Simulação de modelos bidimensionais de reatores cataliticos em leito fixo por elementos finitos

AUTOR(ES)
DATA DE PUBLICAÇÃO

1989

RESUMO

This work presents the modelling and simulation of the steady state two-dimensional model of packed-bed, non-adiabatic and non-isothermics countercurrent cooled reactors for the production of acetaldehyde, via the oxidation of ethanol over ironmolibdenium oxide catalyst, using the data and the rate equation presented in Maciel Filho s MsC Thesis [25]. The reactor model considered in this work consist of pseudo-homogeneous model (model I) and heterogeneous model (model II). In the heterogeneous model the transport process involved are: - intrareactor transport - through the voids betwen in the fixed beds - intraparticle transport - within the catalyst pellet . interphase transport - between the mainstream of fluid and the surface of the catalyst pellet. The systems of non-linear differential equations of the two models have been solved by finite element method and finite differences method. The performance of pseudo-homogeneous model has been compared to the heterogeneous model. The influence of the most important parameters has been elected wich enable us to choose the project s best operating conditions. An otimization has been carried out to the best productivity

ASSUNTO(S)

reatores quimicos

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