Table 6: Input data used in the semiempirical model based on Hory et al. [27].

Internal diameter of the riser column, D 0.102 m
Height of the secondary air injection, 0.9 m
Solids reflux ratio, 0.066
Operation temperature, 673 K
Operation pressure, 101.3 kPa
Voidage fraction bottom region of the riser, 0.9
Solid sphericity, 0.75

1Values supported by Basu [2].