How to recycle solar panels?
With the increasing popularity and use of new energy, solar panels, as one of the representatives of new energy, are widely used. The actual lifespan of solar panels is actually only 25 years, so at present, there are a lot of scrapped solar panels, and there will be more and more. So how do you go about recycling these solar panels?
A typical crystalline silicon solar panel is made of 65-75% glass, 10-15% aluminum frame, 10% plastic and 3-5% silicon. The photoelectric conversion efficiency of the battery will drop sharply. If it is directly scrapped and landfilled, it will occupy too much land area and damage the environment. However, as a new type of electronic waste, crystalline silicon solar panels contain abundant renewable resources, such as: high-white low-iron tempered glass, aluminum, silver and high-purity crystalline silicon, etc., which have high recovery reuse value. With the rapid development of the photovoltaic industry, the installed capacity of crystalline silicon solar panels will increase, and more and more waste panels will be discarded after reaching the end of their service life. How to recycle waste crystalline silicon solar panels will be imminent.
The structure of the crystalline silicon solar cell panel includes, from top to bottom, a glass plate, EVA, cells, and a backplane (as shown in Figure 5). When recycling crystalline silicon solar panels, the most critical process is to separate the cells as completely as possible, that is, to remove all the EVA in the panels. The battery recycling process is mainly to separate the crystalline silicon in the battery from precious metals such as aluminum and silver. Here are a few common recycling methods:
1. Aged or broken solar panels are often sent to glass recycling facilities where only glass and aluminum frames are recycled. The remaining material will be sent to the cement furnace for incineration. In addition, glass recycling plants can only recycle special glasses from solar panels and mix them with other ordinary glass, resulting in waste. This crude recycling method is rarely used anymore.
2. The solar photovoltaic panel recycling equipment developed and manufactured by SUNY GROUP can disassemble and sort solar panels. After the sorted materials are processed and packaged, they will be sent to different industries for reuse. Among them, two-thirds of the glass is recycled as cullet and sent to the glass manufacturing industry; aluminum frames are sent to aluminum refineries; waste plastics can be used as fuel in cement plants; recycled silicon can be used in the precious metal industry are reused; finally, the remaining cables and connectors are crushed and sold as copper beads for maximum recycling.
The specific process of photovoltaic panel recycling and processing equipment: first, remove the glass on the photovoltaic panel; second, disassemble, remove the backplane and wires; third, break the components and remove the outer tempered glass; fourth, carry out Pyrolysis, the main purpose of this step is to dissolve EVA; the next step is extraction, to remove valuable metals and silicon materials from the components. It has been officially put into operation and can dismantle, sort, process and recycle 95% of the materials in crystalline silicon photovoltaic panels: 2/3 of the glass is recycled into broken glass and sent to the glass factory; the aluminum frame is It is sent to aluminum refineries; waste plastics can be used as fuel in cement plants; the recovered silicon can be reused in the precious metals industry; and the remaining cables and connectors are crushed and sold as copper beads.
The above is the relevant introduction about the waste solar panel recycling equipment. In fact, with the continuous development of science and technology, the recycling technology of solar panels is also constantly updated and optimized. SUNY GROUP, as a professional manufacturer of solid waste recycling equipment, is in The recycling of solar panels also has unique advantages. If you need it, we can customize the corresponding recycling plan for you. Welcome to learn online at any time.
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