变压精馏分离1,1,1,3,3-五氟丙烷-氟化氢的工艺模拟  

Simulation of the separation process for 1,1,1,3,3-pentafluoropropane-hydrogen fluoride mixture

作　　者：曾纪珺[1] 张伟[1] 杨志强[1] 郝妙莉[2] 郝志军[1] 徐强[1] 吕剑[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]西安交通大学能动学院,陕西西安710049

出　　处：《应用化工》2009年第6期809-812,共4页Applied Chemical Industry

基　　金：陕西省"13115"科技创新工程重大科技专项项目(2007ZDKG-40)

摘　　要：1,1,1,3,3-五氟丙烷-氟化氢混合物是一种二元最低共沸物。在计算机模拟和分析的基础上,研究了变压精馏分离五氟丙烷-氟化氢的工艺流程。选用Aspen P lus软件内置的热力学模型W ILS-HF描述五氟丙烷-氟化氢二元共沸体系的气液平衡。根据实验数据,回归该热力学模型中的交互作用参数,模型的计算结果与实际数据吻合较好。使用Aspen P lus对整个分离流程进行模拟计算,以系统能耗最低为目标,对重要的工艺参数进行了优化,模拟结果对工业过程的设计具有一定的指导意义。The mixture of 1,1,1,3,3-pentafluoropropane （ HFC-245 fa） and hydrogen fluoride （HF） has a minimum axeotrope. In this paper, a process of pressure-swing distillation for separation of HFC-245fa and HF azeotrope was simulated by Aspen Plus. Binary interaction parameters of the WILS-HF model between HFC-245fa and HF were regressed against experimental data of vapor liquid equilibria of HFC- 245fa and HF. Based on the thermodynamic model, the separation flowsheet, including a high-pressure distillation column and a low-pressure distillation column in series, was simulated and analyzed by Aspen Plus. Important process parameters were optimized to minimize energy consumption. The simulation result can be used for the design of an industrial plant.

关 键 词：五氟丙烷-氟化氢-共沸物 变压精馏 流程模拟 ASPENPLUS 

分 类 号：TQ021.8[化学工程]