Process Simulation on Crude Naphthalene Purification by Extractive Distillation

摘要

The impurity of benzothiophthene can be removed by extractive distillation in the crude naphthalene purification process. A process simulation has been studied on the crude naphthalene purification. In the case of ensuring each fraction's naphthalene concentration, a sensitivity analysis is made to determine the optimal conditions by varying extractive distillation parameters such as the feed stage, the reflux ratio and the distillate rate. Besides controlling of the sensitive plate for the recovery section is also discussed.