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Analysis of single‐stage nonequilibrium separation process problems
Author(s) -
Sridhar Lakshmi N.,
Maldonado Carlos,
Garcia Anamarie,
de Frias Atilio
Publication year - 2000
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.690461115
Subject(s) - non equilibrium thermodynamics , uniqueness , multiplicity (mathematics) , ternary operation , binary number , thermodynamics , mass transfer , physics , chemistry , statistical physics , mathematics , mathematical analysis , computer science , arithmetic , programming language
Equations constituting the nonequilibrium rate‐based separation process problem involving binary and ternary mixtures were analyzed. Multiplicity occurring in the nonequilibrium stage resulted from multiplicity taking place in the equilibrium calculations at the interface. This is achieved by demonstrating a one‐to‐one correspondence between the bulk and interface compositions in a nonequilibrium stage. The analysis of the film model for the mass‐transfer problem where the fluxes are obtained using the Maxwell‐Stefan equations showed solution uniqueness for this equation set. It also showed that the imposition of the mass‐transfer equations does nothing to cause additional multiplicities.