Two stage extraction oil treatment process
    4.
    发明授权
    Two stage extraction oil treatment process 失效
    两阶段萃取油处理工艺

    公开(公告)号:US06802960B1

    公开(公告)日:2004-10-12

    申请号:US09665908

    申请日:2000-09-20

    IPC分类号: C01G2102

    CPC分类号: C10G21/00 C10G2400/10

    摘要: A process for the production of a process oil, the process comprising: a) contacting a petroleum distillate with a polar solvent in an extraction column which operates with a bottom temperature of 30 to 80° C., b) withdrawing a primary raffinate from the column of step a), c) contacting the primary raffinate with a polar solvent in an extraction column which operates at a bottom temperature that is higher than the bottom temperature of the extraction column of step a), and in the range of 60 to 90° C., d) withdrawing a secondary extract from the column of step c), and e) removing said polar solvent from said secondary extract.

    摘要翻译: 一种用于生产加工油的方法,该方法包括:a)将石油馏出物与极性溶剂在萃取塔中接触,萃取塔的底部温度为30至80℃,b)将主要萃余液从 的步骤a)的柱,c)在提取塔中使主要萃余液与极性溶剂接触,萃取塔的操作温度高于步骤a)的提取塔的底部温度,并且在60至90℃的范围内 ℃),d)从步骤c)的塔中取出第二提取物,和e)从所述第二提取物中除去所述极性溶剂。