JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
Particle Hold-up and Elutriation Rate in the Freeboard of Fluid Beds | |
Hitoshi Uchida1  Nobuyoshi Nakagawa1  Takayuki Takarada1  Nobuhiro Takamura1  Shunji Arita1  Kunio Kato1  | |
[1] Department of Biological and Chemical Engineering, Gunma University | |
关键词: Particle Hold-up; Fluidized Bed; Freeboard; Elutriation Rate; Entrainnnent; | |
DOI : 10.1252/jcej.27.79 | |
来源: Maruzen Company Ltd | |
【 摘 要 】
References(11)Cited-By(11)Based on experimental results from three fluid beds of different cross sections (15 × 15 cm, 8 × 8 cm and 7.1 cm i.d.), the effects of superficial gas velocity, freeboard height, cross sectional area and particle properties on the axial particle hold-up distribution in the freeboard and the elutriation rate from the top of the column were investigated. An entrainment intensity R was proposed for the particles to explain the effect of size distribution and density on the particle hold-up. The particle hold-up was found proportional to R1.87, and increased with increasing freeboard height and cross-sectional area. Empirical equations for both the particle hold-up distribution and for the particle elutriation rate were obtained.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912080693687ZK.pdf | 689KB | download |