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Experimental and Theoretical Studies on Hydrogenation in Multiphase Fixed-Bed Reactors

✍ Scribed by B. Battsengel; L. Datsevich; A. Jess

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
133 KB
Volume
25
Category
Article
ISSN
0930-7516

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✦ Synopsis

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.

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