PHENOL AND AMINE ADDITIVES TO INHIBIT SEDIMENT FORMATION IN GAS TURBINE AIRCRAFT FUELS.
Rept. no. 6 on AID Work Assignment no. 28.
AEROSPACE INFORMATION DIV LIBRARY OF CONGRESS WASHINGTON D C
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Comment is made on Russian research into additives for inhibiting sedimentation in fuels containing 30 cracking compounds. Experiments were conducted at 120C with simultaneous determination of the corrosiveness of the inhibited fuel and the extent of deposit on BB-24 bronze 4.5 to 6.2 antimony and 0.4 to 0.9 lead. Alkylated phenols, beta-naphthol, pyrocatechol, and semicoking distillation products from Cheremkhovo coals were unable to prevent or stop sedimentation, although a 50 to 70 reduction in formation was achieved. Beta-naphthol was the most effective phenol. Aromatic amines and diamines, aliphatic polyamines, and aminophenols did not achieve complete inhibition. Primary and secondary aromatic amines were better in sulfurous fuel, white tertiary aromatic amines worked better in low-sulfur fuel. Heterocyclic compounds had little effect. Of the other nitrogencontaining compounds, the amide of stearic acid inhibited sediment formation completely in hot fuel, although the sediment reappeared on cooling.