The Clustering Annular Flow Model of Circulating Fluidized Beds

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Masayuki Horio¹  Hiroyuki Ishii¹  Takashi Nakajima¹ 

[1] Department of Applied Chemistry for Resources, Tokyo University of Agriculture and Technology

关键词: Fluidization;    Flow Modeling;    Circulating Fluidized Beds;    Cluster;    Solid Flow;    Cluster Size;   

DOI  :  10.1252/jcej.22.484

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Cited-By(48)The Clustering Annular Flow Model (CA model) is presented to describe the annular flow structure in the main column of a circulating fluidized bed (CFB). With the present model the flow parameters for a CFB including the dimensionless radius of the core α can be estimated, given the values of both the diameter and the voidage of the cluster phase.The model was successfully validated by comparison of values of α experimentally determined with those predicted from the model and observed cluster parameters. With consideration of the cluster formation it became possible to give a quantitative explanation of the annular flow structure and the high gas-solid slip velocity so far observed in circulating fluidized beds.

【 授权许可】

Unknown