Azeotropic compositions of hydrogen fluoride and Z-3,3,3-trifluoro-1-chloropropene
An azeotropic or quasi-azeotropic composition including hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene and one or more (hydro)halocarbon compounds including 1 to 3 carbon atoms. The (hydro) halocarbon compounds are preferably selected among tetrachlorofluoropropanes, trichlorodifluoropropanes, dichlorotrifluoropropanes, chlorotetrafluoropropanes, pentafluoropropanes, dichlorodifluoropropenes, chlorotrifluoropropenes and tetrafluoropropenes. A process for producing a main (hydro)halocarbon compound, including the formation of a mixture of compounds including hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene and one or more other (hydro)halocarbon compounds, distillation of this mixture making it possible to collect, firstly, an azeotropic composition, and, secondly, at least one of the compounds of the mixture.
1. An azeotropic or quasi-azeotropic composition comprising from 10% to 65% hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene and two or more (hydro)halocarbon compounds comprising from 1 to 3 carbon atoms.
2. The composition as claimed in claim 1 , in which the (hydro)halocarbon compound(s) comprise three carbon atoms.
3. The composition as claimed in claim 1 , in which the (hydro)halocarbon compounds are chosen from tetrachlorofluoropropanes, trichlorodifluoropropanes, dichlorotrifluoropropanes, chlorotetrafluoropropanes, pentafluoropropanes, dichlorodifluoropropenes, trichlorofluoropropenes, chlorotrifluoropropenes and tetrafluoropropenes.
4. The composition as claimed in claim 1 , comprising hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-3,3,3-trifluoro-1-chloropropene and one or more other (hydro)halocarbon compounds comprising from 1 to 3 carbon atoms.
5. The composition as claimed in claim 1 , comprising hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-1,3,3,3-tetrafluoropropene and one or more other (hydro)halocarbon compounds comprising from 1 to 3 carbon atoms.
6. The composition as claimed in claim 1 , comprising hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, Z-1,3,3,3-tetrafluoropropene and one or more other (hydro)halocarbon compounds comprising from 1 to 3 carbon atoms.
7. The composition as claimed in claim 1 , comprising hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, 1,1,1,3,3-pentafluoropropane and one or more other (hydro)halocarbon compounds comprising from 1 to 3 carbon atoms.
8. The composition as claimed in claim 1 , which is a quaternary mixture of:
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-3,3,3-trifluoro-1-chloropropene and 1,1,1,3,3-pentafluoropropane; or
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane; or
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, Z-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane.
9. The composition as claimed in claim 1 , which is a quinternary mixture of:
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-3,3,3-trifluoro-1-chloropropene, Z-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane; or
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-3,3,3-trifluoro-1-chloropropene, E-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane; or
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, Z-1,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane.
10. The composition as claimed in claim 1 , which is a senary mixture of:
hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene, E-3,3,3-trifluoro-1-chloropropene, Z-1,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane.
11. The composition as claimed in claim 1 , which is hetero-azeotropic or quasi-hetero-azeotropic.
12. The composition as claimed in claim 1 , which has a boiling point of 0 to 40° C. for a pressure from 0.5 to 9 bar absolute.