Present work analyzes potential of calcium chloride (CaCl₂) and zinc chloride (ZaCl₂) salts as entrainer for breaking the minimum boiling azeotrope of ethanol and water. Isobaric vapor-liquid equilibrium (VLE) data for the binary systems of water + ethanol and ternary system of water + ethanol + calcium chloride, and water + ethanol + zinc chloride were measured at a constant pressure of 94.5 kPa. The effect of salts on the relative volatility of ethanol to water as well as on the vapor phase mole fractions of ethanol were also studied experimentally. From the experimental results, it is observed that with addition of salts, the azeotropic point of the ethanol and water system can be eliminated. Salting out effects in case of calcium chloride was more than that zinc chloride salt. The results obtained in this work showed that calcium chloride could be a better choice for separation of the water + ethanol azeotrope. Electrolyte nonrandom two-liquid (eNRTL) model was used to correlate the experimental VLE data. The model prediction with the regressed parameters was found in well agreement with the experimental data. The experimental data obtained in this work was found thermodynamically consistent using van Ness test.

目前的工作分析了氯化钙（CaCl ₂）和氯化锌（ZaCl ₂）的潜力）盐作为夹带剂，可打破乙醇和水的最低沸点共沸物。在94.5 kPa的恒定压力下，测量了水+乙醇的二元系统和水+乙醇+氯化钙的三元系统以及水+乙醇+氯化锌的三元系统的等压气液平衡（VLE）数据。还通过实验研究了盐对乙醇相对于水的相对挥发性以及对乙醇的气相摩尔分数的影响。从实验结果可以看出，通过添加盐，可以消除乙醇和水系统的共沸点。氯化钙的盐析效果比氯化锌盐强。这项工作获得的结果表明，氯化钙可能是分离水+乙醇共沸物的更好选择。电解质非随机两液（eNRTL）模型用于关联实验VLE数据。发现具有回归参数的模型预测与实验数据非常吻合。使用van Ness试验发现在这项工作中获得的实验数据在热力学上是一致的。