The dissolution equilibrium of DHVR with mixed C 4 solvent was studied in a successive equipment self designed for determining the solubility of residue.

Considering the high cost for chemical agents and low benefit in alkaline-surfactant-polymer combination flooding process, Daqing vacuum residual oil was selected as the raw material for the preparation of cost-effective oil-displacement surfactant OCS in the laboratory.

Preparation and characterization of microcrystalline wax from Shenbei-Daqing vacuum residue;

Effects of catalyst-to-oil ratio on distribution of catalytic pyrolysis gas products of Daqing atmospheric residue;

Multi-dimension separation and composition characterization of Dagang vacuum residue;

Fundamental study on mild thermal cracking of vacuum residue with industrial hydrogen donors;

Structure features of the supercritical fluid extraction and fraction tailing of Dagang vacuum residue;

Application of ultrasound in the viscosity reduction of vacuum residuum

The two processing schemes of high-sulfur vacuum residuum in SINOPEC Qilu Branch were compared from the viewpoint of techno-economy: one is to produce heavy asphalt through vacuum deep extraction process,the other is to produce light oil products through VRDS-FCC assembled process.

Several deasphalted oil samples were obtained from vacuum residuum and FCC slurry oil deasphalted at continuous propane deasaphalting pilot equipment.