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

作　　者：张雪梅 何杰 张卫江 张志刚 简春贵 杨志才 

机构地区：School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Tianjin Univtech Co. Ltd. Tianjin 300072 China

出　　处：《Chinese Journal of Chemical Engineering》2006年第3X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 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 

分 类 号：TQ028[化学工程]