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An innovative pulsed column applied to solid-liquid contacting: the BPC column

Brunet, Léna and Prat, Laurent E. and Casamatta, Gilbert and Carvin, Philippe An innovative pulsed column applied to solid-liquid contacting: the BPC column. (2006) Chemical Engineering and Technology, vol. 2 (n° 6). pp. 729-735. ISSN 0930-7516

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Official URL: http://dx.doi.org/10.1002/ceat.200500331

Abstract

The innovative process presented is a novel type of pulsed column (BPC column) used as a solid/liquid contactor. An evolution in the design of the internals and in the shape of the pulsation has been set up. The initial objectives were to achieve a reactor of greatly longer solid residence time, independently of the liquid phase. Phase contacting is carried out in a 1.5 m height column. Liquid and solid are flowing countercurrently. Solid is fed in at the bottom of the column and flows upwardly, whatever the density difference between both phases. The behaviour of solid and liquid phases was investigated through the analysis of residence time distributions. The working conditions range has been determined and it was found that an optimal tuning of the operating conditions (pulsation parameters, flows control…) could minimize the influence of the size and the density of particles and uncouple residence times of both phases. The column has been manufactured, in order to handle a large range of solid-liquid systems (solid treatment, purification or reaction, raw materials, floating or dense particles, polydispersed particles). On the basis of the model calculations and design considerations, preliminary data can be given on the technical and economical feasibility of the various applications quoted above. The final aim of this study is to prove that, for a fixed production rate and a product quality, the new column can satisfy the specifications required and even exceed them.

Item Type:Article
Additional Information:This publication is available on http://www3.interscience.wiley.com/journal/10008333/home
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Rhodia (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS) - Procédés pour la Chimie Fine
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Deposited By:Laurent PRAT

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