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    Process for producing a colorless mineral oil having good hazing properties
    2.
    发明授权
    Process for producing a colorless mineral oil having good hazing properties 失效
    生产具有良好危害特性的无色矿物油的方法

    公开(公告)号：US3926777A

    公开(公告)日：1975-12-16

    申请号：US48168574

    申请日：1974-06-21

    Applicant: STANDARD OIL CO

    Inventor： MENZL ROLAND L

    IPC: C10G45/08 ,  C10G65/04 ,  C10G67/04 ,  C10G23/04

    CPC classification number: C10G45/08 ,  C10G2400/14

    Abstract: The process comprises contacting a mineral lubricating oil distillate with a first hydrogenation catalyst in a first hydrogenation reaction zone to obtain a first hydrogenated product; subjecting said first hydrogenated product to a solventdewaxing treatment to obtain a dewaxed, hydrogenated product; contacting said dewaxed, hydrogenated product consecutively with a second hydrogenation catalyst in a second hydrogenation reaction zone and a third hydrogenation catalyst in a third hydrogenation reaction zone. The contacting in each hydrogenation zone is carried out under selected hydrogenation conditions and in the presence of hydrogen. The first hydrogenation catalyst and second hydrogenation catalyst each comprise a metal of Group VIII and a metal of Group VIB on a non-acidic or weakly-acidic support, while the third hydrogenation catalyst comprises a Group VIII noble metal on a suitable support. The improvement of subjecting the first hydrogenated product to a solvent-dewaxing treatment prior to the subsequent hydrogenation treatments provides a colorless mineral oil having good hazing properties.

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