Rotating evaporator device for liquid distillation or concentration

A rotating evaporator, comprising;

• a housing comprising a chamber;
• a rotor assembly disposed in the chamber and comprising:
• distillation elements that each comprise an internal cavity, condensation surfaces that face the internal cavity, and evaporation surfaces that face away from the internal cavity;
• and
• a vapor manifold extending through the distillation elements and configured to provide a vapor to the internal cavities;
• wiper assemblies configured to form a liquid film on the evaporation surfaces;
• condensate scoops located in the respective inner cavities of the distillation elements and configured to collect a condensate from the condensation surfaces;
• a condensate manifold extending through the vapor manifold and configured to receive the condensate from the condensate scoops;
• and
• a drive assembly configured to rotate the rotor assembly, the drive assembly comprising:
• a drive shaft;
• and
• drive rollers disposed on the drive shaft and contacting outer circumferential contact surfaces of the distillation elements;
• wherein:
• each distillation element comprises a pair of annular evaporator disks, each evaporator disk comprising an outer circumferential edge, an inner circumferential edge, the condensation surface, and the evaporation surface;
• the outer circumferential edges of each pair of evaporator disks are connected to form the outer circumferential contact surfaces;
• and
• the inner circumferential edges of the evaporator disks of adjacent distillation elements are connected to form the vapor manifold.