废办公用纸与高密度聚乙烯共热解：产物分布、动力学及反应机理

IF 5.6 2区工程技术 Q2 ENERGY & FUELS

Journal of The Energy Institute Pub Date : 2025-04-17 DOI:10.1016/j.joei.2025.102105

Chunxiang Yang , Chengyu Li , Huiyu Liu , Rui Shan , Jun Zhang , Haoran Yuan

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引用次数: 0

摘要

本研究调查了办公废纸（WP）和高密度聚乙烯（HDPE）在共热解过程中的热行为和动力学。HDPE 和 WP 的共热解表现出显著的协同效应，其特点是活化能降低、产物分布优化和脂肪族碳氢化合物产量增加。具体而言，与单独热解相比，当高密度聚乙烯与可湿性粉末的质量比为 1:2 时，协同热解的活化能最多可降低 20.2%。可湿性粉末的酸预处理和碱预处理进一步改善了共热解产物的分布，其中酸预处理可有效去除半纤维素和木质素，并促进短链脂肪烃（C ≤ 10）的形成。相比之下，碱预处理有利于生成长链脂肪烃（C > 20）。研究还详细提出了可湿性粉末与高密度聚乙烯共热解转化的合理反应机理。该研究为办公废纸与高密度聚乙烯的协同处置提供了理论支持和技术指导，并为生物质与废塑料协同热解转化的工业应用提供了启示。

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Co-pyrolysis of waste office paper and high-density polyethylene: product distribution, kinetics and reaction mechanism

This study investigated the thermal behaviors and kinetics of waste office paper (WP) and high-density polyethylene (HDPE) during co-pyrolysis. The co-pyrolysis of HDPE and WP exhibited significant synergistic effects, characterized by reduced activation energy, optimized product distribution, and increased yield of aliphatic hydrocarbons. Specifically, the activation energy for co-pyrolysis was reduced by up to 20.2 % at a HDPE-to-WP mass ratio of 1:2, in comparison with that of individual pyrolysis. Acid and alkali pretreatments of WP further improved the co-pyrolysis product distribution, where acid pretreatment effectively removed hemicellulose and lignin and promoted the formation of short-chain aliphatic hydrocarbons (C ≤ 10). In comparison, the alkali pretreatment facilitated the generation of long-chain aliphatic hydrocarbons (C > 20). The plausible reaction mechanism for co-pyrolysis transformation of WP with HDPE was also proposed in detail. This study provides theoretical support and technical guidance for the co-disposal of waste office paper and HDPE, and offers insights for the industrial application of co-pyrolysis transformation of biomass with waste plastics.

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来源期刊

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.