Study on Controlling Method of Dynamic-accumulation in Batch Distillation

A controlling method of total reflux by introducing temperatures of middle part and top part in batch distillation column was set up,and isopropanol and n-propanol were used to conduct the experimental study of this operation.The result indicated that the state switch of total reflux and total withdraw by controlling double-temperature in dynamic accumulation process was completely feasible.Furthermore,introducing the controlling point of middle part temperature in column could make the quantity and quality of product better that those of the method only using top part temperature,and double-temperature controlling operation was more flexible,but switching times was more than single-temperature controlling.