Particle Residence Time Distribution in a Concurrent Multiphase Flow Reactor: Experiments and Euler-Lagrange Simulations

The present work focuses on investigating the residence time behavior of microparticles in a concurrent downer reactor through experiments and numerical simulations. For simulations, three-dimensional multiphase model was developed using Euler-Lagrange approach. were performed 0.8 m-long steel with gravitational particle injection. effects different operating conditions, e.g., sheath gas velocity distribution assessed. An increase flow rate led to decrease peak time, although maximum increased. Regarding lowest rate, particles’ twice as high compared within highest rate. curves presented broad coinciding size powder. results agreed experimental data; thus, this study presents for predicting reactor. Furthermore, simulations contributed better understanding inside which is essential optimizing thermal rounding processes. Dimensionless correlations observed are developed.