Effect of additives on jet fuel thermal stability determined using the gravimetric JFTOT

Conference · Tue Oct 01 04:00:00 EDT 1996

OSTI ID:370745

Pande, S G ^[1]; Hardy, D R ^[2]

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1. Geo-Centers, Inc., Ft Washington, MD (United States)
2. Naval Research Lab., Washington, DC (United States)

In an effort to address the need for improving the thermal stabilities of jet fuels, various additives are being examined. These include the antioxidant, BHT; a metal deactivator, MDA (N,N{prime}-Disalicylidene-1,2-propane diamine); a combination of BHT and MDA; and two dispersant/detergent additives, viz., a Betz and Mobil additive. In general, the additives were screened in three test fuels, viz., a refinery sampling blend (RSB), a JP-8, and a Jet A. Additive effectiveness on aging a fuel in the presence of 400 ppb copper was examined in the RSB fuel. Based on the studies conducted, the most effective additives were the MDA/BHT combination, the Betz, and the Mobil additive (when tested). For example, these additives significantly lowered the total thermal deposits formed for the copper-doped aged fuel. For the remaining two test fuels, differentiation in effectiveness among the additives screened was considerably less. These results, which are likely due to the test fuels being relatively thermally stable, focus on the necessity of using less stable fuels to better differentiate additive effectiveness.

• OSTI ID: 370745
• Report Number(s): CONF-960376--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ANTIOXIDANTS
DEPOSITS
DETERGENTS
FUEL ADDITIVES
JET ENGINE FUELS
STABILITY