Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-III-17The following parameters are changed and optimized during a calculation procedure: gasvelocity, a tube diameter, cooling agent temperature, catalyst particle dimensions, catalystactivity (within a potential range).ResultsThe following catalyst shapes were considered and used in the above describedoptimization procedure separately: cylindrical pellets, Raschig rings and holed trilobes. At thefirst stage, the catalyst properties were assumed invariable along the catalyst bed. It wasshown that the catalyst shaped as a trilobe is preferable in this case.At the second stage, a multi-layer catalyst bed loading was considered. The layers coulddiffer in catalyst shape, dimensions and activity. It was shown that multi-layer loading hassignificant advantages in comparison with uniform one.As a result, catalyst bed configuration, main design reactor and process technologicalparameters of a commercial reactor were chosen.References1. E.V. Semionova, G.Ya. Popova, T.V. Andrushkevich, E.A. Ivanov, I.A. Zolotarskii, V.N. Parmon. Gasphase oxidation of formaldehyde into formic acid on a v/ti catalyst. 1. Reaction kinetics. // This conference.2. E.I. Smirnov, V.A. Kuzmin, I.A. Zolotarsky, Radial thermal conductivity in cylindrical beds packed byshaped particles. // Chemical Engineering Research and Design, 2004, 82 (A2), P.293.3. E.I. Smirnov, A.V. Muzykantov, V.A. Kuzmin, A.E. Kronberg, I.A. Zolotarskii. Radial heat transfer inpacked beds of spheres, cylinders and Rashig rings. Verification of model with linear variation of λerin thevicinity of the wall. // Chem. Eng. J., 2003, V.11, P.243.4. S. Afandizadeh, E.A. Foumney. Design of packed bed reactors: guides to catalyst shape, size and loadingselection. // Applied Thermal Engineering. 2001, № 21, P.669.336