The methanol rectification unit used in Tuha Oilfield Methanol Factory includes two rectification towers adopting total refluxoperation.
吐哈油田甲醇厂甲醇精馏装置系两塔精馏，采用全回流操作。
2
Objective To study the effect of small or large embedding method on the three complications including anastomotic fistula, stenosis and reflux after the operation of esophageal and cardiac carcinoma.
目的探讨小包埋吻合法与大包埋吻合法对食管癌及贲门癌手术后吻合口瘘、狭窄、反流这三大并发症的影响。
3
The dynamic characteristic of concentration change on plates of batch rectification column in no reflux start up process and in no reflux period of pulse operation process have been calculated.