分批精馏过渡段放持液操作方式

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分批精馏过渡段放持液操作方式

张雪梅^a; 何杰^a; 张卫江^a; 张志刚^a; 简春贵^b; 杨志才^a

^a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
^b Tianjin Univtech Co. Ltd., Tianjin 300072, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-06-28 发布日期:2006-06-28
通讯作者: 张雪梅

The Operation of Draining Column Holdup for Slop Cut Withdrawal in Batch Distillation

ZHANGXuemei^a; HEJie^a;ZHANGWeijiang^a;ZHANGZhigang^a,JIANChungui^b; YANGZhicai^a

a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
b Tianjin Univtech Co. Ltd., Tianjin 300072, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-06-28 Published:2006-06-28
Contact: ZHANG Xuemei

摘要/Abstract

摘要： The new mode of operation for slop cut withdrawal in batch distillation, i.e., draining column liquid holdup at the end of slop cut period, was proposed. And the stopping criterion for the operation was investigated. Experiments were carried out with isopropanol-n-propanol binary system and isopropanol-n-propanol-n-butanol ternary system in a distillation column with a liquid collector installed between the reboiler and the column section. Experimental results in a 45mm batch column show that the proposed policy can overcome the flywheel effect caused by column liquid holdup and thus cut down operation time and energy consumption 31%—61%.

关键词: batch distillation;slop cut;mode of operation;column holdup

Abstract: The new mode of operation for slop cut withdrawal in batch distillation, i.e., draining column liquid holdup at the end of slop cut period, was proposed. And the stopping criterion for the operation was investigated. Experiments were carried out with isopropanol-n-propanol binary system and isopropanol-n-propanol-n-butanol ternary system in a distillation column with a liquid collector installed between the reboiler and the column section. Experimental results in a 45mm batch column show that the proposed policy can overcome the flywheel effect caused by column liquid holdup and thus cut down operation time and energy consumption 31%—61%.

Key words: batch distillation, slop cut, mode of operation, column holdup

张雪梅, 何杰, 张卫江, 张志刚, 简春贵, 杨志才. 分批精馏过渡段放持液操作方式[J]. CIESC Journal.

ZHANGXuemei, HEJie,ZHANGWeijiang,ZHANGZhigang,JIANChungui, YANGZhicai. The Operation of Draining Column Holdup for Slop Cut Withdrawal in Batch Distillation[J]. .

参考文献

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分批精馏过渡段放持液操作方式

The Operation of Draining Column Holdup for Slop Cut Withdrawal in Batch Distillation

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