针对乙二醇丁醚混合物的特征和分离要求，提出用隔壁精馏塔（DWC）分离混合物的工艺，并利用Aspen Plus模拟技术开展塔的优化设计与节能分析。首先设计出分离混合物的传统双塔工艺，在此基础上对DWC进行设计与优化。为了考察DWC工艺的可行性和节能效果，研究采用能量衡算和GFDA3损失分析2种方法对系统的用能特性进行分析。结果表明，相比于传统双塔工艺，DWC的再沸器负荷、冷凝器负荷分别减少了27.4%、32.4%，总GFDA3损失减少了33.7%，体现了DWC工艺的节能优势。

A new technology using a dividing wall column (DWC) to separate ethylene glycol monobutyl ether mixture is proposed by taking into account the characteristics of the separation system under study.The design of DWC and the analysis of energy saving superiority is performed by means of computer simulations on Aspen Plus software platform.Firstly,a conventional two-column distillation flowsheet is proposed and designed to provide a basis for the design of DWC.The simulation,design and optimization of DWC is then carried out.In order to investigate the feasibility and energy saving superiority of the suggested DWC process,two approaches based on energy balance analysis and exergy loss analysis are employed to analyze the energy consumption characteristics of the system.The obtained results demonstrate that compared with the conventional two-column distillation process,total reboiler duty,total condenser duty and total exergy loss of DWC process reduce by 27.4%,32.4% and 33.7%,respectively,indicating an obvious energy saving advantage.

侯瞬(1995-),女,硕士生