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    Production of 1,2-dichloroethane
    1.
    发明授权
    Production of 1,2-dichloroethane 失效
    生产1,2-二氯乙烷

    公开(公告)号：US4310713A

    公开(公告)日：1982-01-12

    申请号：US898711

    申请日：1978-04-24

    申请人： Gunter Legutke ,  Gerhard H. Rechmeier ,  Harald Scholz ,  Kurt Schuchardt ,  Ernst Holler ,  Gunther Liesenfelder

    发明人： Gunter Legutke ,  Gerhard H. Rechmeier ,  Harald Scholz ,  Kurt Schuchardt ,  Ernst Holler ,  Gunther Liesenfelder

    IPC分类号： B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00

    CPC分类号： C07C17/156 ,  Y02P20/582

    摘要： 1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5.degree. to 18.degree. C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.

    摘要翻译： 1,2-二氯乙烷是通过使乙烯与氯化氢和含有分子氧的气体在气相中在升高的温度下进行氧氯化反应并与载体上的流化床铜-Cl-氯化物催化剂接触而制备的，其中反应 气体在两个冷凝阶段被压力冷却，冷凝的1,2-二氯乙烷和水被除去，大部分未反应的起始气体和惰性气体被再循环。 更具体地，将反应气体输送到第三冷凝段，并在压力下冷却至5℃至18℃的温度，并且在循环气体含有0.5至3体积％的1， 2-二氯乙烷。 接下来，将循环气体直接混合在反应器的上游，与一定量的纯氧代替消耗的氧气并在其中重新建立12至25体积％的氧含量。