1、The effect of raw material composition on relative volatility is weak.

2、Physical properties refer to viscosity, density, surface tension, diffusion coefficient, relative volatility and so on.

3、Because of its low relative volatility with other components in system and its heat sensitivity, the separation difficulties and energy consumption are increased.

4、Under the assumption of constant molar overflows and relative volatility, a simplified model is developed to study the behavior of the distillation process under consideration.

5、The results showed that addition of appropriate extracting solvent could increase the relative volatility of active amyl alcohol and decrease the number of theoretical plates.