Modeling of a Three-Phase Continuously Operating Isothermal Packed-Bed Reactor: Kinetics, Mass-Transfer, and Dispersion Effects in the Hydrogenation of Citral

2011 ◽  
Vol 51 (26) ◽  
pp. 8858-8866 ◽  
Author(s):  
Teuvo Kilpiö ◽  
Päivi Mäki-Arvela ◽  
Mats Rönnholm ◽  
Victor Sifontes ◽  
Johan Wärnå ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Reactor Kinetics ◽  
Dispersion Effects ◽  
Three Phase

scholarly journals Three-phase packed bed reactor with an evaporating solvent—I. Experimental: the hydrogenation of 2,4,6-trinitrotoluene in methanol

1990 ◽  
Vol 45 (10) ◽  
pp. 3159-3170 ◽  
Author(s):  
K.B. van Gelder ◽  
J.K. Damhof ◽  
P.J. Kroijenga ◽  
K.R. Westerterp
Keyword(s):  
Packed Bed ◽  
Packed Bed Reactor ◽  
Three Phase

scholarly journals LIQUSD PHASE MASS TRANSFER IN PACKED BED REACTOR WITH COCURRENT GAS-LIQUID DOWNFLOW

1974 ◽  
Vol 7 (3) ◽  
pp. 187-192 ◽  
Author(s):  
TSUTOMU HIROSE ◽  
MIKIO TODA ◽  
YUJI SATO
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Packed Bed Reactor

scholarly journals Pre-purification of Plantago lanceolata extracts with biologically active compounds using yeast cells

2018 ◽  
Vol 11 (2) ◽  
pp. 163-169
Author(s):  
Vladimír Štefuca ◽  
Lukáš Rada ◽  
Alžbeta Chochulová ◽  
Michal Rosenberg
Keyword(s):  
Mass Transfer ◽  
Plantago Lanceolata ◽  
Packed Bed ◽  
Point Of View ◽  
Production Costs ◽  
Biologically Active ◽  
Effectiveness Factor ◽  
Packed Bed Reactor ◽  
Yeast Cells ◽  
Immobilized Cell

AbstractLeaves of the plantPlantago lanceolatacontain many economically interesting bioactive compounds, among them aucubin and catalpol are the most attractive. However, soluble saccharides passing to water extracts during isolation complicate chromatographic purification of these compounds. Their degradation by microbial cells transforming, for example, glucose, fructose, or sucrose to ethanol could bring important production costs savings and improved final product quality. It has been shown that the best saccharide degradation in extracts is achieved with theSaccharomyces cerevisiaecells. The cells were very active also in their immobilized form and they were able to completely remove glucose from the extract within four hours in a packed bed reactor combined with a stirring system with infinite medium recirculation.A simple mathematical model involving reaction kinetics and mass transfer limitations in the cell particles was proposed for the evaluation of cell effectiveness in their immobilized form in term of effectiveness factor. Values of the effectiveness factor calculated from the model were far below 1, indicating strong mass transfer limitations of the reaction. The model is suitable for optimization of preparation of immobilized cell particles, mainly from the point of view of cell charge in particles.

Selective hydrogenation of olefins with mass transfer control in a structured packed bed reactor

Fuel ◽  
2008 ◽  
Vol 87 (17-18) ◽  
pp. 3694-3705 ◽  
Author(s):  
R. Galiasso Tailleur ◽  
Jesus Hernandez ◽  
Alejandra Rojas
Keyword(s):  
Mass Transfer ◽  
Selective Hydrogenation ◽  
Packed Bed ◽  
Packed Bed Reactor
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