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Partial Wetting in Trickle Bed Reactors: Measurements Techniques and Global Wetting Efficiency

Baussaron, Loïc and Julcour-Lebigue, Carine and Wilhelm, Anne-Marie and Boyer, Christophe and Delmas, Henri Partial Wetting in Trickle Bed Reactors: Measurements Techniques and Global Wetting Efficiency. (2007) Industrial & Engineering Chemistry Research, 46 (25). 8397-8405. ISSN 0888-5885

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Official URL: https://doi.org/10.1021/ie070030b


Three very different techniques for measuring the catalyst wetted fraction -or wetting efficiency- in trickle bed reactors have been carried out and compared. The first one based on pressure drop data performed successively in single gas then liquid phase, then in gas-liquid phase is experimentally very simple but did not result in meaningful wetting efficiency estimation. The other ones, based on RTD analysis and on dye adsorption on wetted surfaces, gave similar results, and were used to investigate different parameters: liquid velocity and gas molecular weight and pressure by RTD, liquid-solid interaction or affinity (contact angle) and particle shape and diameter by dye fixation. The main operating parameter is the liquid velocity while the effect of gas flow is very weak. Higher solid-liquid affinity (heptane versus water) improves wetting efficiency only at very low liquid velocity (<2·10-3 m/s).

Item Type:Article
HAL Id:hal-03481255
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > IFP Energies Nouvelles - IFPEN (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
Deposited On:23 Oct 2008 09:22

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