Transportvorgänge in Festbetten Geschichte, Stand und Perspektiven der Forschung

Abstract

Die Ubersicht versucht, einen Eindruck uber die Geschichte, den gegenwartigen Stand und die Perspektiven der Forschung auf dem Gebiet der Warme-, Stoff-und Impulsiibertragung in Festbetten zu vermitteln. Die Methodik der Modellbildung und der experimentellen Analyse wird anhand von Beispielen ausfiihrlich erlautert und in einer Reihe von Thesen kodifiziert. Sie ist nicht auf Festbetten beschrankt, sondern 1aBt sich auch auf andere mehrphasige Systeme mit oder ohne chemische Reaktion anwenden. Formeln oder Berechnungsrichtlinien werden nicht angegeben, dafiir wird auf Handbucher und andere Veroffentlichungen verwiesen.Transport phenomena in packed beds: History, state of the art, and research outlook. This review tries to give an impression about the history, the state of the art, and the research outlook for heat, mass, and momentum transfer in packed beds. The methodology of model development and experimental analysis is thoroughly discussed on the basis of examples; several postulates are introduced for its codification. This methodology is not restricted to packed beds but can also be applied to other disperse systems with or without chemical reaction. Formulas and guidelines for calculations are not given; handbooks and other related papers are quoted for this purpose.

Methanation for Synthetic Natural Gas Production – Chemical Reaction Engineering Aspects

“…in consequence, a wealth of scientific literature exists that covers heat transfer correlations for all common catalyst shapes, modeling, optimization of the pressure drop, and the replacement of random catalyst beds by structured catalyst supports [115][116][117][118][119][120][121][122][123]. Such reactors are used in partial oxidation reactions (e.g., maleic or phthalic anhydride) or Fischer-Tropsch processes (e.g., Shell's middle distillate synthesis) and can comprise several tens of thousands of parallel tubes filled with catalyst.…”

Design Strategies for Flow of Non-Newtonian Fluids Through Packed Beds

“…In [7] one can find a good review of the above parameters C 1 ±C 3 . In laminar flow, the density plays no role, so that fRe = C 1 (4) For this case it has been shown that Eq. 4 also holds for purely viscous fluids, for which viscosity depends on the shear rate (or shear stress) [7±11].…”