A device for online purification of tinning waste gas based on tinned stranded wire production

Abstract

The present application relates to exhaust gas purification treatment technical field, disclose a kind of based on tinned stranded wire production's tinning exhaust gas online purification treatment device, including spray tower, the spray processing device being arranged in spray tower, the gas inlet pipe being arranged in the side of spray tower, further include the mixing mechanism being arranged in gas inlet pipe;Mixing mechanism includes the mixing unit being arranged in gas inlet pipe, and the mixing intensifier unit for intensifying mixing effect being arranged in mixing unit;Mixing unit includes the mixing pipe being arranged in gas inlet pipe, the flow guide block being arranged in mixing pipe.By the way of combination of two-way flow guide and rotating turbulence, the airflow stratification phenomenon that center flow speed is fast in gas inlet pipe, side wall flow speed is slow can be effectively broken, make tin-containing smoke, oil mist and organic volatile waste gas uniform mixing, avoid pollutant local aggregation and airflow short circuit, provide stable uniform inlet condition for subsequent spray purification, significantly improve gas-liquid contact fullness, ensure pollutant removal effect.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification and treatment technology, and in particular to an online purification and treatment device for tin-plated waste gas produced from tin-plated stranded wire. Background Technology

[0002] During the production of tin-plated stranded wire, industrial waste gas containing tin-based fumes, oil mist, and volatile organic compounds is continuously generated. Direct emission of this waste gas would cause environmental pollution, so it must undergo online purification treatment to meet emission standards. Current technologies primarily employ spray tower treatment processes for purifying this type of tin-plating waste gas. The core of this process involves introducing the waste gas into the spray tower through an inlet pipe, where the atomized spray liquid from the spray device comes into full contact with the waste gas, achieving adsorption of tin-based fumes, emulsification of oil mist, and absorption of volatile organic compounds, thereby removing pollutants.

[0003] However, in actual industrial applications, a significant stratification phenomenon is commonly observed when exhaust gas flows within the inlet pipe, with a high central airflow velocity and a slow peripheral airflow velocity. This phenomenon is mainly influenced by the combined effects of fluid viscosity and the flow characteristics within the pipe. Specifically, as the gas flows through the inlet pipe, the airflow close to the inner wall experiences viscous friction due to the viscous force of the pipe wall, resulting in continuous energy consumption and a significant decrease in velocity, forming a low-velocity, wall-adhering airflow layer. In contrast, the airflow in the central region of the inlet pipe is not directly affected by the viscous force of the pipe wall and can maintain a high flow velocity under the drive of the intake pressure difference, forming a high-speed core airflow zone. Furthermore, tin plating exhaust gas contains pollutant particles and oil droplets of different densities and sizes. The presence of these substances further exacerbates the airflow stratification effect, leading to uneven distribution of pollutants in the exhaust gas, with some areas exhibiting excessively high pollutant concentrations while others suffer from airflow short-circuiting issues. Meanwhile, traditional devices lack adaptive adjustment capabilities, cannot adjust the mixing effect according to changes in exhaust gas flow and pressure, and are prone to pollutant deposition and scaling on the pipe walls, which not only affects purification efficiency but also increases equipment wear and maintenance costs.

[0004] The aforementioned airflow stratification phenomenon can lead to a series of drawbacks, seriously affecting the purification effect of tin plating waste gas and the long-term stable operation of the treatment device, resulting in incomplete removal of pollutants, low purification efficiency, and difficulty in meeting environmental emission standards. Therefore, it is urgent to develop a technical solution that can effectively solve the airflow stratification problem in the inlet pipe, so as to improve the stability and efficiency of tin plating waste gas purification treatment. Summary of the Invention

[0005] In view of the problems of existing technology, such as airflow stratification in the intake pipe, high flow velocity in the center and slow flow velocity on the side wall, uneven distribution of pollutants, easy airflow short circuit, lack of adaptive adjustment capability, easy scaling and blockage on the pipe wall, insufficient gas-liquid contact, low purification efficiency and unstable operation, an online purification and treatment device for tin-plated waste gas based on tin-plated stranded wire production is proposed.

[0006] Its purpose is to: break the airflow stratification phenomenon in the pipeline, achieve uniform mixing of tin-based fumes, oil mist and volatile organic compounds, improve the contact effect between waste gas and spray liquid, and improve purification efficiency; at the same time, reduce the risk of equipment scouring, scaling and blockage, achieve adaptive operating condition adjustment, and enable the device to stably, continuously and with low energy consumption meet the online purification needs of tin-plated stranded wire production line waste gas, and ensure that emissions meet standards.

[0007] The technical solution of the present invention is an online purification and treatment device for tin-plated waste gas produced based on tin-plated stranded wire production, including a spray tower, a spray treatment device installed in the spray tower, an air inlet pipe installed on one side of the spray tower, and a mixing mechanism installed in the air inlet pipe. The mixing mechanism includes a mixing unit disposed in the intake pipe, and a mixing enhancement unit disposed in the mixing unit for enhancing the mixing effect; The mixing unit includes a mixing pipe disposed in the intake pipe, a guide block disposed in the mixing pipe, guide vanes arranged in a ring array around the guide block, and a plurality of mixing plates arranged in a ring array inside the mixing pipe on the side away from the guide block.

[0008] Furthermore, both ends of the guide block are pointed, and the guide vanes and the mixing plate twist in opposite directions.

[0009] Furthermore, the guide vanes extend spirally outward along the radial direction of the guide block, making the virtual circle at the edge of the guide vanes gradually larger, and the mixing plate extends spirally in the radial direction of the mixing tube toward its axis, making the virtual circle at the edge of the mixing plate gradually larger.

[0010] Furthermore, both the guide vane and the mixing plate extend beyond half the virtual circle position of the mixing plate, meaning that the guide vane and the mixing plate overlap on the radial surface of the mixing pipe.

[0011] Furthermore, the mixing plate is flat and is disposed at the inner end of the mixing tube.

[0012] Furthermore, the mixing enhancement unit includes a drive rod disposed on the periphery of the guide block, a cavity opened inside the mixing tube, a spring disposed in the cavity, a compression ring disposed on one side of the spring, the drive rod and the compression ring being fixedly connected, the compression ring being slidably connected in the cavity, a limiting hole opened on one side of the cavity, and one end of the drive rod passing through the limiting hole and being slidably connected therein.

[0013] Furthermore, the inner wall of the mixing tube is also provided with a ring-shaped array of turbulence strips.

[0014] Furthermore, the spoiler strip is provided with a groove, one side of which is pointed and the other side is a raised shape with an increased slope.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention effectively breaks the airflow stratification phenomenon of high central velocity and slow sidewall velocity in the air intake pipe by combining bidirectional flow guidance and rotating turbulence. This allows the exhaust gas containing tin-based dust, oil mist and volatile organic compounds to be uniformly mixed, avoiding local accumulation of pollutants and short-circuiting of airflow. It provides stable and uniform air intake conditions for subsequent spray purification, significantly improves the gas-liquid contact, and ensures the pollutant removal effect.

[0016] 2. By adopting reverse spiral blades, radial overlapping structure and adaptive mixing enhancement unit, the disturbance intensity can be automatically adjusted according to the exhaust gas pressure and flow rate. It can achieve strong shear turbulence under different operating conditions, so that pollutant particles of different densities and sizes are fully dispersed, eliminating purification blind spots, and greatly improving the comprehensive purification efficiency of tin dust, oil mist and volatile organic compounds, ensuring stable emission compliance.

[0017] 3. The entire mixing mechanism is driven by the kinetic energy of the exhaust gas itself, without the need for external power. It has a simple structure, reliable operation, and lower energy consumption. At the same time, the uniform airflow can reduce local scouring, reduce the deposition and scaling of tin dust and oil mist on the pipe walls and inside the tower, reduce the risk of pipeline blockage and equipment corrosion, extend the service life of the device, and can meet the continuous and stable online purification needs of tin-plated stranded wire production lines for a long time. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the overall spray tower of the present invention; Figure 2 This is a schematic diagram of the overall structure of the intake pipe of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the overall internal structure of the mixing tube of the present invention; Figure 5 This is a schematic diagram of the overall front view of the end face of the mixing tube of the present invention; Figure 6 This is a schematic diagram of the separation structure of the guide vane and the mixing plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the hybrid reinforcement unit of the present invention; Figure 8 This is a schematic diagram of the overall structure of the guide vane and guide block of the present invention; Figure 9 This is a three-dimensional structural diagram of the spoiler strip of the present invention; Figure 10 This is a schematic diagram showing the flow direction of the exhaust gas in the mixing pipe according to the present invention.

[0019] In the picture: 1. Spray tower; 2. Air inlet pipe; 3. Mixing unit; 31. Mixing pipe; 32. Guide block; 33. Guide vane; 34. Mixing plate; 4. Mixing enhancement unit; 41. Drive rod; 42. Cavity; 43. Spring; 44. Extrusion ring; 45. Limiting hole; 5. Baffle strip; 6. Groove. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1, referring to Figures 1-10 This is the first embodiment of the present invention, which provides an online purification and treatment device for tin-plated waste gas produced by tin-plated stranded wire production. The device includes a spray tower 1, a spray treatment device (which is a prior art device with multiple spray layers and spray nozzles, and the spray liquid is atomized and sprayed from top to bottom, with a packing layer or swirl plate inside the tower to enhance gas-liquid contact, and a circulating pump and a circulating water tank for recycling of the spray liquid) fixedly connected to one side of the spray tower 1, and a mixing mechanism installed in the air inlet pipe 2. The mixing mechanism includes a mixing unit 3 installed in the air inlet pipe 2, and a mixing enhancement unit 4 installed in the mixing unit 3 to enhance the mixing effect. The mixing unit 3 includes a mixing pipe 31 rotatably connected to the air inlet pipe 2, a guide block 32 installed in the mixing pipe 31 through the mixing enhancement unit 3, a guide vane 33 fixedly connected in an annular array around the guide block 32, and a plurality of mixing plates 34 fixedly connected in an annular array inside the mixing pipe 31 on the side away from the guide block 32.

[0022] Specifically, during waste gas treatment, the production waste gas containing tin-based dust, oil mist, and volatile organic compounds enters the spray tower 1 through the inlet pipe 2. As the different substances in the waste gas flow through the mixing mechanism in the inlet pipe 2, they are subjected to the synergistic effect of the mixing unit 3 and the mixing enhancement unit 4, achieving thorough mixing and turbulence. The high-speed flowing waste gas impacts the guide vanes 33, causing the guide block 32 and the mixing pipe 31 to rotate synchronously and at a limited distance. The guide vanes 33 guide the waste gas, which was originally concentrated in the center of the inlet pipe 2 and had a relatively high flow rate. The air is guided and diffused towards the side wall of the intake pipe 2. At the same time, the mixing plate 34 in the mixing pipe 31 guides and disturbs the exhaust gas with a slower flow rate near the side wall, guiding it towards the center of the intake pipe 2. This allows the exhaust gas containing tin-based dust, oil mist, and volatile organic compounds, which was originally distributed in layers and mixed unevenly, to be fully mixed under the action of rotational turbulence and bidirectional guidance, forming a uniform airflow mixture. This effectively avoids the problem of local accumulation of tin-based dust due to airflow stratification and the problem of oil mist not being able to fully contact the spray liquid due to uneven flow rate.

[0023] When the concentration of pollutants in the exhaust gas increases and the inlet pressure increases, the mixing enhancement unit 4 adaptively starts, pushing the guide block 32 and guide vanes 33 to move towards the mixing plate 34, reducing the distance between the guide vanes 33 and the mixing plate 34, further enhancing the airflow shear disturbance effect, and ensuring that pollutants of different densities and particle sizes (tin-based dust particles, oil mist droplets, and volatile organic compound molecules) are uniformly dispersed in the airflow. Subsequently, the fully mixed exhaust gas enters the interior of the spray tower 1, forming a counter-current contact with the spray liquid atomized and sprayed from top to bottom by the spray treatment device. Under the action of the packing layer or swirl plate, the gas-liquid contact area and contact time are greatly increased.

[0024] This bidirectional guided mixing method enables the waste gas containing tin-based dust, oil mist, and volatile organic compounds, which was originally layered and unevenly mixed, to be fully mixed into a uniform airflow mixture. Firstly, it effectively avoids the problems of localized accumulation of tin-based dust due to airflow stratification and insufficient contact of oil mist with the spray liquid due to uneven flow velocity, laying the foundation for subsequent spray purification. Secondly, it ensures that pollutants of different densities and particle sizes (tin-based dust particles, oil mist droplets, and volatile organic compound molecules) are evenly dispersed in the airflow, ensuring no dead zones during subsequent contact with the spray liquid and improving purification efficiency. Thirdly, it requires no external power, relying on the impact force of the waste gas itself to achieve bidirectional flow mixing, resulting in a simple structure, low energy consumption, and suitability for continuous online treatment of tin plating waste gas. In addition, it reduces localized scouring and pollutant deposition caused by airflow stratification, lowers the risk of scaling and blockage inside the inlet pipe 2 and spray tower 1, and extends the service life of the device.

[0025] Reference Figures 4-6 Both ends of the guide block 32 are pointed, and the guide vanes 33 and the mixing plate 34 are twisted in opposite directions.

[0026] Specifically, the guide block 32 is pointed at both ends, which can significantly reduce the resistance to exhaust gas flow, guide the airflow smoothly, reduce the formation of vortex dead zones, and effectively reduce the probability of tin-based dust and oil mist adhering to, accumulating, and forming scale at the ends of the guide block 32. The guide vanes 33 and the mixing plate 34 twist in opposite directions, which can form turbulent airflow with opposite directions of rotation in the intake pipe 2. On the one hand, it diffuses the high-speed airflow in the center to the periphery, and on the other hand, it converges the low-speed airflow on the side wall to the center, realizing the counter-shearing and forced turbulence of the internal and external airflows.

[0027] Reference Figure 5 , Figure 6 and Figure 8 The guide vane 33 extends spirally outward along the radial direction of the guide block 32, making the virtual circle where the edge of the guide vane 33 is located gradually larger, and the mixing plate 34 extends spirally in the radial direction of the mixing tube 31 toward its axis, making the virtual circle where the edge of the mixing plate 34 is located gradually larger.

[0028] Specifically, the guide vane 33 extends radially outward from the guide block 32 in a spiral manner, and the virtual circle at its edge gradually expands, which can form a progressive outward expansion and guidance of the central airflow, smoothly guiding the high-speed central airflow toward the pipe wall and avoiding the impact and eddies caused by sudden changes in airflow; the mixing plate 34 extends spirally toward the axis of the mixing pipe 31 in a spiral manner, and the virtual circle at its edge gradually expands, which can form a progressive inward convergence and guidance of the low-speed airflow on the pipe wall, gently pulling the sidewall airflow toward the central region.

[0029] Reference Figure 5 Both the guide vane 33 and the mixing plate 34 extend beyond the half-circle position of the mixing plate 34, meaning that the guide vane 33 and the mixing plate 34 overlap on the radial surface of the mixing pipe 31.

[0030] Specifically, the airflow passing through the guide vane 33 is divided into two streams. One part continues to flow forward along the middle, while the other part is guided by the guide vane 33 to the periphery, where it mixes with the sidewall airflow. At the same time, the high-speed airflow in the middle creates a suction effect on the periphery airflow, further enhancing the overall mixing effect. Both the guide vane 33 and the mixing plate 34 extend beyond half the radius of their respective virtual circles, forming a radially overlapping area on the radial section of the mixing pipe 31. In this area, the airflow is forced to converge, squeeze, and shear, significantly increasing the intensity of turbulence. This effectively breaks the stratification phenomenon where the central airflow is fast and the sidewall airflow is slow in the inlet pipe 2, ensuring uniform mixing of the exhaust gas containing tin-based dust, oil mist, and volatile organic compounds. This avoids excessively high local concentrations or airflow short-circuiting, ensuring full contact with the spray liquid after entering the spray tower 1, and improving purification efficiency. Turbulent mixing is achieved by relying on the kinetic energy of the exhaust gas itself, requiring no additional power. The structure is simple and the operation is reliable. At the same time, uniform airflow can reduce local scouring and pollutant deposition, reduce the risk of pipe scaling and blockage, and extend the service life of the device.

[0031] Reference Figure 6 The mixing plate 34 is flat and is disposed at the inner end of the mixing tube 31.

[0032] Specifically, this setup can perform final regulation and disturbance of the airflow after the initial guidance without significantly increasing wind resistance, preventing the airflow from stratifying again or escaping directly from the periphery, thus improving the mixing effect.

[0033] Example 2, refer to Figure 4 and Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the mixing enhancement unit 4 includes a drive rod 41 fixedly connected to the periphery of the guide block 32, a cavity 42 opened inside the mixing tube 31, a spring 43 abutting inside the cavity 42, a compression ring 44 abutting one side of the spring 43, the drive rod 41 and the compression ring 44 fixedly connected, the compression ring 44 slidingly connected inside the cavity 42, and a limiting hole 45 opened on one side of the cavity 42. One end of the drive rod 41 passes through the limiting hole 45 and slides within it.

[0034] Specifically, when the exhaust gas flows through the guide vane 33, it generates axial thrust, which pushes the guide block 32 and the drive rod 41 to move synchronously. The drive rod 41 drives the compression ring 44 to compress the spring 43 in the cavity 42, causing the guide vane 33 to generate an adaptive axial displacement towards the mixing plate 34. When the intake pressure decreases, the spring 43 rebounds and resets, driving the guide vane 33 back to its initial position. The distance between the guide vane 33 and the mixing plate 34 can be automatically adjusted according to the exhaust gas impact pressure. The greater the intake gas velocity, the smaller the distance between the two, the stronger the airflow shear disturbance, and the stronger the mixing effect adaptively according to the operating conditions. With the reverse twisting setting and overlapping arrangement of the guide vane 33 and the mixing plate 34, the convergence and mixing of the central airflow and the peripheral airflow are further enhanced, avoiding stratification and short circuit. It is a purely mechanical structure without external power, relying on the thrust of the exhaust gas itself to achieve operation. It is stable and reliable in operation and not prone to failure.

[0035] Reference Figures 4-5 and Figure 7 The inner wall of the mixing tube 31 is also fixedly connected with a ring array of turbulence strips 5.

[0036] Specifically, the turbulence strips 5 arranged in an annular array on the inner wall of the mixing tube 31 can further cut and break up the airflow that is guided to the periphery by the guide vanes 33, weakening the laminar flow phenomenon along the wall. Combined with the mixing plate 34 that twists in the opposite direction, the airflow on the side wall can converge more smoothly to the center, further enhancing the degree of turbulent mixing of the internal and external airflows.

[0037] Reference Figure 9 The spoiler strip 5 is provided with a groove 6, one side of which is pointed and the other side is a raised shape with an increased slope.

[0038] Specifically, one side of the deflector 5 is pointed, which allows it to smoothly cut into the airflow, reduce intake resistance, and prevent airflow from impacting and generating eddies; the other side is a convex shape with a gradually increasing slope, which, together with the surface groove 6, can gradually pressurize and guide the airflow adhering to the wall and form local turbulence. The groove 6 can further break up and disturb the oil mist and tin dust particles in the airflow, preventing the particles from adhering to the wall. The rest of the structure is the same as that in Embodiment 1.

[0039] Based on embodiments 1-2, the working principle of this invention is as follows: Tin-plating waste gas containing tin-based dust, oil mist, and volatile organic compounds enters the device through the inlet pipe 2. The airflow impacts the guide vanes 33, causing the guide blocks 32 and mixing pipe 31 to rotate synchronously. The guide blocks 32, with their pointed ends, smoothly divide the airflow, reducing resistance and fouling. The guide vanes 33 and mixing plate 34 are arranged in opposite spirals, and their radial extensions form an overlapping area. The guide vanes 33 diffuse the high-speed airflow from the center to the periphery, while the mixing plate 34 converges the low-speed airflow from the sidewalls to the center. The two airflows are forcibly sheared, compressed, and turbulent in the overlapping area. The central airflow simultaneously entrains the peripheral airflow, completely eliminating the stratification problem of high central velocity and slow sidewall velocity. The turbulence strips 5 on the inner wall of the mixing pipe 31, combined with the grooves 6 and gradually raised structures, further break up the laminar flow adhering to the wall and disturb particles, preventing pollutants from adhering to the pipe wall.

[0040] When the intake pressure increases, the axial thrust of the exhaust gas on the guide vane 33 pushes the guide block 32, drive rod 41, and compression ring 44 to compress the spring 43, causing the guide vane 33 to adaptively move closer to the mixing plate 34, reducing the spacing to enhance turbulence; when the pressure decreases, the spring 43 returns to its original position, achieving automatic adjustment according to the operating conditions. The flat mixing plate 34 performs final regulation of the airflow at the end of the pipeline, preventing the airflow from stratifying again or escaping through short circuits.

[0041] The thoroughly mixed exhaust gas enters spray tower 1 and comes into counter-current contact with the atomized spray liquid flowing downwards. The gas-liquid contact efficiency is significantly improved by the packing material or swirl plates. Tin dust is adsorbed and condensed, oil mist is emulsified and separated, and volatile organic compounds are absorbed and dissolved. The purified gas is then discharged, and the spray liquid is recycled. The entire system relies on the exhaust gas's own kinetic energy to achieve rotational turbulence and adaptive enhanced mixing, requiring no external power source. Its simple and reliable structure not only improves the exhaust gas purification effect but also reduces localized scouring and scaling, extending equipment lifespan. It is suitable for continuous online purification operations in tin-plated wire production lines.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An online purification and treatment device for tin-plated waste gas produced from tin-plated stranded wire, comprising a spray tower (1), a spray treatment device disposed within the spray tower (1), and an air inlet pipe (2) disposed on one side of the spray tower (1), characterized in that, It also includes a mixing mechanism installed in the intake pipe (2); The mixing mechanism includes a mixing unit (3) disposed in the air intake pipe (2) and a mixing enhancement unit (4) disposed in the mixing unit (3) for enhancing the mixing effect. The mixing unit (3) includes a mixing pipe (31) disposed in the air intake pipe (2), a guide block (32) disposed in the mixing pipe (31), a guide vane (33) arranged in a ring array around the guide block (32), and a plurality of mixing plates (34) arranged in a ring array on the side of the mixing pipe (31) away from the guide block (32). Both ends of the guide block (32) are pointed, and the guide vanes (33) and the mixing plate (34) have opposite twisting directions; The mixing enhancement unit (4) includes a drive rod (41) disposed on the periphery of the guide block (32), a cavity (42) opened inside the mixing tube (31), a spring (43) disposed in the cavity (42), a compression ring (44) disposed on one side of the spring (43), the drive rod (41) and the compression ring (44) being fixedly connected, the compression ring (44) being slidably connected in the cavity (42), a limiting hole (45) opened on one side of the cavity (42), and one end of the drive rod (41) passing through the limiting hole (45) and being slidably connected in it; The inner wall of the mixing tube (31) is also provided with a ring array of baffle strips (5); The spoiler strip (5) is provided with a groove (6), one side of which is pointed and the other side is a raised shape with an increased slope.

2. The online purification and treatment device for tin-plating waste gas based on tin-plated stranded wire production according to claim 1, characterized in that: The guide vane (33) extends radially outward along the guide block (32), making the virtual circle at the edge of the guide vane (33) gradually larger, and the mixing plate (34) extends radially along the mixing tube (31) toward its axis, making the virtual circle at the edge of the mixing plate (34) gradually larger.

3. The online purification and treatment device for tin-plating waste gas based on tin-plated stranded wire production according to claim 1, characterized in that: The guide vane (33) and the mixing plate (34) are both located beyond half the virtual circle position of the mixing plate (34), that is, the guide vane (33) and the mixing plate (34) have an overlapping part on the radial surface of the mixing tube (31).

4. The online purification and treatment device for tin-plated waste gas based on tin-plated stranded wire production according to claim 1, characterized in that: The mixing plate (34) is flat and is disposed at the inner end of the mixing tube (31).

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