Conductivity of series mechanism for Cylindrical Pellets (Kser)in Fixed Bed Reactor at High Pressure

Abstract

Packed bed catalytic reactor is an assembly of usually uniformly sized pellets (catalyst) which are randomly arranged and firmly held in position within a vessel or tube. The reactants are supplied to the reactor with the bulk of the fluid flowing through the packed bed. Contacting with catalytically active particle, reactant undergo chemical transformations, which are usually accompanied with heat reduce or heat consumption. If necessary, the heat is removed or supplied through the tube wall. A new mathematical models is developed to investigate the parameters that influence the Conductivity of Series Mechanism in a fixed bed reactor including the thermal conductivity of the fluid phase (kf) and solid dispersed phase (ks) the porosity of bed (ε ), the shape and orientation of the partied and as well as its density. There are additional parameters beside these parameters that contribute significantly radial mixing in packed bed and important in chemical reactors as well as well as in equipment devoted kc separation processes are considered. Radial mixing is often desirable since it reduce undesirable radial temperature gradient in reactors. The extent of mixing depends on Reynolds number, molecular diffusion of fluid sensitivity of individual constituents and upon the geometry of the packing.