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1. WO2020201340 - METHOD FOR PURIFYING 1-CHLORO-3,3,3-TRIFLUOROPROPENE

Publication Number WO/2020/201340
Publication Date 08.10.2020
International Application No. PCT/EP2020/059231
International Filing Date 01.04.2020
IPC
C07C 17/20 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
093by replacement by halogens
20of halogen atoms by other halogen atoms
C07C 17/395 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
38Separation; Purification; Stabilisation; Use of additives
395by treatment giving rise to a chemical modification of at least one compound
C07C 21/18 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
21Acyclic unsaturated compounds containing halogen atoms
02containing carbon-to-carbon double bonds
18containing fluorine
CPC
C07C 17/206
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
093by replacement by halogens
20of halogen atoms by other halogen atoms
202two or more compounds being involved in the reaction
206the other compound being HX
C07C 17/395
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
17Preparation of halogenated hydrocarbons
38Separation; Purification; Stabilisation; Use of additives
395by treatment giving rise to a chemical modification of at least one compound
Applicants
  • ARKEMA FRANCE [FR]/[FR]
Inventors
  • BOUSSARIE, Emmanuel
  • HISLER, Kevin
  • PIGAMO, Anne
  • COLLIER, Bertrand
Agents
  • LECA, François
Priority Data
FR190353603.04.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR PURIFYING 1-CHLORO-3,3,3-TRIFLUOROPROPENE
(FR) PROCÉDÉ DE PURIFICATION DU 1-CHLORO-3,3,3-TRIFLUOROPROPÈNE
Abstract
(EN)
The present invention relates to a method 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) placing the stream of step a) in contact with a solution A comprising at least one sulphite 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 neutralised stream A1 comprising 1-chloro-3,3,3-trifluoropropene.
(FR)
La présente invention se rapporte à un procédé de purification du 1-chloro-3,3,3- trifluoropropène comprenant les étapes de : a) fourniture d'un courant comprenant 1-chloro- 3,3,3-trifluoropropène et au moins un composé de formule HX dans laquelle X est F ou Cl; b) mise en contact du courant de l'étape a) avec une solution A comprenant au moins un sel de sulfite de formule Yn+mSO3 dans laquelle Y est un métal alcalin ou alcalino-terreux, n = 1 ou 2, et m = 2 lorsque n = 1 ou m = 1 lorsque n = 2; pour former un courant neutralisé A1 comprenant 1-chloro-3,3,3-trifluoropropène.
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