Multiphase Flow Simulation of New Vapor Distributor in Dividing Wall Column and Control Mechanism  

作　　者：Hu Yuqi Li Xiaoran Li Chunli 

机构地区：[1]National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization,School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130

出　　处：《China Petroleum Processing & Petrochemical Technology》2020年第3期109-118,共10页中国炼油与石油化工（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(21878066).

摘　　要：A new vapor distributor based on the Coanda effect is added to the Dividing Wall column(DWC),and the multiphase flow simulation is performed using ANSYS Fluent by this model.The results show that with the addition of the liquid phase,the new vapor distributor still follows the Coanda effect.Hereby,the vapor is ejected from the slits of the distributor to take away the surrounding vapor,and a negative pressure is formed under the distributor,so as to achieve the purpose of regulating Rv.Analogously to the working principle of vapor distributor,a certain amount of vapor is drawn out from a position of prefractionator,which is equivalent to the vapor ejected by the distributor.The same amount of vapor is fed into the main column,which corresponds to the gas phase at the inlet of the distributor.The Rv is adjusted by changing the speed of the input or output vapor.Simulation results show that adding this control mechanism on the basis of temperature or concentration control structure can better achieve the effect of vapor distribution.

关 键 词：Aspen Plus ANSYS fluent DWC simulation optimization control mechanism 

分 类 号：TQ053.5[化学工程]