中南大学学报（自然科学版）2024，Vol.55Issue(6)：2117-2128,12.DOI:10.11817/j.issn.1672-7207.2024.06.006
退役晶硅光伏组件中材料物质回收技术现状分析与建议
Current situation analysis and suggestions on recycling technologies for materials contained in end-of-life crystalline silicon photovoltaic modules
摘要
Abstract
End-of-life crystalline silicon photovoltaic(c-Si PV)modules contain both valuable materials and environmentally hazardous substances.Disposal of end-of-life c-Si PV modules by incineration and landfill is inappropriate,which is inconsistent with the idea of PV technology as a green and clean energy technology.On the contrary,recycling the materials contained in end-of-life c-Si PV modules offers significant environmental and economic benefits,which is conducive to the sustainable development of PV industry.Aiming at the high-value recycling of the materials contained in end-of-life c-Si PV modules,relevant literature at home and abroad was reviewed to summarize and analyse the advantages and disadvantages of the existing recycling technologies for different materials contained in end-of-life c-Si PV modules.Based on these,a technical path for the comprehensive recycling of the materials contained in end-of-life c-Si PV modules was proposed.Based on the structure and material characteristics of c-Si PV modules,a certain procedural combination of physical treatment,thermal treatment,and chemical treatment is used to recycle each material in the module.Firstly,aluminum frame and junction box are recovered by simple disassembly.Secondly,glass and backsheet are recovered by heating-assisted physical stripping and then EVA is pyrolyzed to recover the energy embedded in it.Thirdly,silicon cell fragments and ribbons are treated by hydrometallurgy or pyrometallurgy to recover Si and metal elements.These suggestions provide a reference for the PV recycling industry to develop low-cost,green,and high-efficiently recycling processes.关键词
退役/完整光伏组件/破碎光伏组件/晶硅/回收/材料物质Key words
end-of-life/intact PV modules/broken PV modules/crystalline silicon/recycling/materials分类
资源环境引用本文复制引用
王魁,李金惠,刘丽丽..退役晶硅光伏组件中材料物质回收技术现状分析与建议[J].中南大学学报（自然科学版）,2024,55(6):2117-2128,12.基金项目
国家重点研发计划项目(2019YFC1908504)(Project(2019YFC1908504)supported by the National Key Research and Development Program of China （2019YFC1908504）
