The self-ignition temperature, the safe pile storage dimension and the activation energy of the rubber woodchip pile were determined by Frank-Kamenetskii approach. The woodchip samples with 278 kg/m and 458 kg/m of the bulk densities and 10.6% w.b. (wet basis) and 46.1% w.b. of the initial moisture contents were used. The samples were put into the cubic baskets with the widths of 8 cm, 10 cm, and 12 cm and placed in the well-ventilated oven. The results showed that the self-ignition temperatures were varied between 182 °C and 199 °C. The increase in the basket sizes decreased the self-ignition temperatures. The initial moisture content did not affect the self-ignition temperature. The dimension and shape of the rubber woodchip piles affect the self-ignition temperature. The size of the safe storage pile could be larger if the moisture content increased. The activation energy of the rubber woodchip ignition increased when the moisture content increased. The activation energies were 97.9 kJ/mol and 104.2 kJ/mol, for the moisture contents of 10.6% w.b. and 46.1% w.b., respectively.

中文翻译：

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泰国橡胶木片自燃

采用Frank-Kamenetskii方法测定了橡胶木片桩的自燃温度、安全堆存尺寸和活化能。使用堆积密度为 278 kg/m3 和 458 kg/m3、初始含水量为 10.6% wb（湿基）和 46.1% wb 的木片样品。将样品放入宽度为8cm、10cm、12cm的立方体篮中，并置于通风良好的烘箱中。结果表明，自燃温度在 182 °C 至 199 °C 之间变化。篮尺寸的增加降低了自燃温度。初始含水量不影响自燃温度。橡胶木片堆的尺寸和形状影响自燃温度。如果含水量增加，安全储存堆的尺寸可以更大。当含水量增加时，橡胶木片点火的活化能增加。当水分含量为 10.6% wb 和 46.1% wb 时，活化能分别为 97.9 kJ/mol 和 104.2 kJ/mol。