Year: 2024
Type: article
Abstract: If the interest of heat exchanger/reactors have been demonstrated for homogeneous liquid phase applications, many chemical syntheses take place in multiphase media (gas-liquid, liquid-liquid, gas-liquid-solid...). Thus, in order to evaluate the versatility of a plate-type heat exchanger/reactor with a 2D-meandering millichannel, this work is focused on the characterization of hydrodynamics of liquid-liquid flow in the reaction channel. Therefore, several prototypes are built with millichannels of increasing dimensions to address the scale-up issue. Flow visualizations are performed with a high-speed camera; four flow regimes with octanol/water fluid system are observed: annular/plug, annular, annular/dispersed, and dispersed. The study shows that interfacial tension and dispersed phase inertia are the main forces driving the interface. A dimensionless map based on the dispersed phase Weber number as a function of the continuous phase internal Dean number is built up. This map turns out to be valid in the range (2 to 4mm) of the tested corrugated millichannel size.
Institutions: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire d’Innovation pour les Technologies des Énergies Nouvelles et les nanomatériaux, CEA Grenoble, Centre National de la Recherche Scientifique, Université Toulouse III - Paul Sabatier, Institut National Polytechnique de Toulouse, Laboratoire de Génie Chimique, Université de Toulouse
Language: English
Subfield: Fluid Flow and Transfer Processes
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,800
OpenAlex ID: W4393132013