Patent ID: 6817596
Filing Date: 2004-11-16
Classification: B01D

Abstract:
A tray column (1) with a flowing liquid (51) and having downcomers (3) for a transport of the liquid between adjacent trays (2), with the liquid transport taking place in each downcomer through a plurality of discharge apertures (32) onto a loaded tray and liquid flowing out of the discharge apertures in the form of jets (60) blending into a regionally divergent flow field (6) on striking the loaded tray, said flow field having transverse components of the flow speed with respect to a longitudinal main flow direction (61),wherein guide elements (4) are arranged a) beneath the discharge apertures and at a spacing from the loaded tray, or b) on and above the discharge apertures, or c) after the discharge apertures, said guide elements (4) each guiding the impulse of liquid corresponding to the divergent flow field and thereby contributing to forming the transverse speed components such that the longitudinal component of the flow speed has a largely constant profile in each plane perpendicular to the main flow direction; wherein the discharge apertures are arranged in a row and made in different sizes in a graduated fashion to be smaller in a central region than in adjacent flank regions; wherein the guide elements are each associated with one of the discharge apertures; and wherein each guide element adjoins a rim of the associated discharge opening.