A multicomponent film model incorporating a general matrix method of solution to the Maxwell‐Stefan equations

Krishna, Rajamani; Standart, G.

doi:10.1002/aic.690220222

Cited by 246 publications

(55 citation statements)

References 7 publications

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“…7 for Y = 0, in combination with Eq. 8, are available for various hydrodynamic models, such as the film model (Krishna and Standart, 1976;Krishna, 1977) and the penetration model (Krishna, 1978). For Y = 1, numerical solutions with some simplifying assumptions are also available (Sentarli and Hortacsu, 1987;Frank et al, 1995).…”

Section: Mass Transfermentioning

confidence: 99%

Effect of kinetics and mass transfer on design of extractive reaction processes

Samant

1998

AIChE Journal

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Section: Mass Transfermentioning

confidence: 99%

Effect of kinetics and mass transfer on design of extractive reaction processes

Samant

1998

AIChE Journal

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“…where N We used a method suggested by Krishna and Standart (1976) which involves relating [k * ] to the binary pairs of mass transfer coefficients through solution of Maxwell-Stefan equations for film model. Matrices are calculated using following relations with assumption that the matrices accounting the influence of mass transfer rates on the mass transfer coefficients are identity.…”

Section: Model Equationsmentioning

confidence: 99%

Non-equilibrium stage modeling and non-linear dynamic effects in the synthesis of TAME by reactive distillation

Katariya

Kamath

Moudgalya

et al. 2008

Computers & Chemical Engineering

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“…In der ,exakten" Losung von Krishna und Stundart [36] ergibt sich die Matrix der Stoffaustauschkoeffizienten K aus der Gleichung…”

Section: Simulation Der Mehrstoff-rektifikation In Fullkiirperkolonnenunclassified

Simulation und Optimierung der Mehrstoff‐Rektifikation

Górak

Krastawski

Vogelpohl

1987

Chemie Ingenieur Technik

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Die verschiedenen Methoden zur Berechnung des Konzentrationsverlaufs bei der Mehrstoff-Rektifikation werden vorgestellt und hinsichtlich ihres Aufwands und ihrer Genauigkeit verglichen. Die Einbeziehung der Stoffaustausch-Kinetik auf der Grundlage der GesetzmaBigkeiten der MehrstoffDiffusion bedingt einen erheblichen zusatzlichen Rechenaufwand, der jedoch zu einer verbesserten Voraussage fuhrt und daher auch in der Entwurfspraxis gerechtfertigt sein kann. Insbesondere lassen sich bei der Rektifikation von Mehrstoffgemischen auftretende Besonderheiten nur mit solchen verbesserten Modellen erklaren. Auf verbesserte Methoden der Mehrkriterien-Optimierung, die neben Wirtschaftlichkeitsauch Sicherheits-und Umweltaspekte zu berucksichtigen erlauben, wird hingewiesen. Simulation and optimization of multicomponent distillation.Different methods for simulating multicomponent distillation columns are presented and compared with respect to the effort required and the accuracy that may be obtained. Inclusion of mass transfer kinetics based on the laws of multicomponent diffusion in the models significantly increases computer time, but the additional accuracy in the prediction of concentration profiles may justify this effort also in design practice. In particular, the unusual behaviour of concentration profiles due to multidiffusion effects can only be explained by such improved models. The new methods of multicriteria optimization offer substantial advantages over a scalar-optimization and, in addition to economic criteria, also allow inclusion of aspects of operational safety and of environmental requirements.

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A multicomponent film model incorporating a general matrix method of solution to the Maxwell‐Stefan equations

Abstract: dimensionless adiabatic temperature defined by Equation (12b) maximum of e reached at T~~~ initial guess of B needed for computational pur-

Cited by 246 publications

References 7 publications

Effect of kinetics and mass transfer on design of extractive reaction processes

Effect of kinetics and mass transfer on design of extractive reaction processes

Non-equilibrium stage modeling and non-linear dynamic effects in the synthesis of TAME by reactive distillation

Simulation und Optimierung der Mehrstoff‐Rektifikation

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