METHOD OF OBTAINING LOW-VISCOUS WHITE OILS Russian patent published in 2015 - IPC C10G65/02 C10G65/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining low-viscous white oils, in which vacuum gasoil is subjected to hydrocracking with the volume ratio of hydrogen to a raw material of 800-1000 nm³/m³, volume rate of the raw material supply of 0.4-0.6 h^-1, temperature of 340-360°C and partial pressure of hydrogen of 20-30 MPa on Ni/Mo catalyst, applied on a silica-alumina carrier, with the content of active components counted per the catalyst burnt at a temperature of 600°C, wt %: MoO₃ - 35.0, NiO - 15.0, SiO₂ - 7.0 or on Ni/W catalyst, applied on the silica-alumina carrier, with the content of active components counter per the catalyst burnt at a temperature of 600°C, wt %: WO₃ - 25.0, NiO - 10.0, SiO₂ - 5.0. The target fraction with the boiling out temperature from 280 to 340°C, the content of aromatic hydrocarbons above the required norm and the temperature of solidification not higher than minus 10°C is separated from the obtained stream, boiling out in the range of temperatures from 280 to 400°C. Hydration of the target fraction is carried out by its contact with hydrogen with the volume ratio of hydrogen to the raw material of 800-950 nm³/m³ on the catalyst at a temperature of 240-320°C, partial pressure of hydrogen of 6.0-8.0 MPa, volume rate of the raw material supply 0.25-0.5 h^-1.

EFFECT: reduction of the technological process of obtaining white oils for the medical purpose.

4 cl, 1 tbl, 5 ex