Fluid Characteristics of Continuous Multi-Perforated Plate Stage Fluidized Beds without Downcomer

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  • いつ流管のない場合の多孔板式連続多段流動層の流動特性　　安定操作領域中の粒子の排出特性
  • イツリュウカン ノ ナイ バアイ ノ タコウ イタシキ レンゾク タダン リュ
  • 安定操作領域中の粒子の排出特性

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Abstract

The conditions for stable fluidization of continuously operated, multi-stage fluidized beds were studied.<BR>The performance in each stage of the multi-stage fluidized bed was found to be not markedly different from that of a single-stage fluidized bed in the region of stable fluidization.<BR>An empirical dimensionless equation for the relations among the geometry of the perforated plate, the properties of fluidized particles and the operating conditions is proposed for this region.<BR>It was found that the particles were discharged intermittently from a hole in the distributor, that the mass and frequency of discharge were inversely proportional to the superficial gas velocity, and that the former was proportional to the hold-up of particles within the bed.

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