TY - JOUR ID - 165982 TI - Impact of Bed Loading on the Minimum Spouting Velocity of Polydisperse Simple-agglomerates in a Conical Fluidized Bed JO - Iranian Journal of Chemical Engineering(IJChE) JA - IJCHE LA - en SN - 1735-5397 AU - bahramian, A.R. AD - Hamedan University of Technology Y1 - 2022 PY - 2022 VL - 19 IS - 3 SP - 29 EP - 49 KW - Fluidization KW - Bed loading KW - Numerical modeling KW - Interparticle force KW - minimum spouting velocity KW - Conical Fluidized Bed DO - 10.22034/ijche.2023.363885.1458 N2 - The impact of bed loading on minimum spouting velocity (ums) of polydispersed TiO2 particles was studied in a conical fluidized bed. The experiments were performed at different bed loadings according to Gaussian and narrow-cut particle size distribution (PSD). The bed consisted of simple-agglomerates in size range of 30-90 µm belonging to Geldarts’ group A classification. The effect of PSD and interparticle force (IPF) on the predicted ums and hysteresis in the pressure profiles were studied through a combination of computational fluid dynamics and discrete element method (CFD-DEM). The experimental data showed that the choice of bed with Gaussian PSD-type led to more accurately predicting ums than the narrow-cut particle PSD. The impact of IPF on the expected ums became more critical than the PSD type because of an increase in bed loadings. The lowest deviations the results were obtained in the low bed loadings, which is confirmed the accuracy of simulation results. The simultaneous effects of PSD-type and IPF led to a change in the fluidization behavior of the bed. The bed with narrow-cut PSD has a hydrodynamic behavior similar to spouting and slugging regimes, while the fluidization quality of the bed improves by fine particles. UR - https://www.ijche.com/article_165982.html L1 - https://www.ijche.com/article_165982_8fabcc939db58e17afb2c7f948707cdc.pdf ER -