Abstract: Hydrogenation experiments were carried out using diesel hydrogenation catalyst to investigate the effect of reaction temperature on hydrogenation efficiency with naphthenic distillate AGO3 and VGO2 as raw materials. The results showed that under the conditions of a reaction pressure of 7 MPa ,a mass space velocity of 1.0 h^-1,a hydrogen-oil volume ratio of 500:1, the product with AGO3 hydrotreating at reaction temperature of 340 ℃ has the feasibility of developing " rubber plasticizer aromatic base mineral oil(GB/T 33322—2016)" A1004 product. It is feasible to develop A0709 product for the product with VGO2 hydrotreating at the reaction temperature of 350 ℃. After hydrogenation, most of the forced carcinogenic aromatics in the product are effectively removed, and only benzo (e) pyrene is left, which is a major component affecting the content of eight specific aromatics because of its high steric hindrance and difficult to hydrogenate. The medium pressure hydrotreating process can directly prepare environmentally friendly rubber plasticizer and improve the yield of refined oil.

Key words: naphthenic distillate, rubber plasticizer, medium pressure hydrogenation, polycyclic aromatic hydrocarbon