Microchannel Extraction of Butanone Oxime from Aqueous Ammonium Sulfate Solution Using Ionic Liquids

被引：0
|
作者：
Liu Y. [1 ]
Zhang C. [1 ]
Wu K.-J. [1 ]
Ye X.-Q. [1 ]
He C.-H. [1 ]
机构：
[1] Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2017年 / 31卷 / 03期
关键词：
Butanoneoxime; Extraction; Ionic liquid; Mass transfer; Microchannel;
D O I：
10.3969/j.issn.1003-9015.2017.03.005
中图分类号：
学科分类号：
摘要：
Aqueous ammonium sulfate solution is a by-product in butanone oxime synthesis, which may contain trace amount of butanone oxime. Therefore, a sustainable and efficient process is required to recover butanone oxime. Compared to conventional liquid-liquid extractors, microfluidic technique with high specific surface area, small volume, easy to scale up and integrate is an attractive method. In this paper, butanone oxime extraction from aqueous ammonium sulfate solution using ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) was investigated. Effects of total flow velocity, water phase flow velocity, ionic liquid phase flow velocity, aqueous to ionic liquid volumetric flux ratio, concentrations of butanone oxime and ammonium sulfate, and microchannel inner diameter on extraction efficiency and overall volumetric mass transfer coefficient were studied. The results show that the overall volumetric mass transfer coefficients are in the range of 0.008~1.5 s-1. Furthermore, an empirical correlation is developed to estimate the overall volumetric mass transfer coefficients which are found numerically proportional to the 1.14th power of flow ratio and 0.19th power of Reynolds number, and inversely proportional to the 1.26th power of microchannel inner diameter. The results present fundamental engineering data for industrial application of microchannels in butanone oxime extraction from aqueous ammonium sulfate solutions. © 2017, Editorial Board of “Journal of Chemical Engineering of Chinese Universities”. All right reserved.
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页码：530 / 538
页数：8
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