利用Aspen Plus模拟工业MTBE装置

Simulation of industrial MTBE unit on Aspen Plus platform

MTBE(甲基叔丁基醚)是一种提高汽油辛烷值的添加剂和化工原料。工业上要提高MTBE产量、减少装置能耗,就需要探索最优的操作条件。文中运用Fortran语言编写反应动力学程序,并嵌入Aspen Plus中来模拟复杂的工业MTBE装置,模拟结果与工业装置较好吻合。通过模拟结果分析了反应精馏塔的温度、组成分布和MTBE生成速率,同时考察改变工艺参数对产品MTBE纯度和异丁烯转化率的影响。优化后MTBE产品质量分数高达98.5%,异丁烯转化率为99.7%。

Methyl Tert-butyl Ether（ MTBE） is an important chemical used as an octane booster in gasoline.Maximum production of the MTBE and Minimum energy consumption can be achieved by exploring the operating conditions. The reactive distillation process in MTBE unit was simulated on Aspen Plus platform,a user kinetic subroutine programmed by Fortran was incorporated into this simulation allowing the design and optimization of the reactive distillation process. The results obtained from the simulation are in good agreements with the operating date of industrial plant. The temperature,liquid composition and reaction-rate profiles within the reactive distillation column were presented and the influence of these parameters on MTBE product purity and isobutylene conversion were discussed. The result show that the concentration of 98. 5% in MTBE product can be reached and the isobutylene conversion can be up to 99. 7%.