Experimental and Theoretical Studies on Hydrogenation in Multiphase Fixed Bed Reactors

Autor: Andreas Jess, Leonid Datsevich, Baatar Battsengel
Rok vydání: 2001
Předmět:
Zdroj: Chemie Ingenieur Technik. 73:738-738
ISSN: 1522-2640
0009-286X
DOI: 10.1002/1522-2640(200106)73:6<738::aid-cite7381111>3.0.co;2-c
Popis: 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.
Databáze: OpenAIRE