IMPACT OF ADDITIVES ON JET FUEL THERMAL STABILITY

摘要

The impact of jet fuel additives on jet fuel thermal oxidative stability, as determined by JFTOT breakpoints, has been investigated. Ellipsometry was used to quantify heater tube deposits which offer a more precise evaluation of a fuel's thermal stability. Tests utilizing slower flow rates were also conducted to judge the fuels thermal stability under more severe conditions in cases where the breakpoint was too high to evaluate using standard conditions. The additive impact on the fuel used in this study was found to be minimal for antioxidant, improved for both fuel system icing inhibitor and metal deactivator, and lowered for static dissipator and corrosion inhibitor additives. Corrosion inhibitor additive had the greatest negative impact and metal deactivator additive had the greatest positive impact on the base fuels thermal stability. In addition to improving the thermal stability, metal deactivator altered the fuel JFTOT tube deposit profiles significantly.