用蒸汽在机械化澄清槽底部间接加热，使沉积于底部的重质焦油软化，减少刮板阻力。
Apply steam to heat the flushing-liquor decanter indirectly to soften the heavy tar depositing on the bottom of tank to decrease the drag of chain scraper.
准确获得刮膜分子蒸馏器内流体的速度、温度及浓度分布具有十分重要的研究意义。
It is valuable to get the distribution of the velocity field, temperature field and concentration field that are formed in the process of molecular distillation.
通过刮膜蒸发器脱重和高精密精馏的方法对羰基化制备乙酸工艺副产物-重组分残液回收进行了实验。
Recovery of the residue liquid from the process for carbonylation of methanol to acetic acid was studied experimentally.
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