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Analysis of pyrolysis technology of solar photovoltaic panel recycling treatment

2025-04-11 08:29:36
Solar photovoltaic panel thermal cracking technology, as an emerging recycling solution, has broad prospects in the international market. The International Renewable Energy Agency (IRENA) predicts that global photovoltaic waste will grow to 78 million tons in 2050, giving rise to a 10-billion-level recycling market. The technology through the high temperature anaerobic decomposition of photovoltaic panels in the polymer materials (such as EVA film), silicon, silver, copper, aluminum, glass and other materials efficient recovery, both environmental protection and economic benefits. Here is the technical and benefit analysis: First, technical advantages 1. Efficient material separation The decomposition of organic binders in the oxygen-free environment of 400-600 ° C avoids pollution from incination, while maintaining the integrity of silicon wafers, metal electrodes (silver, copper) and glass with recovery purity of up to 90% or more. Compared to traditional mechanical grinding (which only recovers 50-60% of the material), thermal cracking can extract higher value silver (which accounts for more than 30% of the cost of photovoltaic panels) and ultra-pure silicon. 2. Environmental compliance The European Union’s Waste Electrical and Electronic Equipment Directive (WEEE) requires the recovery rate of photovoltaic panels to be ≥85%, and thermal cracking technology can meet or even exceed this standard to avoid the leakage of toxic substances such as lead and cadmium caused by landfill. 3. Carbon emission advantages: Studies have shown that the carbon footprint per ton of photovoltaic panels for thermal cracking is 40% lower than that for incineration, which is in line with the goal of carbon neutrality. 4. Economic improvement The cost of post-processing at scale can be reduced to 150-300 euros/ton, while the value of recovered silver (~5kg/ ton of photovoltaic panels) and silicon materials can reach 500-800 euros/ton, achieving a net benefit. Second, recycling value and benefit 1. Material recycling economy 1MW photovoltaic panels (about 50 tons) can be recovered by thermal cracking: Silicon (12-15 tons) : purified Silver (250-300g) : used directly in conductive pastes, worth about $2000 /kg. Glass (70% by weight) : High purity can be used in buildings or new photovoltaic panels. 2. Environmental benefits Each ton of recycled PV panels reduces 1.2 tons of CO₂ emissions (compared to original mining) and avoids polluting the soil with toxic substances. Henan Lukun Environmental Protection Technology Co., Ltd. R & D production of photovoltaic panel thermal cracking treatment equipment has a mature technology, widely praised in the market, customers through this treatment process has brought efficient economic benefits.
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