关键词:

超临界CO₂萃取, 挥发油, 传质, 模型

Abstract:

The mass transfer models presented for supercritical CO₂ extraction of natural products have great significance in prediction of extraction conditions of industrial scale.The mechanism，classification and characteristics of the dynamic models for extraction of volatile oils using supercritical CO₂ are investigated.Several influential models obtained from the differential mass balance in the extraction bed—two-phase model，shrinking core model，broken and intact cells model and multicomponent logical model are compared.The application ranges of the models are also discussed.

Key words:

超临界CO₂萃取, 挥发油, 传质, 模型