Significance of the particle physical properties and the Geldart group in the use of correlations for the prediction of minimum fluidization velocity of biomass–sand binary mixtures

Abstract The present study explores the relevance of physical properties biomass particles on determination minimum fluidization velocity ( U mf ) binary mixtures. Fluidization experiments were performed in a cold flow unit with diverse biomasses mixed sand different mass fractions. Gas and pressure drop across bed used to determine . Different correlations reported literature evaluated their ability accurately predict Results showed satisfactory predictions when appropriately identifying according corresponding Geldart groups for particles. This perspective opens new possibilities toward generalization correlation factors helps improving accuracy prediction highly heterogeneous methodology also allows analysis mixtures which experimental approach is difficult, such as those including char particle, only requirement carefully measuring