Influence of the internals orientation on the hydrodynamics in gas-solid bubbling fluidized beds

Conference paper (2017)

Authors

Frank Schillinger Paul Scherrer Institut
Simon Maurer Paul Scherrer Institut
E.C. Wagner ChemE/Afdelingsbureau
Serge M A Biollaz Paul Scherrer Institut
J.R. van Ommen ChemE/Product and Process Engineering - AS
R.F. Mudde ChemE/Transport Phenomena - AS
Tilman J. Schildhauer Paul Scherrer Institut
Research Group
ChemE/Transport Phenomena (AS) (TU Delft)
More Info
expand_more

Published Date

2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Transport Phenomena

Abstract

heat exchanger tubes in bubbling fluidized bed reactors are necessary to remove the reaction heat of exothermal reactions. Vertical internals that mimic the heat exchanger tubes in cold-flow models, proofed to reduce the bubble size and lead to a more even distribution of the bubbles above the cross-section. Another option is to orientate the internals horizontally inside the column. By means of a measurement campaign at a cold-flow model, differences concerning the hydrodynamic behavior between a column with horizontal and vertical internals were investigated and determined. It turned out that the horizontal internals influence the hydrodynamics in a way which is not beneficial concerning the reactor performance due to an accumulation of bubbles below the horizontal internals and preferential pathways of the bubbles between the horizontal internals.