双储罐替代恒全回流半连续精馏操作方式的研究

发布时间：2018-03-02 12:38

本文选题：分离　切入点：设计　出处：《化工进展》2017年10期 　论文类型：期刊论文

【摘要】：提出双储罐替代的恒全回流半连续精馏操作方式(SCTR),该操作方式中塔顶和塔釜的双储罐分别交替使用,使精馏塔处于恒全回流状态,并能进行半连续地产品采出和原料补充。通过Matlab编程进行模拟,以轻重组分回收率、单位时间总产量(P.I.)等作为指标,在不同进料情况下对各参数的优化,包括储罐总体积、各储罐体积等。模拟结果表明,SCTR操作方式与恒回流比间歇精馏操作方式相比,最多可节省操作时间32%,与塔顶单储罐动态累积循环全回流间歇精馏相比,操作时间相近,与多储罐动态累积循环全回流间歇精馏操作方式相比,耗时略高。适用于轻组分浓度低的二元组分的分离。采用乙醇/正丙醇物系验证了该操作方式在进料浓度分别为0.2、0.5和0.8情况下的可行性和操作的简单灵活。
[Abstract]:A semi-continuous distillation operation with constant total reflux was put forward, in which the top of the tower and the tank of the tower were alternately used in order to keep the distillation column in the state of constant total reflux. It can be used for semi-continuous product extraction and raw material supplement. The simulation is carried out by Matlab programming. With the light and heavy component recovery rate, the total yield per unit time and P.I.) as the index, the parameters, including the total volume of the storage tank, are optimized under different feed conditions. The simulation results show that the operation time of SCTR is at most 32 less than that of batch distillation with constant reflux ratio, and the operating time is close to that of dynamic accumulative total reflux batch distillation of single tank on top of the tower. Compared with multi-tank dynamic accumulative cycle total reflux batch distillation operation, It is suitable for the separation of binary components with low light component concentration. The feasibility and flexibility of the operation are verified by using ethanol / n-propanol system at feed concentration of 0.2g 0.5 and 0.8 respectively.
【作者单位】：天津大学化工学院制药工程系教育部系统生物工程教育部重点实验室;
【基金】：天津大学自主创新基金(2016XZC-0071) 天津市自然科学基金(16JCYBJC20300)项目
【分类号】：TQ028.31

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