The azeotropic distillation method was used to separate the homogeneous azeotropic system of pyridine and water. The azeotropic distillation method was used to separate pyridine and water binary homozygous boiling system. Using the process simulation software Aspen Plus to simulate and optimize the operation parameters of the azeotropic distillation column, the effects of different operation parameters such as plate number, feed position and backflow ratio on the product purity and heating load of the distillation column were studyed. The simulation results show that the mass fraction of 60.8% pyridine is obtained at the top of the coboiling distillation tower, and 99.92% pyridine is obtained at the bottom of the distillation tower, and the parameters of the packed distillation column were optimized, which can guide the industrial equipment production.%采用共沸精馏法分离吡啶和水二元均相共沸物体系.利用Aspen Plus软件对共沸精馏塔进行模拟计算并优化塔的操作参数,分析了不同塔板数、进料位置、回流比等操作参数对产品纯度、精馏塔热负荷的影响.结果表明,当精馏塔的塔板数为22块,原料进料位置在第9块板,回流比为0.84时,共沸精馏塔塔顶可得到质量分数为60.8%的吡啶共沸物,塔底得到质量分数为99.92%的吡啶,通过优化设计填料精馏塔的相关参数,可指导工业装置生产.
展开▼
