To improve reactor performance, the main focus of research is on the performance of the catalyst. However, the reactor performance is not only governed by the reaction rate over the catalyst. Generally, in multiphase flow systems, the heat and mass transfer processes affect the reactor performance. To obtain a more accurate predict of the accurate performance the effect of these heat and mass transfer should be taken into account.<br/>To model the local heat and mass transfer in reactors, particle or bubble scale Direct Numerical Simulations will be used. These simulations are able to predict the heat and mass transfer without any rigorous a priori assumptions. Therefore, these simulations are able to predict the heat and mass transfer coefficients for larger scale models, which are able to model the full reactor (coupled Computational Fluid Dynamics Discrete Element Methods and/or Multi Fluid approaches).<br/>In this presentation, the hydrodynamic interactions and the heat and mass transfer will be coupled. The obtained method will be validated for two phase interactions. Using these Direct Numerical Simulation methods, the effect of the heat and mass transfer limitations are modelled. In addition, the effect of fluid properties and the effect of the properties of particles, bubbles and droplets are determined. The obtained understanding can be used to improve the design and scale-up of these large-scale reactors. In addition, the closures obtained from the simulations can be used in larger scale models to accurately predict the overall mass and heat transport behavior in the reactor.<br/>

Limitations of heat and mass transfer processes in reactive gas-liquid-solid systems

256th National Meeting (2018)

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