公开(公告)号：US20240246892A1

公开(公告)日：2024-07-25

申请号：US18564245

申请日：2022-06-03

Applicant: ARKEMA FRANCE

Inventor： Abdelatif BABA-AHMED ,  Alexandre CAMBRODON ,  Dominique GARRAIT ,  Thierry LANNUZEL ,  Cédric LAVY ,  Laurent WENDLINGER ,  Kevin HISLER

IPC: C07C21/18

CPC classification number: C07C21/18

Abstract: The present invention relates to an azeotropic or quasi-azeotropic composition comprising chlorotrifluoroethylene and at least one of the compounds selected from the group consisting of 1,1,2-trifluoroethane, 1,1-difluoroethane and a mixture of the two. The present invention also relates to an azeotropic or quasi-azeotropic composition comprising 1,1,2-trifluoroethane and at least one of the compounds selected from the group consisting of 2-chloro-1,1,1-trifluoroethane, 1-chloro-1,1,2-trifluoroethane and a mixture of the two.

公开(公告)号：US20230391694A1

公开(公告)日：2023-12-07

申请号：US18250993

申请日：2021-10-27

Applicant: ARKEMA FRANCE

Inventor： Alexandre CAMBRODON ,  Thierry LANNUZEL ,  Cédric LAVY ,  Philippe LEDUC ,  Kevin HISLER

IPC: C07C17/23 ,  B01J37/18 ,  B01J37/08 ,  B01J23/44

CPC classification number: C07C17/23 ,  B01J23/44 ,  B01J37/08 ,  B01J37/18

Abstract: A process for the production of trifluoroethylene in a reactor provided with a catalytic bed including a catalyst, the process including: i) a step of activating the catalyst, including bringing it into contact with a gaseous stream including a reducing agent, an inert gas or a mixture thereof; and ii) a step of reacting chlorotrifluoroethylene with hydrogen in the presence of the catalyst activated in step i) and in the gas phase in order to produce a stream including trifluoroethylene; wherein during said step i), the temperature of the catalytic bed is increased from a temperature T1 to a temperature T2 that is greater than T1, with a temperature gradient of less than 0.5° C./min.

公开(公告)号：US20240246891A1

公开(公告)日：2024-07-25

申请号：US18564332

申请日：2022-06-03

Applicant: ARKEMA FRANCE

Inventor： Alexandre CAMBRODON ,  Cédric LAVY ,  Thierry LANNUZEL ,  Philippe LEDUC ,  Kevin HISLER

IPC: C07C17/25 ,  B01D3/36 ,  B01J21/04 ,  B01J23/44 ,  C07C17/386

CPC classification number: C07C17/25 ,  B01D3/36 ,  B01J21/04 ,  B01J23/44 ,  C07C17/386

Abstract: The present invention relates to a process for producing trifluoroethylene in a reactor provided with a fixed catalytic bed comprising a catalyst, said process comprising the steps of: a) reacting chlorotrifluoroethylene with hydrogen in the presence of the catalyst and in the gas phase to produce a stream A comprising trifluoroethylene; b) treating said stream A under conditions sufficient to produce a stream D1 comprising 1,1,2-trifluoroethane in a content of less than 15% by weight on the basis of the total weight of said stream D1, c) recycling stream D1 to step a).

公开(公告)号：US20240400479A1

公开(公告)日：2024-12-05

申请号：US18689101

申请日：2022-09-22

Applicant: Arkema France

Inventor： Alexandre CAMBRODON ,  Thierry LANNUZEL ,  Cédric LAVY ,  Kevin HISLER

IPC: C07C17/23 ,  C07C17/383

Abstract: A method for producing trifluoroethylene in a reactor with a fixed catalytic bed comprising a catalyst, comprises the steps of: a) reacting chlorotrifluoroethylene with hydrogen in the presence of the catalyst and in the gas phase, to produce a flow of product comprising trifluoroethylene; b) treating the flow of product obtained in step a) in order to recover a stream A comprising trifluoroethylene, chlorotrifluoroethylene and an additional compound selected from the group consisting of 1,1-difluoroethylene, 1,1,1,2-tetrafluoroethane, 1,1,1-trifluoroethane and ethane; wherein the total content by weight of the additional compound is less than 0.5%; c) distilling stream A to recover a stream B comprising at least 99% by weight of trifluoroethylene and less than 0.2% by weight of one or more additional compounds. A composition comprising at least 99% by weight of trifluoroethylene and from 0.1 to 1000 ppm of ethane, and/or from 0.1 to 1000 ppm of 1,1,1,2-tetrafluoroethane, based on the total weight of the composition is disclosed.

公开(公告)号：US20230391693A1

公开(公告)日：2023-12-07

申请号：US18250620

申请日：2021-10-27

Applicant: ARKEMA FRANCE

Inventor： Alexandre CAMBRODON ,  Thierry LANNUZEL ,  Cédric LAVY ,  Philippe LEDUC ,  Kevin HISLER

IPC: C07C17/23 ,  B01J23/44

CPC classification number: C07C17/23 ,  B01J23/44

Abstract: The present invention relates to a process for the production of trifluoroethylene in a reactor equipped with a fixed catalytic bed comprising a catalyst, said process comprising a stage a) of reaction of chlorotrifluoroethylene with hydrogen in the presence of the catalyst and in the gas phase in order to produce a stream comprising trifluoroethylene; said stage a) being carried out at a temperature of the fixed catalytic bed T1 of between 50° C. and 250° C.; said process being characterized in that, during stage a), the temperature of the fixed catalytic bed T1 is increased provided that it does not exceed 300° C.