CCT SANTA FE   20441
CENTRO CIENTIFICO TECNOLOGICO CONICET - SANTA FE
Centro Científico Tecnológico - CCT
congresos y reuniones científicas
Título:
Using Structural Models to Analyze and Predict Catalyzed Olefin-polymerization Behavior
Autor/es:
CHIOVETTA, MARIO G.
Lugar:
Maracaibo, Venezuela
Reunión:
Congreso; Primer Congreso Internacional Cientifico Tecnico de Ingeniería CICTI 2007; 2007
Institución organizadora:
Universidad del Zulia, Venezuela
Resumen:
Mathematical models based on a detailed representation of the particle structure (structural models) and of the support-catalyst morphology are discussed is terms of their ability to analyze the impact of supported-catalyst activities and reactor conditions on the polymer production efficiency. Three types of representations schemes are presented to follow the structural changes in the polymerizing particles. These models are used to predict temperature evolutions for the catalyst-polymer particles, as well as their growth during residence time in the reactor. Monomer concentration profiles in each particle are discussed as functions of time and the results used to establish the influence olefin transport has on the performance of the catalyst. Models are useful to represent several of the supports used in polyolefin catalysts. Starting with the basic, typical characteri­za­tion data for a given support, the initial catalyst structure can be supplied to the model as parameters reflecting close to reality the most important properties of the solid.            The models have proved to be an interesting and useful tool to represent the real conditions in a reactor and for specific catalysts.