论文部分内容阅读
为进一步验证间歇式反应系统的参数敏感性,预测热失控临界值,以硫酸催化乙酸酐水解反应作为研究对象,考察不同反应初始温度及反应初始浓度下反应温度的变化特性。采用基于雅克比矩阵迹的热失控临界判据,模拟计算硫酸催化乙酸酐水解反应系统参数敏感临界值。结果表明:反应温度对反应初始温度和初始浓度都有参数敏感性,当初始温度和初始浓度位于参数敏感临界值附近时,其微小变化将会引起温度急剧变化;用基于雅克比矩阵迹的判据预测反应系统热失控临界参数,临界判据计算的临界值与试验结果能很好地吻合。
In order to further verify the parameter sensitivity of intermittent reaction system and predict the critical value of thermal runaway, the change of reaction temperature under different reaction initial temperature and reaction initial concentration was investigated using sulfuric acid as catalyst for acetic anhydride hydrolysis. Based on the critical criterion of thermal runaway based on the Jacobian matrix trace, the sensitivity threshold of sulfuric acid catalyzed acetic anhydride hydrolysis reaction system was simulated. The results show that the reaction temperature has parameter sensitivity to the initial temperature and the initial concentration of the reaction. When the initial temperature and the initial concentration are near the sensitive threshold of the parameter, the small change will cause the temperature to change drastically. With the judgment based on the Jacobian matrix According to predicting the critical parameters of the thermal runaway of the reaction system, the critical value calculated by the critical criterion can be well fitted with the experimental results.