Device and system for reducing tin liquor pollution and working method of system
By using a paper-shaped pipeline device equipped with an H2 catalytic layer in the production of float glass, the trace oxygen in the tin tank is captured, and the problem of tin liquid pollution is solved and the quality and yield of the glass is improved.
Patent Information
- Application Number
- CN202510490886.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2025-06-17
AI Technical Summary
In the existing floating glass production technology, tin liquid is easily contaminated by oxidation, resulting in a decrease in the quality of the glass. It is difficult for the existing technology to effectively capture trace oxygen, resulting in the contamination of tin liquid.
A device is designed to reduce tin liquid pollution, using a paper pipe as the main body, equipped with air inlets and multiple exhaust holes, using hydrogen to flow in the paper pipe, and capturing trace oxygen in the tin tank through the H2 catalytic layer.
Through this device, trace oxygen in the tin tank can be effectively captured, the risk of oxidative pollution of the tin liquid can be reduced, and the quality and yield of the glass can be improved.
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Figure CN120157323A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of float glass production, and particularly relates to a device and system for reducing tin bath pollution and a working method of the system. Background Art
[0002] The float glass production technology is a production technology that forms molten glass by means of a tin bath, and then successively passes through processes such as annealing and cutting, and finally makes glass. In the forming stage of float glass, the glass liquid floats on the tin bath, and undergoes a series of processes such as cooling, flattening, polishing, and thinning or thickening, and finally forms a glass plate with a specific thickness. The forming temperature of this process is in the range of 600 - 1050°C. In this process, the tin bath and the glass liquid neither wet each other nor chemically react. However, at high temperatures, tin is easily oxidized by pollutants such as oxygen and sulfur to form tin oxides and sulfides; at this time, the wetting angle between the glass and the tin oxides and sulfides increases, resulting in an aggravation of the tin penetration phenomenon on the lower surface of the glass, and at the same time, various tin defects such as tin spots, cassiterite, tin ash, falling objects, optical variation points, and tin dots are generated on the upper and lower surfaces of the glass, which has a very serious negative impact on the quality and output of the glass.
[0003] The tin bath, as a key container for carrying the tin bath, its main function is to be sealed, so as to prevent the tin bath from being polluted by blocking the entry of external air. In the existing float glass production technology, in addition to ensuring good sealing performance of the tin bath, it is also possible to prevent tin oxidation by filling a protective gas (such as , ) into the tin bath. Among them, plays a core role in maintaining the bath pressure of the tin bath, and fundamentally prevents external air from entering the tin bath; while acts to chemically react with trace amounts of oxygen, sulfur and other substances that enter the tin bath through gaps and the inlet and outlet of the tin bath to prevent the tin bath from being oxidized, so as to achieve the purpose of protecting the tin bath from being oxidized and polluted.
[0004] Although the existing technology has reduced the pollution of the tin bath to a certain extent, there are still some problems. First, the current technology mainly relies on filling a sufficient amount of protective gas into the tin bath to protect the tin bath. However, its actual effect is significantly affected by many factors such as the concentration, distribution and flow rate of the protective gas. If these parameters are set unreasonably, it is impossible to effectively prevent external air from entering the tin bath, and it is also difficult to discharge pollutants such as tin oxides and sulfides, resulting in certain defects in the produced glass. Second, even if measures such as strengthening the sealing of the tin bath and reasonably distributing the protective gas are taken, at the inlet and outlet of the tin bath and gaps, especially during actual operation, the infiltration of trace amounts of oxygen is still inevitable, and the existing technology mainly relies on for The capture effect, but due to various factors, there are still some trace oxygen that cannot be completely and accurately captured. These uncaptured trace oxygen is likely to contaminate the tin bath and reduce the quality of the glass. Therefore, in order to further reduce the probability of tin contamination, it is necessary to further enhance the capture of in the glass float process. Summary of the Invention
[0005] In view of this, the purpose of this application is to provide a device and system for reducing tin bath contamination and a working method of the system, which are used to solve the problem of easy residual trace oxygen in the existing glass float process.
[0006] To achieve the above technical purpose, this application provides a device for reducing tin bath contamination:
[0007] The main body of the device is a return pipe, and the shape and length of the return pipe can be adjusted to adapt to the external environment;
[0008] An air inlet and a plurality of exhaust holes are provided on the return pipe. The air inlet is used to introduce H2, and the exhaust holes are used to discharge H2; an H2 catalytic layer is also provided on the outer wall of the return pipe, and the H2 catalytic layer is used to provide a catalytic effect to assist H2 in capturing O2.
[0009] Furthermore, a plurality of flow-increasing pipes are provided on the return pipe. The flow-increasing pipes are connected to the pipe wall of the return pipe, and a plurality of exhaust holes are provided on the flow-increasing pipes.
[0010] Furthermore, the flow-increasing pipes include one or more of a straight pipe, an S-shaped pipe, and a cross-shaped pipe.
[0011] Furthermore, the flow-increasing pipes are arranged in an equidistant distribution and / or a matrix distribution.
[0012] Furthermore, the exhaust holes are arranged in an equidistant distribution, and the exhaust holes on any adjacent return pipe and / or flow-increasing pipe are arranged in a staggered manner.
[0013] Furthermore, the cross-sections of the return pipe and the flow-increasing pipes are polygons, and the exhaust holes are provided on a plurality of consecutive sides of the return pipe and the flow-increasing pipes, and the exhaust holes on adjacent sides are arranged in a staggered manner.
[0014] Furthermore, the H2 catalytic layer includes one or more of a palladium catalyst, a platinum catalyst, and a nickel catalyst.
[0015] Furthermore, the thickness of the H2 catalytic layer is 0.1 - 0.5 mm.
[0016] This application provides a system for reducing tin bath contamination, including a tin bath and a device for reducing tin bath contamination;
[0017] The tin bath is a sealed space with an operation window, and the bottom of the tin bath is used to hold molten tin; a mixed protective gas containing nitrogen and hydrogen is also filled inside the tin bath to prevent the molten tin from being oxidized and polluted;
[0018] The device for reducing the pollution of molten tin is placed above the molten tin inside the tin bath and is arranged parallel to the molten tin surface; the length and shape of the return pipe are adapted to the outer edge of the molten tin, and the side of the return pipe with exhaust holes is arranged close to the molten tin surface.
[0019] The present application provides a working method for a system for reducing the pollution of molten tin, including the following steps:
[0020] Adjust the vertical distance between the device for reducing the pollution of molten tin and the molten tin surface through the operation window, and then input H2 from the air inlet of the device for reducing the pollution of molten tin. H2 is transported along the return pipe and discharged through the exhaust holes;
[0021] During this process, H2 is input from the air inlet, transported along the return pipe, and discharged through the exhaust holes. Under the catalytic action of the H2 catalytic layer, H2 effectively captures trace amounts of O2 to prevent the pollution of molten tin.
[0022] In summary, the present application provides a device for reducing the pollution of molten tin. The main body of the device is a return pipe, whose shape and length are adjustable and can be adaptively adjusted according to different external environmental conditions. The return pipe is provided with an air inlet and exhaust holes. Hydrogen enters from the air inlet, passes through the return pipe, and is discharged through the exhaust holes, reacting with the oxygen in the tin bath; and the outer wall of the return pipe is coated with an H2 catalytic layer, which can accelerate the reaction process of H2 and O2 and efficiently capture trace oxygen in the tin bath. The device can quickly capture trace oxygen in the tin bath by transporting H2 in the edge area of the tin bath and making it chemically react with the trace oxygen in the tin bath under the catalytic action of the H2 catalytic layer, thereby reducing the possibility of the molten tin being oxidized and polluted.
[0023] In addition, the present application also provides a system for reducing the pollution of molten tin and a working method. The system includes a tin bath and a device for reducing the pollution of molten tin; the device for reducing the pollution of molten tin is placed parallel above the molten tin inside the tin bath, and the structure of the return pipe is adjusted to be precisely adapted to the edge of the tin bath. At the same time, ensure that the side with exhaust holes is close to the surface of the molten tin. During the operation of the system, by adjusting the height between the device for reducing the pollution of molten tin and the molten tin and the H2 transmission rate, the trace oxygen remaining on the surface and edge of the molten tin can be captured to the greatest extent.
[0024] Compared with the prior art, the device for reducing the pollution of molten tin provided by the present application has the significant advantages of simple structure and strong adaptability, and can be flexibly applied to tin baths under various different environmental conditions; in addition, the device performs excellently in capturing the remaining trace oxygen in the tin bath and can further reduce the risk of the molten tin being polluted. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] To more clearly illustrate the technical solutions in the embodiments of the present application and / or the prior art, the following will briefly introduce the drawings required for the description of the embodiments and / or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0026] Figure 1 Top view of a device for reducing tin bath pollution provided in Embodiment 1 of the present application;
[0027] Figure 2 Side view of a device for reducing tin bath pollution provided in Embodiment 1 of the present application;
[0028] Figure 3 Schematic diagram of the exhaust hole of the device for reducing tin bath pollution provided in Embodiment 1 of the present application;
[0029] Reference numerals: 1, return pipe; 2, exhaust hole; 3, air inlet; 4, flow increasing pipe. Detailed implementation manners
[0030] The following will clearly and completely describe the technical solutions of the embodiments of the present application in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all embodiments. Based on the embodiments in this specification of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection claimed by the present application.
[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation and / or positional relationship based on the orientation and / or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating and / or implying that the device and / or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating and / or implying relative importance.
[0032] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, and / or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0033] Among them, there are no special restrictions on the sources of all raw materials of the present invention, and they can be purchased on the market or prepared by conventional methods well-known to those skilled in the art.
[0034] An embodiment of the present invention provides a device for reducing tin bath pollution:
[0035] The main body of the device is a looped pipeline 1, and the shape and length of the looped pipeline 1 can be adjusted to be adapted to the external environment; an air inlet 3 and a plurality of exhaust holes 2 are provided on the looped pipeline 1, the air inlet 3 is used for introducing H2, and the exhaust holes 2 are used for discharging H2; an H2 catalytic layer is further provided on the outer wall of the looped pipeline 1, and the H2 catalytic layer is used to provide a catalytic effect to assist H2 in capturing O2.
[0036] It should be noted that the shape and length of the looped pipeline 1 can be adjusted to be adapted to tin baths of different shapes; the aperture of the exhaust hole 2 is 0.2 - 0.6 mm. In the actual operation process, the aperture of the exhaust hole 2 is adapted to the thickness of the H2 catalyst, the vertical distance between the device and the tin liquid surface, and the flow rate of
[0037] In some embodiments, a plurality of flow increasing pipelines 4 are provided on the looped pipeline 1, the flow increasing pipelines 4 are communicated with the pipe wall of the looped pipeline 1, and a plurality of exhaust holes 2 are provided on the flow increasing pipelines 4.
[0038] Preferably, the flow increasing pipeline 4 includes one or more of a straight pipeline, an S-shaped pipeline, and a cross-shaped pipeline.
[0039] Preferably, the flow increasing pipelines 4 are arranged in an equidistant distribution and / or a matrix distribution.
[0040] It should be noted that by adding the flow increasing pipelines 4 to the device and reasonably arranging the pipeline shape (such as selecting different types such as straight, S-shaped, and cross-shaped) and the pipeline interval (using equidistant distribution, matrix distribution or other specific distribution methods), the flow distribution state of the gas in the whole system can be optimized, and the coverage range of the air flow in the tin bath space can be improved.
[0041] More preferably, the exhaust holes 2 are arranged in an equidistant distribution, and the exhaust holes 2 on any adjacent looped pipeline 1 and / or flow increasing pipeline 4 are arranged in a staggered manner.
[0042] Specifically, the cross-sections of the looped pipeline 1 and the flow increasing pipeline 4 are polygons, the exhaust holes 2 are opened on a plurality of consecutive sides of the looped pipeline 1 and the flow increasing pipeline 4, and the exhaust holes 2 on adjacent sides are arranged in a staggered manner.
[0043] It should be noted that when the cross-sections of the return pipe 1 and the flow-increasing pipe 4 are rectangular, the exhaust holes 2 are opened on three consecutive sides of the return pipe 1 and the flow-increasing pipe 4. Among these three consecutive sides, the middle side is set to be parallel to and close to the side of the tin bath, so that the gas discharged from the exhaust hole 2 on this side can more directly contact the oxygen near the tin bath, improving the reaction efficiency. The two spaced-apart end sides are perpendicular to the two sides of the tin bath. This setting helps to expand the reaction range of the gas with oxygen, enabling the gas to fully react with oxygen in the vertical direction and capture the oxygen around the tin bath from different angles more comprehensively, thereby further enhancing the effect of reducing the contamination of the tin bath.
[0044] In some embodiments, the H2 catalytic layer includes one or more of a palladium (Pd) catalyst, a platinum (Pt) catalyst, and a nickel (Ni) catalyst.
[0045] Preferably, the thickness of the H2 catalytic layer is 0.1 - 0.5 mm.
[0046] This application provides a system for reducing the contamination of tin bath, including a tin bath and a device for reducing the contamination of tin bath;
[0047] The tin bath is a sealed space with an operation window, and the bottom of the tin bath is used to hold the tin bath; a mixed protective gas containing nitrogen and hydrogen is also filled inside the tin bath to prevent the tin bath from being oxidized and contaminated;
[0048] The device for reducing the contamination of tin bath is placed above the tin bath inside the tin bath and is arranged parallel to the tin bath surface; the length and shape of the return pipe 1 are adapted to the outer edge of the tin bath, and the side of the return pipe 1 with the exhaust holes 2 is arranged close to the tin bath surface.
[0049] This application provides a working method for a system for reducing the contamination of tin bath, including the following steps:
[0050] Adjust the vertical distance between the device for reducing the contamination of tin bath and the tin bath surface through the operation window, and then input H2 from the air inlet 3 of the device for reducing the contamination of tin bath. The H2 is transported along the return pipe 1 and discharged through the exhaust holes 2;
[0051] During this process, H2 is input from the air inlet 3, transported along the return pipe 1, and discharged from the exhaust hole 3. Under the catalytic action of the H2 catalytic layer, the H2 effectively captures trace amounts of O2 to prevent the contamination of the tin bath.
[0052] In some embodiments, the vertical distance between the device for reducing the contamination of tin bath and the tin bath surface is 8 - 20 mm; The flow rate of is 0.8 - 2 L / min.
[0053] In some specific embodiments, when the thickness of the palladium catalyst in the device for reducing tin liquid pollution is 0.2 mm, the pore diameter of the exhaust hole 2 is 0.3 mm; in the working method of the system for reducing tin liquid pollution, the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is 10 mm, and the flow rate is 1 L / min;
[0054] When the thickness of the palladium catalyst in the device for reducing tin liquid pollution is 0.2 mm, the pore diameter of the exhaust hole 2 is 0.5 mm; in the working method of the system for reducing tin liquid pollution, the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is 10 mm, and the flow rate is 1.5 L / min;
[0055] When the thickness of the palladium catalyst in the device for reducing tin liquid pollution is 0.3 mm, the pore diameter of the exhaust hole 2 is 0.2 mm; in the working method of the system for reducing tin liquid pollution, the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is 8 mm, and the flow rate is 0.8 L / min;
[0056] When the thickness of the palladium catalyst in the device for reducing tin liquid pollution is 0.4 mm, the pore diameter of the exhaust hole 2 is 0.4 mm; in the working method of the system for reducing tin liquid pollution, the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is 15 mm, and the flow rate is 2 L / min;
[0057] When the thickness of the platinum catalyst in the device for reducing tin liquid pollution is 0.2 mm, the pore diameter of the exhaust hole 2 is 0.6 mm; in the working method of the system for reducing tin liquid pollution, the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is 12 mm, and the flow rate is 1 L / min.
[0058] The applicant further provides the following specific reference embodiments to describe the present invention. It should be noted that these embodiments are merely descriptive and do not limit the present invention in any way.
[0059] Example 1
[0060] Refer to Figures 1 - 2 , this embodiment provides a device for reducing tin liquid pollution.
[0061] The main body of the device is a loop-shaped pipeline 1, whose pipe strips are rectangular, the cross-section is rectangular, and the outer surface of the loop-shaped pipeline is smooth, which can reduce the air flow resistance. A plurality of exhaust holes 2 and an air inlet 3 are arranged on the loop-shaped pipeline 1, and the air inlet 3 is located on one side of the loop-shaped pipeline 1. Two flow-increasing pipelines 4 with rectangular cross-sections are also arranged on the loop-shaped pipeline 1. The two flow-increasing pipelines 4 are communicated with the pipe wall of the loop-shaped pipeline 1, and a plurality of exhaust holes 2 are also opened on the flow-increasing pipelines 4. The exhaust holes 2 on the loop-shaped pipeline 1 and the flow-increasing pipelines 4 are evenly distributed at equal intervals, and between any adjacent loop-shaped pipeline 1 and / or flow-increasing pipeline 4, the exhaust holes 2 are arranged in a staggered manner. Since the cross-sections of the loop-shaped pipeline 1 and the flow-increasing pipelines 4 are both rectangular, the exhaust holes 2 are opened on two adjacent sides of the loop-shaped pipeline 1 and the flow-increasing pipelines 4. The first side is parallel and close to the tin liquid surface of the tin bath, and the second side is perpendicular to the tin liquid surface, and the exhaust holes 2 on the adjacent sides are also arranged in a staggered manner. Refer to Figure 3 . Among them, in the layout of the loop-shaped pipeline 1, the exhaust hole 2 of the loop-shaped pipeline 1 at the position opposite to the air inlet 3 is opened on the side that is both close to the air inlet 3 and perpendicular to the tin liquid, and the exhaust holes 2 of the remaining positions of the loop-shaped pipeline 1 are arranged in the reverse direction; the exhaust holes 2 on the side of the flow-increasing pipeline 4 perpendicular to the tin liquid surface are arranged in the same direction as the exhaust holes 2 at the position of the loop-shaped pipeline 1 opposite to the air inlet 3. H2 enters the loop-shaped pipeline from the air inlet 3 and is discharged from the exhaust hole 2 after being transported through the loop-shaped pipeline 1.
[0062] Among them, the aperture of the exhaust hole 2 is 0.3 mm; the H2 catalytic layer is a palladium catalyst with a thickness of 0.2 mm.
[0063] This application provides a system for reducing tin liquid pollution, including a tin bath and a device for reducing tin liquid pollution;
[0064] The tin bath is a sealed space with an operation window, and the bottom of the tin bath is used to hold tin liquid; a mixed protective gas containing nitrogen and hydrogen is also filled inside the tin bath to prevent the tin liquid from being oxidized and polluted;
[0065] The device for reducing tin liquid pollution is placed above the tin liquid inside the tin bath and is arranged parallel to the tin liquid surface; the length and shape of the loop-shaped pipeline are adapted to the outer edge of the tin liquid, and the side of the loop-shaped pipeline with exhaust holes is arranged close to the tin liquid surface.
[0066] This application provides a working method for a system for reducing tin liquid pollution, including the following steps:
[0067] Adjust the vertical distance between the device for reducing tin liquid pollution and the tin liquid surface to 10 mm through the operation window, and then input H2 from the air inlet of the device for reducing tin liquid pollution at a flow rate of 1 L / min. H2 is transported along the loop-shaped pipeline and discharged from the exhaust hole; during this process, H2 is input from the air inlet, transported through the loop-shaped pipeline, and discharged from the exhaust hole. Under the catalytic action of the H2 catalytic layer, H2 effectively captures trace amounts of O2 to prevent the tin liquid from being polluted.
[0068] Example 2
[0069] This example provides a device for reducing the pollution of tin liquid.
[0070] The main body of the device is a meandering pipeline 1, the pipe strip of which is rectangular and the cross-section is rectangular. A plurality of exhaust holes 2 and an air inlet 3 are arranged on the meandering pipeline 1, and the air inlet 3 is located on one side of the meandering pipeline 1. Two flow-increasing pipelines 4 with rectangular cross-sections are also arranged on the meandering pipeline 1. The two flow-increasing pipelines 4 are communicated with the pipe wall of the meandering pipeline 1, and a plurality of exhaust holes 2 are also opened on the flow-increasing pipelines 4. The exhaust holes 2 on the meandering pipeline 1 and the flow-increasing pipelines 4 are evenly distributed at equal intervals, and between any adjacent meandering pipeline 1 and / or flow-increasing pipeline 4, the exhaust holes 2 are arranged in a staggered manner. Since the cross-sections of the meandering pipeline 1 and the flow-increasing pipelines 4 are both rectangular, the exhaust holes 2 are opened on three adjacent sides of the meandering pipeline 1 and the flow-increasing pipelines 4. The middle side is parallel to and close to the tin liquid surface of the tin bath, and the exhaust holes 2 on any adjacent side are also arranged in a staggered manner. H2 enters the meandering pipeline from the air inlet 3 and is discharged from the exhaust holes 2 after being transported through the meandering pipeline 1. During the discharging process, H2 can accelerate the capture of trace oxygen and generate water vapor and be discharged under the catalytic action of the H2 catalytic layer, effectively preventing the tin liquid from being oxidized and polluted. Among them, the aperture of the exhaust hole 2 is 0.3 mm; the H2 catalytic layer is a palladium catalyst with a thickness of 0.2 mm.
[0071] Example 3
[0072] The difference from Example 1 is that the setting parameters of the device for reducing the pollution of tin liquid and the system working method are different, which are specifically as follows:
[0073] In the device for reducing the pollution of tin liquid, the aperture of the exhaust hole 2 is 0.5 mm; the H2 catalytic layer is a palladium catalyst with a thickness of 0.2 mm.
[0074] In the system working method for reducing the pollution of tin liquid, the vertical distance between the device and the tin liquid surface is 10 mm, and the H2 flow rate is 1.5 L / min.
[0075] Example 4
[0076] The difference from Example 1 is that the setting parameters of the device for reducing the pollution of tin liquid and the system working method are different, which are specifically as follows:
[0077] In the device for reducing the pollution of tin liquid, the aperture of the exhaust hole 2 is 0.2 mm; the H2 catalytic layer is a palladium catalyst with a thickness of 0.2 mm.
[0078] In the system working method for reducing the pollution of tin liquid, the vertical distance between the device and the tin liquid surface is 8 mm, and the H2 flow rate is 0.8 L / min.
[0079] Example 5
[0080] The difference from Example 1 lies in that the setting parameters of the device for reducing tin bath pollution and the system working method are different, specifically as follows:
[0081] In the device for reducing tin bath pollution, the aperture of the exhaust hole 2 is 0.4 mm; the H2 catalytic layer is a palladium catalyst with a thickness of 0.4 mm.
[0082] In the system working method for reducing tin bath pollution, the vertical distance between the device and the tin bath surface is 15 mm, and the H2 flow rate is 2 L / min.
[0083] Example 6
[0084] The difference from Example 1 lies in that the setting parameters of the device for reducing tin bath pollution and the system working method are different, specifically as follows:
[0085] In the device for reducing tin bath pollution, the aperture of the exhaust hole 2 is 0.6 mm; the H2 catalytic layer is a platinum catalyst with a thickness of 0.3 mm.
[0086] In the system working method for reducing tin bath pollution, the vertical distance between the device and the tin bath surface is 12 mm, and the H2 flow rate is 1 L / min.
[0087] The above are the preferred embodiments of the present application and are not used to limit the present invention. Although the present application has been described in detail with reference to the examples, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing examples and / or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. A device for reducing tin liquid pollution, characterized in that: The device body is a meandering pipe, and the shape and length of the meandering pipe can be adjusted to adapt to the external environment; The meandering pipe is provided with an air inlet and a plurality of exhaust holes, wherein the air inlet is used to introduce H2, and the exhaust holes are used to discharge H2; an H2 catalytic layer is also provided on the outer wall of the meandering pipe, and the H2 catalytic layer is used to provide catalytic action to assist H2 in capturing O2.
2. The device for reducing tin liquid pollution according to claim 1, characterized in that: A plurality of flow-increasing pipes are arranged on the meandering pipe, the flow-increasing pipes are connected to the meandering pipe, and a plurality of exhaust holes are opened on the flow-increasing pipe.
3. The device for reducing tin liquid pollution according to claim 2, characterized in that: The flow-increasing pipeline includes one or more of a straight pipeline, an S-shaped pipeline, and a cross pipeline.
4. The device for reducing tin liquid pollution according to claim 2, characterized in that: The flow-increasing pipelines are arranged in an equidistant distribution and / or a matrix distribution.
5. The device for reducing tin liquid pollution according to claim 4, characterized in that: The exhaust holes are distributed at equal intervals, and the exhaust holes on any adjacent meandering pipes and / or flow-increasing pipes are staggered.
6. The device for reducing tin liquid pollution according to claim 5, characterized in that: The cross-sections of the meandering pipe and the flow-increasing pipe are polygonal, the exhaust holes are arranged on a plurality of continuous side surfaces of the meandering pipe and the flow-increasing pipe, and the exhaust holes on adjacent side surfaces are staggered.
7. The device for reducing tin liquid pollution according to claim 1, characterized in that: The H2 catalyst layer includes one or more of a palladium catalyst, a platinum catalyst, and a nickel catalyst.
8. The device for reducing tin liquid pollution according to claim 1, characterized in that: The thickness of the H2 catalytic layer is 0.1-0.5 mm.
9. A system for reducing tin liquid pollution, characterized in that: include: A tin bath, and a device for reducing tin liquid pollution according to any one of claims 1 to 8; The tin tank is a sealed space with an operation window, and the bottom of the tin tank is used to hold the molten tin; the interior of the tin tank is also filled with a mixed protective gas containing nitrogen and hydrogen to prevent the molten tin from being oxidized and contaminated; The device for reducing tin liquid pollution is placed above the tin liquid inside the tin tank and is arranged parallel to the tin liquid surface; the length and shape of the meandering pipe are adapted to the outer edge of the tin liquid, and the side of the meandering pipe with the exhaust hole is arranged close to the tin liquid surface.
10. A method for operating a system for reducing tin liquid pollution as claimed in claim 9, characterized in that: The following steps are involved: The vertical distance between the device for reducing tin liquid pollution and the tin liquid surface is adjusted through the operation window, and then H2 is input from the air inlet of the device for reducing tin liquid pollution, and the H2 is transported along the meandering pipeline and discharged through the exhaust hole; In this process, H2 is input from the air inlet, transported through the meandering pipe, and discharged from the exhaust hole. The H2 effectively captures trace amounts of O2 under the catalytic action of the H2 catalytic layer to prevent tin liquid contamination.