Process for recovering group VIB metals from a catalyst
    8.
    发明授权
    Process for recovering group VIB metals from a catalyst 有权
    从催化剂中回收VIB族金属的方法

    公开(公告)号:US08057763B2

    公开(公告)日:2011-11-15

    申请号:US11855894

    申请日:2007-09-14

    IPC分类号: C22B1/00

    摘要: The invention relates to a process for recovering Group VIB metals from a catalyst, in particular a spent bulk catalyst, comprising one or more Group VIB metals and one or more Group VIII metals. Further, the invention relates to a solid Group VIB metal compound obtainable by the process according to the invention having the general formula H2XO4, wherein X=W1-yMoy, wherein y is between 0 and 1 and to its use in a process for the manufacture of a fresh catalyst. The process comprises the steps of: a) oxidizing the one or more Group VIB metals to one or more Group VIB metal oxides; b) separating the one or more Group VIB metal oxides from the one or more Group VIII metals; c) dissolving the one or more Group VIB metal oxides in water to produce an aqueous solution of one or more Group VIB metal oxides; d) precipitating the one or more Group VIB metal oxides from the aqueous solution by adding alkaline earth metal (Group IIa) ions to the aqueous solution; e) optionally filtering and washing the precipitate; and f) transforming the precipitate by adding an acid to form a solid metal compound comprising one or more Group VIB metals.

    摘要翻译: 本发明涉及从催化剂,特别是废体积催化剂中回收VIB族V族金属的方法,其中包括一种或多种VIB族金属和一种或多种第Ⅷ族金属。 此外,本发明涉及通过根据本发明的方法获得的具有通式H 2 XO 4的固体VIB族金属化合物,其中X = W1-yMoy,其中y在0和1之间,并且其用于制造方法中 的新鲜催化剂。 该方法包括以下步骤:a)将一种或多种VIB族金属氧化成一种或多种VIB族金属氧化物; b)从一种或多种VIII族金属分离一种或多种VIB族金属氧化物; c)将一种或多种VIB族金属氧化物溶解在水中以产生一种或多种VIB族金属氧化物的水溶液; d)通过向该水溶液中加入碱土金属(IIa)族离子,使该VIB金属氧化物从该水溶液中沉淀出来; e)任选地过滤和洗涤沉淀物; 和f)通过加入酸形成包含一种或多种VIB族金属的固体金属化合物来转化沉淀物。