Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 370332
Title Gas and liquid distribution in the monolith film flow reactor
Author(s) Heibel, A.K.; Vergeldt, F.J.; As, H. van
Source AIChE Journal 49 (2003)12. - ISSN 0001-1541 - p. 3007 - 3017.
Department(s) Biophysics
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) mass-transfer - porous-media - packed-columns - maldistribution - hydrodynamics - performance - dispersion - scale
Abstract The gas-liquid distribution in a monolith film flow reactor is investigated in the scope of this work. Magnetic resonance imaging (MRI) and a customized liquid collection method hate been successfully applied to determine the liquid distribution over the monolith cross-section. Using a well-positioned spray nozzle liquid distributor, very uniform distributions are found which address the needs for applications that require high single-pass conversions. Due to the lack of radial convective flow in monoliths, the initial distribution propagates through the reactor. With a correct positioned spray nozzle distributor, a far more uniform distribution than the natural one for trickle beds is obtained. MRI, applied to study the local gas-liquid distribution in a monolith channel, clearly shows the accumulation of the liquid in the corners of the individual channel with an arc-shaped gas-liquid interface. Differences in local liquid holdup over the channel corners were found, which is described as channel scale nonuniformities. The experimental results are in good agreement with a fundamental hydrodynamic model based on the Navier-Stokes equations. The average liquid saturation is conveniently described with an engineering correlation ßL = 6.6 . (Fr2Ls/ReLs)0.46, as a function of the liquid phase Reynolds and Froude number
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