Abstract: A column apparatus for gas-liquid heat and mass exchange processes comprising contact plates arranged one above another, and provided with slots for the passage of gas therethrough. The contact plates are surrounded by annular pockets for discharging liquid flowing off the contact plates. The discharge of liquid from the annular pocket of an upper contact plate to the contact plate therebelow is effected through discharge pipes, the top ends of which are in communication with the annular pocket of the upper contact plate, the bottom ends thereof terminating slightly above the top surface of a solid center portion of the lower plate and being surrounded by two coaxial rings. These rings are also slightly above the top surface of the center portion of the contact plate in such a manner, that as the liquid is being discharged, there is formed a hydroseal without any stagnant areas.

Abstract: A contact plate for columns for carrying out heat exchange and mass transfer processes comprising a disc provided with slots for the passage of gas. The slot edges have curved deflectors which send gas jets passing through the slots in one direction, tangentially to the disc, and at a certain angle to the latter's surface. On the side of the disc which is intended for the reception of liquid there are arranged deflector strips in the form of Archimedean spirals diverging from the center of the disc and bent in the direction of gas jets following their contact with the curved deflectors.