A Correlation for Bed Voidage in Three-Phase Fluidized Bed

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Akira Hirata¹  Motoharu Noguchi¹  Fredric B. Bulos¹ 

[1] Department of Chemical Engineering, Waseda University

关键词: Liquid-Solid Two-Phase Fluidization;    Three-Phase Fluidization;    Bed Voidage;    Solid Hold-Up;    Bed Expansion;    Bed Contraction;   

DOI  :  10.1252/jcej.28.400

来源: Maruzen Company Ltd

【 摘 要 】

References(19)Previously published data of three-phase fluidization were correlated to develop a new empirical correlation for predicting bed voidage in gas-liquid-solid fluidized beds. The proposed correlation model, when used in conjunction with any suitable two-phase model for bed voidage, can serve as a correlation for bed voidage in both two- and three-phase fluidized beds. It describes the bed expansion and contraction phenomena observed during fluidization and is valid even as the superficial gas velocity approaches zero. A new criterion for quantifying the bed expansion and contraction phenomena based on this empirical model is derived and is also discussed in this paper.

【 授权许可】

Unknown