MASS-TRANSFER AND HYDRAULIC CHARACTERISTICS IN SPRAY AND PACKED EXTRACTION COLUMNS FOR SUPERCRITICAL CARBON-DIOXIDE ETHANOL-WATER SYSTEM

被引：31

作者：

LIM, JS ^{[1
]}

LEE, YW ^{[1
]}

KIM, JD ^{[1
]}

LEE, YY ^{[1
]}

机构：

[1] KOREA UNIV, DEPT CHEM ENGN, SUNGBUK KU, SEOUL 136701, SOUTH KOREA

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 1995年 / 8卷 / 02期

关键词：

MASS-TRANSFER COEFFICIENTS; SUPERCRITICAL CARBON DIOXIDE; EXTRACTION; ETHANOL; COLUMN CONTACTOR;

D O I：

10.1016/0896-8446(95)90025-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mass-transfer efficiencies and hydraulic characteristics of a 3.18-cm spray and a packed column for extracting ethanol from aqueous ethanol solution with supercritical carbon dioxide were investigated. Experiments were performed at 308.2, 313.2, and 323.2 K over a pressure range from 9.1 to 12.2 MPa. The influences of fluid properties, phase flow rates, column internals, and phase dispersion on mass-transfer efficiencies and hydraulic characteristics are discussed. An extension of a model for predicting mass-transfer efficiency in conventional liquid-liquid extraction to supercritical-fluid extraction was attempted. The model for mass-transfer efficiencies, developed for conventional spray and packed liquid-liquid extraction columns, was in good agreement with our experimental results.

引用

页码：127 / 137

页数：11

共 25 条

[1]

DEFILIPPI RP, 1980, EPA600280054 REP

[2]

DEGALEES.TE, 1965, INDIAN J TECHNOL, V3, P137

[3]

GAYLER R, 1957, T ICHEME, V35, P267

[4] MASS AND HEAT TRANSFER FROM DROPS IN LIQUID-LIQUID EXTRACTION [J].

HANDLOS, AE ;

BARON, T .

AICHE JOURNAL, 1957, 3 (01) :127-136

[5]

HEUER GJ, 1957, THESIS U TEXAS

[6]

HOUGH EW, 1959, PETROLEUM T AIME, V216, P469

[7] FLUID EXTRACTION OF HOPS, SPICES, AND TOBACCO WITH SUPERCRITICAL GASES [J].

HUBERT, P ;

VITZTHUM, OG .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1978, 17 (10) :710-715

[8] APPARATUS AND SEPARATIONS IN SUPERCRITICAL FLUID CHROMATOGRAPHY [J].

KLESPER, E ;

HARTMANN, W .

EUROPEAN POLYMER JOURNAL, 1978, 14 (02) :77-88

[9] MASS-TRANSFER EFFICIENCIES OF COLUMN CONTACTORS IN SUPERCRITICAL EXTRACTION SERVICE [J].

LAHIERE, RJ ;

FAIR, JR .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1987, 26 (10) :2086-2092

[10] PHASE-EQUILIBRIA FOR CARBON-DIOXIDE ETHANOL-WATER SYSTEM AT ELEVATED PRESSURES [J].

LIM, JS ;

LEE, YY ;

CHUN, HS .

JOURNAL OF SUPERCRITICAL FLUIDS, 1994, 7 (04) :219-230

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