Patent ID: 8944419
Filing Date: 2015-02-03
Classification: B01D

Abstract:
1. A valve cover for a mass transfer column comprising a central portion for disposition in spaced relation to an orifice for passage of an ascending flow of vapor in a tray deck; a pair of legs extending downwardly from opposite ends of said central portion; at least one guide vane extending laterally and downwardly from said central portion for deflecting at least a part of the vapor ascending through a respective orifice towards said tray deck; and a pair of depending extensions, each said extension including a first portion for passing through said orifice of said deck, a second portion extending downwardly from said first portion and towards a second portion of the other of said pair of extensions and a U-shaped portion extending upwardly from said second portion and defining a pair of prongs spaced from said tray deck a predetermined distance for abutting an underside of said tray deck in response to lifting of said valve cover relative to said tray deck.