Abstract: A multiflow rotary heat exchanger element of the type normally used for the continuous processing of various materials through heating, cooling and stirring includes a shaft arranged to rotate within a container and having on its periphery a plurality of planar coil sets, each formed of a number of individual tubular coils. The coils are interconnected to form separate plural conduits, through each of which a fluid passes continuously and simultaneously. The arrangement is such that, during operation, the temperature of a material being processed is uniform in any plane transverse to the container, but uniformly and progressively altered longitudinally of the container.

Abstract: A pan for the continuous boiling of various liquids under vacuum includes an enclosed vessel divided into a series of interconnected compartments or stages provided with heating elements. During operation, boiling of the material is effected under optimum conditions as it flows continuously through the various stages from the feed end to the discharge end of the pan.