A preliminary study of the fluid mechanics of part-flooded beds

Picaro T. and White E.T. (1993) A preliminary study of the fluid mechanics of part-flooded beds. Chemical Engineering Science, 48 11: 1985-1994. doi:10.1016/0009-2509(93)80076-3


Author Picaro T.
White E.T.
Title A preliminary study of the fluid mechanics of part-flooded beds
Journal name Chemical Engineering Science   Check publisher's open access policy
ISSN 0009-2509
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1016/0009-2509(93)80076-3
Volume 48
Issue 11
Start page 1985
End page 1994
Total pages 10
Subject 1500 Chemical Engineering
Abstract When liquid percolates down a packed bed which is mounted on a support having a significant flow resistance, liquid can accumulate at the bottom of the column to form a part-flooded bed, comprising a lower flooded zone and an upper percolating zone. The support plays a major role in the onset of the part-flooded bed and may greatly restrict the flow capacity of the bed. This paper proposes a simplified analysis for the fluid mechanics of a part-flooded bed. The flooded height-flow rate relation is highly curved and depends on the relative importance of the bed and support flow resistances. The variation of the flooded height with flow rate in the absence of entrained air is easily predicted; however, in practice, air is entrapped in the flooded packing, giving a substantially higher packing flow resistance. The amount of entrapped air has been measured for two spherical packings over a range of flow rates. With this data the flooded height-flow rate relation in the presence of entrapped air may be predicted.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Sat, 09 Jul 2016, 17:01:16 EST by System User