一种煤基油窄馏分折射率计算方法研究

Refractive index calculation method of coal-derived oil narrow fraction

为了考察寿德清-向正为关系式计算煤焦油及焦油加氢产物窄馏分样品折射率的准确性,在通过分析大量样品和实验数据的基础上,对比了计算值与测定值之间的差异。结果表明:计算中低温煤焦油窄馏分样品的折射率时,样品的计算结果与测定结果相差较大,寿德清-向正为关系式不可直接用于计算煤焦油窄馏分折射率;用寿德清-向正为关系式计算两种焦油加氢产物窄馏分样品的分子量时,样品的计算结果与测定结果较接近,对焦油加氢产物B样品来说,两种方法的平均误差为0.27%,均方差为0.34%;对焦油加氢产物C样品来说,两种方法的平均误差为0.21%,均方差为0.32%。寿德清-向正为关系式可直接用于计算焦油加氢产物折射率。

Investigate SHOU Deqing-X1ANG Zhengwei empirical formula in refractive index calculation of coal- derived oil narrow fraction based on the comparison of a great deal of experimental oil samples and their refractive index. Compare the calculated values and measured values. The results show that, for medium-low temperature coal tar narrow fraction, there is a notable difference between the calculated value and measured value, so the SHOU Deqing-XIANG Zhengwei empirical formula is not suitable for the fraction. When calculating the molecular weight of two kinds of coal tar hydrogenation products, the SHOU Deqing-XIANG Zhengwei empirical formula is suitable. For coal tar hydrogenation product B, the average error is 0.27 percent, mean square deviation is 0.34 percent. For coal tar hydrogenation product C ,the average error is 0. 21 percent, mean square deviation is 0. 32 percent. SHOU Deqing -XIANG Zhengwei empirical formula can be used to calculate refractive index of coal-derived oil narrow fraction.