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Liquid circulation characteristics in jet loop reactors
Author(s) -
Jain D. K.,
Patwari A. N.,
Khan A. A.
Publication year - 1990
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.5450680622
Subject(s) - changeover , jet (fluid) , circulation (fluid dynamics) , reynolds number , mechanics , materials science , range (aeronautics) , loop (graph theory) , liquid phase , liquid gas , thermodynamics , physics , mathematics , quantum mechanics , voltage , combinatorics , turbulence , composite material
Liquid‐velocity profile measurements in the annular region of a jet‐loop reactor for a gas liquid system are reported, which facilitate evaluation of local phenomena. The range of variables studied included superficial gas velocities of 0‐16 cm · s −1 and superficial liquid velocities of 0‐0.6 cm · s −1 . The main observations made with respect to the radial profile of axial liquid velocity are: a) a trend reversal in the changeover from a liquid phase system to a gas‐liquid system; b) at low gas loading rates of 1‐3 cm · s −1 it is insensitive to liquid injection rates; c) at high liquid injection rates it shows a minimum. A correlation has been proposed to predict the circulation Reynolds number for the two‐phase system.