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    • 1. 发明授权
    • Preparation of hexafluoropropylene from the pyrolysis of trifluoromethane and tetrafluoroethylene
    • 从三氟甲烷和四氟乙烯的热解制备六氟丙烯
    • US06403848B1
    • 2002-06-11
    • US09820631
    • 2001-03-30
    • Dong Ju MoonHong Gon KimByoung Sung AhnMoon Jo ChungYoung Soo Kwon
    • Dong Ju MoonHong Gon KimByoung Sung AhnMoon Jo ChungYoung Soo Kwon
    • C07C1702
    • C07C17/269C07C21/18
    • The present invention relates to a process for preparing hexafluoropropylene(CF3CF═CF2, HFP) from the pyrolysis of trifluoromethane(CHF3, R23) and tetrafluoroethylene(C2F4, TFE) and more particularly, to the process for preparing hexafluoropropylene from the pyrolysis of an admixture of R23 and TFE mixed in an appropriate molar ratio at below 900 which is lower than the conventional reaction temperature and longer residence time, after investigating the pyrolysis reaction of R23 and TFE by the computer simulation. The process for preparing HFP is performed by carefully controlling reaction temperature with heat balance resulted from an endothermic pyrolysis of R23 and an exothermic dimerization of TFE to prevent from carbon formation, recycling unreacted R23 and TFE in the product separated and purified from distillation column, adding fresh R23 additionally to keep an appropriate molar ratio of R23 and TFE, to improve a total yield of HFP and to minimize heat supply from outside.
    • 本发明涉及从三氟甲烷(CHF 3,R 23)和四氟乙烯(C 2 F 4,TFE)的热解制备六氟丙烯(CF 3 CF = CF 2,HFP)的方法,更具体地说,涉及从混合物的热解制备六氟丙烯的方法 通过计算机模拟研究R23和TFE的热解反应后,R23和TFE以适合的摩尔比混合在900以下,低于常规反应温度和较长的停留时间。 制备HFP的过程是通过仔细控制反应温度和由R23的吸热热解产生的热平衡和TFE的放热二聚反应来防止形成碳,循环未反应的R23和TFE,从蒸馏塔中分离和纯化,加入 新鲜的R23另外保持适当的R23和TFE的摩尔比,以提高HFP的总产率并最小化从外部的供热。
    • 4. 发明授权
    • Catalyst characterization apparatus
    • 催化剂表征装置
    • US06306349B1
    • 2001-10-23
    • US09449467
    • 1999-11-29
    • Dong Ju MoonKun You ParkMoon Jo ChungByoung Sung Ahn
    • Dong Ju MoonKun You ParkMoon Jo ChungByoung Sung Ahn
    • G01N3110
    • G01N15/0893G01N31/10G01N2015/0833
    • The present invention relates to a catalyst characterization apparatus, and in particular to an improved catalyst characterization apparatus which is capable of characterizing the surface of a catalyst more accurately by a volumetric method without requiring a pre-treatment step which may vary the characteristics of the catalyst as well as without exposing the catalyst in air, by combining a dynamic flow type reactor with a volumetric type adsorption apparatus, whereby it is possible to accurately characterize the catalyst during an actual reaction. It is possible to accurately characterize the various catalysts and to characterize the catalyst during the reaction, alternately and/or continuously, by combining a dynamic flow type reactor with a volumetric type characterization apparatus as well as a dynamic flow type characterization apparatus.
    • 本发明涉及一种催化剂表征装置,特别涉及一种改进的催化剂表征装置,其能够通过体积法更准确地表征催化剂的表面,而不需要可改变催化剂特性的预处理步骤 以及通过将动态流动型反应器与体积型吸附装置组合而不使空气中的催化剂暴露,由此可以在实际反应期间精确地表征催化剂。 可以通过组合动态流动型反应器与体积型表征装置以及动态流动型表征装置来交替地和/或连续地精确地表征各种催化剂并且在反应期间表征催化剂。
    • 6. 发明授权
    • Process for manufacturing 1,1,1,2-tetrafluoroethane
    • 制备1,1,1,2-四氟乙烷的方法
    • US5841007A
    • 1998-11-24
    • US630678
    • 1996-04-12
    • Byoung Sung AhnYoung Soo KwonKun You ParkMoon Jo Chung
    • Byoung Sung AhnYoung Soo KwonKun You ParkMoon Jo Chung
    • C07C17/20C07C17/21C07C19/08C07C17/00
    • C07C19/08C07C17/206C07C17/21
    • The present invention relates to a process for manufacturing 1,1,1,2-tetrafluoroethane (HFC-134a) from trichloroethylene (TCE) and hydrogen fluoride (HF) by reacting the HCFC-133a with the HF to produce the HFC-134a and reacting the TCE with the HF to produce 1-choro-2,2,2-trifluoroethane (HCFC-133a), characterized by that a part of said HF is mixed with the mixture containing the HFC-134a and the remaining portion of said HF is fed with said TCE in portions to at least two sections of a reactor for producing said HCFC-133a. According the present process, the temperature change in the reactor for producing HCFC-133a is maintained within a narrow range over the whole reaction procedures, and the catalytic activity is well maintained. Further, the formation of by-products is considerably prevented and thus the productivity is remarkably enhanced.
    • 本发明涉及通过使HCFC-133a与HF反应生成HFC-134a,从三氯乙烯(TCE)和氟化氢(HF)制备1,1,1,2-四氟乙烷(HFC-134a) 使TCE与HF反应以产生1-氯-2,2,2-三氟乙烷(HCFC-133a),其特征在于,将所述HF的一部分与含有HFC-134a和所述HF的剩余部分的混合物混合 与所述TCE一起供给至用于生产所述HCFC-133a的反应器的至少两个部分。 根据本方法,生产HCFC-133a的反应器中的温度变化在整个反应过程中保持在窄范围内,并且催化活性得到很好的维持。 此外,可以显着地防止副产物的形成,从而显着提高生产率。
    • 9. 发明授权
    • Process for co-producing 1,1,1,2-tetrafluoroethane pentafluoroethane and
1,1,1-trifluoroethane
    • 共1,1,1,2-四氟乙烷五氟乙烷和1,1,1-三氟乙烷共生产方法
    • US5659094A
    • 1997-08-19
    • US591705
    • 1996-01-25
    • Hoon Sik KimByung Gwon LeeHonggon KimMoon Jo Chung
    • Hoon Sik KimByung Gwon LeeHonggon KimMoon Jo Chung
    • B01J23/26B01J27/12B01J27/132B01J27/138C07B61/00C07C17/20C07C17/21C07C17/23C07C19/08
    • C07C17/21B01J27/132B01J27/138C07C17/206C07C17/23
    • A process for co-production of 1,1,1,2-tetrafluoroethane (HFC-134a;CF.sub.3 CH.sub.2 F), pentafluoroethane (HFC-125; CF.sub.3 CHF.sub.2) and 1,1,1 -trifluoroethane (HFC-143a; CF.sub.3 CH.sub.3) by a two-step gaseous reaction comprising the steps of a) reacting 1,1,1-trifluoro-2-chloroethane (CFCH.sub.2 Cl, HCFC-133a) with HF in a first reactor to prepare 1,1,1,2-tetrafluoroethane (HFC-134a; CF.sub.3 CH.sub.2 F), pentafluoroethane (HFC-125; CF.sub.3 CHF.sub.2) and 1,1,1-trifluoroethane (HFC-143a; CF.sub.3 CH.sub.3); b) adding trichloroethylene (TCE:CCl.sub.2 CHCl) to the reaction product of step a) in a second reactor to prepare HCFC-133a; separating HCl, HFC-134a, HFC-125 and HFC-143a from the reaction product of step b) and recycling HCFC-133a to the first reactor, and the stages being performed in the presence of fluorization catalyst obtained by calcining a reaction product which is obtained by reacting ethanol with a mixture of calcium fluoride(CaF.sub.2) with an aqueous solution of chromium trioxide, zinc chloride and ferrous chloride is provided.
    • 一种通过两个共同生产1,1,1,2-四氟乙烷(HFC-134a; CF3CH2F),五氟乙烷(HFC-125; CF3CHF2)和1,1,1-三氟乙烷(HFC-143a; CF3CH3)的方法 包括以下步骤:a)在第一反应器中使1,1,1-三氟-2-氯乙烷(CFCH2Cl,HCFC-133a)与HF反应制备1,1,1,2-四氟乙烷(HFC-134a ; CF 3 CH 2 F),五氟乙烷(HFC-125; CF 3 CHF 2)和1,1,1-三氟乙烷(HFC-143a; CF 3 CH 3); b)在第二反应器中将三氯乙烯(TCE:CCl 2 CHCl)加入到步骤a)的反应产物中以制备HCFC-133a; 从步骤b)的反应产物中分离出HCl,HFC-134a,HFC-125和HFC-143a,并将HCFC-133a再循环到第一反应器中,这些阶段在通过煅烧反应产物得到的氟化催化剂存在下进行, 通过乙醇与氟化钙(CaF 2)与三氧化铬的水溶液,氯化锌和氯化亚铁的混合物反应获得。