EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS

CIESC Journal

EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS

张建君; 朱美文; 于恩平; 张泽廷

Beijing Institute of Chemical Technology, Beijing 100029, China

收稿日期:1992-03-09 修回日期:1992-09-10 出版日期:1993-12-28 发布日期:1993-12-28
通讯作者: 张建君

EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS

ZHANG Jianjun; ZHU Meiwen; YU Enping; ZHANG Zeting

Beijing Institute of Chemical Technology, Beijing 100029, China

Received:1992-03-09 Revised:1992-09-10 Online:1993-12-28 Published:1993-12-28
Contact: ZHANG Jianjun

摘要/Abstract

摘要： A flow apparatus was set up for measuring the solubility of a solid solute in a supercritical fluid withthe presence of a small amount of entrainer.The solubilities of biphenyl,diphenylamine and benzoic acid insupercritical carbon dioxide with one of the selected entrainers which were ethanol,acetone and n-hexanerespectively,were obtained in the pressure range of 10—32 MPa and the temperature range of 308—318K.Asolvolytic association theory has been proposed to explain the mechanism of entrainer effect,and theexperimental results were reasonably analysed.According to the solvolytic association theory,the association equa-tion of state was adopted to correlate the experimental data with good accuracy.

关键词: entrainer;phase equilibrium;supercritical fluid extraction;solubility

Abstract: A flow apparatus was set up for measuring the solubility of a solid solute in a supercritical fluid withthe presence of a small amount of entrainer.The solubilities of biphenyl,diphenylamine and benzoic acid insupercritical carbon dioxide with one of the selected entrainers which were ethanol,acetone and n-hexanerespectively,were obtained in the pressure range of 10—32 MPa and the temperature range of 308—318K.Asolvolytic association theory has been proposed to explain the mechanism of entrainer effect,and theexperimental results were reasonably analysed.According to the solvolytic association theory,the association equa-tion of state was adopted to correlate the experimental data with good accuracy.

Key words: entrainer, phase equilibrium, supercritical fluid extraction, solubility

张建君, 朱美文, 于恩平, 张泽廷. EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS[J]. CIESC Journal.

ZHANG Jianjun, ZHU Meiwen, YU Enping, ZHANG Zeting. EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS[J]. .

EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS

EFFECTS OF ENTRAINERS ON THE PHASE EQUILIBRIUM OF SUPERCRITICAL FLUID EXTRACTION PROCESS

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