Journal ArticleDOI
A correlation for interfacial area in co-current gas-liquid downflow through packed beds
TLDR
In this article, the interfacial area in cocurrent gas-liquid downflow through packed beds is correlated taking into consideration the physical properties of the fluids and the power dissipation in the system.Abstract:
Interfacial area in cocurrent gas-liquid downflow through packed beds is correlated taking into consideration the physical properties of the fluids and the power dissipation in the system. The correlation is tested with the experimental data covering a wide range in system variables including low and high porosity packings, the flow rates of the phases and their physical properties.read more
Citations
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Multiphase catalytic reactors: a perspective on current knowledge and future trends
TL;DR: In this paper, a review of the physical parameters for various multiphase reactors is presented, focusing on gas-phase catalyzed processes with an emphasis on unsteady state operation.
Journal ArticleDOI
Double‐slit model for partially wetted trickle flow hydrodynamics
TL;DR: In this paper, a double-slit model was developed to predict the frictional two-phase pressure drop, external liquid holdup, pellet-scale external wetting efficiency, and gas-liquid interfacial area in cocurrent downflow trickle-bed reactors operated under partially wetted conditions in the trickle flow regime.
Journal ArticleDOI
Gas}liquid interfacial mass transfer in trickle-bed reactors: state-of-the-art correlations
TL;DR: In this article, the state-of-the-art of the gas-liquid mass transfer characteristics in trickle-bed reactors was summarized and its quantification methods were reevaluated based on a wide-ranging data base of some 3200 measurements.
Journal ArticleDOI
Heat and Mass Transfer in Cocurrent Gas−Liquid Packed Beds. Analysis, Recommendations, and New Correlations
TL;DR: In this paper, a set of reliable correlations has been recommended for the prediction of the gas−liquid interfacial area (agl), the volumetric liquid- (kla) and gas-side (kga) mass-transfer coefficients, the wall heat-transfer coefficient (hw), the bed effective radial thermal conductivity (λe), and the particle-to-fluid heat transfer coefficient (hp).
Journal ArticleDOI
Gas-liquid interfacial mass transfer in trickle-bed reactors at elevated pressures
TL;DR: A phenomenological description and a semi-empirical two-zone model for the gas−liquid interfacial areas and the volumetric liquid-side mass-transfer coefficients in cocurrent downflow t... is proposed in this article.
References
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Journal ArticleDOI
Mass transfer in packed columns: co-current (downflow) operation: 1 in. and 1.5 in. metal pall rings and ceramic intalox saddles: multifilament gauze packings in 20 cm and 38 cm i.d. columns
TL;DR: In this article, the theory of gas absorption accompanied by fast pseudo-m th order reaction was used to obtain values of effective interfacial area, a, in 20 and 38 cm i.d. packed columns which were operated co-currently (downflow).
Journal ArticleDOI
A model for the pressure drop in gas—liquid cocurrent downflow through packed beds
TL;DR: In this article, a model for gas flow through packed beds is proposed for gas, which divides the total voidage of the bed into internal and external voidage and appropriately distributes the total liquid holdup into internal holdup.
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Interfacial area in trickle-bed reactors: Comparison between ionic and organic liquids and between Raschig rings and small diameter particles
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Mass transfer coefficients in a trickle-bed reactor with high and low viscosity organic solutions
TL;DR: In this paper, an empirical correlation for predicting kLa values in trickling flow regime was proposed, where the measured kLa, ΔP/Z and β values for viscous solutions were about four times those observed for low-viscosity organic solutions.
Journal ArticleDOI
Effective interfacial area in gas-liquid cocurrent downflow through packed beds
TL;DR: In this article, the effective interfacial area in cocurrent gas-liquid downflow through packed beds is analyzed taking into consideration the specific surface of the packing and the interdispersion of the phases.