Simulation of the Separation of Quinoline from Isoquinoline by Batch Distillation

Using Aspen Batch Distillation, batch distillation of quinoline-isoquinoline binary system was simulated and calculated. The effect of the number of plates, reflux ratio, condenser pressure, feed composition,reboiler steam flow rate and distillation time on the content and yield of quinoline separation was studied. The optimal values are as follows: the number of plates 60, reflux ratio 8, the condenser pressure 6 k Pa, the feed quinoline content 70%, the reboiler steam flowrate 30 kg/h and the distillation time 16 h. The purity and the yield of quinoline reach 99.2% and 71.0%, respectively, under the optimal batch distillation conditions.