【摘要】 苯胺点是表征石油馏分烃类结构和化学组成的物性。采用127个石油馏分的苯胺点实验数据,评价7种基于油品物性的苯胺点关联式估算能力。结果表明:以中平均沸点（中沸点）和相对密度(d_15.6^15.6)为间接变量的WalshMortimer法和Albahri法关联式对苯胺点估算结果的偏差最大,平均相对偏差分别为25.10%、7.89%。Winn列线图法对苯胺点估算结果的平均相对偏差为1.27%,但该方法难以拟合为关联式,不适于计算机计算;Linden法、API法、陈雄华法和寿德清-向正为法关联式对苯胺点估算结果的平均相对偏差分别为1.73%、1.45%、0.98%和0.96%。陈雄华法和寿德清-向正为法关联式对苯胺点估算结果平均相对偏差小于3%,石油馏分数目分别为92.9%和98.4%;石油馏分苯胺点的估算首选寿德清-向正为法和陈雄华法关联式,其次为API法和Linden法关联式;通过对7种苯胺点估算方法的评价,为估算方法的选择和改进提供借鉴。更多还原

【Abstract】 Aniline point is a property that characterizes the hydrocarbon structure and chemical composition of petroleum fractions. 127 aniline point experimental data of petroleum fractions were used for the evaluation of seven correlations of aniline point with petroleum fractions properties as variables. The results indicate that Walsh-Mortimer and Albahri correlations with medium average boiling point（middle boiling point） and relative density(d_15.6^15.6) as indirect variables have great deviations for the estimation of aniline point, with the average relative deviations（ARD） of 25.10% and 7.89%. The ARD of Winn nomogram for aniline point is 1.27%.However, the Winn nomogram is difficult to be fitted as a correlation, which is not suitable for the computer calculation. Linden, API, Chen, et al, and Shou-Xiang correlation present good results for the estimation of the aniline point, and the ARD is 1.73%,1.45%,0.98%, and 0.96%, respectively. The petroleum fractions, which are estimated by Chen, et al and Shou-Xiang correlation with the ARD less than 3%, account for 92.9% and 98.4%, respectively. The preferred methods are Shou-Xiang and Chen, et al correlation for the estimation of aniline point of petroleum fractions, followed by API and Linden correlations. By evaluating the seven estimation methods for aniline point, it provides references for the method selection and improvement.更多还原