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US 8,720,870 B2Granted
Contact tray for a mass transfer column
AssigneeSulzer Chemtech AG
InventorsMark W. Pilling, Stefan Tobias Hirsch, Markus Friedrich Fischer
Life of this patent
Estimating the term…
Abstract
The valve cover has a guide vane extending laterally and downwardly from the central portion towards and in spaced relation to the tray deck for deflecting a majority of the vapor passing upwardly through an orifice downward towards the tray deck. A de-entrainment device with a downwardly angled deflector in vertical alignment with an orifice in the tray deck may be integrated or not with the valve cover below the tray deck.
Claims23
A contact tray for a mass transfer column comprising
- a tray deck for receiving a flow of liquid thereon, said tray deck having a plurality of laterally unencumbered orifices for passage of an ascending vapor therethrough;
- and
- a plurality of valve covers, each said valve cover being mounted over a respective one of said orifices and having a central portion disposed in spaced relation to said tray deck and over a respective orifice, a pair of sloped legs at opposite ends, and a pair of guide vanes extending laterally and downwardly from said central portion towards said tray deck for deflecting a majority of the vapor ascending through a respective orifice towards said tray deck.
A valve cover for a mass transfer column comprising
- a central portion for disposition in spaced relation to an orifice for passage of an ascending flow of vapor in a tray deck;
- a pair of legs extending downwardly from opposite ends of said central portion;
- and
- a pair of guide vanes extending laterally and downwardly from said central portion for deflecting a majority of the vapor ascending through a respective orifice towards the tray deck, each said guide vane being spaced from the tray deck in a range of from 3 to 10 mm.
1 more element
In combination,
- a tower disposed on a vertical axis;
- a plurality of horizontal tray decks disposed in spaced vertical relation within said tower for receiving flows of liquid thereon, each said tray deck having a plurality of laterally unencumbered orifices for passage of an ascending vapor therethrough;
- and
- a plurality of valve covers mounted on each respective tray deck, each said valve cover having a central portion disposed in spaced relation to a respective orifice in a respective tray deck, a pair of sloped legs at opposite ends and a pair of guide vanes extending laterally and downwardly from said central portion towards and in spaced relation to said respective tray deck for deflecting a majority of the vapor ascending through a respective orifice towards said respective tray deck, each said guide vane being spaced from said respective tray deck in a range of from 3 to 10 mm.
1 more element
Dependencies are inferred from the claim text.