LIQUID HOLDUP AND ABNORMAL FLOW PHENOMENA IN PACKED BEDS UNDER CONDITIONS SIMULATING THE FLOW IN THE DROPPING ZONE OF A BLAST FURNACE.

Abstract

Measurements were made of the total holdup, gas pressure drop and flooding velocities for flow through packed beds at low superficial velocities for various degrees of wetting between liquids and solids. Correlations for static and dynamic holdup, and a flooding diagram which is valid for non-wetting as well as wetting flow, were obtained. A transition from a stable to a fluidized bed occurred before the onset of flooding in some experiments.