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Critical gas velocity in a three‐phase internal loop airlift reactor with low‐density particles
Author(s) -
Muthukumar Karuppan,
Prasad Balakrishnan Naveen,
Velan Manickam
Publication year - 2004
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1135
Subject(s) - carboxymethyl cellulose , dimensionless quantity , materials science , loop (graph theory) , draft tube , benzoic acid , gas phase , polystyrene , range (aeronautics) , airlift , analytical chemistry (journal) , chemical engineering , thermodynamics , chemistry , chromatography , organic chemistry , composite material , bioreactor , polymer , physics , sodium , metallurgy , engineering , mathematics , combinatorics
In the present investigation the effects of the addition of organic additives (propanol, benzoic acid, iso‐amyl alcohol and carboxymethyl cellulose) on the critical gas velocity, ( U sg ) c , in an internal airlift loop reactor with low‐density particles (Nylon‐6 and polystyrene) were reported. Whereas the ( U sg ) c was reduced by adding the above additives, it increased with solids loading and density of the particles. The draft tube‐to‐reactor diameter ratio ( D E / D ) in the range of 0.5–0.6 gave minimum ( U sg ) c values. The proposed dimensionless correlation predicted the experimental data well. Copyright © 2004 Society of Chemical Industry