Pressure drop of arranged packings with vertical walls

Among the known types of packings, arranged packings with vertical walls ha ve the lowest pressure drop for one transfer unit at comparable free volume as well as the highest efficiency at a given pressure drop. Reliable equat ions are derived for pressure drop determination in industrial apparatuses filled with this kind of packing. The pressure drop is presented as a sum o f two terms-pressure drop tin the vertical channels) of the packing rows th emselves and local pressure drop of the boundary sections between the rows. The experimental data for dry packing pressure drop, available in the lite rature and newly obtained, are described by new equation with mean deviatio n of 9.3%. Equations for determination of wetted packings pressure drop up to the loading point and above it are obtained, too. The proposed equations can also be used to determine the loading point. (C) 1999 Elsevier Science S.A. All rights reserved.