Global Patent Index - EP 3807238 A1

EP 3807238 A1 20210421 - PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE, AND SYSTEM FOR CARRYING OUT SAME

Title (en)

PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE, AND SYSTEM FOR CARRYING OUT SAME

Title (de)

VERFAHREN ZUR HERSTELLUNG VON 2,3,3,3-TETRAFLUORPROPEN UND SYSTEM ZUR DURCHFÜHRUNG DAVON

Title (fr)

PROCÉDÉ DE PRODUCTION DE 2,3,3,3-TÉTRAFLUOROPROPÈNE ET INSTALLATION POUR LA MISE EN OUVRE DE CELUI-CI

Publication

EP 3807238 A1 20210421 (FR)

Application

EP 19742846 A 20190606

Priority

  • FR 1855108 A 20180612
  • FR 2019051356 W 20190606

Abstract (en)

[origin: WO2019239040A1] The invention relates to a process for producing 2,3,3,3-tetrafluoropropene, comprising the steps of: i) in a first adiabatic reactor having a fixed bed composed of an inlet and an outlet, in the gas phase and in the presence or absence of a catalyst, bringing hydrofluoric acid into contact with at least one chlorine-containing compound selected from among 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 A comprising 2-chloro-3,3,3-trifluoropropene; ii) in a second adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing stream A obtained in step i) into contact with hydrofluoric acid in the gas phase in the presence of a catalyst to produce a stream B comprising 2,3,3,3-tetrafluoropropene; characterized in that the temperature at the inlet of the fixed bed of one of said first or second reactors is between 300°C and 400°C and the difference in longitudinal temperature between the inlet of the fixed bed and the outlet of the fixed bed of the reactor in question is less than 20°C

IPC 8 full level

C07C 17/20 (2006.01); C07C 17/25 (2006.01); C07C 21/18 (2006.01)

CPC (source: EP US)

B01J 19/00 (2013.01 - US); B01J 19/0013 (2013.01 - US); B01J 19/24 (2013.01 - US); B01J 19/2415 (2013.01 - US); B01J 19/242 (2013.01 - US); C07C 17/206 (2013.01 - EP US); C07C 17/25 (2013.01 - EP); C07C 17/269 (2013.01 - US); C07C 21/04 (2013.01 - US); C07C 21/18 (2013.01 - US); B01J 2219/00054 (2013.01 - US); B01J 2219/00063 (2013.01 - US); B01J 2219/00155 (2013.01 - US)

C-Set (source: EP)

  1. C07C 17/206 + C07C 21/18
  2. C07C 17/25 + C07C 21/18

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

FR 3082202 A1 20191213; FR 3082202 B1 20200828; CN 112243434 A 20210119; EP 3807238 A1 20210421; US 2021253501 A1 20210819; WO 2019239040 A1 20191219

DOCDB simple family (application)

FR 1855108 A 20180612; CN 201980039202 A 20190606; EP 19742846 A 20190606; FR 2019051356 W 20190606; US 201916973518 A 20190606