关键词: 渣油, 胶体稳定性, 极性

Abstract: FCC slurry oil and HVGO were added to Suizhong atmospheric residue, respectively. The effect of various heavy oil fractions on the colloidal stability of residue system was studied by mass fraction normalized conductivity method. Results indicated that the addition of these two fractions in atmospheric residue exhibited negative effect on the colloidal stability of residue system, and the negative effect of adding FCC slurry oil was stronger. By analyzing the SARA compositions and polarities of these heavy fractions and atmospheric residue, it was found that both the composition variation and polarity variation affected the colloidal stability of residue system, yet the later was the main factor. The disparity in polarity between heavy fraction and residue was the main cause of altering the colloidal stability of residue system.

Key words: resdiue, colloidal stability, polarity