废弃塑料化学回收专利技术分析

Analysis of patent technologies for chemical recycling of waste plastics

塑料对社会进步和经济发展发挥了重要作用,但也因不合理使用、不恰当处置等造成了环境污染及出现“微塑料”等可能影响人类健康的问题。化学回收技术适应性强,是废弃塑料回收利用技术的重要发展方向。从专利文献出发,综述了全球废弃塑料化学回收技术的分布、技术路线和发展趋势,介绍了化学裂解、化学解聚两种关键专利技术,为废弃塑料回收利用技术的研究提供了方向和发展建议。

Plastics play an important role in social progress and economic development,but they also cause environmental pollution and potential health issues such as“microplastics”due to improper use and disposal.With good adaptability,chemical recycling is an important development direction for recovering and recycling of waste plastics.This paper summarizes the distribution,technical route and trends of chemical recycling technologies in global based on the analysis of the patents in two aspects of chemical cracking and chemical depolymerization,and provides technical research direction and development suggestions to waste plastic recycling R&D team and enterprises.