Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation

›› 2011, Vol. 19 ›› Issue (4): 598-602.

Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation

姜占坤^1,2, 白鹏^1,2

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, China

收稿日期:2011-01-24 修回日期:2011-05-25 出版日期:2011-08-28 发布日期:2011-08-28
通讯作者: BAI Peng,E-mail:bp2008@eyou.com

Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation

JIANG Zhankun^1,2, BAI Peng^1,2

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Key Laboratory of Systems Bioengineering, Ministry of Education, Tianjin University, Tianjin 300072, China

Received:2011-01-24 Revised:2011-05-25 Online:2011-08-28 Published:2011-08-28

摘要/Abstract

摘要： The total withdrawal operation is an inevitable section in cyclic total reflux batch distillation.In the operation, an interesting phenomenon "overhead concentration platform"(OCP) appears, which is defined as a period of time with high overhead concentrations when the operation is changed from total reflux to total withdrawal.The OCP phenomenon and its influential factors, such as the theoretical stage number, feed concentration, and feed composition, are examined by simulations and experiments.The experimental equipment is a column with random packings.It is shown that the number of theoretical stages influences the OCP more significantly than the other factors.

关键词: batch distillation, cyclic total reflux, total withdrawal, overhead concentration platform

Abstract: The total withdrawal operation is an inevitable section in cyclic total reflux batch distillation.In the operation, an interesting phenomenon "overhead concentration platform"(OCP) appears, which is defined as a period of time with high overhead concentrations when the operation is changed from total reflux to total withdrawal.The OCP phenomenon and its influential factors, such as the theoretical stage number, feed concentration, and feed composition, are examined by simulations and experiments.The experimental equipment is a column with random packings.It is shown that the number of theoretical stages influences the OCP more significantly than the other factors.

Key words: batch distillation, cyclic total reflux, total withdrawal, overhead concentration platform

姜占坤, 白鹏. Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation[J]. , 2011, 19(4): 598-602.

JIANG Zhankun, BAI Peng. Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation[J]. , 2011, 19(4): 598-602.

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Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation

Overhead Concentration Platform of Total Withdrawal Operation in Cyclic Total Reflux Batch Distillation

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