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Multiple ignition, normal and catalytic combustion and quenching of fuel/air mixtures. Interim report 1 Jun 77-31 May 78

Technical Report ·
OSTI ID:5803686
; ; ;
Ignition of a quiescent propane/air mixture by a stationary, hot, inert particle has been modeled. The tentative conclusion from the model is that an abraded aluminum particle must have a diameter greater than 800 microns to ignite a stoichiometric propane/air mixture. Experimental data show that a burning aluminum particle must be initially larger than 20-40 microns in diameter to ignite a stoichiometric methane/air mixture. Lean combustion of propane in platinum/alumina/cordierite catalysts has been studied at atmospheric pressure and gas velocities of 5-30 m/s. Measurements of substrate temperature and gas composition, pressure and temperature inside and downstream of the catalyst have been made. The dependences of substrate temperature, gas temperature, and gas composition on inlet temperature, reference velocity, and equivalence ratio have been investigated. Homogeneous reactions in the exhaust are observed only at the higher equivalence rations. Broader interpretation of the variation in exhaust composition with inlet conditions awaits completion of the development of the numerical model. (Author)
Research Organization:
Princeton Univ., NJ (USA). Dept. of Mechanical and Aerospace Engineering
OSTI ID:
5803686
Report Number(s):
AD-A-064560
Country of Publication:
United States
Language:
English

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Related Subjects

090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKANES
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
FUELS
GASES
HYDROCARBONS
IGNITION
METALS
METHANE
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PARTICLES
PROPANE
SIZE
SUBSTRATES
THERMOCHEMICAL PROCESSES