Process for producing 2,3,3,3-tetrafluoropropene
View Patent ↗The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.
1. A method for purifying a composition containing 2-chloro-1, 1,1, 2-tetrafluoropropane (244bb) comprising:
providing a composition comprising 2-chloro-1,1,1,2-tetrafluoropropane and at least one unsaturated halogenated hydrocarbon impurity;
saturating the at least one unsaturated halogenated hydrocarbon impurity to produce a saturated halogenated hydrocarbon impurity; and
separating the saturated halogenated hydrocarbon impurity from the 2-chloro-1,1,1,2-tetrafluoropropane to produce a product containing less than 500 ppm of said saturated halogenated hydrocarbon impurity.
2. The method of claim 1 , wherein the saturating step comprises a photochlorination reaction.
3. The method of claim 1 , wherein the saturating step comprises a hydrogenation reaction.
4. The method of claim 1 , wherein the separating step comprises distillation.
5. The method of claim 1 , wherein the separating step comprises extraction.