Blending method of low viscosity fischer-tropsch base oils and fischer-tropsch derived bottoms or bright stock

Blending method of low viscosity fischer-tropsch base oils and fischer-tropsch derived bottoms or bright stock

  • CN 1,829,788 B
  • Filed: 02/19/2004
  • Issued: 07/04/2012
  • Est. Priority Date: 03/11/2003
  • Status: Active Grant
First Claim
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1. method for preparing Fisher-Tropsch derived lubricating base oil concoction;

  • It comprises with suitable proportion blending fischer-tropsch overhead product cut and Fisher-Tropsch derived tower bottom distillate produces Fisher-Tropsch derived lubricating base oil;

    This base oil is characterised in that the kinematic viscosity under 100 ℃

    is 3 to 10 centistokes;

    TGA Noack volatility is lower than 45wt%;

    Over point is in 288 ℃

    to 330 ℃

    scope, and final boiling point is 538 ℃

    to 760 ℃

    , and the concoction that wherein is lower than 30wt% seethes with excitement in the 50wt% boiling point adds or deduct the zone that-4 ℃

    (25 °

    of F) limit;

    Wherein said overhead product cut is characterised in that 100 ℃

    of following kinematic viscosity are 2 centistokes or bigger but less than 3 centistokes, wherein 100 ℃

    down the kinematic viscosity of Fisher-Tropsch derived tower bottom distillates be that 9 centistokes are to 20 centistokes.

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