Method for recycling solar waste boards

Abstract

The application provides a recycling method of solar waste board, comprising the following steps: cutting the largest area of glass board of the solar waste board by laser or diamond, removing the aluminum frame, removing the non-glass parts such as back plate, battery piece and wire on the surface of the glass board by using a grinding wheel device, polishing the obtained glass board piece to restore the bright surface, cutting and compounding the glass board piece with a multi-layer glass board piece after size processing, and manufacturing building materials, thereby achieving the benefits of low-carbon building materials; the remaining aluminum frame and the glass part clamped by the aluminum frame are broken, the aluminum and the glass are separated, the aluminum and the broken glass are separated by eddy current, the obtained aluminum can be remelted, the broken glass can be used as graded material, the obtained grinding debris of the back plate, the battery piece and the wire removed by the grinding wheel device is separated and recycled by using a flotation technology, and the plastic (back plate), silicon (battery piece) and metal (wire) can be fully recycled, thereby retaining the maximum benefits of each material of the solar waste board.

Description

Technical Field

[0001] This invention relates to a method for reusing waste solar panels, and particularly to a method for obtaining the largest area of ​​intact glass from waste solar panels, cutting and composite them into glass building materials, while the dismantled aluminum frames and grinding debris can be recycled and reused. Background Technology

[0002] As fossil fuels are gradually depleted due to continuous human exploitation, the development of new energy sources is extremely important. Solar power generation has become one of the key areas for alternative energy development in countries around the world. However, with the increasing number of solar panels in use, the number of waste solar panels that countries will need to deal with in the future is also increasing. Solar panels consist of solar cells encapsulated in a material (such as EVA plastic) between glass and a backsheet, and then framed with an aluminum frame. Since 90% of solar cells on the market are made of silicon crystal, the main materials of a solar panel are approximately 75% glass, 10% aluminum, and 10% vinyl acetate polymer (EVA), with other materials including silicon, copper, and silver. Because solar panels contain recyclable materials, waste solar panels are generally recycled. Currently, the process involves dismantling the aluminum frame, junction box, and cables, then crushing the solar panel. The crushed material is then transported to an incinerator, exported overseas, or reused. The crushed glass, processed into "glass sand," can be mixed with asphalt for road paving and high-pressure concrete bricks, providing reflectivity at night and anti-slip properties—making it an environmentally friendly building material. However, crushing intact glass is a wasteful and environmentally unfriendly act. Summary of the Invention

[0003] The main objective of this invention is to provide a method for reusing waste solar panels, which can make good use of the various materials of the waste solar panels and enable the materials to be recycled.

[0004] This invention provides a method for reusing waste solar panels, the method of which is as follows:

[0005] (1) Remove the aluminum frame and take out the glass panel with the largest area: Cut the glass panel with a laser or diamond to the largest area of ​​the solar waste panel, separate the aluminum frame from the solar waste panel, and take out the glass panel with the largest area.

[0006] (2) Remove the non-glass parts such as the backplate, battery cells and wires on the glass plate: Remove the non-glass parts such as the backplate, battery cells and wires on the glass plate obtained in step (1) with a grinding wheel to obtain a complete glass plate and generate grinding debris.

[0007] (3) Polishing the surface of the glass plate: Polish the surface of the glass plate obtained in step (2) to restore the glossy surface of the glass plate.

[0008] (4) Glass sheet processing and cutting: Cut the glass sheet obtained in step (3) into the required size;

[0009] (5) Glass sheets are composited into building materials: The glass sheets obtained in step (4) are composited to form composite building materials, which can be used as glass building materials.

[0010] (6) Recycling and reuse of aluminum frame and glass sandwiched by aluminum frame: Break the aluminum frame and glass sandwiched by aluminum frame obtained in step (1) to separate aluminum and glass. Then use eddy current to separate aluminum and broken glass. Aluminum can be remelted and broken glass can be used as graded material.

[0011] (7) Recycling and reuse of grinding chips: The grinding chips obtained from the backplate, battery cell and wires removed by the grinding wheel process in step (2) are then separated and recycled by flotation technology to recover plastic (backplate), silicon (battery cell) and metal (wire), and all materials can be fully recycled.

[0012] The advantages of this invention's method for reusing waste solar panels are as follows: the glass portion of the waste solar panels is completely removed to the maximum extent to be made into glass building materials, allowing the waste glass sheets to be fully reused. These materials can replace tiles, wall decorations, wallpaper, etc., and beautify indoor and outdoor walls and ceilings, significantly reducing carbon emissions. The grinding shavings generated from removing the aluminum frame and the glass portion held by the aluminum frame can also be recycled and reused. All materials from the waste solar panels can be fully recycled, and the reuse of waste solar panels has profitable economic benefits and maximum utilization value. Attached Figure Description

[0013] Figure 1 The diagram shown is a flowchart of the first embodiment of the present invention.

[0014] Figure 2 The image shown is an exploded perspective view of the glass building material manufactured according to an embodiment of the present invention.

[0015] Figure 3 The image shown is a three-dimensional assembly diagram of the glass building material manufactured according to an embodiment of the present invention.

[0016] Figure 4 The diagram shown is a cross-sectional view of the glass building material manufactured according to an embodiment of the present invention.

[0017] Figure 5 The diagram shown is a cross-sectional view of another glass building material manufactured according to an embodiment of the present invention.

[0018] Explanation of icon numbers:

[0019] 1-Glass building material; 11-Upper glass panel; 12-Lower glass panel; 13-Intermediate material; 14-Edge adhesive; A-Space. Detailed Implementation

[0020] To achieve the aforementioned purposes and effects, the technical means employed in this invention are described in detail below with reference to the accompanying drawings:

[0021] For an embodiment of the present invention, a method for reusing waste solar panels, please refer to [link / reference]. Figure 1 As shown, the method is as follows:

[0022] (1) Remove the aluminum frame and take out the glass panel with the largest area: Cut the glass panel with a laser or diamond to the largest area of ​​the solar waste panel, separate the aluminum frame from the solar waste panel, and take out the glass panel with the largest area.

[0023] (2) Remove the non-glass parts such as the back plate, battery cells and wires on the glass plate: Remove the non-glass parts such as the back plate, battery cells and wires on the glass plate obtained in step (1) with a grinding wheel to obtain a complete glass plate and generate grinding debris.

[0024] (3) Polishing the surface of the glass plate: Polish the surface of the glass plate obtained in step (2) to restore the glossy surface of the glass plate.

[0025] (4) Glass sheet processing and cutting: Cut the glass sheet obtained in step (3) into the required size. The cut size can be standardized, and the size can be 30×30 cm, 30×60 cm, 45×45 cm, etc.

[0026] (5) Glass sheets are composited into building materials: The glass sheets obtained in step (4) are stacked in multiple layers to form composite building materials, which can be used as glass building materials.

[0027] (6) Recycling and reuse of aluminum frame and glass sandwiched by aluminum frame: Break the aluminum frame and glass sandwiched by aluminum frame obtained in step (1) to separate aluminum and glass. Then use eddy current to separate aluminum and broken glass. Aluminum can be remelted and broken glass can be used as graded material.

[0028] (7) Recycling and reuse of grinding chips: The grinding chips obtained from the backplate, battery cell and wires removed by the grinding wheel process in step (2) are then separated and recycled by flotation technology to recover plastic (backplate), silicon (battery cell) and metal (wire), and all materials can be fully recycled.

[0029] For the method of producing glass building materials from the above-mentioned waste solar panels, please refer to [link to relevant documentation]. Figures 2-5As shown, the main process involves cutting glass removed from waste solar panels, creating an upper glass panel 11 and a lower glass panel 12. An intermediate material 13 is placed between the upper glass panel 11 and the lower glass panel 12. The edges of the upper glass panel 11 and the lower glass panel 12 are then sealed and glued together with edge adhesive 14 to form a glass building material 1. Alternatively, the intermediate material 13 can be placed on the bottom surface of the upper glass panel 11 or on the top surface of the lower glass panel 12, forming a space A between the upper glass panel 11 and the lower glass panel 12 (e.g., ...). Figure 5 As shown), the upper glass plate 11 and the lower glass plate 12 are then sealed and glued together with edge adhesive 14 to form a glass building material 1 with a space A in the middle. The intermediate material 13 can be heat insulation paper, heat insulation coating or decorative sheet, etc.; the edge adhesive 14 can be one of the following adhesive materials: EVA (ethylene vinyl acetate copolymer), PET (polyethylene terephthalate) or resin. Thus, a composite glass building material 1 is made from the glass of solar waste panels. If the intermediate material 13 is a heat insulation layer, it has a heat insulation effect. Furthermore, the space A formed between the upper glass plate 11 and the lower glass plate 12 can significantly reduce heat conduction, achieving a better heat insulation effect. The intermediate material 13 can also be a decorative piece with patterns, designs, or colors, and can be manufactured into glass building materials 1 with various patterns and colors. The glass building material 1 made by this invention can be used as a substitute for ceramic tiles, wall tiles, floor tiles, etc., and can be used to beautify the decoration of walls, floors, ceilings, and other buildings. Moreover, solar panels have excellent strength, and the glass building material 1 made from the glass of solar waste panels also has excellent strength, heat insulation, and frost resistance. The glass building material 1 of this invention can also be cut into smaller sizes for use as mosaic tiles. The raw material of the glass building material 1 of this invention is solar waste panels, which is a green building material (low-carbon building material). The carbon emissions of the processed product are far less than those of ceramic tiles, wallpaper, stainless steel, plastics, and other building materials, and it has the advantage of low carbon emissions.

[0030] In summary, the present invention has indeed achieved the intended purpose and effect, and is more ideal and practical than known technologies. The above-described embodiments are merely specific descriptions of preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention patent application. For example, any equivalent changes and modifications made without departing from the technical means disclosed in the present invention should be included in the scope of protection covered by the present invention patent application.

Claims

1. A method for reusing waste solar panels, characterized in that: The method is as follows: (1) Remove the aluminum frame and take out the glass panel with the largest area: Cut the glass panel with a laser or diamond to the largest area of ​​the solar waste panel, separate the aluminum frame from the solar waste panel, and take out the glass panel with the largest area. (2) Remove the non-glass portion of the glass plate: Remove the non-glass portion of the glass plate obtained in step (1) with a grinding wheel. The non-glass portion includes the back plate, battery cells and wires, to obtain a complete glass plate and generate abrasive shavings. (3) Polishing the surface of the glass plate: Polish the surface of the glass plate obtained in step (2) to restore the glossy surface of the glass plate. (4) Glass sheet processing and cutting: Cut the glass sheet obtained in step (3) into the required size; (5) Glass sheets are composited into building materials: The glass sheets obtained in step (4) are composited to form composite building materials, which can be used as glass building materials. (6) Recycling and reuse of aluminum frame and glass sandwiched by aluminum frame: Break the aluminum frame and glass sandwiched by aluminum frame obtained in step (1) to separate aluminum and glass. Then use eddy current to separate aluminum and broken glass. Aluminum can be remelted and broken glass can be used as graded material. (7) Recycling and reuse of grinding chips: The grinding chips obtained from the backplate, battery cells and wires removed by the grinding wheel process in step (2) are then separated and recycled into plastics, silicon and metals by flotation technology, and all materials can be fully recycled.

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