Gas-limited hydrogenation of 1-Octene in a fixed bed : upflow versus downflow
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Date
Authors
Reynders, Fritz
Nicol, Willie
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Abstract
Two downflow operational modes with different hydrodynamic states were
compared to upflow operation. Various gas limited conditions (γ = 15 - 60) were
employed. The downflow mode with the higher wetting efficiency consistently
outperformed the downflow mode with the lower wetting efficiency. Both the
downflow modes outperformed the upflow mode at high gas mass fluxes and
underachieved against upflow at lower gas mass fluxes. The results stand in
contradiction to the theory on direct gas-solid mass transfer under trickle flow
conditions. The switching behavior of the upflow mode performance was attributed
to hydrodynamic regime shifts, hinting that the perceived ‘poor’ performance of
upflow reactors under gas limited conditions might be linked to slugging in
laboratory scale reactors.
Description
Keywords
Catalysis, Hydrodynamics, Mass transfer, Multiphase reactors, Packed bed
Sustainable Development Goals
Citation
Reynders, F & Nicol, W 2011, 'Gas-limited hydrogenation of 1-Octene in a fixed bed : upflow versus downflow', Industrial and Engineering Chemistry Research, vol. 50, no. 18, pp.10476-10479.