Results 81 to 90 of about 844,904 (102)
, 2006 A microreactor has been developed to study the sensitivity of Methanol-To-Olefin (MTO) reaction to axial gas dispersion. It comprises a rectangular horizontal duct, 12.7 mm in height, 25.4 mm in width, variable in length, charged with a 1-mm-deep layer ...
Tshabalala, Samuel Nhlanganiso
core
New axial dispersion model for heat exchanger design
, 2011 The special case of unity dispersive Mach number of the hyperbolic axial dispersion model is investigated as the more realistic and simpler alternative to the parabolic model with zero Mach number. Simple corrections to the mean temperature difference or
Roetzel, Wilfried +2 more
core
A new numerical method for axial dispersion characterization in microreactors [PDF]
Chemical 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 +1 more
exaly +2 more sources
Experimental characterization of axial dispersion in coiled flow inverters [PDF]
Chemical Engineering Research and Design, 2017 Narrow residence time distributions (RTDs) are desirable in many chemical engineering processes. However, when a system operates in the laminar flow regime, significant fluid dynamic dispersion takes place.
Luca Mazzei +2 more
exaly +3 more sources
Effect of microchannel aspect ratio on residence time distributions and the axial dispersion coefficient [PDF]
Chemical Engineering and Processing: Process Intensification, 2009 The effect of microchannel aspect ratio (channel depth/channel width) on residence time distributions and the axial dispersion coefficient have been investigated for Newtonian and shear thinning non-Newtonian flow using computational fluid dynamics.
Joelle Aubin, Laurent Prat, C Xuereb
exaly +2 more sources
On the effect of tracer density on axial dispersion in a batch oscillatory baffled column
Chemical Engineering Journal, 2002 In this paper, we report our modelling evaluation on the effect of tracer density on axial dispersion in a batch oscillatory baffled column (OBC). Tracer solution of potassium nitrite, its specific density ranged from 1.0 to 1.5, was used in the study ...
Tony Howes, Xiongwei Ni
exaly +2 more sources
Axial and radial dispersion in rolling mode rotating drums
Powder 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, D J Parker, J P K Seville
exaly +2 more sources
DEM investigation of the axial dispersion behavior of a binary mixture in the rotating drum
Powder 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
Prediction of Axial Dispersion in Plug-Flow Reactors Using a Simple Method
Journal of Dispersion Science and Technology, 2012 In most full-scale plug-flow reactors, the flow usually is nonideal because of entrance and exit flow disturbances and axial dispersion. Axial dispersion refers to the degree of back mixing and molecular diffusion of fluid elements in the process stream ...
Alireza Bahadori
exaly +2 more sources
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Empirical correlations for axial dispersion coefficient and Peclet number in fixed-bed columns
Journal of Chromatography A, 2017Tingyue Gu, Seyed Omid Rastegar
exaly