Process for regenerating catalyst for producing a-caprolactam and process for producing e-caprolactam
    5.
    发明公开
    Process for regenerating catalyst for producing a-caprolactam and process for producing e-caprolactam 审中-公开
    一种回收生产ε-己内酰胺及其生产ε-己内酰胺的催化剂的方法

    公开(公告)号:EP1875964A1

    公开(公告)日:2008-01-09

    申请号:EP07111516.6

    申请日:2007-07-02

    Abstract: The present invention provides a process for regenerating a catalyst for producing e-caprolactam comprising the steps of adsorbing a silicon compound on a zeolite catalyst that had been used for a Beckmann rearrangement reaction of cyclohexanone oxime and contacting the catalyst with an aqueous solution containing a compound selected from a quaternary ammonium compound, lower alkylamines and ammonia. The present invention also provides a process for producing e-caprolactam comprising subjecting cyclohexanone oxime to the Beckmann rearrangement reaction in the presence of the catalyst thus regenerated.

    Abstract translation: 本发明提供了一种用于与wässrige溶液含有化合物再生为生产ε-己内酰胺,包括吸附在沸石催化剂的硅化合物步骤的催化剂也已被用于环己酮肟的贝克曼重排反应和接触催化剂 从季铵化合物,低级烷基胺和氨中。 因此,本发明提供了用于生产ε-己内酰胺包括使环己酮肟在这样再生的催化剂的存在下进行贝克曼重排反应的方法。

    Method for producing epsilon-Carpolactam and method for reactivating catalyst for producing epsilon-Carpolactam
    7.
    发明公开
    Method for producing epsilon-Carpolactam and method for reactivating catalyst for producing epsilon-Carpolactam 有权
    一种用于ε-己内酰胺和方法的制备方法中用于重新激活的催化剂用于生产ε-己内酰胺的

    公开(公告)号:EP1593433A1

    公开(公告)日:2005-11-09

    申请号:EP05002577.4

    申请日:2005-02-08

    Abstract: A method for producing ε-caprolactam and a method for reactivating a zeolite catalyst for producing ε-caprolactam are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia and amines. In accordance with the present invention, the catalytic activities of a zeolite catalyst used for the Beckmann rearrangement reaction of cyclohexanone oxime can be effectively restored. Consequently, ε-caprolactam may be produced with a high production yield for a long period of time by reusing the catalyst by the method described above.

    Abstract translation: 提供一种用于生产ε-己内酰胺和用于重新激活的制造ε-己内酰胺的沸石催化剂的方法方法。 在活化步骤中,沸石催化剂允许接触含有羧酸,水和由氨和cardamines中选择的化合物的气体。 在本发明雅舞蹈,用于环己酮肟的贝克曼重排反应的沸石催化剂的催化活性可以得到有效恢复。 因此,可以以高生产成品率用于通过重新使用通过上述方法所述的催化剂的很长一段时间来产生ε-己内酰胺。

    Molybdenum recovery
    10.
    发明公开
    Molybdenum recovery 失效
    RückgewinnungvonMolybdän。

    公开(公告)号:EP0515116A2

    公开(公告)日:1992-11-25

    申请号:EP92304463.0

    申请日:1992-05-18

    Abstract: An epoxidation reaction product formed by the molybdenum catalyzed reaction of propylene with tertiary butyl hydroperoxide to provide propylene oxide and tertiary butyl alcohol is separated by distillation into a propylene fraction, a propylene oxide fraction, a tertiary butyl alcohol fraction and a heavy liquid distillation fraction composed primarily of tertiary butyl hydroperoxide, tertiary butyl alcohol, dissolved molybdenum catalyst, and impurities including lower aliphatic C₁-C₄ carboxylic acids, and the heavy liquid distillation fraction is saturated with ammonia to precipitate the molybdenum therefrom for recovery.

    Abstract translation: 通过丙烯与叔丁基过氧化氢的钼催化反应形成环氧丙烷和叔丁醇形成的环氧化反应产物通过蒸馏分离成丙烯馏分,环氧丙烷馏分,叔丁醇馏分和重液体蒸馏馏分 主要是叔丁基过氧化氢,叔丁醇,溶解的钼催化剂和包括低级脂肪族C 1 -C 4羧酸的杂质,重质液体蒸馏馏分用氨饱和,使钼从中回收。

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