Abstract: Disclosure is made of a counter-current gas-liquid contact apparatus whose shell provided with gas and liquid admission and discharge branch pipes accommodates reflux plates arranged one above another with gaps in between; said reflux plates are made in the form of trays open at the top and assembled into packs; said trays have counter-opposed inclined rims and are arranged on a descending spiral so that there remain passages in the shell between the tray rims and the shell walls for the vertical flow of gas; said passages accommodate horizontal guide baffles which partition completely said passages and deflect the gas flow from one passage into another through the gaps between the trays in the direction from one inclined rim to the other.

Abstract: A rotor film mass and heat exchanger comprises a casing of a circular cross section with liquid and gas inlet pipe connections at one end and with liquid and gas outlet pipe connections at the other. Installed coaxially and rotatably in the casing is a shaft carrying reflux stages which are formed by bands bent as spirals diverging from said shaft and flanged towards the latter.

Abstract: A rotor film apparatus for processes with participation of liquid and gas having a casing, at least one refluxing stage arranged rotatably in said casing, and an appliance for delivering liquid to the refluxing stage. The refluxing stage is formed by at least one trough curved into a spiral which uncoils from the axis of the refluxing stage. The hollow of the trough is located at the concave side of the spiral. As the portions of the trough depart gradually from the axis of the refluxing stage, they are displaced in one direction parallel to the axis so that the refluxing stage as a whole is shaped like a bowl.

Abstract: A rotary film apparatus comprising a vertical body housed in a jacket and having a heat-exchanging surface formed, according to the invention, by series-connected and oppositely directed conjugated truncated cones, the bases of said cones being made rounded.

Abstract: The invention relates to an apparatus for heat-mass exchange processes with participation of a liquid, comprising at least one sprinkling device installed in the casing with a provision for rotation around its own axis and made up from chutes curved into a multiple-start spiral diverging from the axis of the sprinkling device. At least the peripheral portions of at least two chutes, as they gradually recede from the axis of the sprinkling device, are displaced in a direction parallel to the axis of the sprinkling device so that the peripheral ends of the chutes are arranged in different planes which are perpendicular to the axis of the sprinkling device.

Abstract: The film-type rotary mass-and-heat exchange column comprises a shell which accommodates a vertical shaft carrying the contact stages held in position thereto. The contact stages are formed by the bands curved into the spirals diverging from the shaft and flanged towards the latter at their edges. The bands are provided with longitudinal beads bulging outwards on the concave surface of the bands so as to establish a number of channels adjacent for height.