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    Preparation of oligomers of alkenes having from 4 to 8 carbon atoms
    4.
    发明授权
    Preparation of oligomers of alkenes having from 4 to 8 carbon atoms 有权
    具有4至8个碳原子的烯烃的低聚物的制备

    公开(公告)号：US07161054B2

    公开(公告)日：2007-01-09

    申请号：US10775064

    申请日：2004-02-11

    申请人： Thomas Heidemann ,  Armin Ulonska ,  Bianca Stäck

    发明人： Thomas Heidemann ,  Armin Ulonska ,  Bianca Stäck

    IPC分类号： C07C2/10

    CPC分类号： C07C2/10 ,  C07C2523/755

    摘要： Process for preparing oligomers of alkenes having from 4 to 8 carbon atoms from a feed stream comprising such alkenes or hydrocarbon streams in which such alkenes are present over a nickel-containing, heterogeneous catalyst in n successive adiabatically operated reactors, where n is 2 or an integer greater than 2, at from 30 to 280° C. and pressures of from 1 to 300 bar, where the feed stream has a temperature Tin when it enters the first reaction zone, experiences a temperature increase in each reaction zone and, if this temperature increase is more than Tin+20° C., is brought to a temperature in the range Tin±20° C. before it enters a subsequent reaction zone, wherein the feed stream is divided and the feed substreams obtained in this way are fed to the 2 reactors, or if more than 2 reactors are used to at least 2 of the reactors, with addition of fresh feed in such a way that the temperature in one of the reactors is at most 20° C. higher than that in each of the other reactors used.

    摘要翻译： 从包含这种烯烃或烃流的进料流中制备具有4至8个碳原子的烯烃的低聚物的方法，其中这些烯烃在n个连续的绝热操作的反应器中存在于含镍的非均相催化剂上，其中n为2或 整数大于2，在30至280℃，压力为1至300巴，其中进料流在其进入第一反应区时具有中的温度T ，经历升温 在每个反应区域中，如果该温度升高超过+ 20℃的温度，则温度在±20℃的范围内。 在其进入随后的反应区域之前，其中进料流被分开，并且以这种方式获得的进料子流进料到2个反应器中，或者如果使用多于2个反应器至少2个反应器，加入新鲜进料 使得其中一个反应器中的温度比t高至多20℃ 每个使用的其他反应堆的帽子。