Authors
Abstract
This work studis the effect of liquid properties (water, solution 0.2-1.5 wt
% for each of i-propanol, and n-butanol), temperature (26-55 oC) and
superficial air velocity (1-15cm/s) on the gas holdup and mass transfer
coefficient in air-liquid dispersion column. The experimental procedure was
carried out by QVF column (10 cm i.d, 1.5 m height) and air bubbling by
multi-orifice distributor (2 mm, 49 holes in square pitch). The experimental
results are presented in two and three dimension graphs, these graphs
indicate, increases in holdup and mass transfer coefficient with increasing
weight percent of alcohols, temperature, and superficial velocity of air. The
gas holdup and mass transfer coefficient are in the following order
n-butanol > i-propanol > water. Also the experimental results were correlated
by fitting empirical correlations.
Some of the results have been correlated on the basis of drift flux model
in order to express the effect of surface active agent on radial uniformity flow
and gas holdup profiles
Keywords
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