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]Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2024

卷号：912

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20240115321618);WOS:【SCI-EXPANDED(收录号:WOS:001165486200001)】；

基金：This work was supported by the Project of the National Key Research and Development Program of China (2022YFC3902402) , the Social Development Science and Technology Tackling Project of 2020 "Scientific and Innovative Action Plan of Shanghai" (20dz1203300) , the National Natural Science Foundation of China (22108081) and the Fundamental Research Funds for the Central Universities (JKB01231715) .

语种：英文

外文关键词：Municipal plastic waste; Co-pyrolysis; Chlorine; Migration characteristics; Organic chlorinated compounds

摘要：The release of chlorine during the pyrolysis of actual municipal plastic waste (MPW) was studied. Firstly, thermogravimetry-Fourier transform infrared (TG-FTIR) was analyzed to investigate the chlorine release behavior. Then, the effect of temperature on chlorine migrations was investigated by fast pyrolysis experiments in a fixed bed reactor. Results showed that chlorine released mainly between 241 and 353 degree celsius in the form of HCl or chloroesters during MPW pyrolysis. After pyrolysis, chlorine was mainly distributed in the pyrolytic gas (74.34-82.89 %) and char (10.17-21.29 %). However, the release of chlorine was inhibited due to the melting behavior of MPW at <350 degree celsius. Besides, the relative contents and types of organic chlorinated compounds in liquid products were both decreased with temperature. It was observed that polyethylene terephthalate (PET) was the greatest contributor to the formation of organic chlorinated compounds during MPW pyrolysis. Meanwhile, the pyrolysis of PET was significantly promoted by the HCl released from polyvinyl chloride (PVC). 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 provided new insights into the release and regulation of chlorine-containing pollutants during actual MPW pyrolysis.