SEARCH Articles Figures Tables Distillation columns Murphree vapor efficiency Dry Murphree efficiency Efficiencies Modified Murphree Leaching Murphree efficiencies Modified Murphree plate efficiency ( Murphree Murphree plate efficiency Murphree point efficiency Murphree raffinate stage efficiency Murphree stage efficiency Murphree tray efficiency Murphree vapor efficiency Murphree vapor efficiency columns Murphree vapor efficiency equation