How to choose a photovoltaic panel recycling method?
Currently, the mainstream technologies for recycling and processing photovoltaic panels mainly include physical dismantling and chemical pyrolysis. 1. Physical disassembly method The physical dismantling method primarily achieves effective separation of materials such as metals and plastics from photovoltaic panels through mechanical crushing and sorting purification. This method first utilizes professional frame-dismantling machines, glass-removing machines, and other equipment to remove the junction boxes, aluminum frames, and glass from photovoltaic panels. Next, the remaining cell parts are processed through multiple crushing equipment such as dual-shaft shredders, knife-type crushers, and disc mills, and then undergo three-stage sorting through rotary vibrating screens, airflow sorters, and electrostatic sorters, ultimately yielding products such as silicon powder, copper, and plastic. The entire crushing and sorting process is equipped with dust removal devices, effectively preventing dust pollution. II. Chemical pyrolysis method Chemical pyrolysis utilizes high-temperature pyrolysis reactions to chemically decompose the polymer materials within photovoltaic panels. The specific process is as follows: Place the photovoltaic panels, with the aluminum frames removed, into a pyrolysis furnace. Under oxygen-free, atmospheric pressure, and high temperature conditions, organic components decompose into gases and liquids, which are condensed to produce fuel oil and combustible gas. The remaining inorganic substances are converted into solid...
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