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Dynamic Gas Disengagement in a High‐Pressure Bubble Column
Author(s) -
Jordan Uwe,
Saxena Alok K.,
Schumpe Adrian
Publication year - 2003
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.5450810322
Subject(s) - bubble , mechanics , materials science , disengagement theory , thermodynamics , chemistry , physics , gerontology , medicine
Bubble disengagement after stopping the gas supply is analyzed based on the concept of constant slip velocity; it is compared with the approaches used by previous investigators. The technique has been applied to study the gas density effect (0.17 to 46.6 kg·m —3 ) on the gas hold‐up structure in a bubble column with organic liquids (toluene, ethanol, 1‐butanol, decalin) and tap water. With increasing gas density, the large bubble rise velocity decreases; this indicates smaller bubble size. The small bubble hold‐up is correlated with the gas and the liquid properties whereas the large bubble hold‐up is hardly affected.