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Oscillating behavior on distillation trays
Author(s) -
Biddulph Michael W.,
Stephens David J.
Publication year - 1974
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690200107
Subject(s) - entrainment (biomusicology) , baffle , distillation , mechanics , work (physics) , tray , chemistry , atmospheric pressure , chromatography , control theory (sociology) , thermodynamics , meteorology , mechanical engineering , engineering , physics , computer science , acoustics , control (management) , artificial intelligence , rhythm
The objective of this work was to study the undesirable oscillating behavior which can develop on distillation trays. This takes the form of violent lateral movements of the gas/liquid mixture, causing premature flooding and reduced efficiency. It has been demonstrated that entrainment is significantly increased by the presence of oscillations. A simple predictive method by which a designer may evaluate the likelihood of oscillations occurring is proposed. It is concluded that columns of greater than about 1.0 m diam. operating at atmospheric pressure or above are unlikely to oscillate. However, reduced pressure columns of greater diameter may oscillate. A very simple mesh baffle system which completely prevents oscillations developing is described.