Fundamentals of nitric oxide formation in fossil fuel combustion. Final report, June 1975-June 1981

Technical Report · Sat Mar 01 04:00:00 EST 1986

OSTI ID:6030008

Houser, T; McCarville, M E

The rates of and products from the pyrolysis of pyridine and from oxidations of pyridine, cyanogen and HCN were determined using an atmospheric pressure flow system equipped with a Vycor, stirred-flow reactor to obtain differential rate data. On-stream mass spectrometric and gas chromatographic monitoring of the concentrations of products and reactants as well as chemiluminescent (for nitrogen oxides) and specific ion electrode (for cyanide and ammonia) measurements were used to obtain the data. Rate equations were determined for the pyrolysis of pyridine in the range of 875 to 1050/sup 0/C and for the oxidations of pyridine (675 to 775/sup 0/C), HCN (750 to 825/sup 0/C) and cyanogen (950 to 1000/sup 0/C). The products from the oxidations were determined over somewhat larger temperature ranges. At the dilute concentrations used in this study NO/sub x/ was produced only with lean mixture ratios and at the relatively higher temperatures and/or concentrations. The transition from negligible amounts of NO/sub x/ produced at the lower temperatures and/or concentrations to the formation of significant NO/sub x/ yields appears to be sudden rather than gradual, indicating a rapid shift in mechanism requiring threshold conditions to be initiated. 44 refs., 21 tabs.

• Research Organization: Western Michigan Univ., Kalamazoo (USA). Dept. of Chemistry
• DOE Contract Number: AC21-75ET10593
• OSTI ID: 6030008
• Report Number(s): DOE/ET/10593-T3; FE-2018-21; ON: DE86007468
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION
AMMONIA
AZINES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMILUMINESCENCE
CHROMATOGRAPHY
COAL
COMBUSTION
COMBUSTION PRODUCTS
CYANIDES
CYANOGEN
DATA
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCYANIC ACID
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
ION SELECTIVE ELECTRODE ANALYSIS
KINETICS
LUMINESCENCE
MASS SPECTROSCOPY
MATERIALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POWER PLANTS
PYRIDINE
PYRIDINES
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION INTERMEDIATES
REACTION KINETICS
SEPARATION PROCESSES
SPECTROSCOPY
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES