环合废液脱水后，分离塔回流比为15，理论板为40时，回收乙醇中甲醇的质量分数小于10%。
The recovered ethanol with less than 10% methanol can be purified in a dehydration tower and a separation tower with 40 theoretical plates and a reflux ratio of 15.
甲氧苄氨嘧啶合成过程产生大量含甲醇和乙醇的废液，实验研究了新的回收工艺。
Large amounts of methanol and ethanol exist in the effluent of the condensation and cyclization reaction during the trimethoprim synthesis process. A new recovery process was evaluated experimentally.
回收的环己烷、无水乙醇可再用于物理化学实验。
The purified cyclohexane and absolute ethanol can be suitable to the experiment of physical chemistry.
找到了较好的回收乙二醇(EG)的新方法，给出了EG收率和浓缩程度及乙醇加入量的关系。
A new method for recovering EG was found and the relations between EG's yield and the amount of ethanol added as well as the concentration of aqueous liquid was provided.
本文提出了在70%乙醇溶剂中以氧化铁作为触煤合成二苯胍，同时回收副产硫化氢合成硫脲的联合制备方法。
Diphenyl guanidine has been prepared by using of Fe2 O3 as catalyst and 70% ethanol as solvent, and simultaneously the by - product H2S is used to prepare thiourea.
本文提出了在70%乙醇溶剂中以氧化铁作为触煤合成二苯胍，同时回收副产硫化氢合成硫脲的联合制备方法。
Diphenyl guanidine has been prepared by using of Fe2 O3 as catalyst and 70% ethanol as solvent, and simultaneously the by - product H2S is used to prepare thiourea.
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