基于Aspen Plus用户模型的MTBE反应精馏模拟

Simulation of reactive distillation process for production of MTBE by developing user's module on Aspen Plus platform

采用用户模型技术,运用Fortran语言编写反应动力学子程序,并将其嵌入Aspen Plus精馏过程中,从而在Aspen Plus平台实现了MTBE反应精馏过程的动力学模拟,结果表明,所建用户模型MrBE反应精馏塔内温度、液相组成分布模拟值较好地吻合了文献值。以MTBE收率及纯度作为目标函数,研究了精馏塔相关参数改变对目标函数的影响,得到的优化条件分别如下:操作压力为1100 kPa,回流比为6,甲醇进料位置为第10块板,反应段塔板数为8块,此时MTBE收率为95.53%,纯度为99.2%。

A user model based on Aspen Plus platform by using of FORTRAN language is adopted as a partner for simulating the MTBE reactive process through a written kinetic subroutine. The results show fair agreements between the calculated and paper＇s value in the field of reactive distillation column with its temperature and liquid components profiles. The influence of some parameters＇ change on the MTBE yield and purity is explored, and the optimum conditions are obtained as follows： the operation pressure of 1100 kPa, the reflux ratio of 6, the methanol feed location of 10 from the cooler, the reactive tray section number of 8. Moreover, the MTBE yield and purity reach 95.53 % and 99.2 %, respectively.