采用自制的汽液平衡装置,测定了溶剂油D60(主要成分为C10 -14环烷烃和异构烷烃)中的异构烷烃与环烷烃的相对挥发度(a12),在加入环丁砜萃取剂或环丁砜-三甘醇复合萃取剂的条件下,考察了水对α12的影响.实验结果表明,在环丁砜萃取剂中加入质量分数为3％(以萃取剂和溶剂油D60总质量计)的水时,α12可提高0.020,达到1.668,汽液平衡温度降至190℃；在环丁砜-三甘醇复合萃取剂中加入质量分数为5％的水时,α12提高了0.037,达到1.779,汽液平衡温度降至170℃.%The relative volatility (α12 ) of isoparaffins and naphthenes in the solvent naphtha D60 consisted of C10-14 naphthenes and isoparaffins was determined in a set of vapor-liquid equilibrium apparatus. The effect addition of water to sulfolane or sulfolane + triethylene glycol used as the entrainer on α12 was investigated. The result showed that α12 could increased by 0.020 to 1. 668, and the vapor-liquid equilibrium temperature ( Te) would drop to 190 t after water with mass fraction 3% (based on total mass in the entrainer and solvent naphtha D60, the same below) was added into sulfolane. When water with mass fraction 5% was add into sulfolane + triethylene glycol, α12 increased by 0.037 to 1.779, and the Te dropped to 170℃.
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