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    METHOD FOR PURIFYING 1-CHLORO-3,3,3-TRIFLUOROPROPENE
    1.
    发明申请
    METHOD FOR PURIFYING 1-CHLORO-3,3,3-TRIFLUOROPROPENE 有权

    公开(公告)号：US20220153665A1

    公开(公告)日：2022-05-19

    申请号：US17600179

    申请日：2020-04-01

    Applicant: ARKEMA FRANCE

    Inventor： Emmanuel BOUSSARIE ,  Kevin HISLER ,  Anne PIGAMO ,  Bertrand COLLIER

    IPC: C07C17/395 ,  C07C17/20

    Abstract: The present invention relates to a process for purifying 1-chloro-3,3,3-trifluoropropene comprising the steps of: a) providing a stream comprising 1-chloro-3,3,3-trifluoropropene and at least one compound of formula HX wherein X is F or Cl; b) bringing the stream from step a) into contact with a solution A comprising at least one sulfite salt of formula Yn+mSO3 wherein Y is an alkali or alkaline-earth metal, n=1 or 2, and m=2 when n=1 or m=1 when n=2; in order to form a neutralized stream A1 comprising 1-chloro-3,3,3-trifluoropropene.

    METHOD FOR PURIFYING AND DRYING A HYDROFLUOROOLEFIN STREAM
    2.
    发明申请
    METHOD FOR PURIFYING AND DRYING A HYDROFLUOROOLEFIN STREAM 审中-公开

    公开(公告)号：US20180346396A1

    公开(公告)日：2018-12-06

    申请号：US15761543

    申请日：2016-09-19

    Applicant: Arkema France

    Inventor： Anne PIGAMO ,  Dominique DEUR-BERT ,  Laurent WENDLINGER

    IPC: C07C17/389

    CPC classification number: C07C17/389 ,  C07C21/18

    Abstract: The invention concerns a method for purifying and drying a hydrofluoroolefin stream comprising a hydrofluoroolefin, water and impurities composed of halogenated carbon compounds, characterised in that said stream is brought into contact with an adsorbent and in that the purification and the drying processes are carried out simultaneously in one and the same step, said hydrofluoroolefin being a compound of formula (I): CX1X2═CX3CX4X5X6 in which each Xi (i ranging from 1 to 6) represents, independently of one another, a hydrogen atom or a chlorine or fluorine atom, it being understood that at least one of the Xi's represents a fluorine atom.

    METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE AND FACILITY FOR IMPLEMENTING SAME
    7.
    发明申请
    METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE AND FACILITY FOR IMPLEMENTING SAME 有权

    公开(公告)号：US20210261486A1

    公开(公告)日：2021-08-26

    申请号：US16973192

    申请日：2019-06-06

    Applicant: ARKEMA FRANCE

    Inventor： Bertrand COLLIER ,  Dominique DEUR-BERT ,  Anne PIGAMO ,  Audrey RIEHL ,  Laurent WENDLINGER

    IPC: C07C17/25 ,  C07C17/35 ,  B01J19/02 ,  C07C17/20

    Abstract: The present invention relates to a process for producing 2-chloro-3,3,3-trifluoropropene, comprising the steps: i) providing a stream A comprising at least one chlorinated compound 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; and ii) in an adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing said stream A into contact, in the presence or absence of a catalyst, with HF in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the temperature at the inlet of the fixed bed of said adiabatic reactor is between 300° C. and 400° C. and the longitudinal temperature difference between the inlet of the fixed bed and the outlet of the fixed bed of said reactor is less than 20° C.

    PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE, AND REACTOR FOR CARRYING OUT SAID PROCESS
    8.
    发明申请
    PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE, AND REACTOR FOR CARRYING OUT SAID PROCESS 有权

    公开(公告)号：US20210246091A1

    公开(公告)日：2021-08-12

    申请号：US16973253

    申请日：2019-06-06

    Applicant: ARKEMA FRANCE

    Inventor： Bertrand COLLIER ,  Dominique DEUR-BERT ,  Anne PIGAMO ,  Audrey RIEHL ,  Laurent WENDLINGER

    IPC: C07C21/18 ,  C07C17/20 ,  B01J8/04

    Abstract: A process for producing 2,3,3,3-tetrafluoropropene comprises the steps: i) in a first adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst to produce a stream A comprising 2,3,3,3-tetrafluoropropene, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing hydrofluoric acid into contact in the gas phase, optionally in the presence of a catalyst, with at least one chlorinated compound to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene. The stream A obtained in step i) feeds said second reactor. The inlet temperature of the fixed bed of one of said first or second reactors is between 300° C. and 400° C. The longitudinal temperature difference between the inlet and the outlet of the fixed bed in question is less than 20° C.

    PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE
    9.
    发明申请
    PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE 有权

    公开(公告)号：US20210155567A1

    公开(公告)日：2021-05-27

    申请号：US16625816

    申请日：2018-07-16

    Applicant: Arkema France

    Inventor： Bertrand COLLIER ,  Dominique DEUR-BERT ,  Anne PIGAMO ,  Laurent WENDLINGER

    IPC: C07C17/20 ,  C07C17/25 ,  B01J27/132 ,  B01J23/26

    Abstract: The present invention relates to a process for the gas-phase production of 2,3,3,3-tetrafluoropropene, comprising the steps: i) providing a composition A comprising 2-chloro-3,3,3-trifluoropropene and/or 2,3-dichloro-1,1,1-trifluoropropane and/or 2-chloro-1,1,1,2-tetrafluoropropane or a composition B comprising 1,1,1,2,2-pentafluoropropane and/or 1,1,1,2,3-pentafluoropropane; ii) placing said composition A in contact with hydrofluoric acid in the presence of a catalytic composition comprising a chromium-based catalyst or placing said composition B in contact with a catalytic composition comprising a chromium-based catalyst to produce a composition C comprising 2,3,3,3-tetrafluoropropene, characterized in that step ii) is performed at a temperature of between 310° C. and 450° C. and in that the temperature of step ii) is controlled so as not to exceed 450° C.; and when said catalyst is deactivated, the temperature of step ii) is increased in increments from 0.5° C. to 20° C. on condition that the temperature does not exceed 450° C.

    Process for the production of 2,3,3,3-tetrafluoropropene
    10.
    发明申请
    Process for the production of 2,3,3,3-tetrafluoropropene 有权

    公开(公告)号：US20210002188A1

    公开(公告)日：2021-01-07

    申请号：US16976599

    申请日：2019-03-04

    Applicant: Arkema France

    Inventor： Laurent WENDLINGER ,  Dominique DEUR-BERT ,  Anne PIGAMO

    IPC: C07C17/20 ,  B01J23/26

    Abstract: A process for the production of 2,3,3,3-tetrafluoropropene including the stages: i) in a first reactor, bringing a stream A including 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst in order to produce a stream B including 2,3,3,3-tetrafluoropropene, HCl, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second reactor, bringing hydrofluoric acid into contact, in the gas phase in the presence or not of a catalyst, with a stream including at least one chlorinated compound selected from the group of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, 2,3,3,3-tetrachloropropene and 1,1,2,3-tetrachloropropene, in order to produce a stream C including 2-chloro-3,3,3-trifluoropropene, wherein the stream B obtained in stage i) feeds the second reactor used for stage ii); and wherein the electrical conductivity of the stream A provided in stage i) is less than 15 mS/cm.

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