文献类型：期刊文献

英文题名：Study on the pyrolysis characteristics and char gasification kinetics of pre-separated automobile shredder residues

作者：Tan, Jinpeng[1];Li, Weifeng[1];Tang, Longfei[1];Chen, Xueli[1];Liu, Haifeng[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Resource Utilizat Carbon Containing W, Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：12

期号：2

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20241215776967);WOS:【SCI-EXPANDED(收录号:WOS:001219113800001)】；

基金：This study was supported by the National Natural Science Founda- tion of China (22278133 and U21B2088) .

语种：英文

外文关键词：Automobile shredder residues; Pre-sorting; Product characterization; Heavy metals; Gasification kinetics

摘要：Automobile shredder residue (ASR) is a typical solid waste produced by the end-of-life automobile industry. The pyrolysis and gasification of ASR are effective methods to achieve reduction and resource utilization. By means of thermogravimetric analysis and fixed-bed experiments, the distribution as well as physicochemical properties of five typical ASR pyrolysis products after pre-sorting were systematically investigated, and the gasification kinetics of their pyrolysis char under CO2 as well as steam were also studied. Results showed that the pyrolysis of ASR was basically completed at 500 degrees C, and the pyrolysis gas yield increased significantly with temperature. The tar contained mainly poly-benzene rings with carbon atoms C11-15 and their derivatives. At high temperatures, the structure of pyrolysis char tended to become more ordered, with small functional group such as - OH, - NH, CH3, - C--C -, and - COOH fracturing. The residual amounts of heavy metals such as Cr, Pb, and Ni in pyrolysis char were mostly exceed 45%, which were significantly affected by the type of heavy metals, pyrolysis temperature and material type. Hydrogen production from steam gasification accounted for up to 65%, and the gasification reactivity was better than that of CO2 gasification. The activation energy (E) calculated through shrinking core model (SCM) and random pore model (RPM) was 38.81-105.44 kJ/mol and 39.53-98.56 kJ/mol, respectively, which provided a good fit to the gasification kinetics in two gasification atmospheres. This study provides detailed data for the ASR pyrolysis and gasification technology, which is an important reference value for ASR research.