| 常规间歇萃取精馏分离苯-环己烷的研究 |
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| 引用本文： | 张志刚,徐世民,李鑫钢,张卫江. 常规间歇萃取精馏分离苯-环己烷的研究[J]. 化学工程, 2006, 34(4): 5-8 |
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| 作者姓名： | 张志刚 徐世民 李鑫钢 张卫江 |
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| 作者单位： | 天津大学精馏技术国家工程研究中心,天津,300072;长春工业大学化工学院,吉林长春,130012;天津大学精馏技术国家工程研究中心,天津,300072;天津大学化学工程研究所,天津,300072 |
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| 摘 要： | 通过一个常规间歇萃取精馏实验装置,考察了不同萃取剂在不同回流比及萃取溶剂加入速率情况下对分离苯-环己烷共沸体系的影响。结果表明,二元混合溶剂能够解决单一溶剂的选择性与溶解性相矛盾的问题;且在同等条件下,综合性能优于单一溶剂;随着溶剂加入速率和操作回流比的增加,产品的产量逐渐提高,尤其重要的是混合溶剂间歇萃取精馏技术与简单溶剂间歇萃取精馏技术相比并不复杂。
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| 关 键 词： | 常规间歇萃取精馏 N N-二甲基甲酰胺 二甲亚砜 苯 环己烷 |
| 文章编号： | 1005-9954（2006）04-0005-04 |
Study on separating benzene-cyclohexane by regular batch extractive distillation |
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| ZHANG Zhi-gang,XU Shi-min,LI Xin-gang,ZHANG Wei-jiang. Study on separating benzene-cyclohexane by regular batch extractive distillation[J]. Chemical Engineering, 2006, 34(4): 5-8 |
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| Authors: | ZHANG Zhi-gang XU Shi-min LI Xin-gang ZHANG Wei-jiang |
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| Affiliation: | 1. National Engineering Research Center for Distillation Technology, Tianjin University, Tianjin 300072, China; 2. Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China; 3. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, Jilin Province, China |
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| Abstract: | A regular batch extractive distillation process for separating close boiling and azeotropic mixtures was studied experimentally.The effects of single solvent,mixed solvent and operating parameters,such as reflux ratio and solvent feed rate,on the separation process were investigated.The results show that binary mixed solvent(dimethylsulfoxide and N,N-dimethylformamide) is superior to single solvent(N,N-dimethylformamide or dimethylsulfoxide) for separating benzene-cyclohexane by regular batch extractive distillation.With the increase of the reflux ratio and flow rate of the solvents,the amount of products was increased in the process of regular batch extractive distillation.In addition,batch extractive distillation with mixed solvent is not more complicated, compared with batch extractive distillation with single solvent. |
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| Keywords: | regular batch extractive distillation N N-dimethylformamide(DMF) dimethylsulfoxide(DMSO) benzene cyclohexane |
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