Rotor film mass and heat exchanger

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. The exchanger is provided with refluxing devices for moving the liquid from one reflux stage to another, said devices being made in the form of a spray collector secured to the inner surface of the casing and intended to receive the liquid thrown off from any one reflux stage; said spray collector is constituted by a circular trough embracing the reflux stage and having in its inner space a partition connected with the periphery of the reflux stage, arranged across the circular trough, and an overflow pipe whose inlet end communicates with the spray collector whereas its outlet end is brought to another reflux stage to which the liquid is to be delivered.