Fundamentals of nitric oxide formation in fossil fuel combustion. Quarterly progress report, 11 September--10 December 1976. [5 refs]

Technical Report · Tue Mar 01 04:00:00 EST 1977

DOI:https://doi.org/10.2172/7099818· OSTI ID:7099818

Houser, T.

A study of the reaction mechanism which leads to NO formation from fuel-nitrogen by determining the rates and mechanisms of pyridine pyrolysis and cyanogen oxidation was continued. The emphasis was shifted to the determination of the rate of formation of HCN since in previous studies it was found to be the major product containing the nitrogen during pyridine pyrolysis at higher temperatures (essentially 100% of the nitrogen appeared as HCN at 1100/sup 0/C). Because of the unreliability found in data from HCN chromatographic peak heights, the determinations are being done by wet chemical methods and these experiments are just underway. The oxidation of cyanogen has concentrated on a material balance. Using a one meter gas cell, infrared spectra of the products indicate that CO/sub 2/ is the only major oxidation product in the 950-1050/sup 0/C range. Small amounts of N/sub 2/O were found but no NO was observed; thus, it appears that most of the nitrogen from the reaction ends up in the elemental form. The significance of these observations to the overall project is that NO/sub x/ formation from fuel-nitrogen appears minor if fuel pyrolysis to CN type species takes place before oxidation. However, since fuel-nitrogen does contribute significantly to NO/sub x/ formation during coal combustion, the oxidizer must influence the products during the pyrolytic stage.

• Research Organization: Western Michigan Univ., Kalamazoo (USA). Dept. of Chemistry
• OSTI ID: 7099818
• Report Number(s): FE-2018-6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
02 PETROLEUM
025000 -- Petroleum-- Combustion
03 NATURAL GAS
034000 -- Natural Gas-- Combustion
04 OIL SHALES AND TAR SANDS
040500 -- Oil Shales & Tar Sands-- Properties & Composition
AZINES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMBUSTION
CRYOGENIC FLUIDS
CYANOGEN
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC ACIDS
KINETICS
MATERIAL BALANCE
NITRIC OXIDE
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PYRIDINE
PYRIDINES
PYROLYSIS
REACTION KINETICS
SPECTRA
THERMOCHEMICAL PROCESSES
YIELDS