Spout geometry in shallow spouted beds

The effect of the operating conditions (base angle,, gas inlet diameter, st agnant bed height, particle diameter, and gas velocity) on spout geometry h as been studied in shallow spouted beds by means of an optical fiber probe. The experimental results have been fitted to an empirical equation for cal culation of the average spout diameter in shallow spouted beds. The propose d equation takes into account the effect of base angle and gas inlet diamet er, which are parameters that have not been previously taken into account i n the literature (for deep beds) and have a great importance in the generat ion of the spout in shallow spouted beds.