Results 211 to 220 of about 31,431 (265)

Axial dispersion in a reciprocating plate column

The Canadian Journal of Chemical Engineering, 1996
AbstractAxial mixing in a reciprocating plate column with different amplitudes has been investigated for single‐phase and two‐phase (air‐water) systems. Experiments were performed in water in a semi‐batch scheme (no water flow) in a 1.26 m high and 101.6 mm internal diameter column.It was found that the axial dispersion coefficient is a strong function
Mustapha Lounes, Jules Thibault
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Axial dispersion in a rectangular bubble column

The Canadian Journal of Chemical Engineering, 1977
AbstractThis paper presents the results of an experimental study on the gas holdup and the liquid phase axial dispersion coefficient in a narrow packed and unpacked rectangular bubble column. In both cases the gas and liquid flow rates were varied and the data were obtained by employing standard tracer technique. The gas holdup and the axial dispersion
G. J. Stiegel, Y. T. Shah
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Dynamics Of Axially Dispersed Reactors

Industrial & Engineering Chemistry Research, 2008
Axially dispersed reactors with simultaneous convection, dispersion, and reaction might be used to approximate real reactors. While the steady-state solution to an axially dispersed reactor is well-described in the literature, its dynamic behavior is not often discussed.
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A numerical analysis of axial dispersion in electrolyzers

Electrochimica Acta, 1987
Abstract An efficient approximate numerical method based on the principle of orthogonal collocation is presented for the computation of steady-state and transient active-ion concentration profiles in electrolyzers with axial dispersion.
R.W. Yeo, T.Z. Fahidy
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Strömungsungleichverteilung und axiale Dispersion in Festbetten

Chemie Ingenieur Technik, 1989
Modelisation de l'ecoulement fluide solide dans un lit de particule. L'etude se fait aux echelles micro, meso et macroscopique a partir des donnees experimentales obtenues a l'aide d'un ...
Evangelos Tsotsas, Ernst‐Ulrich Schlünder   +1 more
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On axial dispersion in fixed beds

Chemical Engineering and Processing: Process Intensification, 1993
Abstract The primary purpose of this paper is to show that the criticisms by Tsotsas and Schlunder (1988) of an earlier paper (Gunn, 1969) are based upon elementary mathematical errors of the part of Tsotsas and Schlunder. A summary of experimental data on axial dispersion in liquids and gases shows that the dependence of the axial dispersion ...
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Axial Dispersion of Sedimented Colloids

Separation Science and Technology, 1982
Abstract After an ensemble of identical particles has had time to settle along the y-axis to their equilibrium distribution in a field of potential energy %oS(y) by gravity, but prevented from adsorbing by double-layer repulsion, their dispersion by Poiseuille flow between two horizontal plates is predicted. The residence-time distribution of particles
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Modelling the axial dispersion of particles in froths

International Journal of Mineral Processing, 2007
Abstract The separation achieved through flotation is dependent on the selective attachment of mineral particles to bubble surfaces. However, the majority of solids collected have been attributed to unattached particles. This is due to the release of attached particles from bubble surfaces due to bursting on the top of the froth and coalescence ...
J.R. Meloy, S.J. Neethling, J.J. Cilliers   +2 more
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Danckwerts' degree of segregation for the axial dispersion model

Chemical Engineering Science, 1991
Abstract Danckwerts' degree of segregation for the axial dispersion model has been calculated using some values of the Peclet number. The Monte Carlo technique has been applied to simulate a random walk, which is the discrete approximation of the axial dispersion model. The axial dispersion model's degree of mixing does not reach the state of maximum
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Axial dispersion in beds of small particles

The Chemical Engineering Journal, 1972
Abstract Axial dispersion coefficients (EA) in beds of small (0.1–1 mm) particles are often needed to interpret reaction rate data. A chromatographic technique was used to evaluate such coefficients for beds of porous catalyst particles and beds of non-porous glass beads over a wide range of velocities (Rep = 0. 00237 to 11.9).
Motoyuki Suzuki, J.M. Smith
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