Process for separating solid 1,5- and/or 1,8-dinitroanthraquinone and
liquid nitrobenzene
    3.
    发明授权
    Process for separating solid 1,5- and/or 1,8-dinitroanthraquinone and liquid nitrobenzene 失效
    分离固体1,5-和/或1,8-二硝基蒽醌和液体硝基苯的方法

    公开(公告)号:US4389344A

    公开(公告)日:1983-06-21

    申请号:US99115

    申请日:1979-11-29

    CPC classification number: C07C201/16 C07C2103/24

    Abstract: A process and an equipment for obtaining dry 1,5- and/or 1,8-dinitroanthraquinone from suspensions which contain liquid nitrobenzene whereby in a first stage solid 1,5- and/or 1,8-dinitroanthraquinone with a content of less than 30% by weight of nitrobenzene is separated off mechanically from the suspension at elevated temperature and whereby in a second stage the residued nitrobenzene is removed from the separated 1,5- and/or 1,8-dinitroanthraquinone by lowering the pressure during which the temperature falls.

    Abstract translation: 一种用于从含有液体硝基苯的悬浮液中获得干燥的1,5-和/或1,8-二硝基蒽醌的方法和设备,其中在第一阶段中固体含量小于1的固体1,5-和/或1,8-二硝基蒽醌 在升高的温度下将30重量%的硝基苯与悬浮液机械分离,由此在第二阶段中,通过降低其中温度的压力从分离的1,5-和/或1,8-二硝基蒽醌中除去残留的硝基苯 下降。

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