基于Aspen Plus变压精馏分离甲苯-正丁醇共沸物的研究  

Study on Separation of Toluene-n-Butanol Binary Azeotropic System with Pressure Swing Distillation by Aspen Plus

作　　者：霍月洋[1] HUO Yue-yang(Department of Chemistry and Biology,Dongchang College,Liaocheng University,Liaocheng,Shandong 252000,China)

机构地区：[1]聊城大学东昌学院化学与生物系,山东聊城252000

出　　处：《浙江化工》2020年第6期28-31,共4页Zhejiang Chemical Industry

基　　金：聊城大学东昌学院教研项目“化工流程模拟技术在化工原理课程各环节教学中的应用研究”(2018JGB02)。

摘　　要：针对甲苯-正丁醇二元共沸体系,采用Aspen Plus软件建立变压精馏分离工艺。物性方法选用NRTL方程,对低压塔和高压塔理论塔板数、回流比等主要参数进行模拟优化,确定了最佳工艺参数:低压塔回流比为0.6,理论塔板数为12;高压塔回流比为3,理论塔板数为30。该条件下最终产品正丁醇的纯度为99.8%,甲苯的纯度为99.6%。For the toluene-n-butanol binary azeotropic system,Aspen Plus software was used to establish a pressure swing distillation separation process.NRTL equation was used for the physical property method.The main parameters such as the number of theoretical plates and the reflux ratio of low-pressure tower and high-pressure tower were simulated and optimized.The optimum process parameters were determined.For the low-pressure tower,the reflux ratio was 0.6,the theoretical plate number was 12.For the high-pressure tower,the reflux ratio was 3.0,the theoretical plate number was 30.Under these conditions,the purity of n-butanol was 99.8%and the purity of toluene was 99.6%.

关 键 词：变压精馏 Aspen Plus 模拟优化 

分 类 号：TQ028.31[化学工程]