Hydrodynamics and stability of slot-rectangular spouted beds - Part II: Increasing bed thickness

Tests were carried out with rectangular spouted bed columns of different th ickness, i.e., front-to-back dimension, while holding the column width and air-entry slot width constant, to investigate the effects on spout stabilit y and bed hydrodynamics. For the three sizes of glass beads and one size of polyethylene beads examined, increasing the column thickness led to three- dimensional effects, such as formation of multiple spouts, and affected suc h hydrodynamics variables as the minimum spouting velocity, maximum spoutab le bed depth and maximum pressure drop.