Journal ArticleDOI
A correlation for interfacial area in co-current gas-liquid downflow through packed beds
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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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Kinetic and Reactor Modeling of Catalytic Hydrotreatment of Vegetable Oils
TL;DR: In this paper, the development of mathematical models for the problem of bio-dieselization of vegetable oils has been studied in the context of renewable alternative to replace fossil fuels, and mathematical models have been developed.
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Modeling of Catalytic Fixed-Bed Reactors for Fuels Production by Fischer–Tropsch Synthesis
TL;DR: In this article, a comprehensive review of the various studies reported in the literature to date on the mathematical modeling of fixed-bed reactors for the production of fuels by the Fischer-Tropsch synthesis (FTS) was carried out.
Journal ArticleDOI
Design of 3D-printed structures for improved mass transfer and pressure drop in packed-bed reactors
TL;DR: In this paper, a 3D printed structure surround by randomly packed spherical particles is proposed to improve the interfacial gas-liquid area and reduce pressure drop in a packed-bed reactor.
Journal ArticleDOI
Hydrodynamic model of interfacial area for trickling flow in a packed bed
TL;DR: In this paper, a wavy annular flow model was developed by introducing the shape of waves in a thin liquid film to predict local interfacial area in a packed bed under the trickling flow.
Proceedings ArticleDOI
Modeling of the Concurrent Gas-Liquid Trickling Flow Through a Packed-Bed Reactor to Predict Interfacial Area
TL;DR: In this paper, a wavy annular flow model is proposed to predict the local interfacial area between gas-liquid phases in a packed-bed, where the shape of waves in a thin liquid film is used to predict a local interface.
References
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Journal ArticleDOI
Hydrodynamics of two-phase cocurrent downflow through packed beds. Part I. Macroscopic model
TL;DR: In this article, a macroscopic model based on momentum balance is formulated for the condition of no radial pressure gradients, which includes the effect of bubble formation on the pressure drop and holdup and is compared with the experimental data of earlier investigators and of the present study.
Journal ArticleDOI
Pressure drop in gas‐liquid downflow through packed beds
P. S. T. Sai,Y. B. G. Varma +1 more
TL;DR: In this paper, pressure drop in cocurrent gas-liquid downflow through packed beds was experimentally measured for nonfoaming, foaming Newtonian, and non-Newtonian liquids.
Journal ArticleDOI
Interfacial area and boundary of hydrodynamic flow region in packed column with cocurrent downward flow.
TL;DR: In this paper, an empirical equation of liquid holdup and interfacial areas was presented in terms of Reynolds numbers of gas Reg( =dsGg/μg) and liquid Rel, surface shape factor of packing φ, void fraction e and ratio of packing to column diameter dp/T, where the ratio is smaller than 0.13.
Journal ArticleDOI
Flow pattern of the phases and liquid saturation in gas‐liquid concurrent downflow through packed beds
P. S. T. Sai,Y. B. G. Varma +1 more
TL;DR: In this article, a flow pattern was visually observed for non-foaming and foaming Newtonian and non-Newtonian liquids under concurrent downflow with air in packed beds using different configurations of column geometry and packins.