Department of Environmental Science and Engineering, University of Science andTechnology of China

随着废弃电子和电气设备(WEEE)数量的增加,废弃电子塑料已成为新兴且增长最快的废物流之一。在废弃电子塑料中,溴化阻燃剂(BFR)材料已成为回收处理的主要障碍。为解决能源危机和BFR-塑料的环境降解问题,热解回收被提议作为一种环境友好的方法,废弃电子塑料可用于生产清洁燃料或化学原料。总结了当前用于BFR-塑料回收的热解技术,首先介绍了废弃电子塑料的热解行为,包括热解机制和热解产品。其次,详细介绍了溴化阻燃剂在热解过程中迁移转化过程及其机制。然后系统性回顾了关于电子塑料热解过程中含溴污染物排放、转化和分布的研究进展。最后提出一种回收路线,通过共热解含溴化阻燃剂的废弃电子塑料与生物质,以获得高质量热解油,并降低含溴污染物排放,旨在获得无溴油以供商业应用。

Due to the increasing amount of waste electronic plastics and electrical equipment(WEEE), waste electronic plastics, which contain brominated flame retardants ( BFR) materials,have become one of the emerging and fastest-growing waste streams and a major obstacle to recycling.Pyrolytic recovery has been proposed as an environmentally friendly method for clean fuel production orchemical feedstock for these e-waste plastics. This paper summarizes the current pyrolysis technologiesfor the recovery of BFR - plastics, aiming to solve the energy crisis and environmental degradationcaused by BFR-plastics. Firstly, the pyrolysis behavior of waste electronic plastics, such as pyrolysismechanism and pyrolysis products, is introduced. Secondly, the migration and transformation process ofbrominated flame retardants during pyrolysis and its mechanism are introduced in detail. Then, the re⁃search progress on the emission, transformation and distribution of brominated pollutants during the py⁃rolysis of electronic plastics is systematically reviewed. Finally, a recovery route is proposed to obtainhigh quality pyrolytic oil and reduce the emission of brominated pollutants by co-pyrolysis of wasteelectronic plastics and biomass containing brominated flame retardants, aiming at obtaining bromine-free oil for commercial application.

国家自然科学基金资助项目(21976170,22122608)

刘武军.废弃电子塑料热解资源化及过程中溴化阻燃剂的迁移转化及释放[J].能源环境保护,2024,38(5):67-77.

LIU Wujun. Migration, transformation and release of pollutants during pyrolysis of the waste electronic plastics[J]. Energy Environmental Protection, 2024, 38(5): 67-77.