Chemical recycling of polyolefins:a closed-loop cycle of waste to olefins  

作　　者：Liang Zou Run Xu Hui Wang Zhiqiang Wang Yuhan Sun Mingfeng Li 

机构地区：[1]Sinopec Research Institute of Petroleum Processing Co.,Ltd,Beijing 100083,China [2]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China [3]2060 Research Institute,ShanghaiTech University,Shanghai 201210,China

出　　处：《National Science Review》2023年第9期86-103,共18页国家科学评论（英文版）

基　　金：supported by the China Petroleum&Chemical Corporation(120040);the National Key Research and Develop-ment Program of China(2022YFA1504800);the National Natu-ral Science Foundation of China(22108289 and 21905291);the Shanghai Institute of Cleantech Innovation(E244831E01).

摘　　要：The unsuitable disposal of plastic wastes has caused serious environmental pollution,and finding a green manner to address this problem has aroused wide concern.Plastic wastes,especially polyolefin wastes,are rich in carbon and hydrogen,and chemical recycling shows distinct advantages in their conversion into olefins and realizes a closed-loop cycling of plastic wastes.Plastic wastes should be labeled before disposal.The necessity for,and methods of,pretreatment are introduced in this paper and the whole recycling process of polyolefin wastes is also summarized.As the core technology pyrolysis,including thermal,catalytic and solvolysis processes,is introduced in detail due to its potential for future development.We also briefly describe the feasible strategies of pyrolytic oil refining and life cycle assessment of the chemical recycling process.In addition,suggestions and perspectives concerning the industrial improvement of polyolefin chemical recycling are proposed.

关 键 词：POLYOLEFINS PRETREATMENT chemical recovery product refining life cycle assessment 

分 类 号：X705[环境科学与工程—环境工程]