Simultane Lösung von Energie‐, Stoff‐und Impulsgleichungen für wandgekühlte chemische Festbettreaktoren

Haidegger, E.; Vortmeyer, D.; Wagner, P.

doi:10.1002/cite.330610822

Cited by 12 publications

(1 citation statement)

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“…Research has therefore been focused on a simulation of flow inside the packing based upon the independently measured voidage profiles and a consideration of flow reorientation behind the packing. The pioneering work has been performed by Vortmeyer and co-workers (Vortmeyer and Schuster, 1983;Haidegger et al, 1989), who introduced and used the extended Brinkmann equation (Brinkman, 1947). The Brinkmann equation consists of a momentum balance based upon the two-dimensional Navier-Stokes equation where the fluid-particle interactions are described in a semiempirical way through an Erguntype pressure drop relation.…”

Section: Flow Maldistribution and Exothermic Reactionmentioning

confidence: 99%

Operational and Structural Nonidealities in Modeling and Design of Multitubular Catalytic Reactors

Cybulski

Eigenberger

Stankiewicz

1997

Ind. Eng. Chem. Res.

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Idealized mathematical models for multitubular packed-bed reactors, based upon simplifying assumptions concerning symmetry, regularity, and homogeneity of the packing and the intertubular space, are commonly used for analysis and design. In reality, substantial deviations from these assumptions occur and give rise to maldistributions, both for the flow of reactants through a packed tube and for the flow of a heat-transfer medium through the intertubular space. These maldistributions and methods of how to deal with them in reactor design and simulation are reviewed in this paper.The following areas are covered: (i) porosity and flow patterns inside tubes, (ii) heat and mass transfer inside tubes, (iii) flow distribution over individual tubes, and (iv) distribution of coolant flow over the intertubular space.

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Section: Flow Maldistribution and Exothermic Reactionmentioning

confidence: 99%