Azeotropic distillation technique is an important way to separat close-boiling or azeotropic systems, in which the flow of entrainer is an important factor to affect separation property.

• 恒沸精馏是分离近沸点与恒沸物系的重要手段,挟带剂量是影响恒沸精馏分离性质的重要因素。