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提出石油馏分化学的严格计算方法。通过以正构模型分子模拟石油馏分组成的方法计算了轻质及中质石油馏分的化学。考察了异构烷烃及多环环烷烃、多环芳烃的存在对计算精度的影响，并以实验数据检验了本法的可靠性。研究表明，用本文提出的方法计算直馏石油馏分化学，计算误差小于2％，可以满足需要。
Put forward the strict calculation method of petroleum distillate chemistry. The chemistry of light and medium petroleum fractions was calculated by molecular modeling of petroleum fractions in a positive model. The effects of isoparaffins, polycyclic naphthenes and polycyclic aromatic hydrocarbons on the calculation accuracy were investigated. The reliability of this method was verified by experimental data. The results show that the method proposed in this paper can be used to calculate the chemical fractionation of straight-run petroleum fractions. The calculated error is less than 2%, which can meet the needs.