Dynamical modelling of a reactive extrusion process: Focus on residence time distribution in a fully intermeshing co-rotating twin-screw extruder and application to an alginate extraction process
|Author(s)||Baron Regis2, Vauchel Peggy1, 3, Kaas Raymond2, Arhaliass Abdellah4, Legrand Jack4|
|Affiliation(s)||1 : USTL, Lab ProBioGEM, F-59650 Villeneuve Dascq, France.
2 : IFREMER, Dpt BRM, F-44311 Nantes 03, France.
3 : Univ Lille Nord France, F-59000 Lille, France.
4 : Univ Nantes, GEPEA, CNRS, UMR6144, F-44602 St Nazaire, France.
|Source||Chemical Engineering Science (0009-2509) (Pergamon-elsevier Science Ltd), 2010-05 , Vol. 65 , N. 10 , P. 3313-3321|
|WOS© Times Cited||14|
|Keyword(s)||Alginate, Extraction, Extrusion, Mathematical modelling, Residence time distribution, Simulation, Laminaria digitata|
|Abstract||The context of this study is the modelling of reactive extrusion process based on an alginate extraction protocol. Residence Time Distribution (RTD) is one important part to predict the kinetics of reactive compounds. A simple model is proposed to predict RTD in fully intermeshing co-rotating twin-screw extruders without reaction. This model, which can be easily extended to reactive case in a future work, is based on the extension of an axial dispersion model, including control parameters (screw speed and flow rate) and geometrical parameters (screw profile and die design). Simulations were performed for various operating and geometrical conditions so as to illustrate possibilities offered by the proposed model. Validation was conducted for two different extrusion applications, seaweed extrusion and polymer extrusion. This highlighted the model ability to predict RID for various kinds of materials after adjusting only one parameter thanks to a unique experimental RID curve. (C) 2010 Elsevier Ltd. All rights reserved.|