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1. (WO2018178554) METHOD FOR THE PRODUCTION AND PURIFICATION OF 2,3,3,3-TETRAFLUOROPROPENE
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Pub. No.: WO/2018/178554 International Application No.: PCT/FR2018/050734
Publication Date: 04.10.2018 International Filing Date: 27.03.2018
IPC:
C07C 17/20 (2006.01) ,C07C 17/23 (2006.01) ,C07C 17/38 (2006.01) ,C07C 17/383 (2006.01) ,C07C 17/386 (2006.01) ,C07C 21/18 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
17
Preparation of halogenated hydrocarbons
093
by replacement by halogens
20
of halogen atoms by other halogen atoms
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
17
Preparation of halogenated hydrocarbons
23
by dehalogenation
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
17
Preparation of halogenated hydrocarbons
38
Separation; Purification; Stabilisation; Use of additives
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
17
Preparation of halogenated hydrocarbons
38
Separation; Purification; Stabilisation; Use of additives
383
by distillation
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
17
Preparation of halogenated hydrocarbons
38
Separation; Purification; Stabilisation; Use of additives
383
by distillation
386
with auxiliary compounds
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
21
Acyclic unsaturated compounds containing halogen atoms
02
containing carbon-to-carbon double bonds
18
containing fluorine
Applicants: ARKEMA FRANCE[FR/FR]; 420 rue d'Estienne d'Orves 92700 Colombes, FR
Inventors: DEUR-BERT, Dominique; FR
WENDLINGER, Laurent; FR
Agent: LECA, François; FR
Priority Data:
175258128.03.2017FR
Title (EN) METHOD FOR THE PRODUCTION AND PURIFICATION OF 2,3,3,3-TETRAFLUOROPROPENE
(FR) PROCEDE DE PRODUCTION ET DE PURIFICATION DU 2,3,3,3-TETRAFLUOROPROPENE.
Abstract:
(EN) The invention relates to a method for the production of 2,3,3,3-tetrafluoropropene using a starting composition, comprising the steps of: bringing the starting composition into contact with HF, in the presence of a catalyst, in order to produce a composition A comprising 2,3,3,3-tetrafluoropropene (1234yf), intermediate products B consisting of 2-chloro-3,3,3- trifluoropropene (1233xf), 1,1,1,2,2-pentafluoropropane (245cb), and secondary products C consisting of E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (1234zeE) and 1,1,1,3,3-pentafluoropropane (245fa); recovering composition A and purifying same in order to form and recover a first gas stream G1 comprising HCl, 2,3,3,3-tetrafluoropropene (1234yf), some of the unreacted HF, some of the intermediate products B and some of the secondary products C, and a preferably liquid stream L1 comprising some of the unreacted HF, some of the intermediate products B and some of the secondary products C.
(FR) L'invention se réfère à un procédé de production du 2,3,3,3-tétrafluoropropène mis en œuvre à partir d'une composition de départ comprenant les étapes de mise en contact, en présence d'un catalyseur, de la composition de départ avec HF pour produire une composition A comprenant 2,3,3,3-tétrafluoropropène (1234yf), des produits intermédiaires B consistant en 2-chloro-3,3,3- trifluoropropène (1233xf), 1,1,1,2,2-pentafluoropropane (245cb), et des produits secondaires C consistant en E-l-chloro-3,3,3-trifluoro-l-propène (1233zdE), trans-l,3,3,3-tetrafluoro-l- propène (1234zeE) et 1,1,1,3,3-pentafluoropropane (245fa); récupération de ladite composition A et purification de celle-ci pour former et récupérer un premier courant gazeux Gl comprenant HCI, 2,3,3,3-tétrafluoropropène (1234yf), une partie du HF n'ayant pas réagi, une partie des produits intermédiaires B et une partie des produits secondaires C; et un courant, de préférence liquide, Ll comprenant une partie du HF n'ayant pas réagi, une partie des produits intermédiaires B et une partie des produits secondaires C.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)