As a self-reactive substance, benzaldehyde oxime (BO) is prone to a highly exothermic runaway reaction and thermal hazard analysis and the reaction kinetics calculation of BO have great significance. In this work, the decomposition products of BO in nitrogen atmosphere were identified by GC-MS and HPLC techniques. The impact of the decomposition products on the decomposition behaviors of BO were analyzed by comparison of the ARC test results of pure BO and mixture of BO and decomposition products. It was found that N-benzylidene benzylamine was the intermediate decomposition product and benzoic acid, benzamide, N-benzyl benzamide, and 2,4,5-triphenylimidazole were the final products of BO. A two-step continuous autocatalytic reaction model was established to depict the decomposition process of BO. The kinetic parameters of the model were calculated by applying the nonlinear optimization method. Finally, thermal behaviors under different process temperature were predicted based on the kinetic model, and the time to maximum rate (TMR_ad) was predicted as 112.04 °C under 24 h, and 122.19 °C of 8 h, which offer crucial safety information to optimize the safety conditions of BO during usage, storage and transportation, which minimizes the industrial disasters.

苯甲醛肟(BO)作为一种自反应物质，容易发生高放热失控反应，对BO的热危害分析和反应动力学计算具有重要意义。在这项工作中，BO 在氮气氛中的分解产物通过 GC-MS 和 HPLC 技术进行了鉴定。通过比较纯BO和BO与分解产物混合物的ARC测试结果，分析分解产物对BO分解行为的影响。发现N-亚苄基苄胺是BO的中间分解产物，苯甲酸、苯甲酰胺、N-苄基苯甲酰胺和2,4,5-三苯基咪唑是BO的最终产物。建立了两步连续自催化反应模型来描述BO的分解过程。采用非线性优化方法计算模型的动力学参数。最后，基于动力学模型和达到最大速率的时间（TMR）预测了不同工艺温度下的热行为_ad ) 在 24 小时内预测为 112.04 °C，在 8 小时内预测为 122.19 °C，这为优化 BO 在使用、储存和运输过程中的安全条件提供了关键的安全信息，从而最大限度地减少了工业灾难。