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Diffusion and reaction in ideal multicomponent systems: I. Tubular reactor near equilibrium
Author(s) -
Solomon R. L.,
Hudson J. L.
Publication year - 1971
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.690170225
Subject(s) - thermodynamics , isothermal process , thermal diffusivity , laminar flow , chemistry , diffusion , ternary operation , mixing (physics) , flow (mathematics) , mechanics , physics , quantum mechanics , computer science , programming language
Diffusion and either surface or gas‐phase reaction in a ternary ideal gas mixture in steady fully developed laminar flow in a tube is considered. The linearized equations valid near equilibrium and under isothermal conditions are solved. Concentration profiles predicted using a multicomponent diffusivity matrix are compared to those predicted using more approximate diffusivities. Local overshoots past equilibrium occur, but oscillations (with axial position) are not possible. A simplified diffusivity expression is found which predicts cup‐mixing mole fractions in good agreement with those predicted using the multicomponent diffusivities.