Fuels-combustion research. Annual report, 10 October 1986-30 September 1987

Technical Report · Sat Oct 31 04:00:00 EST 1987

OSTI ID:5416258

Dryer, F L; Glassman, I; Williams, F A

After studying soot formation in normal diffusion flames, near and slightly sooting inverse diffusion flames were investigated to determine the key intermediates to soot formation. The results indirectly confirm that the initial number density of soot particles that form scale with aromatic formation just prior to soot inception. Correlations exist between a fuel's sooting tendency as measured by the Princeton smoke-height experiment and the extent of aromatic formation measured in both inverse and normal diffusion flames. Work on the oxidation of the aromatics present in jet propulsion fuels continues with th major effort directed at the dialkylated benzenes. The major study concerned the oxidation of para-xylene. The results indicate oxidation of one side chain at a time before the benzene ring is attached. There is a linear decay of the fuel and the major species detected were toluene, benzene, p-tolualdehyde, p-ethyltoluene and carbon monoxide. Kinetics steps leading to these intermediates are given. Combustion-property observations of isolated boron-slurry droplets were extended to in-house boron/JP-10 slurries with and without surfactants. The experimental results revealed that stabilizing agents are responsible for the violent disruption of the primary slurry droplet and strongly support the previously proposed hypothesis of the formation of the impermeable shell and subsequent disruption phenomena.

• Research Organization: Princeton Univ., NJ (USA). Dept. of Mechanical and Aerospace Engineering
• OSTI ID: 5416258
• Report Number(s): AD-A-187688/7/XAB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKYLATED AROMATICS
AROMATICS
BENZENE
BORON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHAINS
CHALCOGENIDES
CHEMICAL REACTIONS
CLOUDS
COMBUSTION
DECAY
DENSITY
DIFFUSION
DIMENSIONS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
FLAMES
FUEL SLURRIES
FUELS
HEIGHT
HYDROCARBONS
JET ENGINE FUELS
MIXTURES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PERMEABILITY
PHYSICAL PROPERTIES
PROGRESS REPORT
RINGS
SEMIMETALS
SLURRIES
SOOT
STABILIZATION
SUSPENSIONS
THERMOCHEMICAL PROCESSES
XYLENE-PARA
XYLENES