Patent ID: 6371454
Filing Date: 2002-04-16
Classification: B01D

Abstract:
A downcomer for a plate column, which is largely centrally symmetrically formed with respect to an axis pointing in the column direction, the downcomer comprising:a run-out opening which is located on a plate within an overflow weir; deflection elements which form a chimney for the upward flow of gas; elements for the development of a circular flow in an incoming gas/liquid mixture; a passage part which leads to a next lower plate; and a cup at the lower end of the passage part for the accumulation of liquid flowing off; wherein the cup contains a plurality of apertures which are designed and arranged in such a manner that a largely uniform distribution of liquid flowing away to the next plate results; and wherein the elements for the development of a circular flow in an incoming liquid/gas mixture are formed by at least one of the following: parts located at the chimney, and parts located at the overflow weir of the runout.