Effects of mass transfer on the hydrodynamic behavior of a Karr reciprocating plate column

Journal Article · Thu Apr 01 04:00:00 EST 1999 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie980605s· OSTI ID:345354

Aravamudan, K; Baird, M H.I. ^[1]

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1. McMaster Univ., Hamilton, Ontario (Canada). Dept. of Chemical Engineering

A 5 cm internal diameter Karr reciprocating plate column has been operated in countercurrent liquid-liquid flow in the absence of mass transfer and with mass transfer of i-propanol from the dispersed phase (Isopar M) to the continuous phase (water). The effect of mass transfer is to increase the drop diameter, while the holdup is reduced and axial dispersion is increased. Although an unstable density gradient was created by the mass-transfer process, earlier models developed under non-mass-transfer conditions, based on Kolmogoroff`s isotropic turbulence theory, were not applicable in describing the enhancement in axial mixing. It was concluded that the density gradient effect was masked by the effect of the larger drops which were formed because of mass-transfer-induced coalescence. Mass-transfer coefficients for the dispersed phase were found to show the same trends as the Handlos and Baron oscillating drop model.

• OSTI ID: 345354
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 4 Vol. 38; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DISTILLATION EQUIPMENT
EXTRACTION COLUMNS
HYDRODYNAMICS
MASS TRANSFER
MATHEMATICAL MODELS
PROPANOLS