变压精馏分离乙腈-异丙醇共沸物的研究

Research of Separation of Acetonitrile-Isopropanol Azeotrope by Pressure Swing Distillation

本文采用化工过程模拟软件Aspen Plus对乙腈-异丙醇混合物分离工艺进行了模拟与优化,物性方法选用WILSON方程。以产品纯度和再沸器热负荷为目标变量,对各项操作变量如理论塔板数、进料位置以及回流比进行了优化。在最佳工艺条件下,最终产品异丙醇的质量纯度为99.9%,乙腈的质量纯度为99.9%。

In this paper,the separation of acetonitrile-isopropanol mixture was simulated and optimized by Aspen Plus.The physical method was WILSON.The optimum process parameters,such as the theoretical tray number,feed positon and reflux ratio,were determined by sensitivity analysis.Under these conditions,the mass fractions of isopropanol and acetonitrile both reached 99.9 %.