Separation of benzene and thiophene from coal-tar oil by extractive distillation is modelled by the tri-diagonal matrix method, the results provide a base for designing a thiophene plant.

• 本文采用三对角矩阵法模拟计算苯和噻吩的萃取精馏分离,模拟结果为噻吩工业生产设计提供了依据。