Effect of surfactants on gas holdup of two-phase bubble columns
- Univ. of Puerto Rico, Dept. of Chemical Engineering (US)
- Univ. Simon Bolivar, Dept. de Termodinamica
- INTEVEP, S. A., Caracas (VE)
Two-phase experiments have been carried out using organic liquids with a surfactant and air in a bubble column 30 (cm) inside diameter and 3 (m) tall. Under the presence of the surfactant, two distinct regions are observed: a bubbling region is the lower part, and a froth zone in the upper part of the column. Intrinsic gas holdups were measured in each region. Results showed that intrinsic gas holdup did not change significantly with surfactant concentration. However, the position of the limiting surface separating the two regions varied considerably with surfactant concentration, thus affecting strongly the overall gas holdup. Based on the described experimental observations, correlations for intrinsic and overall gas holdups have been proposed. Intrinsic gas holdups have been correlated and a function of gas and liquid superficial velocities, and not as functions of surfactant concentration. Overall gas holdups have been expressed in terms of intrinsic gas holdup and of the fraction PHI of the column that is occupied by the froth region. The variable PHI is the one that has been correlated in terms of the surfactant concentration.
- OSTI ID:
- 5509333
- Report Number(s):
- CONF-880348-
- Resource Relation:
- Conference: American Institute of Chemical Engineers spring national meeting, New Orleans, LA (USA), 6-10 Mar 1988; Other Information: Technical Paper 9G
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANIC COMPOUNDS
BUBBLE GROWTH
AIR FLOW
CALCULATION METHODS
HYDRODYNAMICS
SURFACTANTS
FLUID FLOW
FLUID MECHANICS
GAS FLOW
MECHANICS
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