Mechanism of continuous-phase mass transfer in agitated liquid-liquid systems

In this paper data are reported on 180 area-free, continuous-phase mass-transfer coefficients for 9 turbine-agitated liquid-liquid systems in baffled vessels. Criteria are established that identify the prevailing class of mass-transfer mechanisms for systems of intermediate or high interfacial tensi...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 1990-11, Vol.29 (11), p.2258-2267
Main Authors: Skelland, A. H. P, Moeti, L. T
Format: Article
Language:English
Subjects:
20 FOSSIL-FUELED POWER PLANTS
200101 - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems
420400 - Engineering- Heat Transfer & Fluid Flow
Applied sciences
BAFFLED TUBES
Chemical engineering
CONTROL EQUIPMENT
ENGINEERING
Exact sciences and technology
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
FLUIDS
Heat and mass transfer. Packings, plates
HEAT EXCHANGERS
INTERFACES
LIQUIDS
MACHINERY
MASS TRANSFER
MECHANICS
PRESSURE GRADIENTS
TUBES
TURBINES
TURBOMACHINERY
TURBULENT FLOW
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Summary:In this paper data are reported on 180 area-free, continuous-phase mass-transfer coefficients for 9 turbine-agitated liquid-liquid systems in baffled vessels. Criteria are established that identify the prevailing class of mass-transfer mechanisms for systems of intermediate or high interfacial tension with low {phi}---namely, k{sub c} {proportional to} D{sub c}{sup 2/3} {mu}{sub c}{sup {minus}1/3} N{sup 3/2}. It is also deduced that k{sub c} {proportional to} d{sub p}{sup 0} for the combined ranges of d{sub p}, {Delta}{rho}, and {mu}{sub c} investigated. A subsidiary result is the correlation of the k{sub c} values obtained, on the basis of local isotropic turbulence theory for the inertial subrange of eddy sizes.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie00107a010