centrifugal molecular still

centrifugal molecular still

[‚sen′trif·i·gəl mə′lek·yə·lər ′stil]
(chemical engineering)
A device used for molecular distillation; material is fed to the center of a hot, rapidly rotating cone housed in a chamber at a high vacuum; centrifugal force spreads the material rapidly over the hot surface, where the evaporable material goes off as a vapor to the condenser.