On dynamic liquid holdup determination by the drainage method

A careful examination of the liquid drainage in packed-bed reactors using liquid superficial velocities characteristic of trickle flow regime and no gas velocity is both experimentally and theoretically carried out. True free-flowing or dynamic liquid holdups are determined in two different reactors...

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Detalles Bibliográficos
Autores principales:	Urrutia, G., Bonelli, P., Cassanello, M.C., Cukierman, A.L.
Formato:	JOUR
Materias:	drainage hold-up packed beds Fluid dynamics Laminar flow Mathematical models Packed beds Particles (particulate matter) Viscosity of liquids Dynamic liquid holdup Liquid superficial velocities Trickle flow Chemical reactors
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00092509_v51_n15_p3721_Urrutia
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00092509_v51_n15_p3721_Urrutia
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spelling	todo:paper_00092509_v51_n15_p3721_Urrutia2023-10-03T14:08:05Z On dynamic liquid holdup determination by the drainage method Urrutia, G. Bonelli, P. Cassanello, M.C. Cukierman, A.L. drainage hold-up packed beds Fluid dynamics Laminar flow Mathematical models Packed beds Particles (particulate matter) Viscosity of liquids Dynamic liquid holdup Liquid superficial velocities Trickle flow Chemical reactors A careful examination of the liquid drainage in packed-bed reactors using liquid superficial velocities characteristic of trickle flow regime and no gas velocity is both experimentally and theoretically carried out. True free-flowing or dynamic liquid holdups are determined in two different reactors packed with porous and nonporous particles employing several liquids. Dynamic liquid holdups are shown to be higher than those determined directly from total liquid drained volumes, which are usually reported when the drainage method is applied. It is found that a model of laminar liquid films properly addresses the influence of liquid superficial velocities and of liquid viscosity on the dynamic liquid holdup within the experimental conditions studied. A simple quantitative phenomenological model to describe the drainage kinetics is developed and is independently verified from experimental data. Satisfactory agreement is found for all the examined conditions. Fil:Bonelli, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cassanello, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cukierman, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00092509_v51_n15_p3721_Urrutia
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	drainage hold-up packed beds Fluid dynamics Laminar flow Mathematical models Packed beds Particles (particulate matter) Viscosity of liquids Dynamic liquid holdup Liquid superficial velocities Trickle flow Chemical reactors
spellingShingle	drainage hold-up packed beds Fluid dynamics Laminar flow Mathematical models Packed beds Particles (particulate matter) Viscosity of liquids Dynamic liquid holdup Liquid superficial velocities Trickle flow Chemical reactors Urrutia, G. Bonelli, P. Cassanello, M.C. Cukierman, A.L. On dynamic liquid holdup determination by the drainage method
topic_facet	drainage hold-up packed beds Fluid dynamics Laminar flow Mathematical models Packed beds Particles (particulate matter) Viscosity of liquids Dynamic liquid holdup Liquid superficial velocities Trickle flow Chemical reactors
description	A careful examination of the liquid drainage in packed-bed reactors using liquid superficial velocities characteristic of trickle flow regime and no gas velocity is both experimentally and theoretically carried out. True free-flowing or dynamic liquid holdups are determined in two different reactors packed with porous and nonporous particles employing several liquids. Dynamic liquid holdups are shown to be higher than those determined directly from total liquid drained volumes, which are usually reported when the drainage method is applied. It is found that a model of laminar liquid films properly addresses the influence of liquid superficial velocities and of liquid viscosity on the dynamic liquid holdup within the experimental conditions studied. A simple quantitative phenomenological model to describe the drainage kinetics is developed and is independently verified from experimental data. Satisfactory agreement is found for all the examined conditions.
format	JOUR
author	Urrutia, G. Bonelli, P. Cassanello, M.C. Cukierman, A.L.
author_facet	Urrutia, G. Bonelli, P. Cassanello, M.C. Cukierman, A.L.
author_sort	Urrutia, G.
title	On dynamic liquid holdup determination by the drainage method
title_short	On dynamic liquid holdup determination by the drainage method
title_full	On dynamic liquid holdup determination by the drainage method
title_fullStr	On dynamic liquid holdup determination by the drainage method
title_full_unstemmed	On dynamic liquid holdup determination by the drainage method
title_sort	on dynamic liquid holdup determination by the drainage method
url	http://hdl.handle.net/20.500.12110/paper_00092509_v51_n15_p3721_Urrutia
work_keys_str_mv	AT urrutiag ondynamicliquidholdupdeterminationbythedrainagemethod AT bonellip ondynamicliquidholdupdeterminationbythedrainagemethod AT cassanellomc ondynamicliquidholdupdeterminationbythedrainagemethod AT cukiermanal ondynamicliquidholdupdeterminationbythedrainagemethod
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On dynamic liquid holdup determination by the drainage method

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