This work selected and characterized compositions and properties of three types of fatty acid⁃based and three types of fatty acid ester⁃based antiwear agents. Using hydrogenated diesel oil from Hebei Zhongjie Petrochemical Group Co.Ltd as testing model, the lubrication property and anti⁃emulsification capability of six types of antiwear agents were investigated. The results indicate that lubrication property gradually increases with the increasing content of antiwear agent. Monoglyceride antiwear agent shows the best lubrication property. The attrite speckle diameter of model diesel oil reduces from 734 μm to 345 μm, when the volume of Ester⁃type antiwear agent E is 200 mg/kg. Ester⁃type antiwear agent G has lower film formation capability and lubricating property because of lacking -OH polar group. Acid⁃type antiwear agent exhibits better anti⁃emulsification capability than ester⁃type agent with -OH hydrophilic group. Meanwhile, its anti⁃emulsification capability would get worse when HLB value goes up. Mixing the two materials of acid⁃type and ester⁃type antiwear agents can improve anti⁃emulsification capability of diesel oil, but has less impact on its lubricating property whether the agents are mixed or not.

Taking Suizhong 36-1 70 ^# asphalt as matrix asphalt, minus three line furfural extract oil as compatilizer, the effects of four modifiers on the conventional, high temperature shear rheological and thermal storage properties of suizhong asphalt were investigated. The morphological characteristics of SBS phase in asphalt under different modifiers were analyzed. The results show that the modified asphalt prepared by the modifier A has excellent performance in the high and low temperature and it has good compatibility with Suizhong asphalt. With LG501S, YH791, A and B as the modifier, the rut factor G*/sinδdelta of modified asphalt increases gradually, and the high temperature performance is enhanced. By screening the modifiers and stabilizers, the modifier A and stabilizer 2 ^# are selected as raw materials for the production of I-D modified bitumen from Suizhong 36-1 asphalt.

In this article, effects of hydrogen partial pressure and reaction temperature on removal of 8 kinds of polycyclic aromatic hydrocarbons(PAHs) by hydrogenation was studied by naphthenic vacuum gas oil. The results showed that because of stereohindrance effect of BaP and BeP, PAHs in naphthenic vacuum gas oil were difficult to remove by hydrofining process. The higher the hydrogen partial pressure, the easier it was to remove large space steric hindrance of PAHs. Under the condition of hydrogen partial pressure 4~10 MPa, the effect of hydrogen partial pressure on the extreme value point of the transformation of dynamic control to thermodynamic control was not obvious. However, Under high pressure, the effect of hydrogen partial pressure was obvious, and the hydrogenation process of the PAHs was controlled by dynamic control when the hydrogen partial pressure was 15 MPa.