V-module fractionation tray

A fractionation tray adapted for being mounted in a horizontal plane in a vertical fractionation column, said tray having upper and lower surfaces and comprising a perforated tray deck formed substantially entirely from a plurality of adjacent triangular downcomer modules;

• with each downcomer module comprising a pair of planar sidewalls which are inclined at substantially equal angles from the plane of the tray and joined together to form sealed top and bottom regions of the downcomer module separated by an imperforate central region with perforations for passage of the entire upward vapor flow in the column being located in the top region of the downcomer modules and with a liquid sealable outlet means sized for the entire onstream downward liquid flow in the column during use being located in the bottom region of the downcomer module.