Concepts for the simulation of wall-catalyzed reactions in microchannel reactors with mesopores in the wall region

The realization of reactions in microchannel reactors demands apart from op timal process conditions also a useful geometric layout of the apparatus. I nformation about the usefulness of the geometry is available through the si mulation of the concentrations and the temperature field and their evaluati on. Although the mesopores used in microchannel reactors are very regular, the discrepancies between channel and pore dimensions are very large and so , a simultaneous numerical calculation of the entire reactor is neither mea ningful nor possible. Therefore, in this paper, an effective kinetics for i sothermal reactions considering the diffusional mass flow through the pore mouth is introduced. Still, numerical calculations are very expensive and h ave the disadvantage that the influence of the individual parameters is see n only by a lot of calculations with changed parameters. That's why a surve y of cases with analytical solutions and with Other concepts (using mass tr ansfer coefficients, effectiveness factors, etc.) is given, too.