Results 211 to 220 of about 29,070 (268)

Bubble Column Reactors

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Nigar Kantarci, Fahir Borak, Kutlu O. Ulgen   +2 more
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Bubble size distribution in bubble columns

The Canadian Journal of Chemical Engineering, 1990
AbstractThe bubble size distributions are measured for the air‐water system as a function of air velocity at room temperature in two bubble columns. High speed cinephotography and fiber optic probe techniques are used to measure the bubble size. Our limited measurements suggest that the bubble size may be independent of gas velocity in the range 3.6 to
A. C. Saxena, N. S. Rao, S. C. Saxena
openaire   +1 more source

Bubble Formation and Coalescence in Bubble Columns

Chemie Ingenieur Technik, 1989
Etude du mecanisme de formation et de coalescence des bulles au niveau d'orifices simples et triples immerges dans de l'eau dans une colonne bidimensionnelle.
Mohammad Jamialahmadi, Hans Müller‐Steinhagen   +1 more
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Understanding bubble hydrodynamics in bubble columns

Experimental Thermal and Fluid Science, 2013
Abstract Compared to conventional gas–liquid bubble columns, gas–liquid columns including both gas and liquid flows have been investigated less due to their complex hydrodynamics and operational difficulties. In this study, simultaneous non-intrusive methods of column shell vibration and pressure fluctuation measurements were coupled with direct ...
Amir Sheikhi, Rahmat Sotudeh-Gharebagh, Reza Zarghami, Navid Mostoufi, Mehrdad Alfi   +4 more
openaire   +1 more source

Bubble swarm characteristics in bubble columns

The Canadian Journal of Chemical Engineering, 1976
AbstractNew correlations have been proposed for estimation of gas phase holdup, characteristic velocity, interfacial area for mass transfer and mean bubble size of bubble swarms under dispersed and fluidized operation of bubble columns employing single — and multi‐orifice distributors.
Akhilesh Kumar, T. E. Degaleesan, G. S. Laddha, H. E. Hoelscher   +3 more
openaire   +1 more source

Coalescence efficiency of bubbles in bubble columns

The Canadian Journal of Chemical Engineering, 2011
AbstractBubble size distribution was modelled by employing the population balance equation (PBE). All three bubble coalescence mechanisms (turbulence, buoyancy and laminar shear) and the main bubble breakup mechanism (breakup due to turbulent eddies) were considered in the model.
Navid Bizmark, Navid Mostoufi, Mohammad‐Reza Mehrnia, Simin M. Zarringhalam, Aryan Yazdani   +4 more
openaire   +1 more source

Hydrodynamics in bubble columns

Chemical Engineering and Processing: Process Intensification, 1989
Abstract A heterogeneous fluid dynamic model has been developed to describe the complex flow structure of two-phase flow in bubble columns. The equation of continuity and the momentum balances are the basis of the model. The coupling of the two phases is performed by a force of interaction which is deduced by a force balance around a single rising ...
H.-E Gasche, Ch Edinger, H Kömpel, H Hofmann   +3 more
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Circulation in bubble columns

AIChE Journal, 1997
AbstractLiquid circulation in bubble columns influences many system properties such as mass transfer and catalyst dispersion. Conditions favorable for liquid circulation often exist only for highly turbulent slurries. Experiments under conditions of lowered surface tension proved conclusively that uniform circulation can exist even in the bubbly‐flow ...
L. F. Burns, R. G. Rice
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Bubble Behavior in Marine Applications of Bubble Columns: Case of Ellipsoidal Bubbles in Slanted and Rolling Columns

Industrial & Engineering Chemistry Research, 2019
Using a hexapod ship motion emulator, the influence of floating vessel motion on the trajectory and velocity profile of single ellipsoidal bubbles is investigated from the images provided by a high...
Carsten Drechsler, Amir Motamed Dashliborun, Seyed Mohammad Taghavi, David W. Agar, Faïçal Larachi   +4 more
openaire   +1 more source