EP3762354A1 - Procédé de production du 2-chloro-3,3,3-trifluoropropène - Google Patents
Procédé de production du 2-chloro-3,3,3-trifluoropropèneInfo
- Publication number
- EP3762354A1 EP3762354A1 EP19715970.0A EP19715970A EP3762354A1 EP 3762354 A1 EP3762354 A1 EP 3762354A1 EP 19715970 A EP19715970 A EP 19715970A EP 3762354 A1 EP3762354 A1 EP 3762354A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stream
- catalyst
- carried out
- chloro
- trifluoropropene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- OQISUJXQFPPARX-UHFFFAOYSA-N 2-chloro-3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C(Cl)=C OQISUJXQFPPARX-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000003054 catalyst Substances 0.000 claims abstract description 42
- ZXPCCXXSNUIVNK-UHFFFAOYSA-N 1,1,1,2,3-pentachloropropane Chemical compound ClCC(Cl)C(Cl)(Cl)Cl ZXPCCXXSNUIVNK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- PQUUGVDRLWLNGR-UHFFFAOYSA-N 2,3,3,3-tetrachloroprop-1-ene Chemical compound ClC(=C)C(Cl)(Cl)Cl PQUUGVDRLWLNGR-UHFFFAOYSA-N 0.000 claims abstract description 10
- UMGQVBVEWTXECF-UHFFFAOYSA-N 1,1,2,3-tetrachloroprop-1-ene Chemical compound ClCC(Cl)=C(Cl)Cl UMGQVBVEWTXECF-UHFFFAOYSA-N 0.000 claims abstract description 9
- QJMGASHUZRHZBT-UHFFFAOYSA-N 2,3-dichloro-1,1,1-trifluoropropane Chemical compound FC(F)(F)C(Cl)CCl QJMGASHUZRHZBT-UHFFFAOYSA-N 0.000 claims abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 37
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 9
- IAOGXBHBKZGVGJ-UHFFFAOYSA-N 2,3,3-trichloro-3-fluoroprop-1-ene Chemical compound FC(Cl)(Cl)C(Cl)=C IAOGXBHBKZGVGJ-UHFFFAOYSA-N 0.000 claims description 8
- IAPGBTZUBKUKOR-UHFFFAOYSA-N 2,3-dichloro-3,3-difluoroprop-1-ene Chemical compound FC(F)(Cl)C(Cl)=C IAPGBTZUBKUKOR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 7
- QCMJBECJXQJLIL-UHFFFAOYSA-L chromium(6+);oxygen(2-);difluoride Chemical compound [O-2].[O-2].[F-].[F-].[Cr+6] QCMJBECJXQJLIL-UHFFFAOYSA-L 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- FDOPVENYMZRARC-UHFFFAOYSA-N 1,1,1,2,2-pentafluoropropane Chemical compound CC(F)(F)C(F)(F)F FDOPVENYMZRARC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910021563 chromium fluoride Inorganic materials 0.000 claims description 4
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- FTBATIJJKIIOTP-UHFFFAOYSA-K trifluorochromium Chemical compound F[Cr](F)F FTBATIJJKIIOTP-UHFFFAOYSA-K 0.000 claims description 4
- 239000003426 co-catalyst Substances 0.000 claims description 3
- 238000004821 distillation Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000003682 fluorination reaction Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000008246 gaseous mixture Substances 0.000 description 6
- 239000007792 gaseous phase Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 239000007858 starting material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- -1 hydrofluoroolefins Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910001507 metal halide Inorganic materials 0.000 description 3
- 150000005309 metal halides Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- AIYUHDOJVYHVIT-UHFFFAOYSA-M caesium chloride Chemical compound [Cl-].[Cs+] AIYUHDOJVYHVIT-UHFFFAOYSA-M 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- GVVUPGXFVJLPDE-OWOJBTEDSA-N (e)-1,3,3,3-tetrachloroprop-1-ene Chemical compound Cl\C=C\C(Cl)(Cl)Cl GVVUPGXFVJLPDE-OWOJBTEDSA-N 0.000 description 1
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012025 fluorinating agent Substances 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000007172 homogeneous catalysis Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/18—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds containing fluorine
Definitions
- the present invention relates to the production of hydrofluoroolefins. More particularly, the present invention relates to the production of 2-chloro-3,3,3-trifluoropropene.
- Halogenated hydrocarbons particularly fluorinated hydrocarbons such as hydrofluoroolefins, are compounds which have a useful structure as functional materials, solvents, refrigerants, blowing agents and monomers for functional polymers or starting materials for such monomers.
- Hydrofluoroolefins such as 2,3,3,3-tetrafluoropropene (HFO-1234yf) are attracting attention because they offer promising behavior as low global warming potential refrigerants.
- the processes for producing fluoroolefins are usually carried out in the presence of a starting material such as an alkane containing chlorine or a chlorine-containing alkene, and in the presence of a fluorinating agent such as hydrogen fluoride. These processes can be carried out in the gas phase or in the liquid phase, in the absence or absence of catalyst.
- 2-Chloro-3,3,3-trifluoropropene is known as an intermediate for the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) and as a monomer component for various types of polymers.
- 2-chloro-3,3,3-trifluopropene can be obtained from a compound such as
- WO 2007/079431 discloses a process for producing 2-chloro-3,3,3-trifluoropropene in the gas phase in the presence of hydrofluoric acid and a chromium-based catalyst. Also known from WO 2012/052797 is a process for producing 2-chloro
- the present invention relates to a process for producing 2-chloro-3,3,3-trifluoropropene comprising the steps of:
- step a) characterized in that the electrical conductivity of said stream A supplied in step a) is less than 15 mS / cm.
- the present process optimizes and improves the production of 2-chloro-3,3,3-trifluoropropene.
- An electrical conductivity value of less than 15 mS / cm of the current A before the fluorination step is carried out makes it possible to guarantee optimum efficiency of the reaction in terms of conversion and selectivity. If a catalyst is present, such a value also ensures optimal catalyst efficiency.
- step b) is carried out in the gaseous phase in the presence or absence of a catalyst.
- step b) is carried out in the liquid phase in the presence of a catalyst.
- the electrical conductivity of said current A is less than 10 mS / cm.
- step b) is carried out in the presence of a chromium-based catalyst, in particular said catalyst comprises a chromium oxyfluoride or a chromium oxide or a chromium fluoride or a mixture of them.
- the catalyst is based on chromium and also comprises a co-catalyst selected from the group consisting of Ni, Zn, Co, Mn or Mg, preferably the content of cocatalyst is between 0, 01% and 10% based on the total weight of the catalyst.
- stream B comprises, in addition to 2-chloro-3,3,3-trifluoropropene, HCl, HF, 2,3,3,3-tetrafluoropropene, and optionally 2,3-dichloro-3,3 difluoropropene, 2,3,3-trichloro-3-fluoropropene and / or 1,1,1,2,2-pentafluoropropane.
- step b) is carried out at a temperature of between 320 ° C. and 440 ° C. According to a preferred embodiment, step b) is carried out in the presence of hydrofluoric acid having an electrical conductivity of less than 10 mS / cm.
- the present invention relates to a process for producing 2-chloro-3,3,3-trifluoropropene comprising the steps of:
- the electrical conductivity of said current A supplied in step a) is less than 15 mS / cm.
- the electrical conductivity of said current A supplied in step a) is less than 14 mS / cm, preferably less than 13 mS / cm, more preferably less than 12 mS / cm, in particular less than 11 mS / cm, more especially less than 10 mS / cm, preferably less than 9 mS / cm, advantageously preferred less than 8 mS / cm, preferentially preferred less than 7 mS / cm, more preferably preferred less than 6 mS / cm cm, particularly preferably less than 5 mS / cm.
- the electrical conductivity is measured using an inductive conductivity measuring cell and according to the practice known to those skilled in the art.
- the measurement of the electrical conductivity is carried out at ambient temperature.
- the measurement of the electrical conductivity is carried out at a pressure equal to the pressure at which step b) is implemented.
- the electrical conductivity of the current A may be reduced to reach a conductivity of less than 15 ms / cm by decreasing the electrolyte concentration that may be present therein according to the techniques known to those skilled in the art (distillation, cooling and decantation, passage on molecular sieves of 3 to 5 A or zeolites).
- the measuring cell is coated with a material resistant to a corrosive medium, in particular resistant to hydrofluoric acid.
- the electrical conductivity of said current A is measured prior to step b).
- the electrical conductivity of said current A is measured when it is in liquid form.
- Said method according to the present invention may therefore comprise a step of heating and vaporization of said current A prior to the implementation of step b) to provide said stream A in gaseous form.
- said stream A implemented in step b) is in gaseous form when it is brought into contact with HF.
- step b) is carried out in the gaseous phase in the presence of a catalyst, preferably a chromium-based catalyst.
- a catalyst preferably a chromium-based catalyst.
- the chromium-based catalyst may be a chromium oxide (for example Cr 2 O 2, CrC 3 or Cr 2 C 3), a chromium oxyfluoride or a chromium fluoride (for example CrF 5) or a mixture thereof .
- the chromium oxyfluoride may contain a fluorine content of between 1 and 60% by weight based on the total weight of the chromium oxyfluoride, advantageously between 5 and 55% by weight, preferably between 10 and 52% by weight, more preferably between 15 and 52% by weight, in particular between 20 and 50% by weight, more particularly between 25 and 45% by weight, preferably between 30 and 45% by weight, more preferably from 35 to 45% by weight. by weight of fluorine based on the total weight of the chromium oxyfluoride.
- the catalyst may also comprise a co-catalyst selected from the group consisting of Ni, Co, Zn, Mg, Mn, Fe, Zn, Ti, V, Zr, Mo, Ge, Sn, Pb, Sb; preferably Ni, Co, Zn, Mg, Mn; in particular Ni, Co, Zn.
- the content by weight of the cocatalyst is between 1 and 10% by weight based on the total weight of the catalyst.
- the catalyst can be supported or not.
- a carrier such as alumina, activated alumina, aluminum halides (AlF 3 for example), aluminum oxyhalides, activated carbon, magnesium fluoride or graphite can be used.
- the catalyst may have a specific surface area of between 70 and 225 m 2 / g, advantageously between 90 and 200 m 2 / g, preferably between 100 and 190 m 2 / g, in particular between 125 and 180 m 2 / g .
- the catalyst may have a specific surface area of between 1 and 100 m 2 / g, preferably between 5 and 80 m 2 / g, more preferably between 5 and 70 m 2 / g, ideally between 5 and 50 m 2 / g, in particular between 10 and 50 m 2 / g, more particularly between 15 and 45 m 2 / g.
- step b) is carried out in the gaseous phase in the absence of catalyst.
- step b) When step b) is carried out in the gas phase, in the absence or in the presence of catalyst, the pressure at which step b) is carried out may be atmospheric pressure or a pressure greater than this.
- the pressure at which step b) is carried out may be greater than 1.5 bara, preferably greater than 2.0 bara, in particular greater than 2.5 bara, more particularly greater than 3.0 bara.
- step b) can be carried out at a pressure comprised between the pressure and 20 bara, preferably between 2 and 18 bara, more preferably between 3 and 15 bara.
- step b) of the present process is carried out with a contact time of between 1 and 100 seconds, preferably between 2 and 75 seconds, in particular between 3 and 50 s.
- the HF molar ratio and said at least one of the compounds of said stream A ie 2,3-dichloro-1,1,1-trifluoropropane, 1,1,1,2,3-pentachloropropane, 1,1,2 , 3-tetrachloropropene and 2,3,3,3-tetrachloropropene, may vary between 1: 1 and 150: 1, preferably between 2: 1 and 125: 1, more preferably between 3: 1 and 100: 1.
- An oxidant such as oxygen or chlorine, can be added during step b).
- the molar ratio of the oxidant to the hydrocarbon compound may be between 0.005 and 2, preferably between 0.01 and 1.5.
- the oxidant may be pure oxygen, air or a mixture of oxygen and nitrogen.
- step b) in the gaseous phase, in the absence or in the presence of catalyst, is carried out at a temperature of between 320 ° C. and 440 ° C., advantageously between 320 ° C. and 420 ° C. ° C, preferably between 330 ° C and 400 ° C, more preferably between 330 ° C and 390 ° C, in particular between 340 ° C and 380 ° C.
- step b) can be carried out in the liquid phase.
- step b) is carried out in the liquid phase and in the presence of a catalyst.
- the catalyst may be a Lewis acid, a metal halide-containing catalyst, in particular an antimony halide, tin, tantalum, titanium, a transition metal such as molybdenum, niobium, iron, cesium, transition metal oxides, Group IVb metal halides, Group Vb metal halides, chromium fluoride, fluorinated chromium oxides, or a mixture thereof.
- the catalyst may be SbCl 5 , SbCU, TiCl 4 , SnCl 4 , TaCl 5 , NbCl 5 , TiCl 4 , FeCb, MoC, CsCl, and the corresponding fluorinated compounds.
- the catalyst may contain an ionic liquid as described for example in WO2008 / 149011 (in particular on page 4, line 1 to page 6 line 15, included by reference) and WO01 / 81353, as well as the reference “liquid”.
- -phase HF Fluorination "Multiphase Homogeneous Catalysis, Ed. Wiley-VCH, (2002), 535.
- step b) can be carried out at a temperature between 30 and 200 ° C, preferably between 40 ° C and 170 ° C, preferably between 50 and 150 ° C.
- the HF molar ratio / starting materials can be from 0.5: 1 to 50: 1, preferably from 3: 1 to 20: 1 and preferably from 5: 1 to 15: 1.
- starting materials refers to said at least one of the compounds selected from the group consisting of 2,3-dichloro-1,1,1- trifluoropropane, 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene and 2,3,3,3-tetrachloropropene.
- stream A may be mixed with hydrofluoric acid prior to step b).
- step a) of the present method may comprise the steps of:
- step a4) vaporizing said droplets produced in step a3) by mixing with said gas stream provided in step a1), the resulting mixture being a gaseous mixture.
- step a4) The gaseous mixture thus produced in step a4) is used in step b) of the present process to allow the production of 2-chloro-3,3,3-trifluoropropene.
- the present process can thus comprise the steps of:
- step a4) vaporizing said droplets produced in step a3) by mixing with said gas stream provided in step a1), the resulting mixture being a gaseous mixture;
- step b) in a reactor, contacting said gaseous mixture of step a4) with HF in the presence or absence of a catalyst to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene.
- stream B comprises, in addition to 2-chloro-3,3,3-trifluoropropene, HCl, HF, 2,3,3,3-tetrafluoropropene.
- Stream B may optionally include 2,3-dichloro-3,3-difluoropropene, 2,3,3-trichloro-3-fluoropropene and / or 1,1,1,2,2-pentafluoropropane.
- stream B is purified, preferably by distillation, to form a first stream comprising 2,3,3,3-tetrafluoropropene, HCl and optionally 1,1,1,2,2-pentafluoropropane, and a second stream comprising HF and 2-chloro-3,3,3-trifluoropropene and optionally 2,3-dichloro-3,3-difluoropropene and 2,3,3-trichloro-3-fluoropropene.
- the distillation can be carried out at a pressure of 2 to 6 bara, more particularly at a pressure of 3 to 5 bara.
- the temperature at the top of the distillation column is from -35 ° C. to 10 ° C., preferably from -20 ° C. to 0 ° C.
- said stream B obtained in step b) is cooled prior to the purification mentioned above.
- said stream B obtained in step b) is cooled to a temperature below 100 ° C., and then distilled to form said first stream comprising 2,3,3,3-tetrafluoropropene, HCl and optionally 1,1,1 , 2,2-pentafluoropropane, and said second stream comprising HF and 2-chloro-3,3,3-trifluoropropene and optionally 2,3-dichloro-3,3-difluoropropene and 2,3,3-trichloro-3-fluoropropene ; the temperature at the top of the distillation column is -35 ° C. to 10 ° C. and the distillation is carried out at a pressure of 2 to 6 bara.
- Said stream B can be cooled, before distillation, to a temperature below 95 ° C, preferably below 90 ° C, preferably below 85 ° C, more preferably below 80 ° C, in particular below 70 ° C, more preferably less than 60 ° C, preferably less than 55 ° C, advantageously preferably less than 50 ° C, preferentially preferred less than 40 ° C, more preferably preferred less than 30 ° C, so particularly preferred less than 25 ° C, more preferably less than 20 ° C. Cooling the resulting product stream at such temperatures can facilitate subsequent distillation.
- the cooling of said stream B can be carried out by means of one or a plurality of heat exchangers.
- the cooling of said stream B can be carried out by passing it through one, two, three, four, five, six, seven, eight, nine or ten heat exchangers, preferably the number of heat exchangers is between 2 and 8, in particular between 3 and 7.
- Said second stream comprising HF and 2-chloro-3,3,3-trifluoropropene and optionally 2,3-dichloro-3,3-difluoropropene and 2,3,3-trichloro-3-fluoropropene may be purified, preferably by distillation.
- a third stream comprising hydrofluoric acid and optionally 2,3-dichloro-3,3-difluoropropene and 2,3,3-trichloro-3-fluoropropene
- a fourth stream comprising at least 95% by weight of 2 chloro-3,3,3 trifluoropropene, preferably at least 98% by weight of 2-chloro-3,3,3-trifluoropropene based on the total weight of said fourth stream.
- the third stream comprising hydrofluoric acid and optionally 2,3-dichloro-3,3-difluoropropene and 2,3,3-trichloro-3-fluoropropene can be recycled to step b) or step a1). present process.
- said third stream is mixed with hydrofluoric acid before being used in step b) or step a1) of the present process.
- step b) is carried out in the presence of hydrofluoric acid having an electrical conductivity of less than 10 mS / cm, preferably less than 5 mS / cm.
- the electrical conductivity of hydrofluoric acid can be measured prior to its use in step b) or step a1) of the present process.
- the electrical conductivity of the hydrofluoric acid is measured prior to step b) or step a1) and the hydrofluoric acid is in liquid form during the measurement.
- the method may also comprise a step of heating and vaporizing the hydrofluoric acid prior to the implementation of step b) to provide hydrofluoric acid in gaseous form.
- the hydrofluoric acid is in gaseous form when contacted with said stream A.
- the method may comprise the steps of: a1) supplying a gaseous flow comprising hydrofluoric acid having an electrical conductivity of less than 10 mS / cm;
- step a4) vaporizing said droplets produced in step a3) by mixing with said gas stream provided in step a1), the resulting mixture being a gaseous mixture;
- step b) in a reactor, contacting said gaseous mixture of step a4) with HF in the presence or absence of a catalyst to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene.
- the process according to the present invention is carried out continuously.
- the process according to the present invention is carried out in the gas phase.
- the fluorination of HCC-240db (1,1,1,2,3-pentachloropropane) to HCFO-1233xf (2-chloro-3,3,3-trifluoropropene) is carried out in a multitubular reactor.
- the reactor contains a mass catalyst based on chromium oxide.
- the catalyst is activated by a series of steps including drying, fluorination, air treatment and fluorination with recycling. This multi-step treatment makes the catalytic solid active and selective.
- the fluorination process is carried out according to the following operating conditions: An absolute pressure in the fluorination reactor of 5.5 bar absolute
- a molar ratio between the HF and the sum of the organic elements fed by the recycling loop between 12 and 15
- HCC-240db having two different electrical conductivity values: 6 and 25 mS / cm.
- the run is stopped when the conversion to 1,1,1,2,3-pentachloropropane is less than 50%.
- Table 1 shows the values obtained.
- the electrical conductivity of the HCC-240db current is measured using a cell marketed by Endress + Hauser and referred to as InduMax P CLS 50 coated with a corrosive medium-type perfluoroalkoxy polymer (PFA) coating. containing HF.
- PFA perfluoroalkoxy polymer
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- Chemical & Material Sciences (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1851955A FR3078698B1 (fr) | 2018-03-07 | 2018-03-07 | Procede de production du 2-chloro-3,3,3-trifluoropropene |
| PCT/FR2019/050478 WO2019170990A1 (fr) | 2018-03-07 | 2019-03-04 | Procédé de production du 2-chloro-3,3,3-trifluoropropène |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3762354A1 true EP3762354A1 (fr) | 2021-01-13 |
Family
ID=62597647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19715970.0A Withdrawn EP3762354A1 (fr) | 2018-03-07 | 2019-03-04 | Procédé de production du 2-chloro-3,3,3-trifluoropropène |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11028027B2 (fr) |
| EP (1) | EP3762354A1 (fr) |
| CN (1) | CN111757863A (fr) |
| FR (1) | FR3078698B1 (fr) |
| WO (1) | WO2019170990A1 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3023286B1 (fr) | 2014-07-02 | 2018-02-16 | Arkema France | Procede de fabrication de tetrafluoropropene |
| FR3078700B1 (fr) | 2018-03-07 | 2020-07-10 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
| FR3078699B1 (fr) | 2018-03-07 | 2020-02-21 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
| FR3081158B1 (fr) | 2018-05-16 | 2020-07-31 | Arkema France | Procede de production du 1-chloro-3,3,3-trifluoropropene. |
| FR3083232B1 (fr) | 2018-06-27 | 2021-11-12 | Arkema France | Procede de production du 1-chloro-3,3,3-trifluoropropene |
| FR3086287B1 (fr) | 2018-09-26 | 2020-09-18 | Arkema France | Stabilisation du 1-chloro-3,3,3-trifluoropropene |
| BR112021022059A2 (pt) * | 2018-10-26 | 2021-12-28 | Chemours Co Fc Llc | Composições de fluoropropeno, métodos de produção de uma mistura e de resfriamento, processos para transferência de calor, para tratamento de uma superfície e para formação de uma composição, sistema de refrigeração, aparelhos de refrigeração, uso da composição de fluoropropeno e método para substituição de um refrigerante |
| CN117797839A (zh) * | 2023-12-06 | 2024-04-02 | 西安近代化学研究所 | 一种1,1,1,3-四氯丙烷氯氟化制备2-氯-3,3,3-三氟丙烯用催化剂 |
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| FR3023286B1 (fr) | 2014-07-02 | 2018-02-16 | Arkema France | Procede de fabrication de tetrafluoropropene |
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| FR3078700B1 (fr) | 2018-03-07 | 2020-07-10 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
| FR3078699B1 (fr) | 2018-03-07 | 2020-02-21 | Arkema France | Procede de production du 2,3,3,3-tetrafluoropropene |
-
2018
- 2018-03-07 FR FR1851955A patent/FR3078698B1/fr not_active Expired - Fee Related
-
2019
- 2019-03-04 US US16/976,520 patent/US11028027B2/en not_active Expired - Fee Related
- 2019-03-04 EP EP19715970.0A patent/EP3762354A1/fr not_active Withdrawn
- 2019-03-04 WO PCT/FR2019/050478 patent/WO2019170990A1/fr not_active Ceased
- 2019-03-04 CN CN201980015035.3A patent/CN111757863A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20210002189A1 (en) | 2021-01-07 |
| US11028027B2 (en) | 2021-06-08 |
| WO2019170990A1 (fr) | 2019-09-12 |
| FR3078698B1 (fr) | 2020-02-21 |
| CN111757863A (zh) | 2020-10-09 |
| FR3078698A1 (fr) | 2019-09-13 |
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