GAS TURBINE AND JET ENGINE FUELS
Progress rept. no. 4
PHILLIPS PETROLEUM CO BARTLESVILLE OK
Pagination or Media Count:
The fourth bimonthly period continued the study of the effects of sulfur in jet fuels on the durability of jet engine hot section components. The effort involved evaluation of the tensile strengths of Udimet 500, Waspalloy, Haynes Alloy 25, Hastelloy R-235 and Rene 41 simulated turbine inlet guide vanes following 12 hours exposure to sulfur-free exhaust gases at 2000F in the Phillips 2-Inch Research Combustor. Recent literature on the oxidation of SO2 to SO3 indicates that 1 very little SO2 is converted to SO3 at temperatures typical of those existing in jet engine combustion and turbine sections, 2 the oxidation of SO2 to SO3 is catalyzed quite markedly by the oxides of chromium and iron, both of which are plentiful in jet engines - this is significant only below about 1700F, 3 significant conversion of SO2 to SO3 might occur in lower temperature zones such as tailpipes and idle afterburners, suggesting the possibility of greater sulfur attack on these components than on hot section components, and 4 sulfur corrosion of combustor liners and turbine blades would not appear to be attributable to SO3.
- Jet and Gas Turbine Engines