Journal ArticleDOI
Liquid dispersion in gas—liquid fluidized beds: Part I: Axial dispersion. The axially dispersed plug-flow model
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In this paper, axially dispersed plug-flow model was used to determine axial dispersion coefficients in the liquid phase of gas-liquid (three-phase) fluidized beds.About:
This article is published in Chemical Engineering Journal.The article was published on 1979-01-01. It has received 28 citations till now. The article focuses on the topics: Dispersion (chemistry) & Particle size.read more
Citations
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Journal ArticleDOI
Heat transfer characteristics of three phase fluidized beds
TL;DR: In this article, the heat transfer characteristics of two and three phase fluidized beds have been studied in a 15.2 cm-ID column fitted with an axially mounted cylindrical healer.
Journal ArticleDOI
Axial liquid mixing in liquid—solid and gas—liquid—solid fluidized beds containing low density particles☆
Wen-Tzung Tang,Liang-Shih Fan +1 more
TL;DR: In this paper, axial dispersion coefficients in liquid and gas solid fluidized beds of low density particles were measured and analyzed, and the extent of axial liquid mixing in both systems was significantly less that that in beds of heavy particles.
Journal ArticleDOI
Wall‐to‐bed heat transfer in liquid—solid and gas—liquid—solid fluidized beds part I: Liquid—solid fluidized beds
TL;DR: In this paper, the effect of particle size and particle density upon the wall-to-bed heat transfer characteristics in liquid-solid fluidized beds with a 95.6 mm column diameter over a wide range of operating conditions was investigated.
Journal ArticleDOI
Studies on the expansion characteristics of fluidised beds with silica-based adsorbents used in protein purification☆
TL;DR: The results confirm that the optimisation of the dynamic capacities as well as the dynamic adsorption rates of adsorbents in expanded-bed systems must take into account column design characteristics aswell as the physical/chemical features of the adsorbent particles, if the highest productivities of expanded- bed/fluidisation procedures are to be achieved with crude feedstocks from biotechnological applications.
Journal ArticleDOI
Wall-to-bed heat transfer coefficient in gas—liquid—solid fluidized beds
TL;DR: In this paper, the axial dispersion model concept was used to evaluate the wall-to-bed heat transfer in three-phase fluidized beds with a cocurrent up-flow of water and air.
References
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Journal ArticleDOI
Hold-up and axial mixing characteristics of two and three phase fluidized beds
TL;DR: In this paper, the hydrodynamics of two (water-air, water-solids) and three phase fluidized beds have been studied in a large two-dimensional column.
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On the use of the imperfect tracer pulse method for determination of hold-up and axial mixing†
K. Øsstergaard,M. L. Michelsen +1 more
TL;DR: In this article, the authors discussed two problems connected with reduction of the experimental data obtained in such studies and proposed a semi-empirical method for correction of experimental data in such cases.
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Boundary conditions of liquid phase reactors with axial dispersion
TL;DR: In this article, an experimental study of an isothermal liquid phase reactor divided into sections with different properties reveals that no back effect can be found as would be predicted by the application of Wehner and Wilhelm's boundary conditions.
Journal ArticleDOI
Liquid dispersion in gas—liquid fluidized beds
TL;DR: In this paper, the radial and axial dispersion coefficients of cocurrent, liquid-supported, gas-fluidized beds were evaluated from radial concentration profiles downstream of a point-source, steady state tracer injector.
Journal ArticleDOI
Eigenschaften von Dreiphasen-Fließbetten mit Gleichstrom von Wasser und Luft☆
A.S. Afschar,K. Schügerl +1 more
TL;DR: In this paper, the axialen and radialen Konzentrationsprofile in beiden Phasen wurden stromaufwarts einer stationaren Quelle gemessen, durch Anwendung eines Zweiphasen-Diffusionsmodells die Bodenstein-Zahlen, die Koeffizienten der Ruckvermischung and die AustauschkoeffIZienten bestimmt and with Ergebnissen verglichen, die in einer Blasensaule ohne Quar