Wax hydroisomerization process
    7.
    发明授权
    Wax hydroisomerization process 失效
    蜡加氢异构化工艺

    公开(公告)号:US06383366B1

    公开(公告)日:2002-05-07

    申请号:US09601858

    申请日:2000-11-14

    IPC分类号: C10G35085

    摘要: Waxy feeds are treated under hydroisomerization conditions to produce good yields of an isomerate product of high VI by using a silica-alumina based catalyst in which the silica-alumina has a pore volume less of 0.99 ml/gm (H2O), an alumina content in the range of 35 to 55 wt % and an isoelectric point in the range of 4.5 to 6.5. A lube fraction of the isomerate is dewaxed to provide a lube basestock of high VI. The silica-alumina may be modified with a rare earth oxide or yttria or boria or magnesia in which instance the modified catalyst has an isoelectric point greater than but no more than 2 points greater than base the silica-alumina.

    摘要翻译: 在加氢异构化条件下处理蜡进料,通过使用二氧化硅 - 氧化铝基催化剂,其中二氧化硅 - 氧化铝的孔体积小于0.99ml / gm(H 2 O),氧化铝含量为 35〜55重量%的范围,等电点为4.5〜6.5。 将异构体的润滑部分脱蜡以提供高VI的润滑油基础油料。 二氧化硅 - 氧化铝可以用稀土氧化物或氧化钇或氧化硼或氧化镁进行改性,其中改性催化剂的等电点大于但不超过二氧化硅 - 氧化铝基质的2分。