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Mass Transfer Modeling of SO 2 into Large Water Drops
Author(s) -
Alexandrova S.,
Marion M.,
Lepinasse E.,
Saboni A.
Publication year - 2004
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200401655
Subject(s) - desorption , mass transfer , sulfur dioxide , drop (telecommunication) , chemistry , thermodynamics , diffusion , absorption (acoustics) , analytical chemistry (journal) , mechanics , materials science , chromatography , adsorption , composite material , inorganic chemistry , physics , engineering , telecommunications
This article concerns the modeling of the SO 2 absorption and desorption by falling drops through air with low to high concentration of sulfur dioxide. In the liquid phase, a model based on local scales, interfacial liquid friction velocity and drop size diameter is used. In the continuous gas phase a more classical model is applied. Data obtained by the modeling of the SO 2 absorption and desorption by a single water drop are compared to published experimental results and a fairly good correspondence was found. On the other hand, the model shows that at high gas concentration (> 1 %) the internal resistance to diffusion dominates, while at low gas concentration (< 1000 ppb) the external resistance to diffusion dominates.