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

分批精馏过渡段放持液操作方式

作　　者：张雪梅 何杰 张卫江 张志刚 简春贵 杨志才 

机构地区：[1]School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China [2]Tianjin Univtech Co. Ltd., Tianjin 300072, China

出　　处：《Chinese Journal of Chemical Engineering》2006年第3期337-342,共6页中国化学工程学报（英文版）

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 carded 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 Ф 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%.为在分批蒸馏的废馏分退却的操作的新模式，即，在废馏分时期的结束排干列液体劫盗，被建议。并且为操作的停止的标准被调查。实验在蒸馏柱与 isopropanol-n-propanol 二元体系和 isopropanol-n-propanol-n-butanol 三元体系被执行，一个液体收集者在 reboiler 和列节之间安装了。试验性的结果在一？飞轮效果由列液体劫盗并且这样引起了的克服的建议政策罐头在操作时间和能量消耗下面切了的 45mm 批列表演 31%61% 。

关 键 词：batch distillation slop cut mode of operation column holdup 

分 类 号：TQ028.31[化学工程]