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Pressure drop and flowrate characteristics of a liquid phase spout‐fluid bed at the minimum spout‐fluid flowrate
Author(s) -
Littman H.,
Vukovic D. V.,
Zdanski F. K.,
Grbavčić Ž. B.
Publication year - 1974
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450520207
Subject(s) - pressure drop , nozzle , fluidized bed , volumetric flow rate , mechanics , annulus (botany) , reynolds number , fluidization , materials science , drop (telecommunication) , chemistry , thermodynamics , composite material , physics , turbulence , engineering , mechanical engineering
Data on the minimum spout‐fluid flowrates and the pressure drop in the annulus at that flowrate are presented as a function of bed height and nozzle diameter for a bed spout‐fluidized with water. The column was 62.6 mm. in diameter and contained 3.09 mm. glass particles. The particle Reynolds number at the minimum fluidizing velocity was 91.6. A plot of the annular vs. the nozzle flowrate shows that the minimum spout‐fluid flowrates fall on a straight line between the minimum fluidizing and minimum spouting flowrates. The annular pressure drop is explained using an extension of the theory of Mamuro and Hattori.