FLOW REGIMES, LIQUID HOLDUPS AND 2 PHASE PRESSURE-DROP FOR 2-PHASE COCURRENT DOWNFLOW AND UPFLOW THROUGH PACKED-BEDS - AIR NEWTONIAN AND NON-NEWTONIAN LIQUID-SYSTEMS/

The analysis of the hydrodynamics results of two-phase downflow and up flow through fixed beds with porous particles shows that the flow regi mes, two-phase pressure drop and liquid holdups are strongly influence d by the presence of the non-Newtonian liquids. With highly viscous no n-Newtonian liquids the hydrodynamic characteristics (pressure drop, d ynamic and total liquid holdups) of two-phase downflow are close to th ose of two-phase upflow-the axial dispersion appears to be an importan t cause for the possible effects of the hydrodynamics on the reactor p erformance. (C) 1997 Elsevier Science Ltd.