抄録
Solid-phase mixing time was measured in a 0.2 m i.d. three-phase sparged reactor using a radioactive tracer technique. Air and water formed the gas and liquid phases. Spherical glass beads with an average size of 58, 92.5, 250, 600, 900, 1300 and 2100 microns were used as the solid phase. Glass particles were coated with radioactive gold and used as a tracer. The superficial gas velocity was varied in the range of 0.07–0.366 m/s and the solid loading was varied in the range of 0–10 vol.%. The effect of physical properties such as surface tension, liquid viscosity and the presence of electrolyte on solid phase mixing was investigated.
A mathematical model has been developed which successfully correlates data on mixing time.
