Abstract

HOYOS, Bibian; CADAVID, Juan Guillermo  and  RANGEL, Hermes. Formulation and numeric calculation of non-isothermal effectiveness factor for finite cylindrical catalysts with bi-dimensional diffusion. Lat. Am. appl. res. [online]. 2004, vol.34, n.1, pp.17-22. ISSN 0327-0793.

A model for calculating the effectiveness factor and the concentration and temperature profiles for finite cylindrical either hollow or solid catalyst particles is presented. The model accounts for dispersion in both radial and axial directions and non-isothermal behavior. The resulting differential partial equations system is discretized by a centered finite difference method and a program written for the Excel^™ electronic sheet solves the highly nonlinear algebraic system. The numerical technique can be extended for any kinetic expression; for illustration, some results for n-th order reactions rate expressions are shown.

Keywords : Effectiveness Factor; Finite Cylindrical Catalysts; Bi-Dimensional Dispersion; Non-Isothermal Model.

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