The variation of gas holdup, the liquid circulation velocity and fluidization characteristics of polystyrene particles in inverse fluidized bed were observed by varying the gas flow rate. The relationship between the superficial gas velocity and the g...
The variation of gas holdup, the liquid circulation velocity and fluidization characteristics of polystyrene particles in inverse fluidized bed were observed by varying the gas flow rate. The relationship between the superficial gas velocity and the gas holdup was found as ε_(gr)=0.056U_(gr) which showed similar to the Chisti model. The liquid circulation velocity was measured directly and gave good relationship with those physical properties of particle and circulating fluid. Since Archimedes number, Ar, and Reynolds number at the minimum fluidization velocity, Re_(mf) appeared to give the relationship of Re_(mf)=0.0018Ar+18.76, the minimum fluidization velocity could be predicted with the informations of physical properties of particle and fluid involved in the bed.