Method for producing fluorinated compounds

Patent metadata

Field	Value
Publication number	US-10532966-B2
Application number	US-201815861873-A
Country	US
Kind code	B2
Filing date	Jan 4, 2018
Priority date	Oct 17, 2013
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A method for producing a fluorinated compound comprises: the provision of a gaseous flow comprising hydrofluoric acid; the provision of at least one liquid flow of a chlorinated compound and the vapourisation thereof by mixing with the gaseous flow, the resulting mixture being a gaseous mixture; and the catalytic reaction of the chlorinated compound with hydrofluoric acid in a gaseous phase and the collection of a product flow. The invention also relates to a facility for carrying out the method.

First claim

The invention claimed is:

1. An installation for producing a fluoro compound, comprising:
a pipe for supplying a liquid stream of chloro compound;
a pipe for supplying a gas stream comprising hydrofluoric acid;
a mixing and vaporizing unit fed by the pipe for supplying the liquid stream of chloro compound and the pipe for supplying the gas stream comprising hydrofluoric acid;
a pipe for collecting a gas mixture at the outlet of the mixing and vaporizing unit;
a catalytic fluorination reactor fed by the pipe for collecting the gas mixture, wherein the installation comprises a mixing and vaporizing unit interposed between the pipe for supplying the liquid stream of chloro compound and the pipe for supplying the gas stream comprising hydrofluoric acid and the catalytic fluorination reactor; and
a pipe for collecting the product stream at the outlet of the catalytic fluorination reactor.

2. The installation as claimed in claim 1 , wherein:
the chloro compound comprises a chlorocarbon, a chlorohydrocarbon, a chlorofluorocarbon, a hydrochlorofluorocarbon, a chloroolefin, a hydrochloroolefin or a hydrochlorofluoroolefin; and wherein the fluoro compound comprises a fluorocarbon, a fluorohydrocarbon, a chlorofluorocarbon, a hydrochlorofluorocarbon, a fluoroolefin, a hydrofluoroolefin or a hydrochlorofluoroolefin.

3. The installation as claimed in claim 1 , wherein the mixing and vaporizing unit) is a static mixer.

4. The installation as claimed in claim 1 , comprising:
at least one separating unit fed by the product stream collection pipe; and
a fluoro compound collection pipe and a recycling stream collection pipe at the outlet of the separating unit(s).

5. The installation as claimed in claim 4 , wherein the recycling stream collection pipe and optionally a hydrofluoric acid supply pipe feed the pipe for supplying the gas stream comprising hydrofluoric acid.

6. The installation as claimed in claim 4 , comprising a catalytic fluorination reactor at least partly fed by the recycling stream collection pipe with a supply of hydrofluoric acid, the pipe for supplying the gas stream comprising hydrofluoric acid being derived from the catalytic fluorination reactor.

7. The installation as claimed in claim 1 , comprising heating means on the pipe for supplying the liquid stream of chloro compound.

8. The installation as claimed in claim 1 , comprising heating means or cooling means on the gas mixture collection pipe.

Assignees

• Arkema France

Inventors

• Bonnet Philippe
• Collier Bertrand
• Deur-Bert Dominique
• Garrait Dominique
• Pigamo Anne
• Wendlinger Laurent

Classifications

• C07C17/206 Primary

  the other compound being HX · CPC title

• C07C17/25

  by splitting-off hydrogen halides from halogenated hydrocarbons · CPC title

• C07C17/21

  with simultaneous increase of the number of halogen atoms · CPC title

• B01J7/00

  Apparatus for generating gases (production of inert gas mixtures B01J19/14; for generating specific gases, see the relevant subclasses, e.g. C01B, C10J {; in "air bags" on vehicles B60R21/26; for starter gas F02C7/26; blasting cartridges for producing gas under pressure F42B3/04}) · CPC title

• C07C21/18

  containing fluorine · CPC title