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借助Aspen模拟软件平台,对以环己酮、过氧化氢为原料,B2O3/γ-Al2O3固体酸两步催化合成ε-己内酯的产物体系的精馏分离工艺进行了模拟计算。在考虑各组分特性的基础上,采用UNIQ-NTH物性方法、RadFrac严格模型,分别对精馏塔的串联流程及并联流程进行了模拟计算。结果表明:并联流程优于串联流程,模拟计算结果能够满足工艺及产品的分离精度要求。通过对并联流程各精馏塔进行详细的模拟计算,得到了可为实际分离工艺设计和生产操作过程提供依据的数据。
The Aspen simulation software platform was used to simulate the rectification and separation process of the product system of ε-caprolactone catalyzed by B2O3 / γ-Al2O3 solid acid with cyclohexanone and hydrogen peroxide as raw materials. Based on the characteristics of each component, UNIQ-NTH physical property method and RadFrac rigorous model were used to simulate the series flow and the parallel flow of the rectification column respectively. The results show that the parallel process is better than the serial process, and the simulation results can meet the separation accuracy requirements of the process and the product. Through the detailed simulation calculation of each distillation column in parallel process, the data which can provide the basis for the actual separation process design and production operation are obtained.