Synergistic effect of co-pyrolysis between Naomaohu coal and waste plastics

IF 5.8 2区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Analytical and Applied Pyrolysis Pub Date : 2024-09-16 DOI:10.1016/j.jaap.2024.106762

Jiale Duan, Kechao Wang, Yuxin Wen, Rui Zhang, Lijun Jin, Haoquan Hu

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引用次数: 0

Abstract

Understanding the synergistic effect of co-pyrolysis between coal and different plastics is very important to reveal the matching between coal and waste plastics, and the influence of plastics with different structures and properties on the synergistic effect can be recognized based on the composition and distribution of co-pyrolysis products. In this study, the co-pyrolysis of low-rank Naomaohu coal (NMH) with thermoplastic polyethylene (PE), polypropylene (PP), polystyrene (PS), and thermosetting phenol-formaldehyde resin (PF) were carried out in a fixed-bed reactor to investigate the synergistic effect of co-pyrolysis between NMH with different plastics. The results showed that the product distribution of NMH co-pyrolysis with different thermoplastics are similar, showing the highest tar yield, while co-pyrolysis with thermoset PF showed the highest solid yield. The addition of PE and PF to NMH had a positive synergistic effect on the tar yield, with an added value of 3.2 wt% and 2.9 wt%, respectively, which was related to the large overlap interval of the weight-loss temperatures of NMH with PE and PF as exhibited by the TG results. In addition, the co-pyrolysis of NMH with polyolefin plastics PE and PP increased the content of aliphatic hydrocarbons such as alkanes and alkenes in the tar, while the co-pyrolysis with polyaromatic plastics PS and PF significantly increased the aromatic compounds such as aromatics and phenols of the tar. Therefore, suitable plastics can be selected for co-pyrolysis with coal to improve tar yield and tar quality.

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直茂湖煤与废塑料共热解的协同效应

了解煤与不同塑料共热解的协同效应对于揭示煤与废塑料的匹配关系非常重要，根据共热解产物的组成和分布可以认识到不同结构和性质的塑料对协同效应的影响。本研究在固定床反应器中进行了低阶直茂湖煤 (NMH) 与热塑性聚乙烯 (PE)、聚丙烯 (PP)、聚苯乙烯 (PS) 和热固性酚醛树脂 (PF) 的共热解，以研究 NMH 与不同塑料共热解的协同效应。结果表明，NMH 与不同热塑性塑料共热解的产物分布相似，焦油产率最高，而与热固性 PF 共热解的固体产率最高。在 NMH 中添加 PE 和 PF 对焦油产率有积极的协同效应，添加值分别为 3.2 wt% 和 2.9 wt%，这与 TG 结果显示的 NMH 与 PE 和 PF 的失重温度有较大的重叠区间有关。此外，NMH 与聚烯烃塑料 PE 和 PP 的共热解增加了焦油中烷烃和烯烃等脂肪烃的含量，而与聚芳烃塑料 PS 和 PF 的共热解则显著增加了焦油中芳烃和酚等芳香族化合物的含量。因此，可以选择合适的塑料与煤进行共热解，以提高焦油产量和焦油质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Analytical and Applied Pyrolysis 化学-分析化学

CiteScore

9.10

自引率

11.70%

发文量

340

审稿时长

44 days

期刊介绍： The Journal of Analytical and Applied Pyrolysis (JAAP) is devoted to the publication of papers dealing with innovative applications of pyrolysis processes, the characterization of products related to pyrolysis reactions, and investigations of reaction mechanism. To be considered by JAAP, a manuscript should present significant progress in these topics. The novelty must be satisfactorily argued in the cover letter. A manuscript with a cover letter to the editor not addressing the novelty is likely to be rejected without review.