Axial dispersion and phase holdup characteristics in reciprocating plate extracting columns

Journal Article · · Separation Science and Technology; (United States)

OSTI ID:5638667

Ju, Jongdae; Yu, Yongho; Kim, Sang Done ^[1]

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1. Korea Advanced Inst. of Science and Technology, Seoul (Korea)

In recent years, reciprocating plate extraction columns have been widely used in pharmaceutical, petrochemical, metallurgical, and chemical processes because of their high extraction performance. Axial dispersion and phase holdup characteristics have been determined in a 0.102-m i.d. {times} 3.5 high QVF glass column. The axial dispersion coefficient decreases with increasing reciprocating frequency (f) and amplitude (A) in the inhomogeneous dispersed phase flow regime, whereas it increased in the emulsion flow regime. The axial dispersion coefficient with a perforated plate increases with continuous and dispersed phase velocities. However, the effect of phase velocities on axial dispersion is less pronounced with the fan plate. The axial dispersion coefficient can be correlated with A{sup 2}f, fluid velocities, and the free fractional opening area of the plates. The dispersed phase holdup increases with an increase in agitation intensity, Af, and decreases with the free opening area of the plate.

• OSTI ID: 5638667
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 25:7-8; ISSN SSTED; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
COLLOIDS
DATA
DENSITY
DESIGN
DISPERSIONS
DISTRIBUTION
EMULSIONS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION APPARATUSES
EXTRACTION COLUMNS
FLOW MODELS
FLOW RATE
FLUID MECHANICS
FOSSIL FUELS
FREQUENCY DEPENDENCE
FUELS
GAS OILS
HYDROGEN COMPOUNDS
INFORMATION
KEROSENE
LIQUID FUELS
MATHEMATICAL MODELS
MECHANICS
NUMERICAL DATA
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHASE STUDIES
PHYSICAL PROPERTIES
PLATES
SEPARATION EQUIPMENT
SURFACE PROPERTIES
SURFACE TENSION
VISCOSITY
WATER