Results 221 to 230 of about 12,368 (258)
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A correlation for dispersed phase axial mixing coefficients in rotating disc contactors
Journal of Chemical Technology & Biotechnology, 2005AbstractA correlation for the estimation of dispersed phase axial mixing coefficients in terms of all the operating and fundamental variables was established. The proposed correlations are found to be a good representation of the present data (260 data points) obtained using four liquid‐liquid systems from two different sources.
Thanapalan Murugesan, Iyyasami Regupathi
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MEASUREMENT OF AXIAL DISPERSION COEFFICIENT IN A PACKED BED USING X-RAY
Materials and Manufacturing Processes, 2002Dispersion of the liquid in a porous media is of great importance in many areas of engineering and has been studied by several researchers so far. A new experimental method has been developed to measure the dispersion coefficient. X-ray absorption technique provides a better understanding of dispersion that characterizes the mixing phenomenon in the ...
Basavaraj, MG, Gupta, GS
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Industrial & Engineering Chemistry Research, 1996
Axial dispersion coefficients of squalene, benzoic acid, and oleic acid were measured in packed beds using supercritical carbon dioxide as a solvent over the temperature range 313−333 K, pressure range 100−300 bar, and Reynolds number range 2−80. Measurements were performed under both horizontal and vertical flow conditions, using a variety of particle
Owen J. Catchpole +2 more
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Axial dispersion coefficients of squalene, benzoic acid, and oleic acid were measured in packed beds using supercritical carbon dioxide as a solvent over the temperature range 313−333 K, pressure range 100−300 bar, and Reynolds number range 2−80. Measurements were performed under both horizontal and vertical flow conditions, using a variety of particle
Owen J. Catchpole +2 more
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Revue Générale de Thermique, 1998
An extended temperature oscillation measurement technique based on the axial dispersion model is proposed for the determination of both heat transfer coefficients and axial dispersion coefficients in heat exchangers. The test technique uses a sinusoidal inlet temperature variation which is realized with a computer controlled compact electric heater ...
Wilfried Roetzel, Xing Luo
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An extended temperature oscillation measurement technique based on the axial dispersion model is proposed for the determination of both heat transfer coefficients and axial dispersion coefficients in heat exchangers. The test technique uses a sinusoidal inlet temperature variation which is realized with a computer controlled compact electric heater ...
Wilfried Roetzel, Xing Luo
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Variation of the local effective axial dispersion coefficient with bed height in expanded beds
Chemical Engineering Journal, 2005Abstract The local axial dispersion characteristics are very important and fundamental for the analyzing, modeling and understanding of biomolecules adsorption performance in expanded bed adsorption. In this work, the local effective axial dispersion coefficients along the bed height of an expanded bed system with porous adsorbent particles ...
Junxian Yun +2 more
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Measurement of the axial dispersion coefficient of cohesive powders in rotary kilns
2016While continuous rotary calcination is a widely used thermal treatment in large-scale catalyst manufacturing, fundamental understanding of the process is absent from scientific literature. Thus, the goal of this research is to improve fundamental understanding of rotary calcination processes to aid in scale-up.
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Gas‐bubble hold‐up and axial dispersion coefficient of emulsion phases in fluidized beds
The Canadian Journal of Chemical Engineering, 1987AbstractA model for liquid mixing in a gas‐liquid bubble column is extended to predict gas‐bubble hold‐up and axial dispersion coefficient of emulsion phases in fluidized beds. Reasonable agreement is found between the proposed model which includes no adjustable parameter and the available experimental data and correlations.
Y. Kawase, M. Moo‐Young
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Turbulent axial dispersion coefficients in the liquid in a two‐phase bubble column
AIChE Journal, 1984Formulation d'un modele simple permettant d'evaluer le coefficient de diffusion axiale turbulente dans une colonne a bulles ...
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The Chemical Engineering Journal, 1973
Abstract The simplest way of testing flow systems for non-ideal flow behaviour is based on the axially dispersed plug-flow model. A very simple experimental technique involves manually injecting a dose of tracer into the system and following the resulting response(s) down-stream. A method is proposed using a general description fitting to such pulses
M. Šáchová, Z. Štěrbáček
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Abstract The simplest way of testing flow systems for non-ideal flow behaviour is based on the axially dispersed plug-flow model. A very simple experimental technique involves manually injecting a dose of tracer into the system and following the resulting response(s) down-stream. A method is proposed using a general description fitting to such pulses
M. Šáchová, Z. Štěrbáček
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Experimental Thermal and Fluid Science, 2017
Abstract The aim of the present work is to propose a simple, reliable and effective model of hydrodynamics in fluidized bed reactor (FBR). The long-term objective of these models is to be able to use them for modeling and optimization of adsorption processes in fluidized bed columns.
Khaled, Ghozlane +5 more
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Abstract The aim of the present work is to propose a simple, reliable and effective model of hydrodynamics in fluidized bed reactor (FBR). The long-term objective of these models is to be able to use them for modeling and optimization of adsorption processes in fluidized bed columns.
Khaled, Ghozlane +5 more
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