| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to a method of producing base oil, involving: providing a first catalyst containing at least one group VIII metal deposited on a M41S catalyst support, such as MCM-41, and having density of 600 kg/m3 or less; providing a second catalyst containing at least one group VIII metal, having dewaxing efficiency which is sufficient to facilitate treatment of a stream of light neutral (150 N) hydrocarbons from a medium-pressure hydrocracking apparatus, having kinematic viscosity at 100C of less than 5 and end boiling point lower than 550C, at 320C and liquid hourly space velocity (LHSV) of 1 h-1, to obtain base oil having chilling temperature lower than 15C; bringing the material into contact with the first catalyst at adequate conditions for treating the material, wherein said adequate conditions are adequate for one of the processes selected from hydrotreatment, hydrofining or hydrogenation of aromatic compounds, and bringing the treated material into contact with the second catalyst at conditions adequate for dewaxing the treated material. The invention also relates to another method of producing base oil. ^ EFFECT: enabling flexible treatment of material with different paraffinicity. ^ 13 cl, 12 dwg, 3 tbl, 19 ex |
