Title:
PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE
Document Type and Number:
WIPO Patent Application WO/2019/092376
Kind Code:
A3
Abstract:
The invention relates to a process for producing 2,3,3,3-tetrafluoropropene, comprising the following steps: i) in a first reactor, contacting 2-chloro-3,3,3-trifluoropropene with gas-phase hydrofluoric acid in the presence of a catalyst 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, contacting in gas phase, and optionally in the presence of a catalyst, hydrofluoric acid 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 to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene; characterised in that the stream A obtained in step i) supplies the second reactor used for step ii); and in that the pressure at the inlet of the first reactor of step i) is greater than the pressure at the inlet of the second reactor of step ii).
Inventors:
COLLIER BERTRAND (FR)
DEUR-BERT DOMINIQUE (FR)
PIGAMO ANNE (FR)
WENDLINGER LAURENT (FR)
DEUR-BERT DOMINIQUE (FR)
PIGAMO ANNE (FR)
WENDLINGER LAURENT (FR)
Application Number:
PCT/FR2018/052777
Publication Date:
September 06, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
ARKEMA FRANCE (FR)
International Classes:
C07C17/20; C07C17/25; C07C21/18
Foreign References:
| US20150203421A1 | 2015-07-23 | |||
| FR3012137A1 | 2015-04-24 |
Attorney, Agent or Firm:
LECA, François (FR)
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