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    Processes for treating aluminium dross residues
    6.
    发明授权
    Processes for treating aluminium dross residues 有权
    处理铝渣渣的方法

    公开(公告)号：US07651676B2

    公开(公告)日：2010-01-26

    申请号：US11944567

    申请日：2007-11-23

    申请人： Martin Beaulieu ,  Stéphane Chabot ,  Yves Charest ,  Jean-François Savard

    发明人： Martin Beaulieu ,  Stéphane Chabot ,  Yves Charest ,  Jean-François Savard

    IPC分类号： C01F7/56 ,  C01F7/30 ,  C22B21/00

    CPC分类号： C22B21/0023 ,  C22B3/10 ,  C22B7/007 ,  C22B21/0069 ,  Y02P10/234

    摘要： There is provided a process for preparing aluminium chloride comprising: leaching aluminium dross residues with HCl so as to obtain a mixture comprising a solid and a liquid; and hydrochlorinating the liquid obtained from the mixture, so as to form a precipitate comprising aluminium chloride. Such a sequence can also be used for preparing alumina. In such a case, the process can further comprise the step of converting the so-obtained aluminium chloride into alumina. In the processes previously defined, the solid so-obtained can also be leached with H2SO4, thereby generating a leachate. The leachate can also eventually be hydrochlorinated so as to increase the yield of the desired product obtained i.e. alumina or aluminium chloride.

    摘要翻译： 提供了一种制备氯化铝的方法，包括：用HCl浸出铝渣渣，以获得包含固体和液体的混合物; 并从混合物中获得的液体氢氯化，以形成包含氯化铝的沉淀。 这样的顺序也可用于制备氧化铝。 在这种情况下，该方法还可以包括将如此获得的氯化铝转化成氧化铝的步骤。 在先前定义的方法中，如此获得的固体也可以用H 2 SO 4浸出，从而产生浸出液。 也可以最终将浸出液氢氯化，以提高所得产物（即氧化铝或氯化铝）的产率。

    Process for reducing the formaldehyde content of a gas
    8.
    发明申请
    Process for reducing the formaldehyde content of a gas 有权
    降低气体甲醛含量的方法

    公开(公告)号：US20070081933A1

    公开(公告)日：2007-04-12

    申请号：US11245185

    申请日：2005-10-07

    申请人： Stephane Chabot ,  Martin Beaulieu ,  Yves Charest ,  Dominique Le Bel

    发明人： Stephane Chabot ,  Martin Beaulieu ,  Yves Charest ,  Dominique Le Bel

    IPC分类号： B01D53/56 ,  B01D53/48

    CPC分类号： B01D53/72 ,  B01D2251/106 ,  B01D2257/704

    摘要： There is provided a process for reducing formaldehyde content of a gas comprising the step of contacting the gas with an aqueous oxidizing solution comprising at least one cation, a base, and H2O2 so as to oxidize at least a part of the formaldehyde contained in the gas into formic acid. Thus, a gas having a reduced content in formaldehyde as compared to the gas before the process and a solution comprising formic acid, are so-obtained. Such a process can be particularly useful for treating various types of gases containing formaldehyde.

    摘要翻译： 提供一种降低气体甲醛含量的方法，包括使气体与包含至少一种阳离子，碱和H 2 O 2 O 2的水性氧化溶液接触的步骤， 以将氧气中的至少一部分甲醛氧化成甲酸。 因此，如此获得具有与过程之前的气体相比具有降低的甲醛含量的气体和包含甲酸的溶液。 这种方法对于处理含有甲醛的各种气体特别有用。