低碳化学与化工2025，Vol.50Issue(8)：54-66,13.DOI:10.12434/j.issn.2097-2547.20250004
赣南脐橙皮热解过程的机理研究及能源转化特性分析
Mechanism study of pyrolysis process and characteristics analysis of energy conversion of Gannan navel orange peel
摘要
Abstract
Gannan navel orange peel is a typical agricultural and forestry waste,and its resource utilization and harmless disposal are of significant importance for environmental protection and sustainable development.By thermogravimetric analysis and fixed-bed pyrolysis experiment,the effects of heating rate,pyrolysis temperature and reaction time on the pyrolysis performance of Gannan navel orange peel were systematically explored.The kinetic and thermodynamic parameters of Gannan navel orange peel pyrolysis were obtained by Kissinger-Akahira-Sunose(KAS),Ozawa-Flynn-Wall(OFW)and Friedman(FM)models.Additionally,SEM was used to characterize the morphology of pyrolysis biochar,and the pyrolysis gas and liquid products were analyzed by GC and GC-MS,respectively.The thermogravimetric results indicate that Gannan navel orange peel pyrolysis primarily occurs from 150℃to 400℃.The higher heating rate leads to thermal lag in the pyrolysis process,which reduces the reaction efficiency.The kinetic results show that as the Gannan navel orange peel conversion rate increases,the activation energy(Ea)increases.The thermodynamic results show that as the heating rate increases,the enthalpy change(ΔH)and entropy change(ΔS)decrease,and Gibbs free energy change(ΔG)increases,making the reaction less favorable.The fixed-bed pyrolysis experiment results show that the optimal pyrolysis conditions were reaction temperature of 500℃,heating rate of 10℃/min and reaction time of 1.0 h.At this time,the yields of pyrolysis gas,pyrolysis liquid and biochar are 26.81%,47.27%and 25.91%,respectively.The pyrolysis gas mainly includes H2,CO,and CO2,and the pyrolysis liquid mainly includes aldehydes and phenolic compounds,and the biochar surface exhibits a large number of irregular pores.Overall,Gannan navel orange peel has high potential for energy conversion,providing a theoretical basis for its resource utilization.关键词
赣南脐橙皮/热解/动力学/热力学/生物质Key words
Gannan navel orange peel/pyrolysis/kinetics/thermodynamics/biomass分类
能源科技引用本文复制引用
李立清,杜林峰,薛茹萍,余思彤,郭燚,刘水英,曾志荣,欧阳少波,邓涛,王全兵..赣南脐橙皮热解过程的机理研究及能源转化特性分析[J].低碳化学与化工,2025,50(8):54-66,13.基金项目
江西省自然科学基金(2020BAB214021) （2020BAB214021）
江西省大学生创新创业训练计划(S202410407066) （S202410407066）
江西省研究生创新专项(YC2024-S546) （YC2024-S546）
香港大学教育资助委员会的院校发展计划(IDS)(UGC/IDS(R)25/20) （IDS）
江西省高层次领军人才(2022). （2022）
