Enhanced Thermal Oxidation Stability of Jet Fuel by Deoxygenation Treatment

Thermal oxidation stability is an important parameter for jet fuel practical application. In this work, in order to evaluate the influence of deoxygenation on fuel stability, samples of typical fuels (JP-10 and RP-3) were subjected to deoxygenation by nitrogen purge and then subjected to accelerated...

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Bibliographic Details
Published in:Chemistry and technology of fuels and oils 2020-09, Vol.56 (4), p.627-637
Main Authors: Gong, Si, Jia, Tinghao, Pan, Lun, Nie, Genkuo, Zhang, Xiangwen, Wang, Li, Zou, Ji-Jun
Format: Article
Language:English
Subjects:
Antioxidants
Calorific value
Chemistry
Chemistry and Materials Science
Deoxygenation
Fuel and fuel systems
Geotechnical Engineering & Applied Earth Sciences
Heat treatment
Industrial Chemistry/Chemical Engineering
Jet engine fuels
Jet planes
Mineral Resources
Oxidation
Oxidation-reduction reaction
Parameters
Phenolphthalein
Physical properties
Size distribution
Stability analysis
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Summary:Thermal oxidation stability is an important parameter for jet fuel practical application. In this work, in order to evaluate the influence of deoxygenation on fuel stability, samples of typical fuels (JP-10 and RP-3) were subjected to deoxygenation by nitrogen purge and then subjected to accelerated thermal oxidation (180°C, 200°C, and 220°C). The parameters of hydroperoxide number, total acid number, size distribution of insoluble oxidation products, and concentration of remaining antioxidant (butylated hydroxytoluene, MIT) were monitored and analyzed. The results show that deoxygenation and thermal oxidation have very little influence on the fuel physical properties (density, net heating value, and kinematic viscosity). However, deoxygenation significantly reduces hydroperoxide number, total acid number, and remaining BHT concentration in the fuel after accelerated oxidation. Moreover, the deoxygenation treatment also inhibits the formation of soluble macromolecular oxidatively reactive species (SMORS) and insoluble oxidation products such as gums and deposits.
ISSN:0009-3092
1573-8310
DOI:10.1007/s10553-020-01176-w