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    • 28. 发明授权
    • Process for separating hydrogen fluoride from organic feedstocks
    • 从有机原料中分离氟化氢的方法
    • US08519201B2
    • 2013-08-27
    • US13423726
    • 2012-03-19
    • Daniel C. MerkelKonstantin A. PokrovskiHsueh S. Tung
    • Daniel C. MerkelKonstantin A. PokrovskiHsueh S. Tung
    • C07C17/38C07C17/00
    • C07C17/383C07C17/087C07C17/25C07C19/10C07C21/18
    • Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride; (b) cooling said first distillate stream to produce an intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride; and, optionally but preferably, (c) distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a second bottoms stream comprising a purified organic feedstock substantially free of hydrogen fluoride.
    • 提供了一种纯化有机原料的方法,其包括(a)蒸馏包含氟化氢,2-氯-1,1,1,2-四氟丙烷和2-氯-3,3,3-三氟丙烯的原始有机原料以产生 包含2-氯-1,1,1,2-四氟丙烷,2-氯-3,3,3-三氟丙烯和氟化氢的类共沸组合物的第一蒸馏物流和富含氟化氢的第一塔底物流 ; (b)冷却所述第一馏出物流以产生包含富含2-氯-1,1,1,2-四氟丙烷和2-氯-3,3,3-三氟丙烯的有机层和富含酸层的中间组合物 在氟化氢中; 和(c)蒸馏所述有机层以产生包含2-氯-1,1,1,2-四氟丙烷的共沸混合物组合物,2-氯-3,3,3-四氯丙烷的第二馏出物流, 三氟丙烯和氟化氢,以及包含基本上不含氟化氢的纯化有机原料的第二塔底物流。
    • 30. 发明授权
    • Method for producing fluorinated organic compounds
    • 氟化有机化合物的制备方法
    • US08071825B2
    • 2011-12-06
    • US12185042
    • 2008-08-01
    • Robert C. JohnsonHsueh S. TungDaniel C. Merkel
    • Robert C. JohnsonHsueh S. TungDaniel C. Merkel
    • C07C17/00
    • C07C17/25C07C17/04C07C17/087C07C17/204C07C17/206C07C17/21C07C17/23C07C21/18C07C19/01C07C19/10C07C19/08C07C21/073
    • Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). In certain preferred embodiments the processes comprise first exposing a compound of Formula (IA) C(X)2═CClC(X)3  (IA) where each X is independently F, Cl or H, preferably CCl2═CClCH2Cl, to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce at least one chlorofluoropropane, preferably in accordance with Formula (IB): CF3CClX′C(X′)3  Formula (IB) where each X′ is independently F, Cl or H, and then exposing the compound of Formula (IB) to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce a compound of Formula (II) CF3CF═CHZ  (II) where Z is H, F, Cl, I or Br.
    • 公开了用于生产氟化烯烃的方法,优选适于CF 3CF≡CH2(1234yf)的商业化。 在某些优选实施方案中,方法包括首先将式(IA)C(X)2 = CClC(X)3(IA)的化合物暴露于其中每个X独立地为F,Cl或H,优选CCl 2 = CClCH 2 Cl, 反应条件,但优选基本上单一组反应条件,有效产生至少一种氯氟丙烷,优选按照式(IB):CF 3 CClX'C(X')3式(IB)其中每个X'独立地为 F,Cl或H,然后将式(IB)化合物暴露于一组或多组反应条件,但优选基本上单组的反应条件,有效产生式(II)化合物CF 3 CF = CHZ(II )其中Z是H,F,Cl,I或Br。