| 基于浓度平台期的无回流储罐循环全回流操作 |
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| 引用本文： | 姜占坤,白鹏,刘岩.基于浓度平台期的无回流储罐循环全回流操作[J].天津大学学报(自然科学与工程技术版),2012(4):357-360. |
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| 作者姓名： | 姜占坤 白鹏 刘岩 |
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| 作者单位： | 系统生物工程教育部重点实验室;天津大学化工学院 |
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| 摘 要： | 循环全回流操作中全回流-全采出操作是基础操作.提出了该过程中存在的浓度平台期现象,并对该现象进行了实验和模拟研究.基于本课题组提出的动态模型进行了模拟,模拟结果表明塔板数和相对挥发度对平台期的长度有明显影响.平台期的验证实验物系为甲醇/乙醇混合物和乙醇/正丙醇混合物.实验结果与模拟结果共同证明了平台期现象的存在.在平台期的基础上,提出了一种新的操作方式：无塔顶回流储罐循环全回流操作.将新方式与恒回流比方式比较,结果表明新方式具有省时高效的优点.
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| 关 键 词： | 间歇精馏 循环全回流 无回流储罐 |
Cyclic Total Reflux Operation Without Reflux Drum Based on Concentration Platform |
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| JIANG Zhan-kun,BAI Peng,LIU Yan.Cyclic Total Reflux Operation Without Reflux Drum Based on Concentration Platform[J].Journal of Tianjin University(Science and Technology),2012(4):357-360. |
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| Authors: | JIANG Zhan-kun BAI Peng LIU Yan |
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| Institution: | 1,2(1.Key Laboratory of Systems Bioengineering,Ministry of Education,Tianjin 300072,China;2.School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Total reflux and total withdrawal operation is the basic operation in cyclic total reflux operation.In the total withdrawal operation,a special phenomenon named ＂overhead concentration platform＂（OCP） was proposed for the first time in the paper,and was studied experimentally and theoretically.The simulation results indicated the number of theoretical trays and the relative volatility influenced the OCP phenomenon distinctly.The experiments were carried out with two mixtures,methanol/ethanol and ethanol/1-propanol.The experiments and simulation certified the exis-tence of OCP.Based on the OCP phenomenon,a new cyclic total reflux operation without reflux drum was proposed.The new operation mode was compared with the constant reflux ratio operation and the computational results showed that the new mode was effective and time-saving. |
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| Keywords: | batch distillation cyclic total reflux no reflux drum |
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