Trays for vapor-liquid contact mass transfer columns and method support these trays.

摘要

A mass transfer column (20) going INCLUDING: an outer shell (22) defining an open region in- triple (24); at least one return contact tray (28) and at least one centrifugal contact tray overlaps ment (26) positioned in an alternating and vertically spaced relationship mind within the open internal region (24), said tray return contact (28) having a cover plate (31) having at least one aguje- ro to remove an upper surface of said return tray deck (31) and a plurality of vapor passages (34) to allow liquid steam flow upwardly through said return tray deck (31) to interact with liquid on said upper surface of said superfi- cover return tray (31), said centrifugal contact tray (26) a cover tray (30) having a Su- perior surface, a periphery and a plurality of vapor passages (34) for allowing vapor to flow upwardly TRA VES centrifuge said cover tray (30) for in - teractuar with liquid in said di- upper surface of cover cha centrifugal tray (30); at least one tube down central (42) which extends down into said hole in said return tray deck (28), said tube down central (42) an outlet bottom discharge (54); at least one annular downcomer (38) which extends downwardly in said periphery of said centrifugal tray deck contact (30) and having a lower discharge outlet (54) spaced above said tray cover return (31) for feeding said liquid onto said return tray deck (31); and a plurality of baffles (60) which extend upwardly from said contact tray re- winch (28) in said central tube down (42) and sopor- as said centrifugal contact tray overlap (26 ).