Centrifugal evaporation of organic solvents from a series of solutions

Abstract

AbstractA centrifugal vacuum evaporator designed for the evaporation of organic solvents from a series of solutions has been fabricated and tested. The rotor is driven by a spinning magnetic field resulting from rotating magnets mounted on a wheel connected to the drive shaft of an electric motor beneath the vacuum chamber. The spinning magnetic field produces eddy currents in an aluminum dise in the vacuum chamber, thus rotating the disc and the attached rotor. A variety of organic solvents were readily evaporated in this device. Auxiliary heating was used to increase the evaporation rate of certain solvents. In this evaporator organic solvents are removed from a series of solutions simultaneously, at low temp, and in a partial vacuum, thus minimizing or preventing solute degradation by heat and oxygen.