摘要
乙醇与异丙醇二元混合物因两者存在结构和化学性质相似而难分离。对减压精馏分离乙醇与异丙醇工艺条件进行了探索,因折光率与溶液组成存在一一对应关系,进而利用阿贝折射仪进行纯度分析,考察了填料类型、真空度、溶液组成等对产物分离纯度的影响。实验研究结果表明,在以金属螺旋弹簧柱作精馏柱填料,塔顶真空度为700mmHg(93.33kPa)时,可将乙醇摩尔分数为0.5的混合液纯度提高到0.8600。
It is difficult to separate the binary mixtures of ethanol and isopropanol because both are similar in the structure and chemical properties.The separation based on reduced pressure rectification was investigated.A certain refractive index corresponds to a certain solution composition.The purity of ethanol was analysed by Abbe refractometer.The effect of the packing type,vacuum and solution composition on the purity of the product was studied.The results show that the mole fraction of ethanol can rise from 0.5 up to 0.8353 when the metal coil spring was used as distillation column packing and tower top vacuum was 700mmHg（93.33kPa）.
出处
《化学工程师》
CAS
2011年第7期12-14,26,共4页
Chemical Engineer
基金
中南民族大学学生科研基金(KYCX100209Z)
关键词
乙醇
异丙醇
精馏分离
ethanol
isopropanol
rectification separation
作者简介
作者简介：曹裕清（1988-），男，湖南衡阳人，中南民族大学化学与材料科学学院应用化学专业在校本科生。
指导老师：肖杨（1976-），男（汉），副教授，博士，研究方向：化学反应工程与工艺。
