CONTACT TRAY FOR A MASS TRANSFER COLUMN

摘要

A valve contact tray for use in a mass transfer or heat exchange column and having a plurality of fixed or moveable valves distributed across a tray deck of the contact tray. Each of the valves includes an opening in the tray deck, a valve cover connected to attachment legs, and a weir surrounding the opening. The valve cover is wider than and extends outwardly beyond the underlying opening in the tray deck and has a perimeter region that extends downwardly. A louvered vent opening may be provided in a downstream one of the attachment legs.

主权项

1. A contact tray for use in a mass transfer column, said contact tray comprising:
a generally planar tray deck; and a plurality of valves distributed across the tray deck, each of said valves comprising an opening that extends through the tray deck to allow for passage of fluid through the tray deck, a weir extending upwardly from the tray deck around a perimeter of the opening, and a valve cover supported by attachment legs above said opening and said weir, wherein said valve cover extends outwardly beyond the entire perimeter of said opening and has a downwardly extending perimeter region.