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

Conference Paper (2017)
Author(s)

Frank Schillinger (Paul Scherrer Institut)

Simon Maurer (Paul Scherrer Institut)

E. C. Wagner (TU Delft - ChemE/Afdelingsbureau)

Serge M A Biollaz (Paul Scherrer Institut)

J. R. Van Ommen (TU Delft - ChemE/Product and Process Engineering)

Robert F. Mudde (TU Delft - ChemE/Transport Phenomena)

Tilman J. Schildhauer (Paul Scherrer Institut)

Research Group
ChemE/Transport Phenomena
More Info
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Publication Year
2017
Language
English
Research Group
ChemE/Transport Phenomena
Pages (from-to)
581-588

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.

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