环己酮 oxime 的 Beckmann 机制,基于自我催化的反应和多型性的特征被建议。根据建议机制,当 SO_3 充当脱水剂时,基本途径是 OXH~+ 的重新整理, OXSO_3 能最终转到 CPLSO_3。就在 OXSO_3and CPLH~+ 之间的自我催化的反应而言,为 Beckmann 的运动模型被建立。相应参数被使用基因算法(GA ) 和模拟结果在 -19.3 ℃下面与试验性的数据同意很好的漂流估计。工业设备被模仿并且分析。象到 oxime 的硫磺的酸的臼齿的比率和剩余 oxime 上的发行量比率那样的关键过程参数的效果也被讨论。己内酰胺在发烟硫酸和硫磺的酸的最小的分子的比率最后作为 CPLH~+ 存在到 oxime 的结果表演能理论上是 0.5。
Beckmann rearrangement mechanism of cyclohexanone oxime, based on the characteristic of self-catalyzed reaction and polymorphism was proposed. According to the suggested mechanism, the basic approach was the rearrangement of OXH^+ while the SO3 acts as dehydrating agent and OXSO3 can turn to CPLSO3 ultimately. Considering self-catalyzed reaction between OXSO3 and CPLH^+ , kinetic model for Beckmann rearrangement was established. Corresponding parameters were estimated by using float genetic algorithm (GA) and simulation results agree well with the experimental data below -19.3 ℃. Industrial equipment was simulated and analyzed. Effects of key process parameters such as molar ratio of sulfuric acid to oxime and circulation ratio on the residual oxime are also discussed. The results show that the caprolactam exists as CPLH^+ finally in oleum and the minimum molecular ratio of sulfuric acid to oxime can be 0.5 theoretically.