machine dust removal:

[0011] S21. Centrifugal separation: The centrifuge is used to remove solid particles from the exhaust gas at high speed, reducing the purification burden on subsequent exhaust gas purification components. The centrifuge generates centrifugal force through high-speed rotation, separating the solid particles into a storage box for automatic storage.

[0012] S22, activated carbon adsorption: The exhaust gas after centrifugal treatment in the centrifuge is transported into the exhaust gas purification component through a connecting pipe to further remove harmful gases such as NO2 from the gas. Since the exhaust gas purification component adopts a modular design, the staff can replace and maintain the activated carbon carrier according to actual needs;

[0013] S23, Spray Neutralization: The waste gas filtered in the waste gas purification component is automatically transported into the interior of the gas scrubber. At this time, the operation of the atomizing spray component forms fine atomized droplets of NaOH solution through the nozzle, which reacts with acidic gases such as SO2 and HF in the waste gas to produce harmless salt compounds such as Na2SO3 and NaF. This spray neutralization process is an efficient and rapid dynamic absorption reaction that can effectively reduce the corrosiveness and toxicity of the waste gas and convert harmful components into non-toxic salt solutions (Na2SO3, NaF), achieving the first stage of deep waste gas purification. However, due to factors such as gas-liquid contact efficiency and reaction time, some acidic gases may not react completely, so they need to enter the next step of waste liquid enhanced treatment.

[0014] S3. Waste liquid treatment:

[0015] S31, Chemical reaction tank treatment: The waste liquid generated after multiple spraying is transported to the chemical reaction tank through the sewage pipe. This step is to further neutralize the acidic residual pollutants such as SO2 and HF that have not reacted completely. By adding NaOH neutralizer to the reaction tank and combining it with a stirring system to increase the reaction rate and uniformity, further ensuring the complete reaction. The specific reaction is:

[0016] SO2+2NaOH→Na2SO3+H2O

[0017] HF+NaOH→NaF+H2O;

[0018] This step not only compensates for the incompleteness of the spray reaction, but also adjusts the pH of the waste liquid, reduces the load on the subsequent ion exchange system, and ensures that the final wastewater discharge meets the standards and resources are reused.

[0019] S32. Ion exchange treatment: After the waste liquid is treated in the chemical reaction tank, it enters the ion exchange system to further remove metal ions such as manganese and iron in the waste liquid, ensuring that the liquid meets environmental emission standards and can be recycled.

[0020] Furthermore, in step S1, the workers wear a special composite welding protective breathing device to perform welding operations. The device integrates HEPA high-efficiency particle filter material and activated carbon adsorption layer, which can effectively filter ultrafine particulate manganese vapor released during welding and adsorb harmful gases such as CO and NO2, ensuring that the air inhaled by the welders is non-toxic and harmless. In order to improve the dust removal effect, the filter element adopts a multi-layer structure with large-pore activated carbon on the surface and microporous activated carbon on the inside to maximize the adsorption of pollutants.

[0021] Furthermore, in step S21, the centrifugally separated particulate impurities collected in the storage box can be dried, sintered and reduced to smelt to convert the separated manganese particles into manganese alloy or high-purity metallic manganese for recycling.

[0022] Furthermore, in step S22, a gas detection device is installed to monitor the concentration of pollutants in the exhaust gas, such as manganese vapor, NO2, etc., in real time, and the data is transmitted to the control system. Then, according to the welding time recording device: for each welding operation during the welding process, the system automatically records the welding time t 焊接 , in order to calculate the filter element replacement cycle, the specific calculation formula is:

[0023]

[0024] According to the real-time gas concentration C 污染物 and welding time t 焊接 , calculate the filter element replacement cycle T 换芯 The control panel will prompt the operator to replace it.

[0025] Furthermore, in step S32, the treated clean water can be re-formed into NaOH solution after passing the inspection of the online water quality monitoring system and transported to the bottom of the partition plate, ensuring that the water resources in the spraying process can be recycled.

[0026] Furthermore, the treated waste residue is solidified to form environmentally friendly bricks, or the organic waste residue is converted into building filling materials through high-temperature incineration, thereby further reducing environmental pollution.

[0027] A high-manganese steel welding waste gas treatment device based on NaOH solution, the high-manganese steel welding waste gas treatment device based on NaOH solution includes a waste gas treatment box, a delivery pipe and a drain pipe, an inspection door is installed on the outside of the waste gas treatment box, and a centrifugal separation component is fixedly installed on the inner surface of the upper end of the waste gas treatment box, and the inner surface of the waste gas treatment box is fixedly connected to a waste gas purification component, and the end of the waste gas purification component is fixedly installed with a gas washing bin, and an atomizing spray component is installed on the top of the gas washing bin, the delivery pipe is fixedly installed on the top of the atomizing spray component, and the end of the delivery pipe is fixedly connected to a water pump, and the inner side of the water pump is fixedly connected to the outer side of the waste gas treatment box, and a partition plate is fixedly installed on the inner surface of the waste gas treatment box, and support columns are symmetrically installed on the top of the partition plate, and the drain pipe is fixedly installed on the side of the waste gas treatment box.

[0028] Furthermore, the centrifugal separation assembly includes a centrifuge, and an air injection pipe is fixedly installed on the top of the centrifuge, and a threaded mounting seat is fixedly connected to the bottom of the centrifuge, and a storage box is movably installed on the bottom of the threaded mounting seat, and an annular threaded mounting plate is fixedly connected to the top of the storage box.

[0029] Furthermore, the exhaust gas purification component includes an exhaust gas purification chamber, and an activated carbon carrying box is movably installed on the inner surface of the exhaust gas purification chamber, and a connecting seat is fixedly installed on the outer side of the activated carbon carrying box, and a handle is fixedly connected to the outer side of the connecting seat.

[0030] Furthermore, the atomizing spray assembly includes a hollow connecting plate, and the bottom of the hollow connecting plate is equipped with atomizing nozzles in an array at equal distances, and the atomizing nozzles are embedded in the interior of the air washing tank, and a fixing rod is symmetrically fixed on the top of the hollow connecting plate. At the same time, the hollow connecting plate forms a fixed structure with the exhaust gas treatment box through the fixing rod.

[0031] The present invention provides a high manganese steel welding waste gas treatment device and method based on NaOH solution, which has the following beneficial effects:

[0032] 1. Intelligent calculation of filter element replacement cycle: By real-time monitoring of exhaust gas concentration and welding time, the system can intelligently calculate the filter element replacement cycle to ensure efficient operation of the equipment, avoid replacing the filter element too early or too late, and improve the dust removal effect.

[0033] 2. Efficient exhaust gas purification and multi-stage treatment: Combining centrifugal separation, activated carbon adsorption and spray neutralization technology, it ensures efficient removal of harmful gases and smoke generated during the welding process, with a purification efficiency of over 99%.

[0034] 3. Simplified waste liquid treatment process: The waste liquid is treated with simple neutralizers (such as sodium hydroxide) and precipitants (such as lime) to generate harmless precipitates, avoiding the use of complex chemical agents and reducing operating costs. The chemical reaction tank is equipped with a stirring device to make the reaction more complete.

[0035] 4. Recycling of waste gas and waste liquid: The designed clean water circulation module and waste liquid treatment module allow the treated water and liquid to be recycled, reducing wastewater discharge and meeting environmental protection requirements.

[0036] 5. Giving equal weight to environmental protection and economy: By purifying welding waste gas and recovering manganese particles, efficient utilization of resources is achieved, while reasonable design reduces operating costs and waste disposal costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the front three-dimensional structure of a high manganese steel welding waste gas treatment device based on NaOH solution of the present invention;

[0038] Figure 2 This is a schematic front cross-sectional view of a high manganese steel welding waste gas treatment device based on NaOH solution according to the present invention;

[0039] Figure 3 This is a rear perspective structural diagram of a high manganese steel welding waste gas treatment device based on NaOH solution according to the present invention;

[0040] Figure 4 This is a schematic diagram of the three-dimensional structure of a centrifuge-storage box of a high-manganese steel welding waste gas treatment device based on NaOH solution of the present invention;

[0041] Figure 5 This is a schematic diagram of the three-dimensional structure of a hollow connecting plate-atomizing nozzle of a high manganese steel welding waste gas treatment device based on NaOH solution of the present invention;

[0042] Figure 6 This is a schematic diagram of the overall operation process of a method for treating high manganese steel welding waste gas based on NaOH solution according to the present invention;

[0043] Figure 7 This is a schematic diagram of the mechanical dust removal operation process of a method for treating high manganese steel welding waste gas based on NaOH solution according to the present invention;

[0044] Figure 8 The present invention is a waste liquid treatment operation flow diagram of a high manganese steel welding waste gas treatment method based on NaOH solution.

[0045] In the figure: 1. Exhaust gas treatment box; 2. Inspection door; 3. Centrifugal separation assembly; 31. Centrifugal separator; 32. Gas injection pipe; 33. Threaded mounting seat; 34. Storage box; 35. Annular threaded mounting plate; 4. Exhaust gas purification assembly; 41. Exhaust gas purification chamber; 42. Activated carbon carrier box; 43. Connecting seat; 44. Handle; 5. Gas washing chamber; 6. Atomizing spray assembly; 61. Hollow connecting plate; 62. Atomizing nozzle; 63. Fixing rod; 7. Delivery pipe; 8. Water pump; 9. Partition plate; 10. Support column; 11. Sewage pipe. DETAILED DESCRIPTION

[0046] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0047] like Figure 6-Figure 8 As shown, a method for treating high manganese steel welding waste gas based on NaOH solution, the method for treating high manganese steel welding waste gas based on NaOH solution comprises the following steps:

[0048] S1. Waste gas collection: Workers wear special composite welding protective breathing apparatus to perform welding operations. At the same time, the gas injection pipe 32 transports the harmful gases generated during the welding process into the interior of the centrifuge 31. In step S1, workers wear special composite welding protective breathing apparatus to perform welding operations. The apparatus integrates HEPA high-efficiency particle filter material and activated carbon adsorption layer, which can effectively filter ultrafine particulate manganese vapor released during welding and adsorb harmful gases such as CO and NO2, ensuring that the air inhaled by welders is non-toxic and harmless. To improve the dust removal effect, the filter element adopts a multi-layer structure with large-pore activated carbon on the surface and microporous activated carbon on the inside to maximize the adsorption of pollutants.

[0049] S2. Machine dust removal:

[0050] S21, centrifugal separation: The centrifuge 31 is operated at high speed to remove solid particles from the exhaust gas, reducing the purification burden on the subsequent exhaust gas purification component 4. The centrifuge 31 generates centrifugal force through high-speed rotation, separating the solid particles into the storage box 34 for automatic storage. In step S21, the centrifugally separated particulate impurities collected in the storage box 34 can be dried, sintered, and reduced to convert the separated manganese particles into manganese alloy or high-purity metallic manganese for recycling. The treated waste residue is solidified to form environmentally friendly bricks, or the organic waste residue is converted into building filling materials through high-temperature incineration, thereby further reducing environmental pollution.

[0051] S22, activated carbon adsorption: The exhaust gas after centrifugal treatment in the centrifuge 31 is transported into the exhaust gas purification component 4 through the connecting pipe to further remove harmful gases such as NO2 in the gas. Since the exhaust gas purification component 4 adopts a modular design, the staff can replace and maintain the activated carbon carrier box 42 according to actual needs. In step S22, a gas detection device is installed to monitor the concentration of pollutants in the exhaust gas such as manganese vapor, NO2, etc. in real time, and the data is transmitted to the control system. Then, according to the welding time recording device: for each welding operation during the welding process, the system automatically records the welding time t 焊接 , in order to calculate the filter element replacement cycle, the specific calculation formula is:

[0052]

[0053] According to the real-time gas concentration C 污染物 and welding time t 焊接 , calculate the filter element replacement cycle T 换芯 and prompt the operator to replace it through the control panel;

[0054] S23, Spray Neutralization: The waste gas filtered by the waste gas purification component 4 is automatically transported to the interior of the gas scrubber 5. At this time, the operation of the atomizing spray component 6 atomizes the NaOH solution through the nozzle to form tiny droplets, which quickly neutralize the acidic gases such as SO2 and HF in the waste gas at the gas-liquid interface, initially generating soluble salts such as Na2SO3 and NaF, reducing the acidity of the waste gas and effectively controlling the emission of acidic pollutants. However, since spraying is a dynamic gas-liquid reaction, there are problems such as short reaction time and uneven contact of droplets. Some acidic components that have not fully reacted will enter the subsequent waste liquid treatment stage;

[0055] S3. Waste liquid treatment:

[0056] S31, chemical reaction tank treatment: The waste liquid generated after multiple spraying is transported into the chemical reaction tank through the sewage pipe 11, and then a neutralizing agent such as sodium hydroxide (NaOH) is added for stirring to accelerate the reaction rate and remove acidic pollutants such as SO2 and HF in the waste liquid. The specific reaction is:

[0057] SO2+2NaOH→Na2SO3+H2O

[0058] HF+NaOH→NaF+H2O;

[0059] S32, ion exchange treatment: After the waste liquid is treated in the chemical reaction tank, it enters the ion exchange system to further remove metal ions such as manganese and iron in the waste liquid, ensuring that the liquid meets environmental emission standards and can be recycled. In step S32, the treated clean water can be re-prepared into NaOH solution after passing the online water quality monitoring system inspection and transported to the bottom of the partition plate 9, ensuring that the water resources in the spraying process can be recycled.

[0060] like Figure 1-Figure 5 As shown, a high manganese steel welding waste gas treatment device based on NaOH solution includes a waste gas treatment box 1, a delivery pipe 7 and a sewage pipe 11. An access door 2 is installed on the outside of the waste gas treatment box 1, and a centrifugal separation component 3 is fixedly installed on the inner surface of the upper end of the waste gas treatment box 1. The centrifugal separation component 3 includes a centrifugal separator 31, and a gas injection pipe 32 is fixedly installed on the top of the centrifugal separator 31. The bottom of the centrifugal separator 31 is fixedly connected to a threaded mounting seat 33, and a storage box 34 is movably installed on the bottom of the threaded mounting seat 33. At the same time, the top of the storage box 34 is fixed. The waste gas treatment box 1 is fixedly connected with an annular threaded mounting plate 35. The annular threaded mounting plate 35 is provided, so that the storage box 34 is convenient for the staff to quickly disassemble and assemble, thereby providing convenience for the staff to recover manganese metal later. The waste gas treatment box 1 is fixedly connected with an exhaust gas purification component 4 on the inner surface. The exhaust gas purification component 4 includes an exhaust gas purification chamber 41, and the inner surface of the exhaust gas purification chamber 41 is movably installed with an activated carbon carrier box 42, and the outer side of the activated carbon carrier box 42 is fixedly installed with a connecting seat 43, and the outer side of the connecting seat 43 is fixedly connected with a handle 44. By setting The connecting seat 43 and the handle 44 make it easy for the staff to quickly disassemble and assemble the activated carbon carrier box 42, and the end of the exhaust gas purification component 4 is fixedly installed with a gas washing bin 5, and the top of the gas washing bin 5 is installed with an atomizing spray component 6, which includes a hollow connecting plate 61, and the bottom of the hollow connecting plate 61 is equidistantly installed with atomizing nozzles 62 in an array, and the atomizing nozzles 62 are embedded in the interior of the gas washing bin 5, and the top of the hollow connecting plate 61 is symmetrically fixed with a fixing rod 63, and the hollow connecting plate 61 is connected to the fixing rod 63 through the fixing rod 63. The exhaust gas treatment box 1 constitutes a fixed structure. By setting the hollow connecting plate 61 and the exhaust gas treatment box 1 as a fixed structure, the hollow connecting plate 61 will not loosen when carrying the spray liquid. The delivery pipe 7 is fixedly installed on the top of the atomizing spray assembly 6, and the end of the delivery pipe 7 is fixedly connected to the water pump 8, and the inner side of the water pump 8 is fixedly connected to the outer side of the exhaust gas treatment box 1, and the inner surface of the exhaust gas treatment box 1 is fixedly installed with a partition plate 9, and the top of the partition plate 9 is symmetrically installed with a support column 10, and the sewage pipe 11 is fixedly installed on the side of the exhaust gas treatment box 1.

[0061] In summary, combined Figures 1-8As shown, the working principle of the high manganese steel welding waste gas treatment device and method based on NaOH solution is as follows: first, the worker wears a special composite welding protective breathing device to perform welding operations. At the same time, the gas injection pipe 32 transports the waste gas generated by welding into the interior of the centrifuge 31, and then the centrifuge 31 is turned on by the controller. When the centrifuge 31 starts to run, the waste gas is centrifugally separated. At this time, the particulate waste in the waste gas automatically enters the interior of the storage box 34 for collection and treatment, and the separated waste gas is transported to the interior of the waste gas purification bin 41 through the connecting pipe. At this time, the waste gas is purified by the activated carbon in the activated carbon carrier box 42, and then the purified waste gas is automatically transported to the interior of the gas washing bin 5;

[0062] Secondly, the staff turns on the water pump 8 through the controller, so that when the water pump 8 is running, it transports the NaOH solution in the exhaust gas treatment box 1 into the interior of the hollow connecting plate 61 through the delivery pipe 7, and then the exhaust gas transported into the washing bin 5 is scrubbed by the operation of the atomizing nozzle 62, and the generated wastewater flows back to the bottom of the partition plate 9 through the connecting pipe for collection and treatment. After the NaOH solution in the exhaust gas treatment box 1 has been scrubbed multiple times, the staff discharges the waste liquid into the chemical reaction tank through the sewage pipe 11 for subsequent waste liquid purification treatment;

[0063] Finally, the staff opens the inspection door 2, then grabs the storage box 34 and rotates it. At this time, the storage box 34 is quickly disassembled through the threads on the outer surface of the annular threaded mounting plate 35 and the threads on the inner surface of the threaded mounting seat 33. The staff then discards the particles collected in the storage box 34 through drying, sintering and reduction smelting processes, and converts the separated manganese particles into manganese alloy or high-purity metallic manganese for recycling. The treated waste residue is solidified to form environmentally friendly bricks, or the organic waste residue is converted into building filling materials through high-temperature incineration, so as to further reduce environmental pollution. The clean water after ion exchange treatment is re-prepared into NaOH solution after passing the inspection of the online water quality monitoring system and is transported to the bottom of the partition plate 9, so as to ensure that the water resources in the spraying process can be recycled.

[0064] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A method for treating high manganese steel welding waste gas based on NaOH solution, characterized in that: The high manganese steel welding waste gas treatment method based on NaOH solution comprises the following steps: S1. Waste gas collection: workers wear a special composite welding protective device to perform welding operations. The protective device integrates a HEPA high-efficiency particle filter layer and a high-performance activated carbon adsorption layer to effectively capture manganese vapor nanoparticles, CO gas and NO2 gas released during the welding process. The HEPA high-efficiency particle filter layer targets metal vapor particles, and the high-performance activated carbon adsorption layer is used for gas adsorption, thereby ensuring the safety of workers inhaling gas. The protective device adopts a multi-layer filter material structure design with the characteristics of high flux, low resistance and high adsorption efficiency. At the same time, the gas injection pipe (32) transports the waste gas generated during the welding process into the interior of the centrifuge (31); S2. Machine dust removal: S21, centrifugal separation: The centrifuge (31) is operated at high speed to remove solid particles in the exhaust gas, thereby reducing the purification burden on the subsequent exhaust gas purification component (4). The centrifuge (31) generates centrifugal force through high-speed rotation, and separates the solid particles into a storage box (34) for automatic storage. S22, activated carbon adsorption: The exhaust gas after centrifugal treatment in the centrifuge (31) is transported into the exhaust gas purification component (4) through a connecting pipe to further remove harmful gases in the gas. Since the exhaust gas purification component (4) adopts a modular design, the staff can replace and maintain the activated carbon carrier box (42) according to actual needs; S23, spray neutralization: The waste gas filtered in the waste gas purification component (4) is automatically transported to the interior of the gas washing chamber (5). At this time, the NaOH solution is atomized through the nozzle by the operation of the atomizing spray component (6) to form tiny droplets, which quickly react with SO2 and HF in the waste gas at the gas-liquid interface to initially generate soluble salts Na2SO3 and NaF, thereby reducing the acidity of the waste gas and effectively controlling the emission of acidic pollutants; S3. Waste liquid treatment: S31. Chemical reaction tank treatment: To ensure that the unreacted SO2 and HF in the spraying process are completely neutralized, the spray waste liquid flows into the chemical reaction tank through the sewage pipe (11). NaOH neutralizer is added again under stirring to extend the reaction time, improve the completeness of the reaction, ensure that the pH value of the waste liquid meets the standard, and effectively remove residual acidic pollutants. The specific reaction is: SO2+2NaOH→Na2SO3+H2O HF+NaOH→NaF+H2O; S32. Ion exchange treatment: After the waste liquid is treated in the chemical reaction tank, it enters the ion exchange system to further remove the metal ions in the waste liquid, ensuring that the liquid meets environmental emission standards and can be recycled.

2. The method for treating high manganese steel welding waste gas based on NaOH solution according to claim 1, characterized in that: In step S21, the granular impurities separated by centrifugation collected by the storage box (34) are dried, sintered and reduced to convert the separated manganese particles into manganese alloy or high-purity metallic manganese for recycling, and the treated waste residue is solidified to form environmentally friendly bricks, or the organic waste residue is converted into building filling materials through high-temperature incineration.

3. The method for treating high manganese steel welding waste gas based on NaOH solution according to claim 2, characterized in that: In step S32, the treated clean water is re-prepared into NaOH solution after being tested and found to be qualified by the online water quality monitoring system.

4. A high manganese steel welding waste gas treatment device based on NaOH solution, applied to the high manganese steel welding waste gas treatment method based on NaOH solution as described in any one of claims 1 to 3, comprising a waste gas treatment box (1), a delivery pipe (7) and a sewage pipe (11), characterized in that: The outside of the waste gas treatment box (1) is provided with an inspection door (2), and the inner surface of the upper end of the waste gas treatment box (1) is fixedly provided with a centrifugal separation component (3), and the inner surface of the waste gas treatment box (1) is fixedly connected with a waste gas purification component (4), and the end of the waste gas purification component (4) is fixedly provided with a gas washing bin (5), and the top of the gas washing bin (5) is provided with an atomizing spray component (6), the delivery pipe (7) is fixedly provided with the top of the atomizing spray component (6), and the end of the delivery pipe (7) is fixedly provided with a water pump (8), and the inner side of the water pump (8) is fixedly provided with the outer side of the waste gas treatment box (1), and the inner surface of the waste gas treatment box (1) is fixedly provided with a partition plate (9), and the top of the partition plate (9) is symmetrically provided with a support column (10), and the sewage pipe (11) is fixedly provided with the side of the waste gas treatment box (1).

5. The high manganese steel welding waste gas treatment device based on NaOH solution according to claim 4 is characterized in that: The centrifugal separation assembly (3) comprises a centrifugal separator (31), wherein an air injection pipe (32) is fixedly mounted on the top of the centrifugal separator (31), and a threaded mounting seat (33) is fixedly connected to the bottom of the centrifugal separator (31), and a storage box (34) is movably mounted on the bottom of the threaded mounting seat (33), and an annular threaded mounting plate (35) is fixedly connected to the top of the storage box (34).

6. The high manganese steel welding waste gas treatment device based on NaOH solution according to claim 5, characterized in that: The exhaust gas purification component (4) includes an exhaust gas purification chamber (41), and an activated carbon carrier box (42) is movably installed on the inner surface of the exhaust gas purification chamber (41), and a connecting seat (43) is fixedly installed on the outer side of the activated carbon carrier box (42), and a handle (44) is fixedly connected to the outer side of the connecting seat (43).

7. The high manganese steel welding waste gas treatment device based on NaOH solution according to claim 6, characterized in that: The atomizing spray assembly (6) comprises a hollow connecting plate (61), and atomizing nozzles (62) are installed in an array at equal distances on the bottom of the hollow connecting plate (61), and the atomizing nozzles (62) are embedded in the interior of the gas washing bin (5). In addition, a fixing rod (63) is symmetrically fixed on the top of the hollow connecting plate (61), and the hollow connecting plate (61) forms a fixed structure with the exhaust gas treatment box (1) through the fixing rod (63).

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