Towards enhanced monocyclic aromatic hydrocarbons production from Co-pyrolysis of biomass and waste polystyrene plastic

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS Journal of The Energy Institute Pub Date : 2024-08-30 DOI:10.1016/j.joei.2024.101812
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Abstract

Co-pyrolysis technology offers a viable solution for utilizing biomass and waste plastics as a valuable energy resource, to support waste management, energy supply and environmental protection. In this paper, co-pyrolysis of poplar tree (PT) and polystyrene (PS) at mixture ratios of 0:1, 3:1, 2:1, 1:1, 1:2, 1:3 and 1:0 under different pyrolysis temperatures (450, 550, 650, and 700 °C), using different catalysts (HZSM-5, MCM-41, Fe/HZSM-5, and Cu/HZSM-5) were investigated using gas chromatography/mass spectrometry (Py-GC/MS) diagnostics for determining products distribution and synergistic effects. The results showed that PT performed best at a pyrolysis temperature of 650 °C, whereas PS performed best at 550 °C. The relative amount of aromatics in the co-pyrolysis products of PT and PS was highest at 550 °C that showed positive synergistic effects. The synergistic effects from the co-pyrolysis of PT and PS were significantly different at different mixture ratios of the PT and PS feedstocks. At mixture ratios of 1:1 and 1:2, the relative amounts of polycyclic aromatic hydrocarbons (PAHs) and monocyclic aromatic hydrocarbons (MAH) were higher and showed positive synergistic effects. The catalysts promoted the generation of MAH and inhibited the PAHs formation in the co-pyrolysis. The Fe/HZSM-5 catalyst provided the most significant effect on MAH showing the highest relative amounts. The results showed that highest yield of monocyclic aromatic hydrocarbons can be achieved from the pyrolysis of PT and PS materials at 1:1 mixture ratio using Fe/HZSM-5 catalyst, at a reaction temperature of 550 °C.

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提高生物质与废聚苯乙烯塑料共热解生产单环芳烃的能力
共热解技术为利用生物质和废塑料作为宝贵的能源资源提供了可行的解决方案,有助于废物管理、能源供应和环境保护。在不同的热解温度(450、550、650 和 700 °C)下,使用不同的催化剂(HZSM-5、MCM-41、Fe/HZSM-5 和 Cu/HZSM-5),采用气相色谱/质谱分析法(Py-GC/MS)对聚苯乙烯和聚苯乙烯(PS)进行了研究,以确定产物分布和协同效应。结果表明,PT 在高温分解温度为 650 °C 时性能最佳,而 PS 在高温分解温度为 550 °C 时性能最佳。在 550 °C 时,PT 和 PS 共同热解产物中芳烃的相对含量最高,显示出积极的协同效应。在 PT 和 PS 原料的不同混合比例下,PT 和 PS 共热解的协同效应有显著差异。当混合比为 1:1 和 1:2 时,多环芳烃(PAHs)和单环芳烃(MAH)的相对含量较高,显示出积极的协同效应。催化剂在共热解过程中促进了 MAH 的生成,抑制了 PAHs 的形成。其中,Fe/HZSM-5 催化剂对 MAH 的影响最为显著,相对含量最高。结果表明,使用 Fe/HZSM-5 催化剂以 1:1 的混合比例热解 PT 和 PS 材料,在 550 °C 的反应温度下可获得最高产量的单环芳烃。
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来源期刊
Journal of The Energy Institute
Journal of The Energy Institute 工程技术-能源与燃料
CiteScore
10.60
自引率
5.30%
发文量
166
审稿时长
16 days
期刊介绍: The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.
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