title: Computational-fluid-dynamics (CFD) modelling of an industrial crystallizer: application to the forced-circulation reactor.
abstract: The CFD (computational fluid dynamics) technique is used to describe the mixing conditions in a pilot-scale FCC (forced-circulation crystallizer) and to study the impact of flow rate and aspect ratio on local flow conditions and RTD (residence-time distribution) in the crystallizer. The analysis adequately predicts the oscillating flow and two-phase (gas-liquid) interaction at the free surface. A comparison has been made between the CFD predictions and models of RTD. The results support the use of CFD methodology as an aid to optimization of commercial-scale FCC design.
authors.affiliation: Anjou Recherche Veolia Water, Chemin de la Digue B.P. 76, 78603 Maisons Laffitte, France. karim.essemiani@generale-des-eaux.net
authors.forename: Karim
authors.initials: K
authors.lastname: Essemiani
authors.forename: Christelle
authors.initials: C
authors.lastname: de Traversay
authors.forename: Jean Claude
authors.initials: JC
authors.lastname: Gallot
mesh_terms: D005591:Chemical Fractionation / Q000295:instrumentation / Q000379:methods*; D002617:Chemical Industry / Q000295:instrumentation / Q000379:methods*; D003198:Computer Simulation; D017076:Computer-Aided Design; D003460:Crystallization / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017022:Flow Injection Analysis / Q000295:instrumentation / Q000379:methods*; D008956:Models, Chemical; D012212:Rheology / Q000295:instrumentation / Q000379:methods*