精制的

The refined solvent oil with less than 0.1%aromatics wa s used in medicine Brufen production as conventional solvent.

药品布洛芬生产新工艺中采用橡胶工业用剂油(剂油)作通用剂，要求其芳烃含量小于0.1%。

Capsicum oleresin is a kind of natural hot sauce separated and refind from capsicin extracted from chlili.

辣椒是从红辣椒果实中提取辣椒油，再经分离而得一种具有天然辣味调味品。

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过工艺改进,采用硫化钠和氢氧化钠混合物进行处理,得到纯度≥99%O,O-二乙基硫代磷酰氯。

The purpose of polymethylene polyphenyl polyamines purification system is to get rid of anilin and water.The stripping tower and drying tower are two main separation units in the system.

多胺任务是脱除粗多胺中苯胺和水,针对现有工艺存在效果差、消耗高等问题,分别对影响汽提塔和干燥塔因素进行了模拟分析,提出了相应改进措施。