用Aspen Plus对反应精馏的模拟计算

以甲醇和醋酸的酯化反应为例,介绍了用Aspen Plus软件模拟计算反应精馏过程的方法。计算过程包括:(1)对反应精馏塔模型进行合理的简化;(2)选取合适的数学模型和热力学模型;(3)选取合适的参数。计算初步确定了最佳回流比,合理的甲醇过量程度,并通过灵敏度分析得出灵敏板的大概位置。本计算结果可作为反应精馏实验的基础。

The Simulation of Reactive Distillation Using Aspen Plus

The paper presents a simulation method of reactive distillation using Aspen Plus software, based on the esterification reaction of methanol and acetate acid. The simulation includes: 1.The reasonable simplification of reactive distillation tower; 2.Choosing suitable mathematical model and thermodynamic model; 2.Using appropriate parameters. Initiatorily, the calculation reaches some conclusions such as optimal reflux ratio and proper excess of methanol. The simulation also predicts the probable location of sensitive plate via sensitivity analysis. The following reactive distillation experiment can be based on the simulation results.