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液液液三相萃取装置:操作参数对传质效率的影响(英文)

Liquid-Liquid-Liquid Three Phase Extraction Apparatus:Operation Strategy and Influences on Mass Transfer Efficiency

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【Author】 HE Xiuqiong 1,2,HUANG Kun 1,**,YU Pinhua 1,2,ZHANG Chao 1,2,XIE Keng 1,2,LI Pengfei 1,2,WANG Juan 1,2,AN Zhentao 1 and LIU Huizhou 1,** 1 Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sci-ences,Beijing 100190,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China

【机构】 Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences； Graduate University of Chinese Academy of Sciences；

【摘要】 A new mixer-settler-mixer three chamber integrated extractor is proposed in this work for liquid-liquid-liquid three phase countercurrent and continuous extraction.Experiments revealed the influences of the structural design of the three-liquid-phase extractor and some key operational parameters on three-phase partition of two phenolic isomers,p-nitrophenol(p-NP) and o-nitrophenol(o-NP).The model three-liquid-phase extraction system used here is nonane(organic top-phase)-polyethylene glycol(PEG 2000)(polymer middle-phase)-(NH4)2SO4 aqueous solution(aqueous bottom-phase).It is indicated that agitating speed and retention time in three-phase mixer are key parameters to extraction fraction of nitrophenol.Dispersion band behavior is related to agitating in-tensity,and its occurrence does not affect the extraction fraction of target compounds.The present work highlights the possibility of a feasible approach of scaling up of the proposed three-phase extraction apparatus for future in-dustrial-aimed applications.更多还原

【Abstract】 A new mixer-settler-mixer three chamber integrated extractor is proposed in this work for liquid-liquid-liquid three phase countercurrent and continuous extraction.Experiments revealed the influences of the structural design of the three-liquid-phase extractor and some key operational parameters on three-phase partition of two phenolic isomers,p-nitrophenol(p-NP) and o-nitrophenol(o-NP).The model three-liquid-phase extraction system used here is nonane(organic top-phase)-polyethylene glycol(PEG 2000)(polymer middle-phase)-(NH4)2SO4 aqueous solution(aqueous bottom-phase).It is indicated that agitating speed and retention time in three-phase mixer are key parameters to extraction fraction of nitrophenol.Dispersion band behavior is related to agitating in-tensity,and its occurrence does not affect the extraction fraction of target compounds.The present work highlights the possibility of a feasible approach of scaling up of the proposed three-phase extraction apparatus for future in-dustrial-aimed applications.更多还原

【关键词】 three-liquid-phase extraction； extractor； mixer-settler-mixer； separation； nitrophenol；
【Key words】 three-liquid-phase extraction； extractor； mixer-settler-mixer； separation； nitrophenol；

【基金】 Supported by the National Natural Science Foundation of China (51074150,21027004);the National Basic Research Program of China (2012CBA01203,2007CB613507);the Innovative Research Group Science Fund (20221603)

【文献出处】 Chinese Journal of Chemical Engineering ,中国化学工程学报(英文版) , 编辑部邮箱 ,2012年01期

【分类号】TQ028.32
【被引频次】4
【下载频次】154

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