Journal ArticleDOI
Capacity and efficiency of reactive distillation bale packing : Modeling and experimental validation
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In this article, the geometry of catalyst-containing bale packing is characterized and the calculated packing parameters (specific surface area and void fraction) are employed in conjunction with a model to predict two-phase pressure drop, maximum capacity, and height equivalent to a theoretical plate (HETP).Abstract:
The geometry of catalyst-containing bale packing is characterized in this paper. The calculated packing parameters (specific surface area and void fraction) are employed in conjunction with a model to predict two-phase pressure drop, maximum capacity, and height equivalent to a theoretical plate (HETP). Experimental data obtained in a 5.3-cm (2.1-in.) column, operated at total reflux, are presented for two systems (cyclohexane/n-heptane and acetone/methyl ethyl ketone) at pressures of 138 and 241 kPa (20 and 35 psia). Model predictions for pressure drop and HETP are validated with experimental data obtained under nonreactive conditions. An appropriate procedure for scaleup of HETP and pressure drop, with associated limitations, is also discussed.read more
Citations
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Journal ArticleDOI
Modelling reactive distillation
TL;DR: The design and operation issues for reactive distillation systems are considerably more complex than those involved for either conventional reactors or conventional distillation columns as discussed by the authors, and the introduction of an in situ separation function within the reaction zone leads to complex interactions between vapor-liquid equilibrium, vapor−liquid mass transfer, intra-catalyst diffusion, and chemical kinetics.
Journal ArticleDOI
Design Guidelines for Solid-Catalyzed Reactive Distillation Systems
Hoshang Subawalla,James R. Fair +1 more
TL;DR: In this article, the authors discuss design guidelines for solid-catalyzed reactive distillation systems, which form a part of a methodical design procedure that makes extensive use of both nonequilibrium (rate-based) and equilibrium-stage simulation models.
Journal ArticleDOI
Fluid dynamics in reactive distillation packing Katapak®-S
Peter Moritz,Hans Hasse +1 more
TL;DR: In this article, a model for predicting the flow regime in Katapak®-S is presented and successfully compared to experimental data, and experimental results for the residence time behavior and separation efficiency are presented and discussed.
Journal ArticleDOI
Reactive separations: more ways to skin a cat
TL;DR: In this article, the authors survey recent developments in reactive separations technology and emphasise the breadth of potential applications and possibilities for innovations, as well as the advantages of in-situ separation functions.
Journal ArticleDOI
Hydrodynamic and mass transfer efficiency of ceramic foam packing applied to distillation
TL;DR: In this paper, the authors describe the application of ceramic foam to distillation and develop a set of correlations describing pressure drop and liquid hold-up in terms of a dimensionless number.
References
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Journal ArticleDOI
Distillation Columns Containing Structured Packings: A Comprehensive Model for Their Performance. 2. Mass-Transfer Model
TL;DR: In this paper, a mass transfer model was proposed for a variety of commercial structured packings for distillation column service with distillation pressures ranging from 0.33 to 20.4 bar.
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Distillation columns containing structured packings: a comprehensive model for their performance. 1. Hydraulic models
TL;DR: In this article, a mechanistically-based model has been developed to aid the analysis and design of distillation columns containing structured packings of the corrugated plate type, which encompasses the important, and related, parameters of liquid holdup, pressure drop, flooding, and mass transfer efficiency.
Journal Article
Mass transfer in gauze packings
TL;DR: This paper met au point de nouvelles equations for refleter l'efficacite des donnees transferts de masse pour les garnissages en toiles metalliques lorsque l'on se trouve dans les conditions de distillation.
Journal ArticleDOI
General model for prediction of pressure drop and capacity of countercurrent gas/liquid packed columns
TL;DR: In this article, a generalized model was developed for the prediction of pressure drop and flooding in packed columns in which gas and liquid flow countercurrently, and validated for a wide variety of packings, both random and structured.