On the Conditions of Fluidization of Bed

Abstract

Pub.Country: Japan Language: Japanese Abstract: As a fundamental investigation of the design of fluidized bed, experiments have been conducted to study the effects of various factors which determine the conditions of fluidization in fluidized beds, with air and particles such as iron, pyrrhotite, sand, coke, coal, etc. Some empirical correlations using u*=u/um, L*=LC/DP in previous paper are obtained, as follows: 1. The minimum fluidization velocity 2. The height of fluidized beds 3. The limit of the height of bed in which slugging occurs From these results, a nomograph and a diagram of fluidization-conditions are presented, by which suitable conditions of fluidization for given particles will be easily determined. Dp: diameter of pipe; um, Dp, ρS: terminal velocity, diameter and density of particle, respectively; LC, eC: height and void fraction of static bed, respectively.