Method for separation of perfluoropropane in perfluoropropylene production process

The invention relates to a method for separation of perfluoropropane in a perfluoropropylene production process. The method includes steps: 1) rectifying lysate generated in the perfluoropropylene production process to obtain preliminarily-separated perfluoropropylene-containing perfluoropropane; 2) extracting the preliminarily-separated perfluoropropylene-containing perfluoropropane to obtain perfluoropropane dissolved extract agent; 3) subjecting the perfluoropropane dissolved extract agent to desorption to obtain perfluoropropane which contains trace of the extract agent; 4) removing the extract agent from the extract agent contained perfluoropropane to obtain perfluoropropane. The method has advantages that perfluoropropylene recycling is realized while pure perfluoropropane is obtained, material waste is reduced, and environment pollution is abated. 本发明涉及种全氟丙烯生产过程中全氟丙烷的分离方法，包括如下步骤：1)对全氟丙烯生产过程中产生的裂解液进行精馏，得到混有全氟丙烯的初步分离的全氟丙烷；2)将所述混有全氟丙烯的初步分离的全氟丙烷进行萃取，得到溶有全氟丙烷的萃取剂；3)将所述溶有全氟丙烷的萃取剂进行解析，得到含微量萃取剂的全氟丙烷；4)去除含萃取剂的全