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Pressure drop and axial dispersion in industrial millistructured heat exchange reactors

Moreau, Maxime and Di Miceli Raimondi, Nathalie and Le Sauze, Nathalie and Cabassud, Michel and Gourdon, Christophe Pressure drop and axial dispersion in industrial millistructured heat exchange reactors. (2015) Chemical Engineering and Processing: Process Intensification, 95. 54-62. ISSN 0255-2701

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.cep.2015.05.009


Hydrodynamic characterization by means of pressure drop and residence time distribution (RTD)experiments is performed in three millistructured heat exchange reactors: two Corning reactors (further referred to as Corning HP and Corning RT) and a Chart reactor. Pressure drop is measured for different flow rates and fluids. Fanning friction factor is then calculated and its evolution versus Reynolds number is plotted for each reactor, showing the influence of the geometrical characteristics of the reactors on this parameter. From RTD experiments, axial dispersion coefficients that allow calculating Péclet numbers are identified by solving the convection-dispersion equation. The results highlight plug flow behavior of these reactors for the range of flow rates studied. Péclet number in Corning HP remains constant in the range of Reynolds number studied. Its specific pattern is designed to generate mixing structures that allow homogenization of the tracer over the cross-section. It explains the plug flow behaviour of this reactor even at low Reynolds number but generates high pressure drop. Péclet number in Corning RT and Chart ShimTec1 increases with Reynolds number. This evolution is encountered for straight circular pipes in turbulent regime and confirms the pressure drop analysis.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at CEP: Process Intensification website : http://www.sciencedirect.com/science/journal/02552701/95
HAL Id:hal-01338169
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
ANR (Agence Nationale de la Recherche)
Deposited On:27 Jun 2016 08:47

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