Abstract: Gas-liquid contact tray comprising a bubble area and a plurality of downcomers having a downcomer opening, which downcomer openings are spaced in the bubble area, such that, when in use, a liquid enters the downcomer opening from opposite sides of the downcomer opening, wherein the downcomer opening and downcomer is provided with at least two flow directing plates, wherein each flow directing plate has an upper end which extends above the tray and is inclined towards the direction of the liquid flowing towards the downcomer opening.

Abstract: A gas-liquid contact tray having a bubble area and one or more downcomers provided at its upper end with a downcomer opening for receiving liquid, wherein the downcomer opening and downcomer are provided with a flow directing plate, wherein the flow directing plate has an upper end which extends horizontally in the direction of the bubble area.

Abstract: Gas-liquid contacting tray having a bubble area and one or more rectangular downcomers which are longer in length than in width, which downcomers have two sloped downcomer walls along their length, a downcomer opening at tray level and one or more downward directed liquid discharge openings at the lower end, which downcomers are so positioned on the tray that bubble area is present at both of the longer sides, wherein the cross-sectional area at the lower end of the downcomer is less than 40% of the cross-sectional area of the upper end of the downcomer at tray level.

Abstract: This invention relates to a gas-liquid contact tray having a bubble area and a downcomer having a downcomer opening, in which a self-draining vent tube is present in the downcomer and fluidly connects the upper portion of the downcomer with a space above the tray.

Abstract: Gas-liquid contact tray comprising a bubble area and a plurality of downcomers having a downcomer opening, which downcomer openings are spaced in the bubble area, such that, when in use, a liquid enters the downcomer opening from opposite sides of the downcomer opening, wherein the downcomer opening and downcomer is provided with at least two flow directing plates, wherein each flow directing plate has an upper end which extends above the tray and is inclined towards the direction of the liquid flowing towards the downcomer opening.

Abstract: Gas-liquid contact tray comprising a bubble area and one or more downcomers provided at its upper end with a downcomer opening for receiving liquid, wherein the downcomer opening and downcomer is provided with a flow directing plate, wherein the flow directing plate has an upper end which extends horizontally in the direction of the bubble area.

Abstract: Gas-liquid contact tray comprising a bubble area and one or more rectangular downcomer openings spaced within the bubble area, wherein a shield provided with a plurality of openings is present above the downcomer opening and which shield extends from both the longitudinal sides of the rectangular downcomer.

Abstract: A gas-liquid contacting column is described with a number of axially spaced trays, each having two sections separated along a diametrical line on the tray, and having a number of parallel rectangular downcomers, open at the upper end and closed at the bottom end, which has a number of liquid discharge openings, and a number of liquid receiving areas with bubble area between them. The liquid receiving area is positioned just below the downcomer of a consecutive tray just above. The downcomers extend from the diametrical line to the circumferential of the tray such that the ends of the downcomers of the two tray sections are positioned along the diametrical line in an alternating manner, wherein the area of the liquid discharge openings per downcomer length as viewed from below and close to the diametrical line is less than that as viewed from below.

Abstract: The invention relates to a gas-liquid contacting tray provided with a bubble area, a liquid discharge area and an overflow weir along the boundary of the bubble area and the liquid discharge area, on which tray, when in use, a liquid flow in the direction of the liquid discharge area is present just above the surface of the bubbling area, in which the overflow weir is formed such that it guides the liquid flow in a backwards direction.

Abstract: This invention relates to a gas-liquid contact tray consisting of a bubble area and a downcomer having a downcomer opening, in which a self-draining vent tube is present in the downcomer and fluidly connects the upper portion of the downcomer with a space above the tray.

Abstract: Gas-liquid contacting tray consisting of a bubble area and one or more rectangular downcomers which are longer in length than in width, which downcomers consist of two sloped downcomer walls along their length, a downcomer opening at tray level and one or more downward directed liquid discharge openings at the lower end, which downcomers are so positioned on the tray that bubble area is present at both of the longer sides, wherein the cross-sectional area at the lower end of the downcomer is less than 40% of the cross-sectional area of the upper end of the downcomer at tray level.

Abstract: A gas-liquid contacting column is disclosed that is provided with a number of axially spaced trays, each tray having two tray sections separated along a diametrical line on the tray, each tray section consisting of a number of parallel rectangular downcomers, a number of liquid receiving areas and bubble area between the downcomers and the liquid receiving areas, which liquid receiving area is positioned just below the downcomer of a consecutive tray just above and which downcomers are open at the upper end and closed at the bottom end, which bottom end is provided with a number of liquid discharge openings and which downcomers extend from the diametrical line to the circumferential of the tray in such a manner that the ends of the downcomers of the two tray sections are positioned along the diametrical line in an alternating manner, wherein the area of the liquid discharge openings per downcomer length as viewed from below and close to the diametrical line is less than the average area of the liquid discharg