【摘要】 经生物基加氢处理(HRJ)的可再生喷气燃料工艺生产的航空替代燃料,其主要成分为直链烷烃。根据其生物基的特点,可以推断出燃料的碳数分布主要位于C13~C18之间。由此讨论了C13~C18直链烷烃的碳数及掺混质量分数对燃料运动黏度、密度、表面张力等理化性能的影响,进一步由理化性能变化出发探究了直链烷烃对索特尔平均直径(SMD)的影响。将Key’s混合规律、Tat M混合规律和多项式拟合应用于密度公式的拟合,并将Key’s混合规律与对数拟合应用于黏度公式的拟合,对比得出精度较高的理化性能拟合公式。雾化实验发现混合燃料的SMD随添加的链烷烃质量分数增大而增大,即表示添加了链烷烃的航空煤油雾化性能有所下降。更多还原

【Abstract】 Alternative fuels is produced by Hydroprocessed Renewable Jet（ HRJ）,Its main components are nalkanes,and the range of the carbon number is C₁₃ C₁₈ This paper discussed the impact of n-alkanes( C₁₃ C₁₈)on the physical properties of kerosene,including kinematic viscosity,density and surface tension,and investigated the effects of n-alkanes( C₁₃ C₁₈) on SMD（ Sauter Mean Diameter） further.The density fitting equation used the Key’s blending law、the Tat M blending law and polynomial fitting.The viscosity fitting equation used the Key’s blending law and logarithmic fitting.This fit-ting equation in this investigation have optimal accuracy.By the atomization experiment,it was found that the SMD of mixed fuels increases with the mass percentage of n-alkanes,which means that the added n-alkanes have negative effect to the atomization performance of kerosene.更多还原