摘要
利用热重分析仪和流化床电加热炉实验装置研究了废旧电路板焚烧回收过程中HBr的生成与脱除特性。结果表明:HBr主要在电路板快速失重阶段(290～406℃)析出,与溴化环氧树脂和环氧树脂的主链降解同时发生。添加CaO能有效地脱除焚烧过程产生的HBr,同时不影响电路板的降解行为;通过添加适当比例的CaO以及控制加热速率、流化床温度等焚烧条件可以较好地消除HBr的危害。
The characteristics of HBr forming and scavenging during the combustion of waste printed circuit boards were investigated by using the TG-｜FTIR and a fluidized bed system.The results indicated that HBr was mainly released at the fast weight-｜losing stage（290 to 406 ℃） of printed circuit boards,accompanying with the main chain scissions of epoxy and brominated epoxy backbones;HBr could be efficiently scavenged by adding calcium oxide,which had no negative effect on the degradation behavior of printed circuit boards;and the harm of HBr could be efficiently eliminated by adding proper calcium oxide as well as by controlling the heating rate and the temperature.
出处
《能源工程》
2011年第2期45-49,共5页
Energy Engineering
基金
国家863计划资助项目(2007AA061301-05)
关键词
废线路板
流化床
焚烧
氧化钙
溴化氢
waste printed circuit boards
fluidized bed
combustion
calcium oxide
hydrogen bromide
