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The Influence of Periodic Operation on the Effective Radial Thermal Conductivity in Trickle Bed Reactors
Author(s) -
Borremans Didier,
Rode Sabine,
Carré Patrick,
Wild Gabriel
Publication year - 2003
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450810361
Subject(s) - thermal conductivity , mechanics , steady state (chemistry) , trickle bed reactor , trickle , amplitude , materials science , volumetric flow rate , thermodynamics , flow (mathematics) , conductivity , physics , chemistry , optics , biochemistry , political science , law , catalysis , quantum mechanics
The effect of a periodic liquid feed on the effective radial heat conductivity, Λ r , in a trickle bed was investigated. The mean Λ r under periodic operation was found to be well estimated by time‐weighed averaging of steady state values. The actual effect of periodic operation can therefore be predicted by the shape of the Λ r , u L — curve in steady state operation. The effect of periodic operation is attenuated with decreasing gas flow rates and with decreasing liquid flow rate amplitudes in a bed of spherical particles. Practically no effect was observed with cylindrical particles.