沸腾时间对环乙烷-乙醇气液平衡相图绘制实验的影响  

作　　者：任冬梅[1] 侯淑华[1] 王鑫 夏云生[1] 包德才[1] 

机构地区：[1]渤海大学化学与化工学院,辽宁锦州121013

出　　处：《科技创新与应用》2018年第20期22-25,共4页Technology Innovation and Application

基　　金：渤海大学教改项目(编号:BDJG2016YB21)

摘　　要：考察了环己烷-乙醇体系沸腾时间对相图绘制的影响。结果表明,不同配比的环己烷-乙醇的沸点及气相组成随沸腾时间变化趋势不同,进而导致不同样品的最优取样时间不同。低乙醇含量(8.5%及14%)样品沸腾5~9min取样最佳,高乙醇含量(60%及90%)样品最优气相取样时间为样品沸腾5~21min,乙醇含量接近恒沸组成(32%及48%)的样品沸腾即可取样。The influence of boiling time of cyclohexane -ethanol system on phase diagram drawing was investigated. The results show that the boiling point and gas composition of cyclohexane -ethanol with different ratios vary with boiling time, which leads to different optimal sampling time of different samples. The sample with low ethanol content （8.5% and 14%） was the best for boiling 5？9 min, while the sample with high ethanol content （60% and 90%） had the best sample boiling time （5？21 min） and the ethanol content was close to the azeotropic composition （32% and 48%）.

关 键 词：相图 环已烷 乙醇 沸腾时间 

分 类 号：O64[理学—物理化学]