摘要
利用陆小华等提出的单参数过量自由焓模型，建立了由电解质混合溶剂的稀释热推算汽液平衡的方法。推算了 Ｌｉ Ｃｌ Ｃ Ｈ３ Ｏ Ｈ Ｈ２ Ｏ； Ｌｉ Ｃｌ Ｃ２ Ｈ５ Ｏ Ｈ Ｈ２ Ｏ； Ｌｉ Ｃｌ Ｃ３ Ｈ７ Ｏ Ｈ Ｈ２ Ｏ 及 Ｌｉ Ｃｌ（ Ｃ Ｈ３ ）２ Ｃ Ｈ Ｏ Ｈ Ｈ２ Ｏ 等体系的汽液平衡，计算结果与文献值符合良好，平均绝对偏差分别为：汽相摩尔分率｜Δｙ｜＝ ０．０１６，泡点温度｜Δ Ｔ｜＝ ０．４７ Ｋ 和平衡压力｜Δ Ｐ｜＝ ０．１０ ｋ Ｐａ。还能正确预测出甲醇体系中盐溶盐析交叉的盐效应规律。
Using single parameter model proposed by Lu Xiaohua etc.,a numerical method predicting VLE directly from enthalpies of dilution in mixed solvents was proposed. VLE of four systems LiCl CH 3OH H 2O;LiCl C 2H 5OH H 2O;LiCl C 3H 7OH H 2O and LiCl (CH 3) 2CHOH H 2O were calculated .The average absolute deviations between prediction values and those from literature are 0.016(vapor phase mole fraction)、0.47K(boiling point) and 0 10 kPa (vapor pressure), respectively.In addition,the cross salt effect of system LiCl(1) CH 3OH(2) H 2O(3) could also be predicted well.
出处
《南京化工大学学报》
1999年第4期44-48,共5页
Journal of Nanjing University of Chemical Technology(Natural Science Edition)
关键词
氯化锂
醇类
混合溶剂
汽液平衡
电解质
水
lithium Chloride alcohols mixed solvent vapor liquid equilibrium
