I. Hydrodynamic model selection for counter diffusing systems: A selectivity study in mass transfer with non-linear chemical kinetics. II. Effect of catalyst poisoning on selectivity: A modelless approach. III. Selectivity optimisation for complex non-linear reaction schemes. IV. Reactor simulation for the hydrogen fluoride reaction: Fluorspar + sulphuric acid products

Abstract

A two step non-linear complex reaction scheme 2M1→2M2→M3 has been used to establish the need for a careful selection of a mass transfer model for counter diffusing systems. By comparing the Penetration Theory and Film Theory selectivity parameters, it is shown that the two fluid-mechanical models do not predict the same results. It is also shown that the deviations between the results predicted by the two models do not appear to be directly related to increasing complexity in the reaction kinectics. In addition, the effect of reaction order on the selectivity parameter, has been examined by varying the order of the second step reaction