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    Production process of chlorine
    4.
    发明授权
    Production process of chlorine 失效
    氯的生产过程

    公开(公告)号：US4803065A

    公开(公告)日：1989-02-07

    申请号：US64699

    申请日：1987-06-22

    申请人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Masanobu Ajioka ,  Shinji Takenaka ,  Masafumi Kataita

    发明人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Masanobu Ajioka ,  Shinji Takenaka ,  Masafumi Kataita

    IPC分类号： B01J8/24 ,  B01J23/26 ,  B01J38/30 ,  C01B7/04

    CPC分类号： B01J23/26 ,  C01B7/04 ,  Y02P20/228

    摘要： An improved process is provided for the production of chlorine. In a fluidized-bed reactor having a specific equivalent diameter and made of a material with a particular iron content, hydrogen chloride and oxygen are reacted in particular gas volumes and at specific molar ratio, superficial velocity, temperature and pressure in the presence of a catalyst composed principally of a chromium oxide and having a specific particle size distribution. The catalyst is filled in a specific amount in terms of catalyst layer height at rest. The catalyst can retain its high activity.

    摘要翻译： 提供了一种用于生产氯的改进方法。 在具有特定当量直径并由具有特定铁含量的材料制成的流化床反应器中，氯化氢和氧气在特定的气体体积下以特定的摩尔比在表面速度，温度和压力下在催化剂存在下反应 主要由氧化铬组成并具有特定的粒度分布。 以催化剂层的静置高度，催化剂以特定的量填充。 催化剂可以保持其高活性。

    Production process of chlorine
    7.
    发明授权
    Production process of chlorine 失效
    氯的生产过程

    公开(公告)号：US4774070A

    公开(公告)日：1988-09-27

    申请号：US13426

    申请日：1987-02-11

    申请人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Masanobu Ajioka ,  Shinji Takenaka ,  Masafumi Kataita

    发明人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Masanobu Ajioka ,  Shinji Takenaka ,  Masafumi Kataita

    IPC分类号： C01B7/04 ,  C01B7/07

    CPC分类号： C01B7/04 ,  C01B7/0743

    摘要： Chlorine is produced by oxidizing byproduced hydrogen chloride. An offgas containing hydrogen chloride as a byproduct is reacted with oxygen at 300.degree.-500.degree. C. in the presence of a catalyst which contains chromic oxide (Cr.sub.2 O.sub.3) as a principal component. The resulting gas is cooled rapidly and then washed with water to recover vaporized chromium. The hydrogen chloride is then absorbed in water to recover it as an aqueous hydrochloric acid solution. The still remaining portion of the resultant gas is washed with sulfuric acid to remove water from the same, followed by compression and cooling. The resulting liquefied chlorine is separated. The still remaining gas composed principally of oxygen is thereafter returned to the oxidation step.

    摘要翻译： 通过氧化副产生的氯化氢产生氯。 在含有氧化铬（Cr 2 O 3）作为主要成分的催化剂的存在下，将含有氯化氢作为副产物的废气在300-500℃下与氧气反应。 将所得气体快速冷却，然后用水洗涤以回收蒸发的铬。 然后将氯化氢吸收在水中，以盐酸水溶液的形式回收。 所得气体的剩余部分用硫酸洗涤以从其中除去水，然后压缩和冷却。 所得到的液化氯被分离。 然后主要由氧气组成的剩余气体返回氧化步骤。

    Industrial process for the separation and recovery of chlorine
    9.
    发明授权
    Industrial process for the separation and recovery of chlorine 失效
    用于分离和回收氯的工业过程

    公开(公告)号：US5254323A

    公开(公告)日：1993-10-19

    申请号：US921606

    申请日：1992-08-03

    申请人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Isao Kikuchi ,  Shinji Takenaka ,  Masanobu Ajioka ,  Mitsuo Kudoh

    发明人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Isao Kikuchi ,  Shinji Takenaka ,  Masanobu Ajioka ,  Mitsuo Kudoh

    IPC分类号： C01B7/07 ,  C01B7/01 ,  B01D53/34

    CPC分类号： C01B7/0743

    摘要： A gaseous mixture containing chlorine, carbon dioxide and non-condensable gas is compressed and cooled to separate it into a residual gas formed principally of a major portion of the non-condensable gas and a condensate formed primarily of chlorine. The condensate is fed to a stripping column to desorb carbon dioxide and a minor portion of the non-condensable gas dissolved in the condensate. The stripped gas formed primarily of chlorine and carbon dioxide may be treated further. Namely, the stripped gas is mixed with the residual gas. At least a portion of the mixed gas is fed into an absorption column, whereby a major portion of remaining chlorine is absorbed to lower the chlorine content Removal of chlorine from such a gaseous mixture or an off-gas from the above process can be achieved by washing it with an aqueous solution or suspension containing an alkali metal sulfite and/or an alkaline earth metal sulfite while controlling the pH of the solution or suspension within a range of 1.9-6.3.

    摘要翻译： 将含有氯，二氧化碳和不可冷凝气体的气体混合物压缩并冷却，将其分离成主要由不可冷凝气体主要形成的残留气体和主要由氯气形成的冷凝物。 将冷凝物供入汽提塔以解吸二氧化碳和少部分溶解在冷凝物中的不可冷凝气体。 主要由氯和二氧化碳形成的汽提气体可以进一步处理。 即，将汽提的气体与残留气体混合。 将混合气体的至少一部分进料到吸收塔中，从而吸收主要部分的剩余氯以降低氯含量从上述方法从这种气体混合物或废气中除去氯可以通过 用包含碱金属亚硫酸盐和/或碱土金属亚硫酸盐的水溶液或悬浮液洗涤，同时将溶液或悬浮液的pH控制在1.9-6.3的范围内。

    Industrial process for the separation and recovery of chlorine
    10.
    发明授权
    Industrial process for the separation and recovery of chlorine 失效
    用于分离和回收氯的工业过程

    公开(公告)号：US5000006A

    公开(公告)日：1991-03-19

    申请号：US310929

    申请日：1989-02-16

    申请人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Isao Kikuchi ,  Shinji Takenaka ,  Masanobu Ajioka ,  Mitsuo Kudoh

    发明人： Hiroyuki Itoh ,  Yoshitsugu Kono ,  Isao Kikuchi ,  Shinji Takenaka ,  Masanobu Ajioka ,  Mitsuo Kudoh

    IPC分类号： C01B7/01 ,  B01D53/68 ,  C01B7/07

    CPC分类号： B01D53/68 ,  C01B7/0743 ,  Y10S62/921

    摘要： A gaseous mixture containing chlorine, carbon dioxide and non-condensable gas is compressed and cooled to separate it into a residual gas formed principally of a major portion of the non-condensable gas and a condensate formed primarily of chlorine. The condensate is fed to a stripping column to desorb carbon dioxide and a minor portion of the non-condensable gas dissolved in the condensate. The stripped gas formed primarily of chlorine and carbon dioxide may be treated further. Namely, the stripped gas is mixed with the residual gas. At least a portion of the mixed gas is fed into an absorption column, whereby a major portion of remaining chlorine is absorbed to lower the chlorine content. Removal of chlorine from such a gaseous mixture or an off-gas from the above process can be achieved by washing it with an aqueous solution or suspension containing an alkali metal sulfite and/or an alkaline earth metal sulfite while controlling the pH of the solution or suspension within a range of 1.9-6.3.