| 摘要 |
A method of producing 1,1,1,2-tetrafluoroethane in two separation reaction zones involving (1) reaction of trichloroethylene and hydrogen fluoride to produce l,l,l-trifluoro-2-chloroethane and (2) reaction of the 1,1,1-trifluoro-2-chloroethane and hydrogen fluoride to produce 1,1,1,2-tetrafluoroethane wherein both reactions are carried out at superatmospheric pressure, reaction (2) is carried out at a temperature in the range of 250 DEG -450 DEG C., reaction (1) is carried out at a temperature in the range of 200 DEG -400 DEG C. but below that used in reaction (2) and unconverted 1,1,1-trifluoro-2-chloroethane is recycled for further reaction with hydrogen fluoride.
|
