Suspension of Solid Particles in Solid-Liquid Spouted Vessel

Abstract

Effect of pressure drop, spouting velocity, particle size, particle density and vessel diameter on suspension of solid particles in a solid-liquid spouted vessel are measured and the performance of the spouted vessel is compared with that of mixing vessel or fluidized bed.
The spouted vessel, in which solid particles are blown off by the liquid jet from a nozzle at the bottom (at the top when particles are lighter than liquid), is superior in power efficiency to suspend solid particles. Also, large and heavy particles can be easily suspended at low superficial velocity in a spouted vessel.
The spouted vessel can be divided into two sections, a jetted turbulent section and a calm uni-velocity section.
Though in the former turbulent section mixing is almost perfect, turbulence is small and plug flow-type-mixing prevails in the latter section.