Abstract: A tray (100) for a gas/liquid contact column, comprising a plurality of chimneys (108) jutting over a portion (101) of the upper face of the tray for the exclusive passage of gas through the tray; they are substantially parallelepipedal and mutually parallel. At least one of the chimneys (108) is surmounted by an elevated hat (108?) with a streamlined profile which prevents the passage of liquid through the chimney. The hat comprises a lower body (180) which is substantially semi-cylindrical, elongated along the longitudinal axis Y and open towards the top, extended laterally by two planar fins (181, 182) inclined towards the axis of revolution (R) of the lower body at an angle ? in the range 0° to 30° with respect to the axis Z passing through the chimneys, aligned with their height.