Specific features of multicomponent diffusion

Author: Dil’man V.   Kashirskaya O.   Lotkhov V.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 0040-5795

Source: Theoretical Foundations of Chemical Engineering, Vol.44, Iss.4, 2010-08, pp. : 379-383

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Abstract

Using a computational experiment, the existence of the abnormal regimes of nonequimolar diffusion in three-component gas-vapor mixtures such as acetone-methanol-air, hydrogen-water-carbon dioxide, and hydrogen-ammonia-nitrogen is shown. Due to osmotic and reverse diffusion, the molar fraction of water vapors and ammonia can be increased by more than a factor of two in the individual segments of a Stefan tube in comparison with their concentration at the inlet.