Design and control of a middle-vessel batch distillation for separating DMC–EMC–DEC mixture  

作　　者：Minyan Zhu Yafei Hou Na Yu Mengqi Chen Zhanhua Ma Lanyi Sun 

机构地区：[1]State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China)

出　　处：《Chinese Journal of Chemical Engineering》2018年第9期1837-1844,共8页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(21676299,21476261,21506255)

摘　　要：In this paper, the mixture of dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate was separated by middle-vessel batch distillation with feeding in middle-vessel and process control characteristics were researched. The steady state simulation results in Aspen Plus were exported to Aspen Dynamics. Then control effect of liquid level control with HighSelector, composition control(structure1, structure2) and temperature control(proportional action, proportional integration action) were proposed. Composition control structure 2 and temperature control with PI action were investigated to achieve a good control effect.In this paper, the mixture of dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate was separated by middle-vessel batch distillation with feeding in middle-vessel and process control characteristics were researched. The steady state simulation results in Aspen Plus were exported to Aspen Dynamics. Then control effect of liquid level control with HighSelector, composition control（structure1, structure2） and temperature control（proportional action, proportional integration action） were proposed. Composition control structure 2 and temperature control with PI action were investigated to achieve a good control effect.

关 键 词：Middle-vessel batch distillation Ternary mixture Aspen Dynamics Process control 

分 类 号：TQ225.52[化学工程—有机化工] TQ028.31