Catalytic combustion of synthetic fuels. Final technical report. Combustion Laboratory report No. 83-14. [Nitrogen or nitrogen compound reactions during combustion]

Technical Report · Mon Mar 28 04:00:00 EST 1983

OSTI ID:6010893

Kennedy, L A

Experimental and numerical results are reported concerning the lean fuel oxidation of propane in a transition metal oxide based catalytic combustor. The catalyst used was comprised of binary transition metal oxides (Co/sub 3/O/sub 4/, Cr/sub 2/O/sub 3/) deposited either on alumina pellets or alumina washcoated ceramic, honeycomb monoliths. The effect of inlet temperature, inlet velocity and inlet equivalence ratio on combustor operation was studied under lean fuel conditions. The sensitivity of the combustor efficiency to small perturbations in inlet conditions was computed from experimental data. The existence of multiple steady states in the combustor, and the range of inlet conditions under which they occur was investigated. Transitions between the different steady states were also studied. The heterogeneous kinetics for lean fuel oxidation of propane on this catalyst were represented using a three step, global mechanism. The rate parameters were computed from experimental data. The oxidation of nitrogen bound fuels in this combustor was studied using propane doped with ammonia as fuel, over conditions ranging from fuel lean to fuel rich. The catalyst used was found to be very promising, yielding extremely low levels of fuel-NO/sub x/ even under lean fuel operation. A transient one dimensional model, incorporating heat losses from the combustor, axial heat conduction in the substrate, and 3-step mechanisms for surface and gas phase reactions, was developed. The model has provided much insight into the transient behavior of catalytic combustors. The steady state trends predicted by the model match experimentally observed trends well.

• Research Organization: State Univ. of New York, Buffalo (USA). Combustion Lab.
• DOE Contract Number: FG22-80PC30220
• OSTI ID: 6010893
• Report Number(s): DOE/PC/30220-T3; ON: DE83011116
• Country of Publication: United States
• Language: English

Related Subjects

090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
ARRHENIUS EQUATION
CATALYSTS
CATALYTIC COMBUSTORS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COBALT COMPOUNDS
COBALT OXIDES
COMBUSTION
COMBUSTION KINETICS
COMBUSTORS
DATA
DOCUMENT TYPES
EQUATIONS
EXPERIMENTAL DATA
FUEL-AIR RATIO
FUELS
HYDROCARBONS
INFORMATION
KINETICS
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
PROPANE
REACTION KINETICS
REVIEWS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS