Method for separating acetophenone and alpha-phenethyl alcohol from mixture of acetophenone and alpha-phenethyl alcohol

The invention discloses a method for separating acetophenone and alpha-phenethyl alcohol from a mixture of the acetophenone and the alpha-phenethyl alcohol. The method comprises the following steps: (1) adding acetophenone and alpha-phenethyl alcohol to a material tank, controlling the temperature, the evaporation temperature, the reflux ratio and the vacuum degree of a molecular distillation and rectification coupling system rectification column, and respectively separating to obtain two components of a light component and a heavy component; (2) adding the light component to the material tank, controlling the temperature, the evaporation temperature, the reflux ratio and the vacuum degree of the molecular distillation and rectification coupling system rectification column, so as to obtain high-purity acetophenone; and (3) adding the heavy component to the material tank, controlling the temperature, the evaporation temperature, the reflux ratio and the vacuum degree of the molecular distillation and rectification coupling system rectification column, so as to obtain high-purity alpha-phenethyl alcohol. According to the separation method, the defects of conventional reduced pressure rectification and molecular distillation are compensated; the method is short in separation time and simple in flow; low-energy consumption and high-efficiency separation of two mixtures can be achieved; and the method is economic, environment-friendly, and easy to achieve industrialization.