连续隔壁塔分离乙二胺衍生物的模拟优化  

Simulation optimization of separating ethylenediamine derivatives by dividing wall columns

作　　者：何晓旭 鄢烈祥 史彬 HE Xiao-xu;YAN Lie-xiang;SHI Bin(School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Technology,Wuhan 430070,Hubei Province,China)

机构地区：[1]武汉理工大学化学化工与生命科学学院

出　　处：《化学工程》2019年第8期16-21,共6页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(201878238)

摘　　要：二氯乙烷法制乙二胺会产生多种具有较高经济价值的副产品,为分离得到此类高纯度的副产品,提出采用2个连续隔壁塔分离的新工艺。首先,使用Aspen Plus设计并模拟连续隔壁塔分离乙二胺衍生物流程,验证该工艺的可行性。然后,以年度总费用(TAC)为优化目标,对各塔理论塔板数、隔板位置、进料位置、侧线采出位置等设计参数进行优化。最后,将优化后的连续隔壁塔流程与已优化的常规直接分离序列进行比较,结果表明:隔壁塔流程可降低再沸器负荷23.15%,降低操作费用18.59%,年度总费用降低12.11%。因此,使用隔壁塔技术分离乙二胺衍生物可以有效地节约能耗、降低成本。In the process of ethylenediamine production by dichloroethane,a variety of high-value by-products are produced.In order to separate these by-products,a novel process by using two dividing wall columns is proposed.First,Aspen Plus is adopted to design and simulate the separation process and to verify its feasibility.Then the design parameters such as number of stage,partition position,feed stage and side product stage are optimized to minimize the annual total cost(TAC)of the proposed process.Finally,the optimized process are compared with the optimized conventional direct separation sequences process.Simulation result shows that the proposed separation process can reduce the reboiler duty by 23.15%,reduce the operating cost by 18.59%,and reduce TAC by 12.11%.Therefore,using the two dividing wall columns technology to separate the ethylenediamine derivatives can effectively reduce energy consumption and costs.

关 键 词：隔壁塔 乙二胺衍生物 模拟 优化 

分 类 号：TQ021.8[化学工程]