PURIFYING COLD TRAP FOR HIGH PURITY HEXAFLUOROPROPYLEN

摘要

PURPOSE: A purification container for highly pure hexafluoropropylene is provided to easily and effectively remove impurities of high boiling point such as perfluorocompound and impurities of low boiling point such as O2, N2, CO, CH4, etc by using difference of boiling point between the hexafluoropropylene and impurities. CONSTITUTION: A purification container for highly pure hexafluoropropylene comprises: a reservoir(10) in which hexafluoropropylene flows in or is filled; a boiling point modification housing(20) capable of controlling internal temperature of the storage material by a boiling point modifier(23) flowing in; a vacuum housing(30) insulating the storage material and the boiling point modification housing by maintaining inside to a vacuum state; a vent pipe(50) discharging impurities or hexafluoropropylene vaporized by the difference of boiling points to outside; and a transport pipe(60) transporting hexafluoropropylene liquefied by the difference of boiling points to outside.