| 粗萘连续多级逆流分步结晶过程的研究 |
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| 引用本文： | 孙绪峰,李群生,苏鸣皋,易争明.粗萘连续多级逆流分步结晶过程的研究[J].北京化工大学学报(自然科学版),2009,36(3):11-14. |
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| 作者姓名： | 孙绪峰 李群生 苏鸣皋 易争明 |
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| 作者单位： | 北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029 |
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| 摘 要： | 以连续多级逆流分步结晶过程为研究对象，在自行开发设计的长1350mm、内径Φ=50mm的结晶塔内，以萘-硫茚的混合物为实验物系，考察了搅拌速度、晶体床层高度、进料质量分数、回流比等操作参数对操作直线和分离效率的影响。结果表明，在900mm的晶体床层高度和回流比3.30的条件下可以将物料中萘的质量分数从95.36%提高到99.99%。
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| 关 键 词： | 连续操作 多级 逆流 结晶 萘 |
A continuous multi-stage countercurrent fractional crystallization process for crude naphthalene |
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| SUN XuFeng,LI QunSheng,SU MingGao,YI ZhengMing.A continuous multi-stage countercurrent fractional crystallization process for crude naphthalene[J].Journal of Beijing University of Chemical Technology,2009,36(3):11-14. |
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| Authors: | SUN XuFeng LI QunSheng SU MingGao YI ZhengMing |
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| Institution: | College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A continuous multistage counter-current fractional crystallization process has been studied. The crystallizer column was designed and developed especially for this study. A mixture of naphthalene and thionaphthene was studied using a column of length 1350mm and inner diameter Φ=50mm. The effects of varying the speed of stirring, crystal bed height, fraction of naphthalene in the feed, and flux ratio on the operation and the separation efficiency were systematically studied. By changing the parameters which influence the separation efficiency, a large amount of experimental data were collected and analyzed. It was shown that it is possible to improve the fraction of naphthalene in the feed from 95.36% to 99.99% with a crystal-bed height of 900mm and reflux ratio of 3.30. |
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| Keywords: | continuous operation multi-stage countercurrent crystallization naphthalene |
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