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    Method for producing perfluorocarbon
    2.
    发明授权
    Method for producing perfluorocarbon 失效
    生产全氟化碳的方法

    公开(公告)号：US5892134A

    公开(公告)日：1999-04-06

    申请号：US1917

    申请日：1997-12-31

    申请人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Toshio Ohi ,  Tatsuharu Arai

    发明人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Toshio Ohi ,  Tatsuharu Arai

    IPC分类号： C07C17/10 ,  C07C17/20 ,  C07C17/38 ,  C07C19/08

    CPC分类号： C07C17/38 ,  C07C17/208

    摘要： A production method of perfluorocarbon comprising a main reaction step of making a hydrofluorocarbon and fluorine gas of raw materials react in vapor phase with each other to obtain a reaction product gas containing a perfluorocarbon and residual fluorine gas, and a fluorine gas removing step of making the reaction product gas effluent from the main reaction step contact a hydrofluorocarbon having a chemical equivalent not less than 1.1 mol times a chemical equivalent of the fluorine gas contained in the reaction product gas, thereby removing the fluorine gas.

    摘要翻译： 一种全氟化碳的制造方法，其特征在于，包括使氢氟烃和原料的氟气气相反应的主反应工序，得到含有全氟化碳和残余氟气的反应产物气体，以及氟气除去工序， 来自主反应步骤的反应产物气体流出物与化学当量不小于反应产物气体中所含的氟气的化学当量为1.1摩尔倍数的氢氟烃接触，从而除去氟气。

    Process for producing perfluorocarbon
    3.
    发明授权
    Process for producing perfluorocarbon 失效
    生产全氟化碳的方法

    公开(公告)号：US5675046A

    公开(公告)日：1997-10-07

    申请号：US630350

    申请日：1996-04-10

    申请人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Tatsuharu Arai ,  Toshio Ohi

    发明人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Tatsuharu Arai ,  Toshio Ohi

    IPC分类号： C07C17/10

    CPC分类号： C07C17/10

    摘要： A process for producing perfluorocarbons which comprises a step of contacting a hydrofluorocarbon with fluorine gas in a vapor phase at an elevated reaction temperature in a first reaction zone to obtain a gaseous reaction mixture; and a step of introducing the gaseous reaction mixture as a diluent gas into a second reaction zone and contacting the same therein at an elevated reaction temperature with a hydrofluorocarbon fed to the second reaction zone if necessary together with fluorine gas, the hydrofluorocarbon fed to the second reaction zone being different from the hydrofluorocarbon reacted in the first reaction zone.

    摘要翻译： 一种制备全氟化碳的方法，其包括在第一反应区中在升高的反应温度下在气相中使氢氟烃与氟气接触以获得气态反应混合物的步骤; 以及将气态反应混合物作为稀释气体引入第二反应区并在升高的反应温度下与进入第二反应区的氢氟烃一起与氟气接触的步骤，如果需要，与氟气一起供入第二反应区 反应区不同于在第一反应区中反应的氢氟烃。

    Method for purifying hexafluoroethane
    4.
    发明授权
    Method for purifying hexafluoroethane 有权
    六氟乙烷净化方法

    公开(公告)号：US06274782B1

    公开(公告)日：2001-08-14

    申请号：US09523966

    申请日：2000-03-13

    申请人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Toshio Ohi ,  Tatsuharu Arai

    发明人： Hiromoto Ohno ,  Tetsuo Nakajo ,  Toshio Ohi ,  Tatsuharu Arai

    IPC分类号： C07C1738

    CPC分类号： C07C17/10 ,  C07C17/389 ,  C07C19/08

    摘要： A purification method for purifying hexafluoroethane, comprising a step of making hexafluoroethane containing impurities of hydrofluorocarbons including two carbon atoms in a molecule contact a zeolite having a mean micropore size in a range of 3.5 Å to 11 Å and a silicon/aluminum ratio of not more than 1.5 or an adsorbent comprising the above-described zeolite and a carbonaceous adsorbent having a mean micropore size in a range of 3.5 Å to 11 Å, thereby reducing said hydrofluorocarbons.

    摘要翻译： 一种净化六氟乙烷的净化方法，其特征在于，包括在分子中含有包含2个碳原子的氢氟烷杂质的六氟乙烷与平均微孔尺寸在3.5〜11的范围内接触的硅石/铝比不大的工序 1.5以上的吸附剂或包含上述沸石的吸附剂和平均微孔尺寸在3埃至11埃范围内的碳质吸附剂，从而还原所述氢氟烃。

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

    公开(公告)号：US5276223A

    公开(公告)日：1994-01-04

    申请号：US56765

    申请日：1993-05-04

    申请人： Hiromoto Ohno ,  Tatsuharu Arai ,  Kazuo Muramaki ,  Toshio Ohi ,  Hidetoshi Nakayama ,  Yoshitaka Shohji

    发明人： Hiromoto Ohno ,  Tatsuharu Arai ,  Kazuo Muramaki ,  Toshio Ohi ,  Hidetoshi Nakayama ,  Yoshitaka Shohji

    IPC分类号： C07C17/20 ,  C07C17/21 ,  C07C17/38 ,  C07C17/383 ,  C07C19/08

    CPC分类号： C07C19/08 ,  C07C17/206 ,  C07C17/21 ,  C07C17/38 ,  C07C17/383

    摘要： A process for producing 1,1,1,2-tetrafluoroethane through a reaction of trichloroethylene with HF, which comprises the steps of:(a) allowing trichloroethylene to react with HF in a first reactor to form 1,1,1-trifluoro-2-chloroethane,(b) allowing 1,1,1-trifluoro-2-chloroethane to react with HF in a second reactor to form 1,1,1,2-tetrafluoroethane,(c) introducing the products of the above steps (a) and (b) into a first distillation column where the products are separated into a distillate containing 1,1,1,2-tetrafluoroethane and HCl as main components, a side-cut fraction containing 1,1,1-trifluoro-2-chloroethane and HF as main components and a bottom liquid containing HF as a main component and a small amount of trichloroethylene, and(d) introducing the distillate of the above step (c) into a second distillation column where HCl is recovered as a distillate and a 1,1,1,2-tetrafluoroethane fraction containing small amounts of 1,1,1-trifluoro-2-chloroethane and HF is discharged from the bottom of the second distillation column and introduced into a separately arranged purification step to recover 1,1,1,2-tetrafluoroethane, while the side-cut fraction discharged from the first distillation column is supplemented with HF to adjust the mixing ratio of HF and 1,1,1-trifluoro-2-chloroethane contained therein and recycled into the second reactor and the bottom liquid discharged from the first distillation column is supplemented with trichloroethylene and HF to adjust their mixing ratio and amounts and recycled into the first reactor. The process renders possible simplification of equipments and improvement of energy efficiency in production of 1,1,1,2-tetrafluoroethane.

    摘要翻译： 一种通过三氯乙烯与HF的反应生产1,1,1,2-四氟乙烷的方法，其包括以下步骤：（a）使三氯乙烯与HF在第一反应器中反应形成1,1,1-三氟 - （b）在第二反应器中使1,1,1-三氟-2-氯乙烷与HF反应形成1,1,1,2-四氟乙烷，（c）引入上述步骤的产物（ a）和（b）进入第一蒸馏塔，其中将产物分离成含有1,1,1,2-四氟乙烷和HCl作为主要成分的馏出物，含有1,1,1-三氟-2 - 氯乙烷和HF作为主要成分，以及以HF为主要成分的底液和少量的三氯乙烯，（d）将上述步骤（c）的馏出物引入第二蒸馏塔，其中HCl作为馏出物回收 并且从中排出含有少量1,1,1-三氟-2-氯乙烷和HF的1,1,1,2-四氟乙烷馏分 第二蒸馏塔的底部并引入单独设置的纯化步骤以回收1,1,1,2-四氟乙烷，而从第一蒸馏塔排出的侧馏分添加HF以调节HF的混合比 和其中包含的1,1,1-三氟-2-氯乙烷并循环到第二反应器中，并且从第一蒸馏塔排出的底部液体补充三氯乙烯和HF以调节其混合比和量并再循环到第一反应器中。 该工艺可以简化设备，提高1,1,1,2-四氟乙烷生产能源效率。

    Process for producing hexafluoroethane and use thereof
    8.
    发明授权
    Process for producing hexafluoroethane and use thereof 有权
    六氟乙烷的制造方法及其用途

    公开(公告)号：US07468466B2

    公开(公告)日：2008-12-23

    申请号：US10567757

    申请日：2004-08-09

    申请人： Hiromoto Ohno ,  Tatsuharu Arai

    发明人： Hiromoto Ohno ,  Tatsuharu Arai

    IPC分类号： C07C17/00 ,  C07C17/28

    CPC分类号： C07C19/08 ,  B01J23/26 ,  B01J37/0009 ,  C07C17/10 ,  C07C17/206 ,  C07C17/21 ,  C07C17/383 ,  C07C17/395 ,  C07C19/12

    摘要： A process for producing hexafluoroethane, comprising a step of distilling a crude hexafluoroethane containing chlorine compounds each having two carbon atoms to distill out hexafluoroethane as a top flow from the top of a distillation column and separate a hexafluoroethane mixture containing the chlorine compounds as a bottom flow from the bottom, and a step of contacting the bottom flow with hydrogen fluoride in the gas phase at a temperature of 300 to 500° C. in the presence of a fluorination catalyst to fluorinate the chlorine compounds. This process provides hexafluoroethane which can be used mainly as a cleaning gas in the production process of a semiconductor device.

    摘要翻译： 一种生产六氟乙烷的方法，包括蒸馏含有两个碳原子的氯化合物的粗六氟乙烷从蒸馏塔的顶部馏出六氟乙烷作为顶部流动的步骤，并将含有氯化合物的六氟乙烷混合物作为底部流 并且在氟化催化剂的存在下，在300〜500℃的温度下，在气相中将底部流与氟化氢接触以使氯化合物氟化的步骤。 该方法提供了在半导体器件的生产过程中主要用作清洁气体的六氟乙烷。

    Process for producing hexafluoroethane and use thereof
    9.
    发明申请
    Process for producing hexafluoroethane and use thereof 有权
    六氟乙烷的制造方法及其用途

    公开(公告)号：US20060252970A1

    公开(公告)日：2006-11-09

    申请号：US10567757

    申请日：2004-08-09

    申请人： Hiromoto Ohno ,  Tatsuharu Arai

    发明人： Hiromoto Ohno ,  Tatsuharu Arai

    IPC分类号： C07C17/38

    CPC分类号： C07C19/08 ,  B01J23/26 ,  B01J37/0009 ,  C07C17/10 ,  C07C17/206 ,  C07C17/21 ,  C07C17/383 ,  C07C17/395 ,  C07C19/12

    摘要： A process for producing hexafluoroethane, comprising a step of distilling a crude hexafluoroethane containing chlorine compounds each having two carbon atoms to distill out hexafluoroethane as a top flow from the top of a distillation column and separate a hexafluoroethane mixture containing the chlorine compounds as a bottom flow from the bottom, and a step of contacting the bottom flow with hydrogen fluoride in the gas phase at a temperature of 300 to 500° C. in the presence of a fluorination catalyst to fluorinate the chlorine compounds. This process provides hexafluoroethane which can be used mainly as a cleaning gas in the production process of a semiconductor device.

    摘要翻译： 一种生产六氟乙烷的方法，包括蒸馏含有两个碳原子的氯化合物的粗六氟乙烷从蒸馏塔的顶部馏出六氟乙烷作为顶部流动的步骤，并将含有氯化合物的六氟乙烷混合物作为底部流 并且在氟化催化剂的存在下，在300〜500℃的温度下，在气相中将底部流与氟化氢接触以使氯化合物氟化的步骤。 该方法提供了在半导体器件的生产过程中主要用作清洁气体的六氟乙烷。

    Process for purifying 1,1,1,2-tetrafluoroethane
    10.
    发明授权
    Process for purifying 1,1,1,2-tetrafluoroethane 失效
    净化1,1,1,2-四氟乙烷的方法

    公开(公告)号：US5382724A

    公开(公告)日：1995-01-17

    申请号：US216780

    申请日：1994-03-23

    申请人： Hiromoto Ohno ,  Tatsuharu Arai ,  Koichi Katamura ,  Sadayoshi Yuge ,  Haruyuki Kawai ,  Yasuaki Morito

    发明人： Hiromoto Ohno ,  Tatsuharu Arai ,  Koichi Katamura ,  Sadayoshi Yuge ,  Haruyuki Kawai ,  Yasuaki Morito

    IPC分类号： C07C19/08 ,  C01B7/19 ,  C07C17/38

    CPC分类号： C01B7/196 ,  C07C17/38 ,  C07C17/389 ,  Y02P20/582

    摘要： A process for purifying 1,1,1,2-tetrafluoroethane which comprises allowing an HF-containing 1,1,1,2-tetrafluoroethane-concentrated fraction to contact at a low temperature with hydrofluoric acid which is an extraction solvent and has an HF concentration equal to or higher than an HF concentration at a water-HF azeotropic point, thereby effecting two-phase separation, and subsequently recovering 1,1,1,2-tetrafluoroethane from the separated lower phase, wherein hydrofluoric acid to be used as the extraction solvent has a concentration of from 38 to 70% by weight, and the extraction and two-phase separation steps are effected at a temperature of from -35.degree. to 35.degree. C. According to the purification process, HF can be recovered economically from a 1,1,1,2-tetrafluoroethane fraction containing a small amount of HF.

    摘要翻译： 一种净化1,1,1,2-四氟乙烷的方法，其包括使含HF的1,1,1,2-四氟乙烷浓缩的级分与氢氟酸（其是提取溶剂）在低温下接触并具有HF 浓度等于或高于水-HF共沸点处的HF浓度，从而进行两相分离，随后从分离的下相回收1,1,1,2-四氟乙烷，其中使用氢氟酸作为 提取溶剂的浓度为38〜70重量％，提取和两相分离步骤在-35〜35℃的温度下进行。根据纯化方法，可以经济回收HF 含有少量HF的1,1,1,2-四氟乙烷馏分。