Compară metode

	Distilare reactivă	Modelul PFR (Reactor cu Flux Pistonic)	UNIFAC
Domeniu	Fizică aplicată	Fizică aplicată	Fizică aplicată
Familie	Process / pipeline	Process / pipeline	Process / pipeline
Anul apariției	1995	1962	1975
Autorul original	Klaus Sundmacher	Octave Levenspiel	Aage Fredenslund, Russell Jones, John Prausnitz
Tip	Integrated reaction-separation process model	Mathematical model for plug-flow reactor	Activity coefficient model; predictive liquid-phase property method
Sursa seminală	Sundmacher, K., & Kienle, A. (2003). Reactive Distillation: Status and Future Directions. Wiley-VCH. ISBN: 978-3-527-30623-9	Levenspiel, O. (1999). Chemical Reaction Engineering (3rd ed.). John Wiley & Sons. ISBN: 978-0-471-25424-9	Fredenslund, A., Jones, R. L., & Prausnitz, J. M. (1975). Group-contribution estimation of activity coefficients in nonideal liquid mixtures. AIChE Journal, 21(6), 1086-1099.
Denumiri alternative	integrated distillation-reaction, reactive column, reaction with separation	ideal tubular reactor, plug-flow model, PFR	UNIFAC predictive model, UNIQUAC functional-group contribution
Înrudite	4	3	3
Rezumat	Reactive 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.