Journal ArticleDOI
A model for the pressure drop in gas—liquid cocurrent downflow through packed beds
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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.About:
This article is published in Chemical Engineering Journal.The article was published on 1993-02-01. It has received 16 citations till now. The article focuses on the topics: Pressure drop.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
Local measurements of void fraction and liquid holdup in packed columns using x-ray computed tomography
TL;DR: In this paper, a tailor-made computed X-ray tomographic scanner has been developed as a tool for the analysis of the distribution of gas, liquid and solid phases in packed columns.
Journal ArticleDOI
Pressure buildup in gas-liquid flow through packed beds due to deposition of fine particles
TL;DR: In this article, a model suspension of kaolin clay in kerosene was used to understand the increase in pressure drop in hydrotreating reactors due to deposition of fine solids.
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Hydrodynamics of trickle bed reactors at high pressure: Two-phase flow model for pressure drop and liquid holdup, formulation and experimental validation
TL;DR: A large experimental database has been established at IFP on the same experimental setup to measure simultaneously pressure drop and liquid holdup in packed bed reactor operated in trickle for a large range of operating conditions.
Journal ArticleDOI
Biomass growth monitoring using pressure drop in a cocurrent biofilter
TL;DR: Under operating conditions with biomass, it was demonstrated that column clogging and the operating time between washing cycles can be predicted depending on the volumetric organic load for a given total organic carbon inlet concentration and an expression correlating biofilm density and biofilm thickness, as determined from the pressure drop measurements, was proposed.
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Journal Article
Proposed Correlation of Data for Isothermal Two-Phase, Two-Component Flow in Pipes
Journal ArticleDOI
hydrodynamic parameters for gas-liquid cocurrent flow in packed beds
TL;DR: In this article, the hydrodynamics of cocurrent gas-liquid flow in packed beds is analyzed by extending the concept of relative permeability to the inertial regime, where the relative permeabilities of the gas and liquid phases are functions of the saturation of the liquid phase.
Journal ArticleDOI
Pressure drop and liquid holdup for two-phase concurrent flow in packed beds
Vito Specchia,Giancarlo Baldi +1 more
TL;DR: In this paper, a correlation valid for a free liquid trickling, modified in order to take into account the effect of the pressure drop, is proposed and used to correlate liquid holdup in the presence of a concurrent gas flow.