A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

›› 2010, Vol. 18 ›› Issue (4): 554-561.

A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

白鹏, 宋爽, 盛敏, 李晓峰

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

收稿日期:2009-10-23 修回日期:2010-03-29 出版日期:2010-08-28 发布日期:2010-08-28
通讯作者: SONG Shuang, E-mail:chengruoyu2@sina.com

A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

BAI Peng, SONG Shuang, SHENG Min, LI Xiaofeng

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2009-10-23 Revised:2010-03-29 Online:2010-08-28 Published:2010-08-28

摘要/Abstract

摘要： Cyclic total reflux (CTR) batch distillation is a promising mode of the process but lacking of appropriate modeling for the period of filling the reflux drum.A new dynamic modeling method for the simulation of CTR batch distillation is proposed in this work,in which the changes in column holdup and liquid flow rate during the filling of the drum,and the consequent change in valid number of theoretical plates are considered.The effect of drum holdup on operation time is investigated and the optimal drum holdup is obtained from the simulation.The dynamic modeling is compared to the conventional modeling without consideration of change in liquid flow rate. The experimental result shows that the present modeling is more reliable and more accurate,especially for the column with large liquid holdup.

关键词: batch distillation, cyclic total reflux, dynamic modeling, liquid holdup, reflux drum

Abstract: Cyclic total reflux (CTR) batch distillation is a promising mode of the process but lacking of appropriate modeling for the period of filling the reflux drum.A new dynamic modeling method for the simulation of CTR batch distillation is proposed in this work,in which the changes in column holdup and liquid flow rate during the filling of the drum,and the consequent change in valid number of theoretical plates are considered.The effect of drum holdup on operation time is investigated and the optimal drum holdup is obtained from the simulation.The dynamic modeling is compared to the conventional modeling without consideration of change in liquid flow rate. The experimental result shows that the present modeling is more reliable and more accurate,especially for the column with large liquid holdup.

Key words: batch distillation, cyclic total reflux, dynamic modeling, liquid holdup, reflux drum

白鹏, 宋爽, 盛敏, 李晓峰. A Dynamic Modeling For Cyclic Total Reflux Batch Distillation[J]. , 2010, 18(4): 554-561.

BAI Peng, SONG Shuang, SHENG Min, LI Xiaofeng. A Dynamic Modeling For Cyclic Total Reflux Batch Distillation[J]. , 2010, 18(4): 554-561.

参考文献

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A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

A Dynamic Modeling For Cyclic Total Reflux Batch Distillation

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