Abstract The objective of this research was to study the combustion kinetics of heavy tar from continuous pyrolysis of camellia shell. TG-DSC was used for combustion study with heating rates of 10, 20, and 30 °C/min, temperatures from 26 to 800 °C, and air flowrate of 100 mL/min. Results showed that the combustion process, with three stages, includes low-boiling components volatilization, light components decomposition and combustion, and heavy components and char combustion. The correlation among heating rate, maximum mass loss rate and mass loss ratio and the combustion behaviors at each stage with different heating rates were analyzed. The activation energy and frequency factor of each stage were obtained by Friedman and Ozawa methods. The reaction mechanisms are the random nucleation and growth, and the kinetic parameters were obtained by fitting experiment data with theoretical models. The mechanisms and kinetic parameters obtained could be used to describe the heavy tar combustion.

中文翻译：

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油茶壳连续热解重焦油燃烧特性及动力学分析

摘要 本研究的目的是研究山茶壳连续热解重焦油的燃烧动力学。TG-DSC 用于燃烧研究，加热速率为 10、20 和 30 °C/min，温度为 26 至 800 °C，空气流速为 100 mL/min。结果表明，燃烧过程分为低沸点组分挥发、轻组分分解燃烧和重组分焦炭燃烧三个阶段。分析了升温速率、最大质量损失率和质量损失比与不同升温速率下各阶段燃烧行为的相关性。各阶段的活化能和频率因子通过 Friedman 和 Ozawa 方法获得。反应机制是随机成核和生长，动力学参数通过实验数据与理论模型拟合得到。获得的机理和动力学参数可用于描述重焦油燃烧。