Progress in Chemical Recovery and Resource Utilization of Waste Plastics

doi:10.19491/j.issn.1001-9278.2021.08.007

Abstract

Abstract:

Plastics play an important role in human social progress and economic development. However， the large-scale production and use of plastics will inevitably produce a large amount of waste plastics， which have undoubtedly brought serious pollution to surface water， soil and ocean. Plastic pollution has become a global sustainable development challenge. The traditional physical recovery methods are difficult to meet the requirements of environmental protection and recycling. It is of great importance and urgency to develop efficient chemical recovery and resource utilization. Aiming at 8 types of typical plastics with a large quantity and a wide range of applications including polyethylene terephthalate， polyolefin （including polyethylene and polypropylene）， polyvinyl chloride and polyurethane， this paper summarized the research progress in the chemical recovery and resource utilization of waste plastics at home and abroad， especially the new technologies developed in recent 10 years. This paper can provide a good reference for the development of chemical recycling technologies of waste plastics.

Key words: waste plastic, chemical recovery, resource utilization

CLC Number:

TQ317

SUN Xiaodong, CAO Ding, HU Qianqian, YAO Wenqing, LI Jinghong, FENG Yongjun. Progress in Chemical Recovery and Resource Utilization of Waste Plastics[J]. China Plastics, 2021, 35(8): 44-54.

Figures/Tables 3

References 84

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塑料种类	2020年产量/kt	资源化利用的方法	应用
PET	78 200	醇解法、水解法、氨解/胺解法	纤维、薄膜、纺织品、工程塑料、包装
PP	25 815.9	化学氧化、催化氢解、催化热解、超临界水液化催化成油	汽车零部件、家电制品、玩具及化工管道
PE	17 790	化学氧化、催化氢解、催化热解、超临界水液化催化成油	薄膜、容器、管道、单丝、电线电缆、日用品
PVC	20 000	锡酸锌阻燃剂、磁性粒子浮选、离子液体催化氢解、电化学类电芬顿技术	医药、化工防腐材料、包装材料、人造革、塑料制品等软制品和异型材、管材、板材等硬制品
PU	18 000	催化降聚、催化氢解	鞋类、交通、建筑、机械、体育、电气和电子、海洋
PS	2 433.8	溶液浇铸法、生物降解	家电、电子、汽车及玩具
PC	1 130	解聚、亚/超临界水液化成油技术	飞机、汽车、电子、建筑、医疗
PA	16	水热液化成油、微波辅助解聚	电子电器、汽车工业

塑料种类	2020年产量/kt	资源化利用的方法	应用
PET	78 200	醇解法、水解法、氨解/胺解法	纤维、薄膜、纺织品、工程塑料、包装
PP	25 815.9	化学氧化、催化氢解、催化热解、超临界水液化催化成油	汽车零部件、家电制品、玩具及化工管道
PE	17 790	化学氧化、催化氢解、催化热解、超临界水液化催化成油	薄膜、容器、管道、单丝、电线电缆、日用品
PVC	20 000	锡酸锌阻燃剂、磁性粒子浮选、离子液体催化氢解、电化学类电芬顿技术	医药、化工防腐材料、包装材料、人造革、塑料制品等软制品和异型材、管材、板材等硬制品
PU	18 000	催化降聚、催化氢解	鞋类、交通、建筑、机械、体育、电气和电子、海洋
PS	2 433.8	溶液浇铸法、生物降解	家电、电子、汽车及玩具
PC	1 130	解聚、亚/超临界水液化成油技术	飞机、汽车、电子、建筑、医疗
PA	16	水热液化成油、微波辅助解聚	电子电器、汽车工业

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