| 甲基环己烷--正庚烷--混合溶剂体系的 相平衡及溶剂抽提性能 |
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| 引用本文： | 伍志春,廖晓星,陈家镛. 甲基环己烷--正庚烷--混合溶剂体系的 相平衡及溶剂抽提性能[J]. 过程工程学报, 2000, 21(2): 118-122 |
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| 作者姓名： | 伍志春 廖晓星 陈家镛 |
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| 作者单位： | 中国科学院化工冶金研究所,北京 100080 |
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| 基金项目： | 国家自然科学基金，中国石油化工总公司资助项目，29836130，，， |
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| 摘 要： | 测定了甲基环己烷-正庚烷-混合溶剂(环丁砜/苯甲醇及环丁砜/N-甲基-吡咯烷酮)体系在(35±0.1)和(45±0.1)C下的液液分层曲线及各体系的结线数据,并计算得到了混合溶剂的选择性、溶解度等数据.初步讨论了以上混合溶剂体系萃取分离甲基环己烷与正庚烷的基本性能.结果表明,同一温度下质量组成相同的环丁砜/苯甲醇混合溶剂体系的选择性、溶解度等均较环丁砜/N-甲基-吡咯烷酮混合溶剂体系为优.结合25C时的数据,考察了温度对这些溶剂体系的选择性、溶解度等的影响,表明升高温度能提高溶剂的溶解能力,而选择性则有所降低.
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| 关 键 词： | 混合溶剂 甲基环己烷 正庚烷 相平衡 选择性 溶解度 mixed solvent |
| 文章编号： | 1001-2052(2000)02-0118-05 |
| 修稿时间： | 1999-04-21 |
Equilibria and Extraction in the System of Methyl Cyclohexane-n-Heptance-Mixture Solvent |
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| WU Zhi-chun,LIAO Xiao-xing,CHEN Jia-yong. Equilibria and Extraction in the System of Methyl Cyclohexane-n-Heptance-Mixture Solvent[J]. Chinese Journal of Process Engineering, 2000, 21(2): 118-122 |
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| Authors: | WU Zhi-chun LIAO Xiao-xing CHEN Jia-yong |
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| Abstract: | Solubility curves and equilibrium tie lines for the systems of methylcyclohexane-n-heptane-mixed solvent (sulfolane/benzyl alcohol orsulfolane/N-methyl-pyrrolidone) have been measured at (35±0.1) and(45±0.1)℃. The selectivity of the mixed solvents for methylcyclohexane to n-heptane and the solubility of methyl cyclohexane andn-heptane in the mixed solvents were calculated from the equilibrium data.The extractive properties of the mixed solvents were discussed. Theresults showed that sulfolane/benzyl alcohol system have such betterextractive properties (selectivity, solubility etc.) thansulfolane/N-methyl-pyrrolidone system. Effect of temperature onselectivity and solubility was evaluated. Increase in temperatureincreases the solubility to some extent, nevertheless, decreases theselectivity. |
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| Keywords: | mixed solvent methyl cyclohexane n-heptane phase equilibrium selectivity solubility |
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