硝酸钠-沥青固化物热化学动力学研究

A STUDY ON THE THERMAL CHEMICAL KINETICS OF SODIUM NITRATE-BITUMINIZED WASTE SYSTEM

摘要: 本文利用热分析装置以及TG-DSC示差扫描量热天平和气相色谱分析,作出硝酸钠体系沥青固化物从190℃至270℃以前的一系列热化学动力学曲线。从而得出热反应开始所需要的诱导时间与温度的对应曲线,写出数学表达式。并得出了反映发热速率(((?)ΔT)/((?)t))_T的经验公式。根据热反应释放的气体成份定量分析结果以及它们与发热速率q的对应关系,进行了一些热反应机理的讨论。对于固化物内各种因素对诱导时间及发热速率的影响作了一些定性实验和解释。

Abstract: A series of the thermal chemical kinetic curves of sodium nitrate-bituminized waste system were obtained by means of thermal analysis equipments assembled by the authers, TG-DSC(Thermogravimetric-differential scanning calorimetric analyzer) and gas chromatography at 190

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