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IF 9 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-03-18 DOI:10.1016/j.renene.2025.122923

Zhen He , Quanwei Lv , Xia Jiang , Yang Su , Guangmei Cao , Xianggang Zhang , Lingling Xie , Haijun Wu

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引用次数: 0

摘要

秸秆和聚乙烯（PE）共同热解可通过减少含氧化合物和增加碳氢化合物来提高热解油的质量。然而，人们对秸秆的主要成分（纤维素、半纤维素和木质素）与聚乙烯之间的协同机制还不甚了解。本研究对这些相互作用进行了调查，发现了一个两阶段反应：纤维素和半纤维素主导第一阶段，而聚乙烯和木质素主导第二阶段。秸秆和聚乙烯在 550 °C的共热解过程中产生了显著的协同效应，使烷烃至少增加了 17.84%，含氧化合物减少。聚乙烯中的自由基促进了羰基键的裂解和脱氧，从而产生了更多的碳氢化合物。半纤维素抑制了酯的转化（ΔVesters = -3.00%），而木质素则抑制了酮和醇的形成（ΔVketones = -12.14%，ΔValcohols = -1.07%）。这些发现与秸秆-聚乙烯共热解的结果一致，为了解木质纤维素生物质与塑料之间的协同机制提供了新的视角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Understanding the synergistic mechanisms of co-pyrolysis of straw and polyethylene for high-quality pyrolysis oil

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Understanding the synergistic mechanisms of co-pyrolysis of straw and polyethylene for high-quality pyrolysis oil

The co-pyrolysis of straw and polyethylene (PE) enhances pyrolysis oil quality by reducing oxygenated compounds and increasing hydrocarbons. However, the synergistic mechanisms between straw's main components (cellulose, hemicellulose, and lignin) and PE are not well understood. This study investigated these interactions, revealing a two-stage reaction: cellulose and hemicellulose dominate the first stage, while PE and lignin dominate the second. Significant synergistic effects were observed at 550 °C during the co-pyrolysis of straw and PE, resulting in at least a 17.84 % increase in alkanes and a decrease in oxygenated compounds. Free radicals from PE facilitated the cleavage of carbonyl bonds and promoted deoxygenation, leading to more hydrocarbons. Hemicellulose inhibited ester conversion (ΔV_esters = −3.00 %), while lignin suppressed ketone and alcohol formation (ΔV_ketones = −12.14 %, ΔV_alcohols = −1.07 %). These findings align with straw-PE co-pyrolysis results, providing new insights into the synergistic mechanisms between lignocellulosic biomass and plastics.

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.