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24 条记录 (耗时 0.04 秒)

    Method of a simultaneous preparation of hexafluoropropylene and octafluorocyclobutane
    1.
    发明授权
    Method of a simultaneous preparation of hexafluoropropylene and octafluorocyclobutane 失效
    同时制备六氟丙烯和八氟环丁烷的方法

    公开(公告)号：US06710215B2

    公开(公告)日：2004-03-23

    申请号：US10218362

    申请日：2002-08-14

    申请人： Dong Ju Moon ,  Moon Jo Chung ,  Young Soo Kwon ,  Byoung Sung Ahn

    发明人： Dong Ju Moon ,  Moon Jo Chung ,  Young Soo Kwon ,  Byoung Sung Ahn

    IPC分类号： C07C1700

    CPC分类号： C07C23/06 ,  C07C17/269 ,  C07C17/281 ,  C07C21/185

    摘要： A method of simultaneous and selective prepararation of hexafluoropropylene and octafluorocyclebutane comprising the steps of: (a) thermally decomposing difluorochloromethane to obtain tetrafluoroethylene and then supplying the resulting tetrafluoroethylene into a fluidized bed reactor equipped with a distributor for supplying steam; and (b) supplying steam into a flow of tetrafluoroethylene supplied into the fluidized bed reactor, through a distributor for supplying steam at a certain molar ratio of tetrafluoroethylene/stream, and then performing dimerization of tetrafluoroethylene in the fluidized bed reactor under an atmospheric pressure.

    摘要翻译： 一种同时和选择性制备六氟丙烯和八氟环丁烷的方法，包括以下步骤：（a）热分解二氟氯甲烷以获得四氟乙烯，然后将所得的四氟乙烯供给到装有用于供应蒸汽的分配器的流化床反应器中; 和（b）通过用于以一定摩尔比的四氟乙烯/料流供给蒸汽的分配器供应蒸汽供入到流化床反应器中的四氟乙烯流中，然后在大气压下在流化床反应器中进行四氟乙烯的二聚。

    Preparation of hexafluoropropylene from the pyrolysis of trifluoromethane and tetrafluoroethylene
    2.
    发明授权
    Preparation of hexafluoropropylene from the pyrolysis of trifluoromethane and tetrafluoroethylene 失效
    从三氟甲烷和四氟乙烯的热解制备六氟丙烯

    公开(公告)号：US06403848B1

    公开(公告)日：2002-06-11

    申请号：US09820631

    申请日：2001-03-30

    申请人： Dong Ju Moon ,  Hong Gon Kim ,  Byoung Sung Ahn ,  Moon Jo Chung ,  Young Soo Kwon

    发明人： Dong Ju Moon ,  Hong Gon Kim ,  Byoung Sung Ahn ,  Moon Jo Chung ,  Young Soo Kwon

    IPC分类号： C07C1702

    CPC分类号： C07C17/269 ,  C07C21/18

    摘要： 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.

    摘要翻译： 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。

    Catalyst characterization apparatus
    4.
    发明授权
    Catalyst characterization apparatus 有权
    催化剂表征装置

    公开(公告)号：US06306349B1

    公开(公告)日：2001-10-23

    申请号：US09449467

    申请日：1999-11-29

    申请人： Dong Ju Moon ,  Kun You Park ,  Moon Jo Chung ,  Byoung Sung Ahn

    发明人： Dong Ju Moon ,  Kun You Park ,  Moon Jo Chung ,  Byoung Sung Ahn

    IPC分类号： G01N3110

    CPC分类号： G01N15/0893 ,  G01N31/10 ,  G01N2015/0833

    摘要： 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.

    摘要翻译： 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。

    Process for manufacturing 1,1,1,2-tetrafluoroethane
    6.
    发明授权
    Process for manufacturing 1,1,1,2-tetrafluoroethane 失效
    制备1,1,1,2-四氟乙烷的方法

    公开(公告)号：US5841007A

    公开(公告)日：1998-11-24

    申请号：US630678

    申请日：1996-04-12

    申请人： Byoung Sung Ahn ,  Young Soo Kwon ,  Kun You Park ,  Moon Jo Chung

    发明人： Byoung Sung Ahn ,  Young Soo Kwon ,  Kun You Park ,  Moon Jo Chung

    IPC分类号： C07C17/20 ,  C07C17/21 ,  C07C19/08 ,  C07C17/00

    CPC分类号： C07C19/08 ,  C07C17/206 ,  C07C17/21

    摘要： 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.

    摘要翻译： 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。