Patent ID: 8242316

Claim:
A method for producing 1,1,1,2-tetrafluoropropene comprising: a. hydrogenating a starting material stream comprising hexafluoropropylene by contacting said starting material stream with a reducing agent to produce an intermediate stream comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,2,3,3-hexafluoropropane; b. dehydrofluorinating said 1,1,1,2,3-pentafluoropropane and at least a portion of said 1,1,1,2,3,3-hexafluoropropane reactor to produce a product stream comprising 1,1,1,2-tetrafluoropropene and 1,1,1,2,3-pentafluoropropene; c. separating at least a portion of said 1,1,1,2,3-pentafluoropropene from said 1,1,1,2-tetrafluoropropene to produce a recycle stream rich in 1,1,1,2,3-pentafluoropropene and a final product stream rich in said 1,1,1,2-tetrafluoropropene; and d. introducing said recycle stream to step (a), wherein at least a portion of said 1,1,1,2,3-pentafluoropropene is hydrogenated to form a portion of said 1,1,1,2,3-pentafluoropropane.