【摘要】 运用Aspen Plus的RadFrac精馏模块,选择NRTL活度系数方程和Hayden-O’connell逸度系数方程的热力学模型对醋酸-丁烯醛-水体系共沸精馏分离醋酸-丁烯醛进行了模拟计算,计算值与现场实测值吻合。分析了原料进料位置、共沸剂进料位置、回流比、进料比等参数变化对醋酸-丁烯醛-水体系共沸精馏分离效果与能耗的影响,并进行了参数优化。结果表明,原工艺经参数优化后,可较大程度降低能耗,同时提高分离效果。更多还原

【Abstract】 Using the RadFrac rectification modules of Aspen Plus,thermodynamic models of NRTL equation for activity coefficient and Hayden-O’Connell equation for fugacity coefficient are chosen to simulate and optimize the azeotrope distillation(HAC-CROTO-H2O) for separating acetate from butenal.The influences of operation parameters,such as feed stage,azeotropic stage,reflux ratio,ratio of azeotropic to feed,on the separation efficiency and energy consumption of azeotropic distillation are investigated.The results show that,the optimization of original process can greatly reduce energy consumption and improve separation efficiency at the same time.更多还原