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Experimental and Theoretical Studies on Hydrogenation in Multiphase Fixed‐Bed Reactors
Author(s) -
Battsengel B.,
Datsevich L.,
Jess A.
Publication year - 2002
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(200206)25:6<621::aid-ceat621>3.0.co;2-4
Subject(s) - mass transfer , chemistry , trickle bed reactor , reaction rate , thermodynamics , work (physics) , 1 octene , chemical reaction engineering , octene , mass transfer coefficient , catalysis , chemical engineering , chromatography , organic chemistry , ethylene , physics , engineering
Multiphase fixed‐bed reactors have complex hydrodynamic and mass transfer characteristics. The modeling and scale‐up are therefore difficult. The present work focuses on the role of mass transfer on the effective reaction rate. The catalytic 1‐octene hydrogenation was taken as a model reaction. The reaction rate in the trickle‐bed reactor is by a factor of 20 smaller than (theoretically) in the absence of any mass transfer limitations. For high octene concentrations (> 10 %), the effective reaction rate is limited by the H 2 consumption, above all by the gas/liquid and liquid/solid mass transfer. For lower octene concentrations the reaction is zero order with respect to H 2 and only depends on the octene consumption, i.e., on the interplay of chemical reaction, L/S and intraparticle mass transfer of octene.