化学工程2017，Vol.45Issue(12)：53-57,5.DOI:10.3969/j.issn.1005-9954.2017.12.012
碳酸二甲酯-甲醇-乙二醇等压汽液平衡的测定与关联
Isobaric vapor-liquid equilibrium for dimethyl carbonate-methanol-ethylene glycol system
摘要
Abstract
In order to validate the feasibility of ethylene glycol as the extractive solvent for separation the dimethyl carbonate + methanol azeotropic system by extractive distillation,isobaric vapor-liquid equilibrium (VLE) data of the ternary system (dimethyl carbonate-methanol-ethylene glycol) were measured at 100 kPa in a modified Othmer still.With the addition of ethylene glycol,the relative volatility of dimethyl carbonate to methanol increases,the vapor-liquid equilibrium temperature increases.The vapor-liquid equilibrium curve of methanol and dimethyl carbonate with ethylene glycol deviates from the curve of methanol and dimethyl carbonate without ethylene glycol.The greater the ethylene glycol mole fraction,the greater the deviation from the curve without the ethylene glycol.The NRTL model was used to correlate the experimental data of the system (dimethyl carbonate-methanol-ethylene glycol).The standard deviation of temperature is 0.82 K.关键词
碳酸二甲酯/甲醇/乙二醇/NRTL模型Key words
dimethyl carbonate/methanol/ethylene glycol/NRTL model分类
化学化工引用本文复制引用
曹玲,徐威震,李学琴,程建文..碳酸二甲酯-甲醇-乙二醇等压汽液平衡的测定与关联[J].化学工程,2017,45(12):53-57,5.基金项目
新疆维吾尔自治区自然科学基金资助项目(2015211A002) （2015211A002）
