CIESC Journal

• 化工学报 • 上一篇    下一篇

超临界CO_2萃取蛋黄油及数学模拟

吴卫泽,武练增,刘振宇   

  1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室!山西太原030001,中国科学院山西煤炭化学研究所煤转化国家重点实验室!山西太原030001,中国科学院山西煤炭化学研究所煤转化国家重点实验室!山西太原030001
  • 出版日期:2001-02-25 发布日期:2001-02-25

EXTRACTION OF EGG YOLK OIL WITH SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTS AND MODELING

WU Weize, WU Lianzeng and LIU Zhenyu (State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan?030001,Shanxi,China)   

  • Online:2001-02-25 Published:2001-02-25

摘要: 在萃取器为 1.2L的试验装置上 ,在温度为 45℃、压力为 32 .0MPa、原料粒度 (D)为 1.2mm的条件下 ,进行了超临界CO2 萃取蛋黄油的研究 .考察了CO2 的流量和原料粒度对萃取的影响 .建立了超临界CO2 萃取蛋黄油的数学模型 ,该模型能较好地反映实际萃取过程 .根据模拟结果得到外扩散传质系数和流体流速的 0 .5 48次方成正比

Abstract: Extraction of egg yolk oil (EYO) from egg yolk powder with supercritical carbon dioxide(SC-CO 2) was performed at 45 ℃ and 32.0 MPa in a 1.2 L laboratory apparatus. The effects of particle size and flow rate of CO 2 on the extraction were investigated. The controlling steps in extraction were external diffusion of EYO and equilibrium of EYO between SC-CO 2 and matrix. A mathematical model was developed for simulating the extraction process . The model could simulate satisfactorily the process of extraction of EYO with SC-CO 2. The volumetric mass transfer coefficient K f a was directly proportional to the flow rate of CO 2 with an exponent of 0.548

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