fluid contact tray for a fractionation column, fractionation column and use of a fractionation column

摘要

a fluid contact tray (10) for a fractionation column (1), in particular, a vapor-liquid contact tray suitable for use in an offshore fractionation column comprises: a tray plate (12) comprising an active surface mass transfer (20) suitable for contacting two fluids (1, g) of different densities, wherein the active mass transfer surface (20) comprises one or more holes (18) for the passage of a fluid / and at least two separating walls (22-1, 22-2, 22-3, 22-4) extending at least partially radially and / or at least one separating barrier (42) are arranged on the active mass transfer surface (20), which divides the active mass transfer surface (20) into at least two sections (24-1, 24-2, 24-3, 24-4); an annular channel (26) suitable for fluid / liquid collection (i) which is disposed in the peripheral area of the active mass transfer surface (20) and at least partially embraces the mass transfer surface (20) ; a central lowering tube (34) for collecting and discharging a fluid / liquid (1) from the annular channel (26), wherein the central lowering tube (34) is in the form of a hollow body with an opening (36) in its lower section, suitable for vertically downward liquid distribution and in which the central lowering tube (34) is non-rotatably attached to the fluid contact tray (10) and at least one conducting means ( 40) for transferring fluid collected in the annular channel (26) from the annular channel (26) to the central descent tube (34). This fluid contact tray (10), in particular, is usable for offshore applications, such as for a fractionation column located on a flng or fpso vessel.