Method for separating pentene-1 from C5 by-production distillates

The present invention discloses a method for separating pentene-1. According to the present invention, the by-production distillates being subjected to diolefin and isopentene removing during a C5 separation process are adopted as raw materials, and etherification, simple rectification and azeotropic rectification are performed to obtain the high-purity pentene-1; the technical defects of difficult separation of the pentene-1 from the C5 raw materials, complex process and high energy consumption in the prior are solved with the method of the present invention; and with the application of the method to separate the pentene-1 from the C5 distillates, the characteristics of high purification precision, stable product quality, low energy consumption, stable operation and easy industrial production are provided. 本发明公开种分离戊烯-1的方法，以碳五分离过程中，脱除了双烯烃和异戊烯的副产馏分为原料，采用醚化、简单精馏和共沸精馏的方法得到高纯度戊烯-的工艺方法，解决了现有技术中，分离碳五原料中戊烯-1困难，工艺流程复杂，能耗高的技术缺陷。采用本发明分离碳五馏分中的戊烯-1，具有提纯精度高、产品质量稳定、能耗低、操作稳定、易于工业化生产的特点。