Publication number: 20200131104
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 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 stage i) is carried out at a temperature which is lower than or equal to the temperature at which stage ii) is carried out.
Type:
Application
Filed:
July 16, 2018
Publication date:
April 30, 2020
Inventors:
Bertrand COLLIER, Dominique DEUR-BERT, Anne PIGAMO, Laurent WENDLINGER
Publication number: 20190375698
Abstract: Compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane). A process for manufacturing the composition, the process including the following steps: reaction of carbon tetrachloride with ethylene to produce 1,1,1,3-tetrachloropropane (F-250fb); chlorination of F-250fb to obtain 1,1,1,3,3-pentachloropropane (F-240fa); dehydrochlorination of F-240fa to obtain 1,1,3,3-tetrachloropropene (F-1230za); one or more steps for separating out the F-1230za.
Type:
Application
Filed:
August 20, 2019
Publication date:
December 12, 2019
Applicant:
ARKEMA FRANCE
Inventors:
Anne PIGAMO, Bertrand COLLIER