Validation of DigiPac Simulations of packed columns using x-ray microtomography

in Mc Cann, H.; Johansen, G. A. (Eds.) Proceedings of the 5th World Congress on Industrial Process Tomography, Bergen, Norway, September 6-9, 2007 (2007, September)

Mesure de la distribution des phases dans une colonne de distillation réactive par tomographie à rayons X

in Récents Progrès en Génie des Procédés - N°95 - Actes des 5èmes Journées francophones sur les réacteurs gaz-liquide et gaz-liquide-solide, 12-15 juin 2007, Carry-le-Rouet, France (2007)

Modélisation d'un écoulement diphasique au sein d'un empilage structuré

in SFGP (Ed.) Récents Progrès en Génie des procédés - N°96 - Des réponses industrielles pour une société en mutation - Actes du 11ème Congrès de la Société française de Génie des procédés - 9-11 octobre 2007, Saint Etienne, France (2007)

In situ measurements of the static liquid holdup in Katapak-SP12 (TM) packed column using X-ray tomography

in Chemical Engineering Science (2007), 62(21), 6076-6080

Static liquid holdup was determined in situ, in a column packed with Katapak-SP12 (TM) elements, using a non-intrusive X-ray tomographic technique. Experiments were performed in a 10 cm diameter PVC ... [more ▼]

Static liquid holdup was determined in situ, in a column packed with Katapak-SP12 (TM) elements, using a non-intrusive X-ray tomographic technique. Experiments were performed in a 10 cm diameter PVC column with the air-water system. The technique allows a local determination of the various liquid holdup as well as of the capillary height, without dismantling the elements. Results are in good agreement with correlations proposed in the literature. (C) 2007 Elsevier Ltd. All rights reserved. [less ▲]

Application des techniques tomographiques en génie des procédés

Scientific conference (2006, October 26)

Study of organic and water vapours adsorption on carbon filters by X-ray microtomography

in Fourth International Symposium on Process Tomography in Poland, 2006, Varsóvia (2006, September)

Pd-Ag/SiO2 xerogel catalyst forming by impregnation on alumina foams

in Chemical Engineering Journal (2006), 117(1), 13-22

A Pd-Ag/SiO2 xerogel catalyst prepared in one step by sol-gel process has been entrapped in cylindrical porous alumina foams of three different pore sizes in order to shape the catalyst under the ... [more ▼]

A Pd-Ag/SiO2 xerogel catalyst prepared in one step by sol-gel process has been entrapped in cylindrical porous alumina foams of three different pore sizes in order to shape the catalyst under the appropriate form with suitable mechanical resistance to be used in an industrial fixed bed reactor. After drying, calcination and reduction, the Pd-Ag/SiO2 xerogel catalyst pellets are immobilized inside the open porosity of the alumina foam. The localization of the xerogel catalyst in the alumina foams has been studied by X-ray tomography. The three-dimensional porous structure was reconstructed from the consecutive cross-sections obtained by this technique. This method shows that the Pd-Ag/SiO2 xerogel catalyst is uniformly dispersed inside the porosity of the alumina foams. Activity and selectivity of Pd-Ag/SiO2 xerogel catalyst reference or catalyst entrapped in alumina foams have been studied for selective hydrodechlorination of 1,2-dichloroethane into ethylene. The specific reaction rate obtained with catalyst entrapped in alumina foams is smaller than the one obtained from corresponding catalyst powders. The catalytic activity decrease observed for Pd-Ag/SiO2 xerogel catalyst entrapped in porous alumina foams most probably arises from diffusional limitations inside the porous texture of the alumina foams. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

Techniques tomographiques : des outils de choix pour l’étude des réacteurs polyphasiques

Conference (2006, March 14)

Flow pattern characteristics in a stirred tank in presence of a non-Newtonian fluid and a rotor-stator mixer using particle image velocimetry

Poster (2006)

Liquid flow distribution in catalytic distillation columns : use of high-energy X-ray tomography

in AIChE (Ed.) AIChE Annual Meeting, Conference Proceedings, San Francisco, CA, United States, Nov. 12-17, 2006 (2006)