Experimental study of gas and particle behavior in the grid zone of a jetting fluidized bed cold model

T. Kimura, K. Horiuchi, T. Watanabe, M. Matsukata, T. Kojima

研究成果: Article査読

27 被引用数 (Scopus)

抄録

The local behavior of gas and solids in a grid zone was investigated using a jetting fluidized bed cold model. Spherical alumina particles (440 μm, 1500 kg/m3) were used as bed material. A pair of optical fiber sensors, an A D converter and a personal computer were used to measure particle velocity in the jet, jet diameter and jet height. Tracer gas introduced from a center nozzle was sampled from various points in the grid zone and its concentration was measured by gas chromatography to investigate gas interchange between the jet and the annulus, and the gas dispersion in the annulus region. The effects of operational conditions, i.e., the shape of the gas distributor, nozzle diameter and gas flow rates, on the gas and particle behavior are discussed. It was considered that many more particles entered into the jet when a cone-shaped distributor rather than a flat distributor was employed. Employment of a narrower nozzle caused an increase in particle velocity at the bottom of the bed.

本文言語English
ページ(範囲)135-143
ページ数9
ジャーナルPowder Technology
82
2
DOI
出版ステータスPublished - 1995 2
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)

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