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Dynamic Behaviour of a Continuous Heat Exchanger/Reactor after Flow Failure

Benaissa, Wassila and Elgue, Sébastien and Gabas, Nadine and Cabassud, Michel and Carson, Douglas and Demissy, Michel Dynamic Behaviour of a Continuous Heat Exchanger/Reactor after Flow Failure. (2008) International Journal of Chemical Reactor Engineering, vol. 6 . ISSN 1542-6580

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Official URL: http://www.bepress.com/ijcre/vol6/A23

Abstract

The intensified technologies offer new prospects for the development of hazardous chemical syntheses in safer conditions: the idea is to reduce the reaction volume by increasing the thermal performances and preferring the continuous mode to the batch one. In particular, the Open Plate Reactor (OPR) type “reactor/ exchanger” also including a modular block structure, matches these characteristics perfectly. The aim of this paper is to study the OPR behaviour during a normal operation, that is to say, after a stoppage of the circulation of the cooling fluid. So, an experiment was carried out, taking the oxidation of sodium thiosulfate with hydrogen peroxide as an example. The results obtained, in particular with regard to the evolution of the temperature profiles of the reaction medium as a function of time along the apparatus, are compared with those predicted by a dynamic simulator of the OPR. So, the average heat transfer coefficient regarding the “utility” fluid is evaluated in conductive and natural convection modes, and then integrated in the simulator. The conclusion of this study is that, during a cooling failure, a heat transfer by natural convection would be added to the conduction, which contributes to the intrinsically safer character of the apparatus.

Item Type:Article
Additional Information:Thanks to The Berkeley Electronic Press editor. The definitive version is available at http://www.bepress.com The original PDF of the article can be found at International Juornal of Chemical Reactor Engineering website : http://www.bepress.com/ijcre/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Institut National de l'Environnement Industriel et des Risques - INERIS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
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Deposited By: Hélène Dubernard
Deposited On:07 Nov 2008 13:16

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