Jiang Haibin, Liu Wenlu, Zhang Xiaohong, Qiao Jinliang
SINOPEC Beijing Research Institute of Chemical Industry 14, Beisanhuan Donglu, Chaoyang District Beijing 100013 China.
College of Materials Science and Engineering Beijing University of Chemical Technology 15, Beisanhuan Donglu, Chaoyang District Beijing 100029 China.
Glob Chall. 2020 Feb 14;4(4):1900074. doi: 10.1002/gch2.201900074. eCollection 2020 Apr.
Use of plastics faces much criticism because of its shocking and increasing impact on the environment. But banning plastic will not help the environment. Only appropriate recycling of plastic waste can give satisfying solution. A lab-scale chemical recycling method, in which a mixture of plastic wastes and plant oil is continuously cracked into ethylene, propylene, and other useful chemicals by using microwave-assisted high-temperature pyrolysis, is developed. The method has delivered interesting leads that provide the basis for setting up a new process. Based on the encouraging results, a "drop-in" method for a renewable and circular polymer industry is also proposed. If it is commercially realized, plastic waste and plant oils will be the feedstock for the polymer industry and this industry will become renewable and circular.
由于塑料对环境产生的惊人且日益增加的影响，其使用面临诸多批评。但禁止使用塑料对环境并无益处。只有对塑料废物进行适当回收才能提供令人满意的解决方案。一种实验室规模的化学回收方法被开发出来，在该方法中，塑料废物和植物油的混合物通过微波辅助高温热解被连续裂解为乙烯、丙烯和其他有用的化学品。该方法已取得了有趣的成果，为建立新工艺提供了基础。基于这些令人鼓舞的结果，还提出了一种适用于可再生循环聚合物行业的“直接替换”方法。如果能够实现商业化，塑料废物和植物油将成为聚合物行业的原料，并且该行业将变得可再生且循环。
