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| UNIFAC× | Reaktiv destillation× | |
|---|---|---|
| Fagområde | Anvendt fysik | Anvendt fysik |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1975 | 1995 |
| Ophavsperson≠ | Aage Fredenslund, Russell Jones, John Prausnitz | Klaus Sundmacher |
| Type≠ | Activity coefficient model; predictive liquid-phase property method | Integrated reaction-separation process model |
| Oprindelig kilde≠ | 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. DOI ↗ | Sundmacher, K., & Kienle, A. (2003). Reactive Distillation: Status and Future Directions. Wiley-VCH. ISBN: 978-3-527-30623-9 |
| Aliasser≠ | UNIFAC predictive model, UNIQUAC functional-group contribution | integrated distillation-reaction, reactive column, reaction with separation |
| Relaterede≠ | 3 | 4 |
| Resumé≠ | 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. | 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. |
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