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    National Tsing Hua University Institutional Repository > 工學院  > 化學工程學系 > 專利  >  Method for the regeneration of supercritical extractant


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/58243


    Title: Method for the regeneration of supercritical extractant
    Authors: Tan, Chung-Sung;Chiu, Yu-Wen
    教師: 談駿嵩
    Date: 2003/1/14
    Keywords: supercritical extractant
    molecular sieve
    permeate rich
    retentate
    clusters
    Abstract: A method for recovering supercritical extractant, such as supercritical CO.sub.2, from a mixture containing the supercritical extractant and a solute is disclosed, which includes contacting the mixture with a molecular sieve membrane at a temperature and a pressure in a critical region of the extractant and near a critical point of the extractant so that a permeate rich in the extractant and a retentate having a enriched concentration of the solute in the extractant are generated. The molecular sieve membrane has a pore size significantly larger than a size of the extractant provided that the pore size is less than and close to sizes of clusters formed of the solute and the extractant at the temperature and the pressure.
    URI: http://patft1.uspto.gov/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/58243
    http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=US2002139749&F=0
    Appears in Collections:[化學工程學系] 專利

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