为解决炼厂生产2-PH（2-丙基庚醇）的主流生产工艺原料（醚后C₄）中烷烃比例较高、烷烃无法直接参与反应的问题，研究了使用N-甲酰吗啉与甲乙酮混合溶剂对炼厂醚后C₄进行丁烯提浓的技术方案，并基于Aspen Plus软件进行了模拟分析，为在大型炼厂中建设2-PH装置提供参考。

In order to solve the problem that the proportion of alkanes in post MTBE C₄ feedstock is relatively high,and alkanes cannot directly participate in the reaction in the main production process of 2-propyl-1-heptanol (2-PH) adopted by the refinery,the technical scheme that increase butene concentration in post MTBE C₄ feedstock in refinery by using mixed solvent of N-formyl morpholine and methyl ethyl ketone is studied.Simulation analysis is performed based on Aspen Plus software,aiming to provide reference for the construction of 2-PH unit in large refinery.