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    • 52. 发明授权
    • Reclaiming used lubricating oils
    • 回收二手润滑油
    • US4151072A
    • 1979-04-24
    • US838773
    • 1977-10-03
    • Gerhard P. NowackDonald C. TablerMarvin M. Johnson
    • Gerhard P. NowackDonald C. TablerMarvin M. Johnson
    • C10M175/00C10M11/00
    • C10M175/0016
    • An integrated process universally applicable for the reclaiming of used lubricating oils, regardless of the contaminants or previous additive systems contained therein, is provided to produce an intermediate low-ash oil or a high-grade lube oil stock which comprises (a) contacting the used oil with an aqueous ammonium salt treating agent, (b) removing a major portion of water, (c) separating the oil phase from the resulting residual product, (d) subjecting the resulting separated oil to hydrotreating and thereafter (e) stripping the resulting hydrotreated lube oil stock. Optionally the low-ash product of step (c) can be recovered for use as a fuel oil, in grease formulations, or in the preparation of some types of lubricating oil formulations.
    • 提供了普遍适用于回收利用的润滑油的综合方法,不管其中含有的污染物或以前的添加剂系统如何,以生产中间体低灰分油或高级润滑油原料,其包含(a)使用过的 (b)除去大部分水,(c)从所得残留物中分离出油相,(d)将得到的分离的油进行加氢处理,然后(e)将得到的油相 加氢处理润滑油原料。 任选地,步骤(c)的低灰分产物可以回收用作燃料油,润滑脂制剂或制备某些类型的润滑油制剂。