Results 141 to 150 of about 833,093 (205)

Axial diffusion effect on concentration dispersion

open access: yesInternational Journal of Heat and Mass Transfer, 2015
Abstract This work presents an analytical attempt to illustrate the effect of axial diffusion on concentration dispersion in packed tube flows. The concentration moment method is applied to derive the analytical solution for time-dependent Taylor dispersion coefficient.
Zi Wu, G Q Chen
exaly   +3 more sources

AXIAL DISPERSION IN THE ANNULAR BED REACTOR

Chemical Engineering Communications, 1984
The objective of the present work was to study the effects of axial dispersion on the behavior of the annular bed reactor using the methanation of carbon monoxide as the test reaction.
Mark E Davis
exaly   +2 more sources

A new numerical method for axial dispersion characterization in microreactors [PDF]

open access: yesChemical Engineering Science, 2017
Axial dispersion is a key phenomenon in reactor engineering that can affect yield and selectivity when reactions are carried out. Therefore its characterization is necessary for an adequate modelling of the reactor. The development of compact reactors to
Christophe Gourdon, Michel Cabassud
exaly   +2 more sources

DEM investigation of the axial dispersion behavior of a binary mixture in the rotating drum

open access: yesPowder Technology, 2018
The granular motion of binary-size mixture in a three-dimensional rotating drum operating in the rolling regime is numerically tracked via the discrete element method (DEM), with a focus on the axial dispersion behavior of the different particle types in
Kun Luo, Jia Wei Chew, Liangqi Zhang
exaly   +2 more sources

Axial dispersion in biofilters

Biochemical Engineering Journal, 1998
Abstract Biological destruction of toluene vapor from air streams was studied in a laboratory scale biofilter. The packing material (peat) used in the reactor was immobilized with acclimatized bacterial suspension. The original microbial consortium was obtained as an activated sludge suspension from a local waste water treatment plant.
S.M. Zarook, A.A. Shaikh, S.M. Azam
openaire   +1 more source

Axial dispersion in packed beds

Chemical Engineering Science, 1975
Abstract Behaviour of axial dispersion in packed beds is made clear from the properties of the equation of continuity. New dispersion data are added to relate liquid data with gas data in the Stokes flow regime. A special device to send a plane impulse of tracer liquor was developed.
Terukatsu Miyauchi, Tatsuji Kikuchi
openaire   +1 more source

Axial and radial dispersion in rolling mode rotating drums

open access: yesPowder Technology, 2005
Single particle trajectories, obtained using the Positron Emission Particle Tracking (PEPT) technique, have been used to characterise axial and radial dispersion of granular media in the rolling drum operated in batch and continuous mode.
Xianfeng Fan   +2 more
exaly   +2 more sources

Axial dispersion in aeration tanks

Water Quality Research Journal, 1966
Abstract The primary function of an aeration tank is to provide sufficient time, and a suitable environment for the assimilation of organics by micro-organisms. Initally assimilation occurs by a rapid absorption or adsorption process. After this initial contact-phenomena between the waste and micro-organisms, the biochemical reactions ...
Peter L. Timpany, Keith L. Murphy
openaire   +1 more source

The correlation of axial dispersion data

The Canadian Journal of Chemical Engineering, 1970
AbstractThe axial dispersion which occurs when a binary gas mixture flows through a bed of inert, non‐porous particles is well understood when the dispersion is dominated by either molecular diffusion or by turbulent mixing. In this paper consideration is given to the dispersion which occurs in the transition region between these two extremes of ...
M. F. Edwards, J. F. Richardson
openaire   +1 more source

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