文献类型：期刊文献

英文题名：Pyrolysis of Municipal Plastic Waste: Chlorine Distribution and Formation of Organic Chlorinated Compounds

作者：Gao, Peipei[1,2]; Hu, Zichao[1,2]; Sheng, Yue[1,2]; Pan, Weitong[1,2]; Ding, Lu[1,2]; Tang, Longfei[1,2]; Chen, Xueli[1,2]; Wang, Fuchen[1,2]

机构：[1] Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, Shanghai, 200237, China; [2] Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230327433)

语种：英文

外文关键词：Chemical reactors - Chlorine - Fourier transform infrared spectroscopy - Plastic bottles - Polyethylene terephthalates - Polyvinyl chlorides - Pyrolysis - Thermogravimetric analysis

摘要：Thermogravimetry-Fourier transform infrared (TG-FTIR) was analyzed to investigate the chlorine release behavior during the pyrolysis of municipal plastic waste (MPW). The effect of pyrolytic temperature on chlorine migrations was investigated by fast pyrolysis experiments in a fixed bed reactor. Results showed that during MPW pyrolysis, chlorine released mainly between 241-353 °C in the form of HCl or organic chlorinated compounds. After the pyrolysis of MPW, chlorine was mainly distributed in the pyrolytic gas (74.34-82.89%) and char (10.17-21.29%). Meanwhile, the release of chlorine was inhibited due to the melting behavior of MPW during the pyrolysis process. The relative contents and types of organic chlorinated compounds in liquid products were both decreased with temperature. It was found that the pyrolysis of polyethylene terephthalate (PET) was significantly promoted by the HCl released from polyvinyl chloride (PVC). Besides, PET was the greatest contributor to the formation of organic chlorinated compounds in the process of MPW pyrolysis. Subsequently, the pathways for the formation of organic chlorinated compounds through the co-pyrolysis of PVC and PET were proposed, including the initial degradation and subsequent chlorination of PET. These findings offered insights that can inform the regulation of chlorine in MPW pyrolytic products. ? 2023, The Authors. All rights reserved.