基于集总模型的连续重整装置芳烃组分模拟计算

Simulation calculation of aromatic components in continuous reforming unit based on lumped model

为了更加简单准确地计算连续重整工艺的芳烃产率,提出了一种新的16集总反应动力学网络模型。首先,依据集总理论思想构建16集总反应动力学模型,依据物质守恒和能量守恒构建反应装置的数学模型;其次采用四阶龙格-库塔法,对所需化合物的物性及参数进行优化估计,估计出的参数用于动力学和反应器模型的计算;然后,编写涵盖16集总反应动力学网络模型的用户操作模块子程序;最后在ASPEN PLUS平台上进行流程模拟预测芳烃产品。最终得到芳烃产品较为精确的产品分布,证明所提出的集总在预测芳烃上具有良好效果。

In order to simpler and more accurate calculate the aromatics yield of catalytic reforming device,this paper proposes a new 16 lumped kinetic model.First of all,based on the theory of lumped thought a new 16 lumped kinetic reaction rate model is set up. According to the material conservation and energy conservation,the mathematical model of the reactor is build. Secondly,using the fourth-order Runge-Kutta method,the physical properties of the compound and the parameter optimization estimation.The estimated parameters are used in the calculation of kinetics model and reactor model;Then, writing covers 16 lumping kinetic model of user operation module subroutine;Finally,simulation and prediction the yield of the aromatics by through the ASPEN PLUS platform.It turned out the proposed lumped has good effect on forecasting aromatics.