Accession Number ADA564573
Title Supercritical Fuel Pyrolysis.
Publication Date May 2010
Media Count 88p
Personal Author M. J. Wornat
Abstract Supercritical pyrolysis experiments were conducted with the two-ring model fuel 1-methylnaphthalene at 585 C and pressures of 50 to 110 atm and at 80 atm and temperatures of 550 to 600 C. Quantification of the product polycyclic aromatic hydrocarbons (PAH) by high-pressure liquid chromatography (HPLC) showed linear increases in PAH yields with increasing pressure; with increasing temperature, rates of PAH yield increases rose steadily. Higher- temperature supercritical pyrolysis experiments with toluene showed that 700 C, the highest temperature of the reactor, was not hot enough to break aromatic C- C bonds in the supercritical fuel pyrolysis environment. Supercritical pyrolysis experiments were conducted with the model alkane fuel n-decane at 570 C and pressures of 40 to 100 atm and at 100 atm and temperatures of 530 to 570 C. Application of a newly developed normal-phase HPLC fractionation / reversed- phase HPLC analysis technique led to the identification of 276 individual product PAH of up to 9 aromatic rings many of which were first-time identifications as products of n-decane. Quantification of the PAH products showed exponential increases in PAH yields with increasing pressure or increasing temperature. Yields increased the most sharply for the highest-ring- number PAH, immediate precursors to carbonaceous solids.
Keywords 1- methylnaphthalene
Aromatic compounds
Aromatic hydrocarbons
Aviation fuels
Carbonaceous solid deposits
Component reports
High- pressure liquid chromatography
Hypersonic aircraft
Jet engine fuels
Liquid chromatography
N-decane
Pah formation chemistry
Pah(Polycyclic aromatic compounds)
Polycyclic aromatic hydrocarbons
Pyrolysis
Reaction kinetics
Reaction mechanisms
Supercritical flow
Supercritical fuel pyrolysis
Supercritical pyrolysis
Synthetic jet fuel
Toluenes


 
Source Agency Non Paid ADAS
NTIS Subject Category 99D - Basic & Synthetic Chemistry
99F - Physical & Theoretical Chemistry
97K - Fuels
Corporate Author Louisiana State Univ., Baton Rouge. Dept. of Chemical Engineering.
Document Type Technical report
Title Note Final technical rept. 1 Dec 2006-30 Nov 2009.
NTIS Issue Number 1303
Contract Number FA9550-07-1-0033

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