论文部分内容阅读
通过原油的实沸点蒸馏,把大庆石蜡基原油切割为TBP馏分,并对各馏分进行密度和平均相对分子质量的测定,依据测取的各TBP馏分相关物性数据,研究大庆石蜡基原油TBP馏分相关物性的关系,借助数学分析方法和计算机的高精度计算,建立大庆石蜡基原油TBP馏分的平均相对分子质量数学关联式,式中平均相对分子质量为该馏分的中沸点t和密度ρ的函数,此平均相对分子质量数学关联式的计算精度比Riazi-Daubert等建立的关联式高得多,其最大偏差仅为0.0454,该关联式在要求高精度求取石蜡基原油馏分平均相对分子质量的场合具有实用价值。
Through the real boiling point distillation of crude oil, the Daqing paraffinic crude oil was cut into TBP fractions, and the density and average relative molecular mass of each fraction were determined. According to the relevant physical property data of each TBP fraction, the correlation between Daqing paraffinic crude TBP fraction Physical properties of the relationship between the use of mathematical analysis and high-precision computer calculations to establish Daqing paraffin base oil TBP fractional average relative molecular mass mathematical correlation formula, where the average molecular weight of the fraction of the boiling point t and density ρ as a function of density, The calculation accuracy of the mathematical formula for the average relative molecular mass is much higher than that established by Riazi-Daubert et al., And the maximum deviation is only 0.0454. When the correlation coefficient is required to obtain the average relative molecular mass of the paraffinic crude oil fraction Has practical value.