再蒸馏

如包括预分馏损失，则甲苯的收率为96%（重量）。酸碱洗涤和再蒸馏损失一般可按3%计，因此，纯甲苯净收率为93%（重量）。

When losses in prefractionation , acid washing and redistillation were included , the net recovery of toluene from the platformate was 93 % .

加水后再蒸馏的喷气燃料中，密封静置120d后基本没有悬浮物产生。

In the distilled jet fuel after adding water , no suspended matter comes into being 120 days later in airproof condition .

对用溶剂浸泡冬青叶提取冬青油（水杨酸甲酯）的工艺进行了探讨，结果表明在常温常压下用水∶乙醇体积比为2∶1的溶液浸取6h后再进行蒸馏，产率可达3.18%。

This paper studies on the technology of drawing wintergreen oil with solvent soaking method . The result obtained shows that : soaking 6 hours with solution of water and alcohol ( 2 ∶ 1 ) and then distilling , the producing rate is to 3.18 % .

为了将产物与其它物料分离，通常将混合固体粉碎，首先用溶剂将二苯砜浸出，然后再经蒸馏、干燥，回收二苯砜。

In order to purify product from other substance , the solid mixtures are usually comminuted and soaked out by diphenyl sulfone , and then recover the solvent by distillation and drying .

实验结果表明，向原油中加入适量的回炼油后再进行蒸馏，可使轻油收率提高约2m%或裂化料收率提高约5m%。

Experimental results have shown that the light distillate yield is increased by about 2m % or the vacuum gas oil yield is increased by about 5m % when proper amount cycle stock is add to the feedstock .

再评酒精蒸馏无氰解吸工艺的特点&兼谈选择解吸工艺时应注意的问题

Review of technique of elution of gold from carbon by the ethyl alcohol distillation process without cyanide

所余废硫酸再经过水蒸气蒸馏处理使其中三氯乙醛含量降低到一定标准后可用于农肥生产。

The remained waste sulfuric acid was vapor distilled to reduce the chloral content so that it could be utilized in fertilizers product .

人们从当地的一种仙人掌&龙舌兰的茎中煮出甜汁，然后再把甜汁蒸馏，得到龙舌兰酒。

The alcoholic drink is distilled from sweet juices that form when stems of a native cactus , the blue agave , are cooked .

当归油的提取是以乙醇水溶液为溶剂，先浸渍当归粉，再回流，然后蒸馏得当归油，经红外光谱法鉴定，含有藁本内酯这一主要有效成分。

Ethanol and water was used as solvent to infuse angelica powder , then angelica oil was obtained by refluxing and distilling extractant . Fourier transform infrared spectroscopy analysis shows that angelica oil contains the efficient component ligustilide .