Experimental method for tray efficiency determination of a isotopic separation column by a hot cold process

Two methods are described for the experimental determination of the Murphee-efficiency applied to the traces of a separation column which represents a hot cold process. Combining the advantages of both methods, it can be proposed a third one which permits the determination of the tray efficiency and the slope of the operating line by concomitent measurements of 3 isotopic concentrations of the liquid phase in 3 different points of the column, and a concentration of the gaseous phase of the same tray with one of the liquid phase concentrations, respectively, in the point of minimal izotopic concentration. (author)