Process for removing pure aromatics
    22.
    发明授权
    Process for removing pure aromatics 失效
    去除纯粹的芳香物质的方法

    公开(公告)号:US5059306A

    公开(公告)日:1991-10-22

    申请号:US541555

    申请日:1990-06-21

    CPC分类号: C07C7/14875

    摘要: In the removal of pure aromatics from aromatic-containing hydrocarbon mixtures by liquid-phase extraction or extractive distillation using a selective solvent, the specific cost of separation can be reduced at the same yield of aromatics or the yield of aromatics can be increased at the same specific cost of separation if the liquid-phase extraction or the extractive distillation is carried out in the presence of a reactive solid. At the same time, substantially aromatic-free raffinates are obtained.

    摘要翻译: 在通过使用选择性溶剂的液相萃取或萃取蒸馏从含芳烃的烃混合物中除去纯芳烃时,可以以相同的芳族化合物产率降低分离的具体成本,或者相同的芳族化合物的产率可以提高 如果在反应性固体的存在下进行液相萃取或萃取蒸馏,则具体的分离成本。 同时,获得基本上无芳香族的残余物。

    Process for recovering gallium
    24.
    发明授权
    Process for recovering gallium 失效
    回收镓的方法

    公开(公告)号:US4943420A

    公开(公告)日:1990-07-24

    申请号:US337585

    申请日:1989-04-13

    IPC分类号: C22B58/00 C01G15/00

    摘要: In the process for recovering gallium from aqueous, alkaline solutions by adsorption of the gallium on to bead-polymerized synthetic resins impregnated with 8-hydroxyquinolines and elution thereof with aqueous acids, the synthetic resins employed according to the invention are macroporous polydivinylbenzene or macroporous divinylbenzene copolymers which have been obtained by bead polymerization of divinylbenzene or mixtures of aromatic mono-, di- and/or trivinylbenzenes containing at least 50% by weight of divinylbenzene, in the presence of methyl isobutyl ketone, and which have been loaded with 160-190 g of Kelex 100 per liter of resin; in addition the resin is washed with sodium hydroxide solution after the elution step and before the commencement of each individual service cycle.

    摘要翻译: 在通过将镓吸附到用8-羟基喹啉浸渍的珠光聚合的合成树脂上并用含水酸洗脱的水性碱性溶液中回收镓的方法中,根据本发明使用的合成树脂是大孔聚二乙烯基苯或大孔二乙烯基苯共聚物 其通过二甲基苯的珠聚合或含有至少50重量%的二乙烯基苯的芳族单,二和/或三乙烯苯的混合物在甲基异丁基酮的存在下获得,并且已经装载了160-190g 的Kelex 100每升树脂; 此外,在洗脱步骤之后和在每个单独的使用周期开始之前,用氢氧化钠溶液洗涤树脂。