Model-based characterization of mili-reactor

Abstract

This thesis focuses on development of a functioning, reliable and representative computation fluid dynamics model of milli-reactors in OpenFOAM in order to characterize them. Characterization and validation of the model was done by residence time distribution analyses, where model data were compared with experimental measurements. The model was developed for Fluitec reactor with CSE-X4 static mixer elements with diameter of 21 mm. The residence time distribution was calculated for various flow conditions in the laminar flow regime. The model followed the experimental procedure where residence time distribution is measured by injection of tracer and evaluation of its concentration at the outlet from the reactor. The comparison of calculated and experimental integrated residence time distribution curves showed good agreement. Although, it would be possible to improve the model if more information of the experimental system were provided. It was also possible spot some dead zones inside the reactor, but the experimental data suggest that it was not successfully found all of them.