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    PROCESS FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE
    51.
    发明申请
    PROCESS FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE 有权

    公开(公告)号：US20210002189A1

    公开(公告)日：2021-01-07

    申请号：US16976520

    申请日：2019-03-04

    Applicant: Arkema France

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

    IPC: C07C17/20

    Abstract: The present invention relates to a process for the production of 2-chloro-3,3,3-trifluoropropene comprising the stages of: a) providing a stream A comprising 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; b) in a reactor, bringing said stream A into contact with HF in the presence or absence of a catalyst in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene; characterized in that the electrical conductivity of said stream A provided in stage a) is less than 15 mS/cm.

    PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE
    52.
    发明申请
    PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE 审中-公开

    公开(公告)号：US20200331826A1

    公开(公告)日：2020-10-22

    申请号：US16758097

    申请日：2018-11-08

    Applicant: Arkema France

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

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

    Abstract: The present invention relates to a process for the production of 2,3,3,3-tetrafluoropropene comprising the stages: i) in a first reactor, bringing 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 A comprising 2,3,3,3-tetrafluoropropene, 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 absence of a catalyst, with at least one chlorinated compound selected from the group consisting 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 B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the stream A obtained in stage i) feeds said second reactor used for stage ii); and in that the pressure at the inlet of said first reactor of stage i) is greater than the pressure at the inlet of said second reactor of stage ii).

    METHOD AND PLANT FOR PRODUCING TETRAFLUOROPROPENE
    53.
    发明申请
    METHOD AND PLANT FOR PRODUCING TETRAFLUOROPROPENE 审中-公开

    公开(公告)号：US20200223774A1

    公开(公告)日：2020-07-16

    申请号：US16836977

    申请日：2020-04-01

    Applicant: Arkema France

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

    IPC: C07C17/20 ,  B01J8/04 ,  B01J19/02 ,  B01J38/12 ,  C07C21/18

    Abstract: A plant for the manufacture of tetrafluoropropene comprises three reactors for reaction in the gas phase comprising a catalyst bed. The first and second reactor are each configured in order to be fed in turn by a device for feeding with a reaction stream comprising a compound B and hydrofluoric acid; and a device for feeding with a regeneration stream configured in order to feed the reactor with a regeneration stream comprising an oxidizing agent. The third reactor is configured in order to be fed in turn by a device for feeding with a reaction stream comprising a compound A and hydrofluoric acid; said compound A being different from said compound B; and a device for feeding with a regeneration stream configured in order to feed the reactor with a regeneration stream comprising an oxidizing agent.

    METHOD FOR PRODUCING AND PURIFYING 2,3,3,3-TETRAFLUORO-1-PROPENE
    56.
    发明申请
    METHOD FOR PRODUCING AND PURIFYING 2,3,3,3-TETRAFLUORO-1-PROPENE 审中-公开

    公开(公告)号：US20180370881A1

    公开(公告)日：2018-12-27

    申请号：US16063304

    申请日：2016-12-14

    Applicant: Arkema France

    Inventor： Abdelatif BABA-AHMED ,  Bertrand COLLIER ,  Dominique DEUR-BERT ,  Laurent WENDLINGER

    IPC: C07C17/386 ,  C07C17/25

    Abstract: The present invention concerns a method for producing for producing and purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) from a first composition comprising 2,3,3,3-tetrafluoro-1-propene and chloromethane (40), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extractant in order to form a second composition; (b) extractive distillation of said second composition in order to form (i) a third composition comprising said organic extractant and chloromethane (40); and (ii) a stream comprising 2,3,3,3-tetrafluoro-1-propene (1234yf); (c) recovering and separating said third composition, preferably by distillation, in order to form a stream comprising said organic extractant and a stream comprising chloromethane (40).

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