Journal ArticleDOI
Gas–liquid interfacial areas in three-phase fixed bed reactors
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TLDR
In this paper, a simple model based on the theory of liquid emulsions is proposed to develop correlations suitable for estimating gas-liquid interfacial areas for the bubble flow regime in three-phase fixed bed reactors operated with gas and liquid flowing cocurrently upflow.Abstract:
A simple model, based on the theory of liquid emulsions, is proposed to develop correlations suitable for estimating gas–liquid interfacial areas for the bubble flow regime in three-phase fixed bed reactors operated with gas and liquid flowing cocurrently upflow. The model is also employed for trickle-bed reactors for estimating the increase in gas–liquid interfacial areas when these reactors are operated under high pressure conditions. It is found that developed correlations account satisfactorily for most of the data of gas–liquid interfacial areas available in the literature for cocurrent upflow three-phase fixed bed reactors and for trickle-bed reactors operated at high pressure conditions.read more
Citations
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Journal ArticleDOI
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
Immobilized cell systems for batch and continuous winemaking
TL;DR: The studies targeting the production of wine using these innovative fermentation systems aim to overcome limitations related to the product quality, the operational costs associated with the material used as support and the immobilization process itself.
References
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Book
An Introduction To Rheology
TL;DR: In this article, the authors discuss the importance of non-linearity solids and liquids rheology is a difficult subject for rheological research, and present some demonstrations of high extensional viscosity behaviour.
Journal ArticleDOI
The formation of emulsions in definable fields of flow
TL;DR: The physical and chemical condition of emulsions of two fluids which do not mix has been the subject of many studies, but very little seems to be known about the mechanics of the stirring processes which are used in making them.
Journal ArticleDOI
Fundamentals of the hydrodynamic mechanism of splitting in dispersion processes
TL;DR: In this paper, Taylor's experiments on the breakup of a drop in simple types of viscous flow, (b) breakup of an air stream, and (c) emulsification in a turbulent flow are studied.
Book
The Flow of Complex Mixtures in Pipes
TL;DR: The Flow Of Complex Mixtures (FOMM) as mentioned in this paper is a multiphase flow model for complex mixtures that is used in CFD Verification & Validation.
Journal ArticleDOI
An experimental investigation of drop deformation and breakup in steady, two-dimensional linear flows
B. J. Bentley,L. G. Leal +1 more
TL;DR: In this article, the deformation and burst of small fluid droplets in steady linear, two-dimensional motions of a second immiscible fluid were investigated using a computer-controlled, four-roll mill to investigate the effect of flow type.