METHOD OF HYDROGENATING SYNTHETIC OIL AND METHOD OF PRODUCING BASE FUEL Russian patent published in 2011 - IPC C10G45/10 C10G45/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of hydrofining synthetic oil, realised by bringing synthetic oil, obtained via Fischer-Tropsch synthesis and having content of C-9-21 hydrocarbons greater than or equal to 90 wt %, into contact with a hydrofining catalyst which has a support which contains one or more solid acids selected from ultra-stable Y-(USY) zeolite, aluminosilicate, zirconia-silicate and aluminium-bromine oxide catalyst and at least one metal selected from a group comprising group VIII metals, deposited on the support, in the presence of hydrogen with regulation of the reaction temperature when the hydrofining catalyst is in contact with the synthetic oil, in order to hydrofine the synthetic oil such that content (wt %) of C8 or lower hydrocarbons in the synthetic oil after contact is 3-9 wt % higher than before contact. The invention also relates to a method of producing base fuel material.

EFFECT: obtaining base oil with excellent low-temperature rheological properties with good output of the middle fraction of the synthetic oil.

6 cl, 8 ex, 2 tbl, 1 dwg