%0 Journal Article
%T 环己烷氧化生产环己酮过程建模与参数分析<br>Process modeling and analysis of the parameters for oxidation of cyclohexane into cyclohexanone
%A 李秀喜
%A 曹丽琦
%A 王兴
%J 清华大学学报（自然科学版）
%D 2018
%R 10.16511/j.cnki.qhdxxb.2018.25.027
%X 环己烷无催化氧化生产环己酮是一个高危工艺，当尾氧体积分数到达一定限度会发生爆炸，分析尾氧体积分数随关键参数的变化对企业的安全生产有重要意义。该文针对工艺中的反应器建立了数学过程模型，考虑了不同操作参数下传质和水力学及环己烷挥发对反应过程的影响，同时建立了反应动力学及物料平衡模型。模拟结果和实际生产数据能较好地相符。结果表明：当气相氧气体积分数达到28%，进气量为6 750 Nm3·h-1时，尾氧体积分数会增加到3%，引发爆炸。确定反应温度、进料氧气体积分数、气相进料量为反应过程中的敏感参数，为环己酮的安全生产提供理论和控制依据。<br>Abstract：Uncatalysed oxidation of cyclohexane into cyclohexanone is dangerous since the process will explode when the tail oxygen volume fraction reaches a critical limit. Thus, the tail oxygen volume fraction needs to be well characterized for various operating parameters for safe production. A mathematical model of the reaction is given here as a function of the mass transfer rate, hydraulics and cyclohexane volatilization. The reaction kinetics and material balance model are also given. Simulations are then in good agreement with actual production data. The results show that when the gas phase oxygen volume fraction is 28% and the feed gas flow rate is 6 750 Nm3·h-1, the oxygen tail gas volume fraction increases to 3%, which will cause an explosion. The reaction temperature, the gas phase oxygen volume fraction and the feed gas flow rate are the most sensitive parameters in the reaction process, with the model providing a theoretical basis for controlling safe production of cyclohexanone.
%K 生产安全技术
%K 环己烷氧化
%K 过程模拟
%K 参数分析
%K &lt
%K br&gt
%K production safety
%K cyclohexane oxidation
%K process simulation
%K parameter analytic
%U http://jst.tsinghuajournals.com/CN/Y2018/V58/I5/523