Abstract:
The present invention relates to a gas-redirecting device presenting an upper plane and a plurality of gas-redirecting tubes comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50% of the total area of the upper plane covered by the orthogonal projections. Also provided is a liquid-gas contacting column comprising a gas-redirecting device, a floating support comprising a liquid-gas contacting column, at least two packed beds and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed.
Abstract:
A fluid contact tray (10) for a fractionation column (1), in particular a vapor-liquid contact tray suitable for the use in an offshore fractionation column, comprises: •a tray deck (12) comprising an active mass transfer surface (20) suitable for contacting two fluids (l, g) of different densities, wherein the active mass transfer surface (20) comprises one or more orifices (18) for the passage of a fluid/gas (g), and wherein at least two at least partially radially extending separation walls (22-1, 22-2, 22-3, 22-4) and/or at least one separation weir (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 collecting fluids/liquids (l), which is arranged at the peripheral area of the active mass transfer surface (20) and at least partially embraces the mass transfer surface (20), •a central downcomer (34) for collecting and discharging a fluid/liquid (l) from the annular channel (26), wherein the central downcomer (34) has the form of a hollow body with an opening (36) in the bottom section thereof being suitable for the distribution of liquid vertically downwardly, and wherein the central downcomer (34) is non-rotatably fixed at 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 downcomer (34). This fluid contact tray (10) is in particular useable for offshore applications, such as for a fractionation column located on a FLNG or FPSO vessel.
Abstract:
A hybrid contact tray for a mass transfer column is provided. The contact tray includes a tray deck for passage of liquid along a liquid flow path thereon. The tray deck has a plurality of orifices for passage of ascending vapor through the tray deck, a cross-current vapor-liquid mixing section having a first portion of the plurality of orifices, and a co-current vapor-liquid mixing section comprising at least one co-current mixing device associated with a second portion of the plurality of orifices. The tray deck also has means for altering liquid head levels with respect to the plurality of orifices such that the liquid head level within the co-current vapor-liquid mixing section is greater than the liquid head level within the cross-current vapor-liquid mixing section.
Abstract:
A gas-liquid contact column tray has a section including a gas pathway (SAA) and a liquid pathway section (SD) delimited by at least one downspout, wherein a deflecting system including a roof is included, located above the liquid gas interface at the level of the liquid pathway section (SD), in order to apportion the gas phase over a surface section greater than the section including the means of gas pathway (SAA). In a method for gas-liquid contact in such a column, most of the gas phase part is redirected and apportioned over the whole pathway section available for gas, corresponding to the tray section provided with the gas pathway (SAA), increased by the liquid pathway section (SD), using a deflecting system consisting of the roof located higher than the gas-liquid interface level of the liquid pathway section (SD), and the liquid collected is evacuated toward the lower tray.
Abstract:
[Technical Problem] A contactor is provided which is capable of making fluids of two phases contact each other under a good dispersion state and which can be easily multi-staged.[Means for Solving the Problems] The inside of a contactor 1 is divided into a plurality of cells 22, 32 by partition walls (a vertical wall 10, horizontal walls 21, 31) and the respective cells 22, 32 become countercurrent contacting spaces of an upflow fluid flowing up in the contactor 1 and a downflow fluid flowing down in the contactor 1. A downflow fluid injection hole 52 provided in the vertical wall 10 of each stage makes the downflow fluid blocked by the partition wall and residing inject into the neighboring cells 22, 32 of a lower stage side, while an upflow fluid flow-in port 51 provided in an upper side of the injection hole 2 makes an upflow fluid from the cells 22, 32 of the lower stage side flow in.
Abstract:
The present invention relates to a method for deodorising organic fluids or inorganic fluids, which comprises creating a continuous flow or semi continuous flow of the fluids throw a column having one or more trays, creating a plug flow of the fluids through a labyrinth of passages on each tray by regulating the flow through the passages by use of a regulating valve at an exit in the tray, introducing sparging gas on the bottom level of each tray, contacting the fluids with the sparging gas in the plug flow, removing volatiles from the fluids, and transferring the sparging gas and the volatiles in ducts inside the column or outside the column. The present invention relates also to a plug flow tray, a column, a deodorising plant, and use thereof.
Abstract:
A vapor-liquid contact tray and downcomer assembly is provided with ramps which serve to impart a horizontal directional flow to the liquid exiting the downcomer and/or the vapor passing through the tray. The downcomer includes a bottom plate which closes the outlet region of the downcomer and includes a plurality of ramps which redirect the downwardly flowing liquid to include a horizontal component in the direction of liquid flow across the underlying tray. The downcomer receiving area in the underlying tray can include valves having floating caps which shield the associated openings in the tray against liquid weeping and redirect the vertical movement of the vapor streams to a generally horizontal momentum.
Abstract:
A baffle tray tower comprising a tubular tower body, a plurality stages of baffle tray members disposed within the tower body, and partition plates each disposed within the tower body so as to generally vertically divide a curtain zone defined between two adjacent stages of the baffle tray members into an upper curtain zone for mainly passing a gas therethrough and into a lower curtain zone for mainly passing a liquid therethrough can be operated as a gas-liquid contacting device with a high gas-liquid contact efficiency and a low pressure loss.
Abstract:
The packing is made up of layers each of which is deformed into a zig-zag shape. Each layer has contiguous rows of deflecting surfaces which are interconnected by bridges and with every other deflecting surface being stamped out so as to be bent out of the plane of the layer. The stamped out deflecting surfaces of adjacent rows are offset from one another by the width of one deflecting surface and are bent out of so far as to be parallel to the next flank.
Abstract:
This invention relates to a distillation column for removing vinyl chloride monomer or other volatile material from an emulsion, suspension or dispersion containing such material. The apparatus comprises a column in which a series of inverted cones are mounted. The dispersion or emulsion is pulled downwardly over the cones and steam is fed into the column through sparges and flows upwardly against the descending stream of material. The low boiling materials are distilled out and recovered for reuse. The stripped emulsion or dispersion are collected at the bottom of the column.