Abstract: A comprehensive utilization for propane deasphalting process of Caofeidian vacuum residue was researched. The heavy-duty paving asphalt can be produced from the mixture of the de-oiled asphalt from Caofeidian vacuum residue and the furfural extract oil from vacuum residue of SuiZong-361 crude. The quality of the paving asphalt product satisfies with the national standard GT/T 15180-2000. Several cuts with very low content of aromatics, sulfur and nitrogen can be obtained from the deasphalted oil of Caofeidian vacuum residue by the processes consisting of hydrotreating-distillation-hydroisomerization/hydrofinishing. Among of them, the fraction of 280~380 ℃ can be used as high quality solvent, the fraction of 380~460 ℃ and the fraction of >460 ℃ can meet the standard of API Ⅱ and API Ⅲ base oil, respectively.

Key words: propane deasphalting process, heavy-duty paving asphalt, lube base oil