C_(8)芳烃异构化径向床反应器模型

RADIAL BED REACTOR MODEL FOR ISOMERIZATION OF C_(8) AROMATICS

针对C_(8)芳烃异构化反应,采用六组分反应网络建立了工业C_(8)芳烃异构化径向床反应器模型;并基于工业实际运行数据,采用模拟退火算法对C_(8)芳烃异构化反应的速率常数进行了回归计算,进而得到了可逆反应网络和不可逆反应网络中各组分的浓度分布。结果表明:反应器模型计算值与工业实际值吻合,相对误差较小;与不可逆反应网络相比,可逆反应网络更接近实际工业生产过程。基于可逆反应网络模型计算了空速对反应结果的影响,发现空速较低会导致副产物增加,空速较高则会导致产物PX减少。

A radial bed reactor model for the isomerization of C_(8)aromatics was developed by applying a six-component sequential reaction network.Based on industrial data,the simulated annealing algorithm was used to fit the reaction rate constants of the reaction network,and the concentration distributions of all components could be obtained for reversible and irreversible reaction networks.The results showed that the calculated values of the model fit the industrial data very well,and the relative error was small.By comparing the concentration distribution data of the two reaction networks,the reversible reaction network was closer to the real industrial process.Based on reversible reaction network model,the effect of space velocity on reaction results was calculated.It was found that the lower space velocity could lead to increase of by-products,and the higher space velocity could lead to decrease of PX.