Abstract:

This paper introduces the present situation of coking benzene refining process in China,analyzes the features of different processes with respect of solvent,compares the effect of NFM and SUL-COS in extractive distillation process,and provides suggestion on process selection.Extractive distillation process is more suitable for coking benzene refining for its advantages of low investment,less equipment unit,lower pollution risk,high recovery rate and production purity,less energy consumption and operation cost,and good adaptability of raw material.