Abstract Non-isothermal thermogravimetry (TGA) is conducted at four heating rates to determine the kinetic parameters and oxidation reactivity. The ignition (Ti), peak (Tp) and burnout (Te) temperature and reactivity index S are calculated. Isoconversional method is adopted to determine the activation energy (Eα) and frequency factor (Aα). The rate constant (k(T)) is obtained by the kinetic parameters. The results show that S is strongly dependent on the TGA heating rate, while Ti, Tp and Te are independent of the heating rate. With the increase of pyrolysis temperature, Ti monotonically increases, while the reactivity evaluated at Tp, Te and k(T) ranks as char-1000

中文翻译：

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高温热解烟煤焦的氧化反应性和动力学分析：升温速率和热解温度的影响

摘要 非等温热重法 (TGA) 在四种加热速率下进行，以确定动力学参数和氧化反应性。计算着火 (Ti)、峰值 (Tp) 和燃尽 (Te) 温度和反应性指数 S。采用等转换法确定活化能（Eα）和频率因子（Aα）。速率常数 (k(T)) 由动力学参数获得。结果表明，S 强烈依赖于 TGA 加热速率，而 Ti、Tp 和 Te 与加热速率无关。随着热解温度的升高，Ti单调增加，而在Tp、Te和k(T)下评价的反应活性为char-1000