Abstract: In this paper, the application of a noble metal aromatics saturation catalyst (developed by Research Institute of Petroleum Processing) in various viscosities food grade white oil production is introduced. At the 50 kt/a white oil hydrogenation plant of karamay Petrochemical Company, using hydrogenated base oil from the lube oil high pressure hydrogenation unit as feedstock, under the conditions of a reaction pressure of 17.5 MPa, reaction temperature in the range of 216—237 ℃ and a space velocity of 0.3 h-1, the qualities of the low viscosity food grade white oil meet the requirements of National Standard GB4853-1994, and the qualities of the high viscosity products meet the requirements of Company Standard for food grade white oil.

Key words: food grade white oil , ultraviolet absorbance , carbonizable substances , aromatics saturation