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Реакционная дистилляция×Модель реактора идеального вытеснения×UNIFAC×
ОбластьПрикладная физикаПрикладная физикаПрикладная физика
СемействоProcess / pipelineProcess / pipelineProcess / pipeline
Год появления199519621975
Автор методаKlaus SundmacherOctave LevenspielAage Fredenslund, Russell Jones, John Prausnitz
ТипIntegrated reaction-separation process modelMathematical model for plug-flow reactorActivity coefficient model; predictive liquid-phase property method
Основополагающий источникSundmacher, K., & Kienle, A. (2003). Reactive Distillation: Status and Future Directions. Wiley-VCH. ISBN: 978-3-527-30623-9Levenspiel, O. (1999). Chemical Reaction Engineering (3rd ed.). John Wiley & Sons. ISBN: 978-0-471-25424-9Fredenslund, A., Jones, R. L., & Prausnitz, J. M. (1975). Group-contribution estimation of activity coefficients in nonideal liquid mixtures. AIChE Journal, 21(6), 1086-1099. DOI ↗
Другие названияintegrated distillation-reaction, reactive column, reaction with separationideal tubular reactor, plug-flow model, PFRUNIFAC predictive model, UNIQUAC functional-group contribution
Связанные433
СводкаReactive distillation couples reaction and separation in a single column, where reactants are separated from products continuously while simultaneously undergoing reaction on catalytic trays. Pioneered in the 1990s by Klaus Sundmacher and others, this process intensification technique dramatically reduces capital cost, energy consumption, and environmental impact for suitable reactions. It is now industrially proven for esterification, hydration, and transesterification processes.The PFR (Plug Flow Reactor) model describes the behavior of a tubular reactor in which fluid elements move through as distinct plugs with no axial mixing. Fluid at the inlet is freshly unreacted; as it travels downstream, reactions progress. This idealized model, formalized by Octave Levenspiel alongside CSTR theory, is the opposite extreme: while CSTRs are fully mixed, PFRs have no axial mixing. In practice, PFRs achieve higher conversion than CSTRs for the same residence time and are widely used in the chemical and petroleum industries.UNIFAC (Universal Functional-group Activity Coefficient) is a predictive model for liquid-phase activity coefficients of multicomponent mixtures. Developed by Fredenslund, Jones, and Prausnitz in 1975, it decomposes molecules into functional groups and uses group interaction parameters to estimate non-ideal behavior. UNIFAC is revolutionary because it can predict phase equilibria for mixtures never experimentally measured, making it invaluable for process design and chemical engineering.
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ScholarGateСравнение методов: Reactive Distillation · PFR Model · UNIFAC. Получено 2026-06-19 из https://scholargate.app/ru/compare