METHOD FOR PREPARING HEXAFLUOROPROPYLENE(HFP) BY PYROLYSIS OF TRIFLUOROMETHANE(R23) AND TETRAFLUOROETHYLENE(TFE)

摘要

PURPOSE: Provided is a method for preparing hexafluoropropylene by pyrolysis of trifluoromethane and tetrafluoroethylene, which can maximize a yield of the hexafluoropropylene. CONSTITUTION: The method is characterized in that mixture of trifluoromethane and tetrafluoroethylene having a molar ratio of 0.25-10 at inlet of reactor is simultaneously reacted under pyrolysis of trifluoromethane maintaining a reaction temperature of 750-950 deg.C and a contact time of reactor of 0.1-5 seconds and purifying system. The method can increase a yield of the hexafluoropropylene and save an unnecessary energy.