Spectroscopic inference of alkane, alkene, and aromatic formation during high-temperature JP8, JP5, and Jet-A pyrolysis

FUEL

卷:269

Article

Pinkowski, Nicolas H.¹  Cassady, Sean J.¹  Davidson, David F.¹  Hanson, Ronald K.¹ 

[1] Stanford Univ, Dept Mech Engn, High Temp Gasdynam Lab, Stanford, CA 94305 USA

关键词: Jet fuel;    Pyrolysis;    Shock tube;    Laser absorption spectroscopy;    Convex optimization;    JP8;    JP5;    Jet-A;   

DOI  :  10.1016/j.fuel.2020.117420

来源: Elsevier

【 摘 要 】

The speciation of jet-fuel pyrolysis plays an important role in the development of predictive models for jet-fuel combustion. In this work, a mull-wavelength speciation technique was applied to a large dataset of shock-tube laser-absorption measurements of jet-fuel pyrolysis. A novel absorbance model was developed to interpret the measurements at common conditions, and pyrolysis product time-histories and early-time yields are reported for three jet fuels at five high-temperature conditions. Specifically, methane, ethylene, and lumped vinyl-group time-histories, in addition to aromatics (benzene and toluene) yields, were quantified using eight wavelengths over conditions 1040-1480 K, 1-3 atm, for jet fuels JP8, Jet-A, and JP5. Results are presented at 1150 K, 1200 K, 1250 K, 1300 K, and 1350 K. Additional relationships between vinyl-group-containing species, namely propene, 1-butene, and 1,3-butadiene, are explored. The mole fraction time-histories exhibit good agreement with the literature and extend the speciation of these jet fuels to the limits of current spectroscopic techniques.

【 授权许可】

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