| Batch Extractive Distillation in a Column with a Middle Vessel |
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| 引用本文： | 崔现宝,杨志才,翟亚锐,潘玉军. Batch Extractive Distillation in a Column with a Middle Vessel[J]. 中国化学工程学报, 2002, 0(5) |
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| 作者姓名： | 崔现宝 杨志才 翟亚锐 潘玉军 |
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| 作者单位： | CUI Xianbao YANG Zhicai，ZHAI YaruiPAN YujunDistillation Laboratory of State Key Laboratories of Chemical Engineering，Tianjin University，Tianjin 300072，China |
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| 摘 要： | Batch extractive distillation was studied in a column with a middle vessel. The process was simulated by a constant holdup model and solved by two point implicit method. Acetone and methanol mixture was separated in such a setup using water as solvent. The simulation agrees well with experimental results. The experimental and simulation results show that the solvent at the bottom and the product at the top of the column can be withdrawn simultaneously for a long period of time. It needs more time for the solvent to reach high purity than that required for the more volatile component to reach high purity, so that the time to withdraw solvent from the bottom is delayed.
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Batch Extractive Distillation in a Column with a Middle Vessel |
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| CUI Xianbao YANG Zhicai,ZHAI YaruiPAN YujunDistillation Laboratory of State Key Laboratories of Chemical Engineering,Tianjin University,Tianjin ,China. Batch Extractive Distillation in a Column with a Middle Vessel[J]. Chinese Journal of Chemical Engineering, 2002, 0(5) |
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| Authors: | CUI Xianbao YANG Zhicai ZHAI YaruiPAN YujunDistillation Laboratory of State Key Laboratories of Chemical Engineering Tianjin University Tianjin China |
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| Affiliation: | CUI Xianbao YANG Zhicai,ZHAI YaruiPAN YujunDistillation Laboratory of State Key Laboratories of Chemical Engineering,Tianjin University,Tianjin 300072,China |
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| Abstract: | Batch extractive distillation was studied in a column with a middle vessel. The process was simulated by a constant holdup model and solved by two point implicit method. Acetone and methanol mixture was separated in such a setup using water as solvent. The simulation agrees well with experimental results. The experimental and simulation results show that the solvent at the bottom and the product at the top of the column can be withdrawn simultaneously for a long period of time. It needs more time for the solvent to reach high purity than that required for the more volatile component to reach high purity, so that the time to withdraw solvent from the bottom is delayed. |
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| Keywords: | extractive distillation batch extractive distillation middle vessel simulation |
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