退役Cu(InGa)Se_(2)光伏层压件封装材料精准控温热解转化路径及产物分析  

Precise temperature-controlled pyrolysis conversion pathway and production analysis of encapsulating materials of decommissioned Cu(InGa)Se_(2) photovoltaic laminated module

作　　者：黄智豪 巫宇森 秦保家 朱洁 阮菊俊 HUANG Zhihao;WU Yusen;QIN Baojia;ZHU Jie;RUAN Jujun*(School of Environmental Science and Engineering,Sun Yat-Sen University,Guangzhou 511400,China)

机构地区：[1]中山大学环境科学与工程学院,广州511400

出　　处：《环境工程学报》2025年第2期373-383,共11页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划资助项目(2023YFC3906100);国家自然科学基金资助项目(52170146);广州市重点研发计划资助项目(202206010037)。

摘　　要：光伏组件的产量随着新能源产业的迅猛发展而快速增加。在产品快速更新换代和老化退役的背景下,大量报废光伏组件亟待回收的情况将难以避免。光伏层压件表面封装材料的去除是回收工作的起点,也是资源化利用的难点。对退役Cu(InGa)Se_(2)光伏层压件进行控温热解,研究了封装材料去除情况及热解产物性质,探讨了热解过程封装材料乙烯-醋酸乙烯共聚物和聚对苯二甲酸乙二醇酯的转化路径。经490℃热解后封装材料可被完全去除,气体产物中含42.80%的(S)-缩水甘油和1-丁烯,具有一定资源化价值,CO_(2)体积分数为11.86%,相比525℃热解时降低了76.19%,而465℃热解则无法完全去除封装材料;基于热解产物组成及键能计算结果,分析了封装材料乙烯-醋酸乙烯共聚物和聚对苯二甲酸乙二醇酯热解生成小分子自由基的路径,初步探究了封装材料的热解转化机理。本研究成果有助于退役Cu(InGa)Se_(2)层压件封装材料热解处理的精确控温和节能降碳,为退役光伏组件的资源化利用提供科学信息。The production of photovoltaic modules has increased rapidly with the fast development of the new energy industry.Under the background of rapid upgrading and aging of products,the situation that a great number of discarded photovoltaic modules need to be recycled is inevitable.The removal of encapsulation on the surface of photovoltaic laminated modules is the starting point of recycling work and a difficulty of resource utilization.In this study,the temperature-controlled pyrolysis of decommissioned Cu(InGa)Se_(2) photovoltaic laminated modules was carried out.The removal of encapsulation and the properties of pyrolysis products were studied.The conversion pathway of ethylene-vinyl acetate copolymer and polyethylene terephthalate in the pyrolysis process was discussed.The encapsulation material can be completely removed after 490℃pyrolysis.The gas product contained 42.80%Oxiranemethanol,(S)-and 1-Butene,which had a certain value.Volume fraction of CO_(2) was 11.86%,which was 76.19%lower than that of 525℃pyrolysis.However,pyrolysis at 465℃cannot completely remove the encapsulation.Based on the composition of pyrolysis products and the calculation result of bond energy,the pyrolysis pathway of ethylene-vinyl acetate copolymer and polyethylene terephthalate to form small molecular free radicals was analyzed.The conversion mechanism of encapsulation materials was preliminarily explored.This research can contribute to the precise temperature control,energy saving and carbon reduction of pyrolysis treatment of decommissioned Cu(InGa)Se_(2) laminated modules.And provide a reference for the resource utilization of waste photovoltaic modules.

关 键 词：退役Cu(InGa)Se_(2)光伏组件 热解转化 精准控温 键能分析 节能降碳 

分 类 号：X705[环境科学与工程—环境工程]