A CFB RISER WITH ULTRASOUND WAVES: ANALYSING SOLIDS DISPERSION AND PRESSURE DROP

CFB risers were employed in carbon capture to handle gas-solid flow. To improve solids distribution, this study aimed to investigate, applying CFD simulations, ultrasound waves in distinct configurations. Calcium oxide was fluidized by air with CO2. Results showed an improvement in particle dispersion by solid volume fraction contours and radial Péclet number. Pressure drop was also analyzed, demonstrating that ultrasound enhanced its effect on the local of application but improves it along the riser.