JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
Separation of Benzene/Cyclohexane by Vapor Permeation through Triethylene Glycol Liquid Membrane | |
Akira Ito1  Kazuaki Yamagiwa1  Nobuhiro Yamanouchi1  | |
[1] Department of Chemistry and Chemical Engineering, Niigata University | |
关键词: Liquid Membrane; Vapor Permeation; Benzene; Cyclohexane; | |
DOI : 10.1252/jcej.36.1070 | |
来源: Maruzen Company Ltd | |
【 摘 要 】
References(17)Cited-By(6)Vapor permeation of a benzene and cyclohexane mixture was studied using a liquid membrane of triethylene glycol (TEG), which is supported on the surface of a microporous hydrophobic membrane. Permeation experiments were conducted using a flat-type membrane cell under the conditions of atmospheric pressure on the feed side and a vacuum on the permeate side. Mixed vapors of benzene/cyclohexane and water were fed into the membrane cell by a carrier gas. The benzene vapor preferentially permeated through the TEG liquid membrane, that is, the TEG liquid membrane had a selectivity for the aromatic hydrocarbon. The separation factor for benzene over cyclohexane was around 8. This selectivity corresponded to the vapor-liquid equilibrium of hydrocarbons dissolved in TEG. Adding a salt to the TEG liquid membrane caused an increasing aromatic selectivity as well as a decreasing vapor permeation rate. This effect was examined using various salts, which were formulated using alkali metal and halogen ions. A liquid membrane of a TEG and KCl mixture showed a separation factor of over 400. KCl was the most effective agent to enhance the benzene selectivity. The ion components in the TEG liquid membrane may cause a kind of facilitated transport effect on the aromatic hydrocarbon vapor.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912080695388ZK.pdf | 19KB | download |