Patent ES-8307517-A1 (ES)
Title: Vapour-liquid contacting appts. for use as fractionation tray
IPC: B01D3/14
Filed: 1982-04-26
Abstract: The liq. support plate of a vapour-liq. contacting appts. has a horizontal vapour-liq. contacting area formed by horizontal parallel members having a flat upper surface of a width between about 0.15 and 0.55 cm. and uniformly spaced apart by a distance between 0.022 to 0.051 cm. The contact area has an open arc of between 5.0 and 16.5% and has a flat upper surface. The smallest distance between any two adjacent parallel members is located at the upper surface of the members. The distance between the members increases towards the bottom of the members. - Used in a fractionation tray for a fractionation column. The tray provides a relatively low pressure drop at a given upward vapour velocity and has a low tendency to weep. The tray is rigid without the need for reinforcing elements attached to the vessel wall. EPAB- EP--92614 B A vapour-liq. contacting appts. which comprises a substantially horizontal tray having an upper surface and an outer edge which is adjacent to at least a portion of the inner surface of a containment vessel, the tray having a substantially flat horizontal vapour-liq. contacting area comprising a plurality of horizontal parallel members the parallel members being shaped such that the smallest distance between any two adjacent parallel members is located at the upper surface of theadjacent parallel members and the distance between the upwardly extending sides of adjacent parallel members is at least twice as large at the bottom(s) of the adjacent parallel members as at the top(s) of adjacent parallel members, the vapour-liq. contacting area of the tray having an open area between 5.0 and 16.5 per cent, means to supply liq. to an upper part of the vessel to flow downwardly therein and means to supply vapour to a lower part of the vessel to flow upwardly therein, characterised in that the parallel members are spaced apart at the tops thereof by a distance between 0.1 mm and 0.8 mm and in that a first downcomer supplies liq. to the upper surface of the tray at a first point, a second downcomer removes liq. from the tray at a second point and a weir is interposed between the downcomers to maintain the vapour-liq. contacting area of the tray in flooded condition during use of the appts. (10pp) - EP--92614 B A vapour-liq. contacting appts. which comprises a substantially horizontal tray having an upper surface and an outer edge which is adjacent to at least a portion of the inner surface of a containment vessel, the tray having a substantially flat horizontal vapour-liq. contacting area comprising a plurality of horizontal parallel members the parallel members being shaped such that the smallest distance between any two adjacent parallel members is located at the upper surface of the adjacent parallel members and the distance between the upwardly extending sides of adjacent parallel members is at least twice as large at the bottom(s) of the adjacent parallel members as at the top(s) of adjacent parallel members, the vapour-liq. contacting area of the tray having an open area between 5.0 and 16.5 per cent, means to supply liq. to an upper part of the vessel to flow downwardly therein and means to supply vapour to a lower part of the vessel to flow upwardly therein, characterised in that the parallel members are spaced apart at the tops thereof by a distance between 0.1 mm and 0.8 mm and in that a first downcomer supplies liq. to the upper surface of the tray at a first point, a second downcomer removes liq. from the tray at a second point and a weir is interposed between the downcomers to maintain the vapour-liq. contacting area of the tray in flooded condition during use of the appts. - EP--92614 B A vapour-liq. contacting appts. which comprises a substantially horizontal tray having an upper surface and an outer edge which is adjacent to at least a portion of the inner surface of a containment vessel, the tray having a substantially flat horizontal vapour-liq. contacting area comprising a plurality of horizontal parallel members the parallel members being shaped such that the smallest distance between any two adjacent parallel members is located at the upper surface of theadjacent parallel members and the distance between the upwardly extending sides of adjacent parallel members is at least twice as large at the bottom(s) of the adjacent parallel members as at the top(s) of adjacent parallel members, the vapour-liq. contacting area of the tray having an open area between 5.0 and 16.5 per cent, means to supply liq. to an upper part of the vessel to flow downwardly therein and means to supply vapour to a lower part of the vessel to flow upwardly therein, characterised in that the parallel members are spaced apart at the tops thereof by a distance between 0.1 mm and 0.8 mm and in that a first downcomer supplies liq. to the upper surface of the tray at a first point, a second downcomer removes liq. from the tray at a second point and a weir is interposed between the downcomers to maintain the vapour-liq. contacting area of the tray in flooded condition during use of the appts. (10pp)