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Modeling a Silicon CVD Spouted Bed Pilot Plant Reactor

By Juliana Piña, Veronica Bucala, Noemi Susana Schbib, Paul Ege and Hugo Ignacio de Lasa

Abstract

This study reports a comprehensive multiphase gas-solid dynamic mathematical model that successfully describes the batch growth of silicon particles in a CVD submerged spouted bed reactor. This multiphase reactor model takes into account the hydrodynamics and interphase mass exchange between the different fluidized bed regions (spout or grid zone, bubbles and emulsion phase) and uses applicable kinetic rate models to describe both heterogeneous and homogeneous reactions. The model also incorporates a population balance equation representing particle growth and agglomeration.The CVD submerged spouted bed reactor operation is simulated by means of a sequential modular procedure, which involves the solution of the reactor model and the population balance equation.It is shown that the proposed CVD multiphase reactor model successfully simulates experimental data obtained from batch operation in a pilot scale reactor at REC Silicon Inc. The modeling of experiments obtained for different operating conditions allows correlating the scavenging factor as a function of the silane concentration for short- and long-term operations.Fil: Piña, Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Bucala, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Schbib, Noemi Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Ege, Paul. REC Silicon Inc; Estados UnidosFil: de Lasa, Hugo Ignacio. University of Western Ontario; Canad

Topics: SILICON CVD, SPOUTED BED, GRANULATION, MODELLING, Ingeniería Química, Ingeniería Química, INGENIERÍAS Y TECNOLOGÍAS
Publisher: 'Walter de Gruyter GmbH'
Year: 2006
DOI identifier: 10.2202/1542-6580.1306
OAI identifier: oai:ri.conicet.gov.ar:11336/83552
Provided by: CONICET Digital
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