Regime diagram for the stripping section of a column for purification of the major components from volatile impurities

The authors construct liquid-vapor phase equilibrium diagrams depicting the devolatilization of methanol and ethanol from volatile impurities--isopropanol, isobutanol, decane, undecane, dodecane, and tridecane--under distillation conditions in a distillation column. Temperature and pressure as well as concentration dependencies are analyzed as are dilution requirements for the various impurities.