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MASS TRANSFER IN A COUNTERCURRENT SPRAY COLUMN AT SUPERCRITICAL CONDITIONS
Korean Journal of Chemical Engineering, May 1996, 13(3), 234-241(8), 10.1007/BF02705944
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Abstract
Mass transfer characteristics were determined for countercurrent extraction in a spray column with su-percritical carbon dioxide solvent. Feeds were 5 and 10 vol% aqueous ethanol and iso-propanol at 25-65℃ and 6.89-15.51MPa. Results obtained in a 22mm inside diameter column showed enhanced extraction efficiencies over comparable liq-uid-liquid systems. The models based on conventional liquid-liquid extraction were modified to correlate overall mass transfer coefficients for supercritical conditions. The constant value in the model of measuring individual mass transfer coefficient was influenced by the density of carbon dioxide and the system used.
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Handlos AE, Baron T, AIChE J., 3, 127 (1957)
Higbie R, Trans. Am. Inst. Chem. Eng., May13, 365 (1935)
Idogawa K, Ikeda K, Fukuda T, Morooka S, Int. Chem. Eng., 27, 93 (1987)
Johnson AI, Hemielec AE, AIChE J., 6, 145 (1960)
Kumar A, Hartland S, Chem. Eng. Commun., 31, 193 (1984)
Lahiere RJ, Fair JL, Ind. Eng. Chem. Res., 26, 2086 (1987)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15(1), 59 (1976)
Pratt HRC, Ind. Chem., Feb., 63 (1955)
Rathkamp PJ, Bravo JL, Fair JR, Solv. Extr. Ion Exch., 5, 3676 (1987)
Ruby CL, Elgin JC, Chem. Eng. Prog., 51(16), 17 (1955)
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Skelland AHP, Huang YF, AIChE J., 25, 80 (1979)
Thornton JD, "Science and Practice of Liquid-Liquid Extraction vol. 1 and 2," Oxford Eng. Sci. Series 27 (1992)
Treybal RE, "Mass Transfer Operations," 3rd ed., McGraw-Hill, New York, NY (1980)
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Whitman WG, Chem. Metal. Eng., 29, 146 (1923)
Wilke CR, Chang P, AIChE J., 1, 264 (1955)
