公开(公告)号：US11299446B2

公开(公告)日：2022-04-12

申请号：US17121894

申请日：2020-12-15

Applicant: Arkema France

Inventor： Abdelatif Baba-Ahmed ,  Bertrand Collier ,  Dominique Deur-Bert ,  Laurent Wendlinger

IPC: C07C21/18 ,  C07C19/08 ,  C07C19/10 ,  C07C19/03 ,  C07C17/386 ,  C07C17/383 ,  C07C17/38 ,  C09K5/04

Abstract: The invention relates to a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distilaation of said second composition in order to form (i) a third composition comprising said organic extraction agent, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and (ii) a stream comprising the 2,3,3,3-tetrafluoro-1-propene; and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising 3,3,3-trifluoropropene (1243zf) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E).

公开(公告)号：US11192839B2

公开(公告)日：2021-12-07

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.

公开(公告)号：US11136282B2

公开(公告)日：2021-10-05

申请号：US16973462

申请日：2019-06-06

Applicant: ARKEMA FRANCE

Inventor： Bertrand Collier ,  Dominique Deur-Bert ,  Anne Pigamo ,  Audrey Riehl ,  Laurent Wendlinger

IPC: C07C17/20 ,  B01J19/24 ,  C07C21/04 ,  C07C21/18 ,  B01J19/00 ,  C07C17/269

Abstract: The present invention relates to a process for producing 2,3,3,3-tetrafluoropropene, comprising the steps: i) providing a stream A comprising at least one starting compound selected from the group consisting of 2-chloro-3,3,3-trifluoropropene and 2,3-dichloro-1,1,1-trifluoropropane; 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 2,3,3,3-tetrafluoropropene, 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.

公开(公告)号：US11034635B2

公开(公告)日：2021-06-15

申请号：US16976819

申请日：2019-03-04

Applicant: Arkema France

Inventor： Laurent Wendlinger ,  Dominique Deur-Bert ,  Anne Pigamo

IPC: C07C17/20 ,  C07C17/25 ,  C07C21/18

Abstract: The present invention relates to a process for producing 2,3,3,3-tetrafluoropropene, comprising the steps of: a) providing a stream A comprising at least one of the compounds selected from the group consisting of 2-chloro-3,3,3-trifluoropropene and 2,3-dichloro-1,1,1-trifluoropropane; b) in a reactor, bringing said stream A into contact with HF in the presence or absence of a fluorination catalyst in order to produce a stream B comprising 2,3,3,3-tetrafluoropropene; characterized in that the electrical conductivity of said stream A provided in step a) is less than 15 mS/cm.

公开(公告)号：US10577294B2

公开(公告)日：2020-03-03

申请号：US16060037

申请日：2016-12-07

Applicant: Arkema France

Inventor： David Andre ,  Dominique Deur-Bert ,  Dominique Garrait ,  Anne Pigamo ,  Laurent Wendlinger

IPC: C07C17/20 ,  B01J38/46 ,  B01J23/92 ,  B01J37/14 ,  B01J37/18 ,  B01J38/10 ,  B01J38/12 ,  B01J27/32 ,  B01J37/12 ,  B01J37/16 ,  B01J27/132 ,  C07C17/21 ,  B01J23/26 ,  B01J37/26 ,  B01J38/42 ,  B01J38/04 ,  B01J37/24 ,  C07C17/087 ,  C07C19/08

Abstract: The present invention relates to a method for fluorinating a chlorinated compound including the steps of (a) placing said chlorinated compound in contact with gaseous hydrogen fluoride within a reactor and in the presence of a fluorination catalyst to produce a fluorinated compound, and (b) regenerating the fluorination catalyst used in step a), the step of regenerating the fluorination catalyst including (c) treating said fluorination catalyst with an oxidizing agent to form an oxidized fluorination catalyst, and (d) treating the oxidized fluorination catalyst obtained in step (c) with a gas mixture including a reducing agent.

公开(公告)号：US10435341B2

公开(公告)日：2019-10-08

申请号：US16063301

申请日：2016-12-14

Applicant: Arkema France

Inventor： Abdelatif Baba-Ahmed ,  Bertrand Collier ,  Dominique Deur-Bert ,  Irène Emery ,  Laurent Wendlinger

IPC: C07C17/386 ,  C07C21/18 ,  C07C19/08 ,  C07C17/25 ,  C09K5/04

Abstract: The invention relates to a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 1,1,1,2,2-pentafluoropropane (245cb) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distillation of said second composition in order to form a third composition comprising said organic extraction agent and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and a stream comprising the 2,3,3,3-tetrafluoro-1-propene and the 1,1,1,2,2-pentafluoropropane (245cb); and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising the trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E). The invention also relates to a method for producing 2,3,3,3-tetrafluoro-1-propene.

公开(公告)号：US20190152883A1

公开(公告)日：2019-05-23

申请号：US16250141

申请日：2019-01-17

Applicant: Arkema France

Inventor： Anne PIGAMO ,  Laurent Wendlinger ,  Dominique Duer-Bert

IPC: C07C17/20 ,  C07C21/18 ,  B01J12/00

Abstract: A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. Also, equipment suitable for carrying out this process.

公开(公告)号：US10239805B2

公开(公告)日：2019-03-26

申请号：US15764127

申请日：2016-09-28

Applicant: Arkema France

Inventor： Bertrand Collier ,  Pierre-Marie Sedat ,  Laurent Wendlinger

IPC: C07C17/42 ,  C07C17/25

Abstract: The present invention relates to a composition comprising trifluoroethylene and 1,2,3,3,3-pentafluoropropene characterized that the weight ratio trifluoroethylene/1,2,3,3,3-pentafluoropropene is from 5/95 to 95/5.

公开(公告)号：US10227275B2

公开(公告)日：2019-03-12

申请号：US15321462

申请日：2015-06-22

Applicant: Arkema France

Inventor： Anne Pigamo ,  Laurent Wendlinger ,  Dominique Deur-Bert

IPC: C07C17/20 ,  C07C21/18 ,  B01J12/00

Abstract: A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. Also, equipment suitable for carrying out this process.

公开(公告)号：US10207971B2

公开(公告)日：2019-02-19

申请号：US15518605

申请日：2015-10-07

Applicant: Arkema France

Inventor： Dominique Deur-Bert ,  Laurent Wendlinger ,  Bertrand Collier

IPC: C07C19/01 ,  C07C17/20 ,  C07C17/25

Abstract: The invention relates to a composition comprising at least 99% by weight of 1,1,1,2,3-pentachloropropane, and comprising at least one compound chosen from a list of additional compounds consisting of trichloropropanes, tetrachloropropanes, pentachloropropanes other than 1,1,1,2,3-pentachloropropane, hexachloropropanes, heptachloropropanes, dichloropropenes, trichloropropenes, tetrachloropropenes, pentachloropropenes and hexachloropropene, said compound being present in the composition in a weight content of less than or equal to 500 ppm.The invention also relates to the use of this composition for manufacturing 2,3,3,3-tetrafluoropropene.