文献类型：期刊文献

英文题名：Co-pyrolysis performances of lignite and waste plastic from the perspective of hydrogen migration and redistribution characteristics

作者：Cao, Song[1];Huang, Sheng[1];Wu, Shiyong[1];Wu, Youqing[1];Gao, Jinsheng[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：364

外文期刊名：FUEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001180283300001)】；

基金：We gratefully acknowledge financial support of this work by the National Key R & D Program of China (Grant No.2022YFB4101300) and National Natural Science Foundation of China (22378129) .

语种：英文

外文关键词：Low-rank coal; Co-pyrolysis; Hydrogen migration pathway; Interaction mechanism; Polystyrene

摘要：In this study, the co-pyrolysis of Xilinhot lignite (XL) and polystyrene (PS) was conducted to explore hydrogen transfer and redistribution behaviors. Results indicate that the co-pyrolysis yields more tar (12.97-23.01%) than expected (12.83-19.03%), with a more pronounced synergistic effect observed as PS ratio increases. Moreover, the tars of X-S5 and X-S10 exhibit significantly elevated contents of n-hexane soluble fractions of 80.35% and 90.42%, surpassing the expected values of 77.78% and 78.72%, which indicates that the quality of tar during copyrolysis is improved. Additionally, the content of monocyclic aromatic hydrocarbons in the n-hexane soluble fraction of X-S10 tar (73.28%) is substantially higher than the expected value (54.73%). During the co-pyrolysis of XL/PS, the hydrogen transferred to char and water is lower than expected, whereas the ratio of hydrogen transferred to tar (23.92-38.31%) is higher than the theoretical values (23.80-34.62%), which suggests that the addition of PS in the co-pyrolysis process benefit the transfer of hydrogen from char and water to tar.