异丙醇-异丙醚-水三元物系分离的模拟与研究

发布时间：2018-03-20 05:07

本文选题：异丙醇　切入点：异丙醚　出处：《现代化工》2017年03期 　论文类型：期刊论文

【摘要】：提出了非均相层析-萃取精馏分离工艺,并基于Aspen Plus对该分离过程进行模拟研究,以得到质量分数为98.3%的异丙醚和99%的异丙醇,水相异丙醚的质量分数小于2×10-5,异丙醇的质量分数小于1×10-4为目标,确定了粗馏塔、醚精制塔、异丙醇精制塔、乙二醇回收塔最佳工艺参数。粗馏塔的理论塔板数为26,进料板位置为第13块理论板,摩尔回流比为0.14。醚精制塔的理论塔板数为23,进料板位置分别为第3和15块理论板,摩尔回流比为0.92。异丙醇精制塔的理论塔板数为25,进料板位置为第3和第18块理论板,摩尔回流比为2.85。乙二醇回收塔的理论塔板数为40,进料板位置为第15块理论板,摩尔回流比为0.08。总体工艺具有流程简单、产品纯度高、易于操作的特点。
[Abstract]:The separation process of heterogeneous chromatography-extraction distillation was proposed, and the separation process was simulated based on Aspen Plus to obtain isopropyl ether with mass fraction of 98.3% and isopropanol with 99%. The content of isopropyl ether in aqueous phase is less than 2 脳 10 ~ (-5) and the mass fraction of isopropanol is less than 1 脳 10 ~ (-4). The crude distillation column, ether refining tower and isopropyl alcohol refining column are determined. The optimum process parameters of ethylene glycol recovery tower are as follows: the theoretical plate number of crude distillation tower is 26, the position of feed plate is the 13th theoretical plate, the molar reflux ratio is 0.14. The theoretical plate number of ether refining tower is 23, and the position of feed plate is the third and fifteenth theoretical plates, respectively. The molar reflux ratio is 0.92.The theoretical tray number of isopropanol refining tower is 25, the position of feed plate is the 3rd and 18th theoretical plate, the molar reflux ratio is 2.85. The theoretical tray number of ethylene glycol recovery tower is 40, and the position of feed plate is the 15th theoretical plate. The molar reflux ratio is 0.08. The overall process has the characteristics of simple flow, high purity and easy operation.
【作者单位】：北京化工大学化工学院;
【分类号】：TQ028

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