GAS-LIQUID MASS-TRANSFER IN TRICKLE-BED REACTORS - GAS-SIDE MASS-TRANSFER

Citation
I. Iliuta et al., GAS-LIQUID MASS-TRANSFER IN TRICKLE-BED REACTORS - GAS-SIDE MASS-TRANSFER, Chemical engineering & technology, 20(9), 1997, pp. 589-595
Citations number
16
ISSN journal
09307516
Volume
20
Issue
9
Year of publication
1997
Pages
589 - 595
Database
ISI
SICI code
0930-7516(1997)20:9<589:GMITR->2.0.ZU;2-B
Abstract
New data of gas-liquid mass transfer for cocurrent downflow through pa cked beds of non-porous particles are presented. Mass transfer paramet ers for air/carbon dioxide/water and air/carbon dioxide/sodium hydroxi de systems were evaluated by least squares fit of the calculated CO2 c oncentration profiles in the gas phase to the experimental values. The dependence of k(G)a on gas and liquid flow rates is caused by the dep endence of gas-liquid interfacial area, not by the gas-side mass trans fer coefficient k(G). In the case of the absorption of dilute carbon d ioxide the gas-side resistance is considerably smaller than the liquid -side resistance. In the pulse flow regime, gas-liquid interfacial are a calculated from k(L)a and k(L) values obtained by physical, respecti vely, chemical absorption are lower than the gas-liquid interfacial ar ea evaluated from the measurements under reaction conditions.