采用相对分子质量测定、元素分析、紫外光谱和红外光谱等手段,确定了大庆减压渣油与伊朗重质减压渣油的分子参数,并考察了两个系列减压渣油馏分的模拟乳状液的稳定性。在此基础上,采用复合变量分析探讨了减压渣油馏分的各分子参数之间的关系,以及这些分子参数与模拟乳状液稳定性的关系。结果表明,减压渣油馏分不同的分子参数对其模拟乳状液稳定性的影响不同,其中馏分的相对分子质量、稠环芳香结构的含量、脂肪烃相对含量、羰基相对含量对模拟乳状液的稳定性影响最明显。一般情况下,馏分的相对分子质量越大、稠环芳香结构和羰基含量越高,则乳状液越稳定。 The molecular parameters of Daqing vacuum residue and Iranian heavy vacuum residue were determined by means of relative molecular mass determination, elemental analysis, ultraviolet spectrum and infrared spectroscopy. The effects of simulated milky Liquid stability. On this basis, the relationship between the molecular parameters of the vacuum residue fraction and the relationship between these molecular parameters and the stability of the simulated emulsion were discussed by using the composite variable analysis. The results showed that the different molecular parameters of vacuum residue fraction had different effects on the stability of the simulated emulsion. The relative molecular mass of the fraction, the content of condensed aromatic ring, the relative content of aliphatic hydrocarbon, The most obvious impact on stability. In general, the larger the relative molecular mass of the fraction, the higher the aromatic ring structure and the carbonyl content, the more stable the emulsion.