柴油正构烷烃碳数分布的统计学分析及其对流动改进剂感受性的影响  

STATISTICS STUDY ON CARBONS DISTRIBUTION IN DIESEL N-PARAFFIN AND ITS SUSCEPTIBILITY ON FLOW IMPROVER

作　　者：吕涯[1] 邢付雷[1] 翁惠新[1] 

机构地区：[1]华东理工大学石油加工研究所,上海市200237

出　　处：《炼油技术与工程》2005年第5期43-45,共3页Petroleum Refinery Engineering

摘　　要：对五种柴油的正构烷烃含量和碳数分布作了测定,并从统计学角度进行了详细的描述和分析。在显著性水平为0.10时,五种柴油的正构烷烃的碳数分布均符合正态分布。根据正态分布的分析,计算了正构烷烃的平均相对分子质量μ和碳数分布方差σ2。σ2较小时,柴油对低温流动改进剂的感受性较差。检验统计量χ2可以反映柴油正构烷烃符合正态分布的程度,当油样中的正构烷烃分布不太符合正态分布的时候,其对各种流动改进剂的感受性较差。The n-paraffin content and carbons distribution of five diesels have been determined and analyzed in the light of statistics in detail. With the significance level a=0.10, n-Paraffin carbons distribution of the five diesels conforms to normal distribution. The mean relative molecular mass of n-paraffin and the carbons distribution variance σ2 have been calculated based on the analysis of normal distribution. The susceptibility of diesel on low temperature flow improver is bad when σ2 is smaller. The degree of diesel n-paraffin conformance to normal distribution has been reflected by the statistics test quantity χ2, and the susceptibility of diesel samples on various flow improver is bad when its n-paraffin distribution does not conform to normal distribution.

关 键 词：碳数分布 感受性 统计学分析 柴油 平均相对分子质量 低温流动改进剂 正态分布 正构烷烃分布 显著性水平 检验统计量 烃含量 较差 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]