Abstract: Progresses in the application of C5 fraction and the research of C5 fraction separation technology are reviewed. Characteristics of several important separation processes and some newly developed technologies，which are believed to have potentials with high energy efficiency and economic performance，are introduced，such as thermally coupled distillation，heat-integration，chemical absorption and membrane separation etc. The prospects for the separation technology of C5 fraction are discussed，such as optimization in technologies，energy saving and new extractant development etc.

摘要： 简要介绍了C5馏分的用途以及国内外C5馏分分离技术的研究进展，叙述了几种主要分离工艺流程的特点和近年来开发的一些新技术，如在节能降耗和提高经济效益方面具有很大潜力的热耦精馏、热集成、化学吸收及膜分离等方法，展望了C5馏分分离技术在工艺优化、节能、开发新型萃取溶剂等方面的前景。