Terminal velocity of dense particles in the multisolid pneumatic transport bed

Hydrodynamic behavior of circulating fluidized bed with polymeric particles

“…It is seen that C,, is higher than that for a bed with fine P E particles alone at a given gas velocity, indicating that the fast fluidization regime can be achieved at higher solids circulation rates. These results are consistent with that of Satija and Fan (1985). They found that the terminal velocity of coarse particles in the airfine particle medium of a multisolid circulating fluidized bed is lower than that in the air medium alone and it monotonically decreases with increasing fine particle flow rates.…”

Simplified modeling of circulating flow of solids between a fluidized bed and a vertical pneumatic transport tube reactor connected by orifices

“…According to theoretical models described in literature [37,38] it seems that the terminal velocity and particle velocity of larger particles will be changed and the larger particles will be increasingly "lifted" by increasing mass flux of smaller particles in a riser. The effects of circulation mass flux of smaller particles on the flux of bigger particles have not been taken into consideration in modeling, because only relatively narrow size distributions of solids have been studied.…”

Flow Characteristics of Coal Ash in a Circulating Fluidized Bed

“…In a binary particle system, it was observed that the solids holdup of fine particles in a riser can be enhanced by the addition of coarse particles (Liu et al, 1979;Kitano et al, 1988;and Bi et al, 1992). The terminal velocity and minimum fluidization velocity of coarse particles are smaller in systems with fine particles (Satija and Fan, 1985;Na et al, 1996). Geldart and Pope (1983) observed an increase in the carry-over of coarse particles in the freeboard of a fluidized bed with fine particles.…”