Patent ID: 8042790

Claim:
A liquid-vapour distribution device for distribution of a concurrent two-phase stream in a down-flow vessel comprising: a plurality of horizontal self-supporting structures acting as support beams and tray panels and when installed forming a tray which will be essentially leak free at junctions of the structures and between the formed tray and inner wall of the vessel; each of said horizontal self-supporting structures consisting of a bottom plate being perforated with at least one row of apertures of equal size, wherein each aperture is fitted with an elongated down-flow channel being in form of a tube or any other geometric shape with the same geometrical cross sectional shape as the apertures in said bottom plate and each of the down-flow channels is provided with an inlet for the concurrent two-phase stream, and wherein at least two of said down-flow channels are fitted with a common riser cap being attached to and along at least one wall portion of each of the down-flow channels and mounted over and spaced apart the inlet of each of said down-flow channels.