Competitive formation of NO and N/sub 2/ from both the emission sources of NH/sub 3/ and coal char-bound nitrogen compounds during the combustion of coal
Conference
·
OSTI ID:6452236
The objective of this study is to basically elucidate a kinetic mechanism of formation of N/sub 2/ as well as NO through coal-bound nitrogen compounds during the combustion of coal. Two series of fundamental researches are conducted: the homogeneous gas-phase formation of NO and N2 through NH/sub 3/ as a simulated model of volatile nitrogen compounds (volatile-N) evolved from coal investigated in a mixture of NH/sub 3/, H/sub 2/, O/sub 2/, and Ar in a tubular flow reactor; and a mathematical model proposed for the competitive formation of NO and N/sub 2/ from both the emission sources of NH/sub 3/ and coal char-bound nitrogen (char-N) during the heterogeneous packed-bed combustion of coal-char particles under a NH/sub 3//O/sub 2//Ar gas stream. The predictions of the proposed model are compared favorably with the experimental data for the transient formation and reduction of CO/sub 2/, CO, and NH/sub 3/, as well as of N/sub 2/ and NO. In addition, the relative contributions of volatile-NO (from volatile-N) and char-NO (from char-N) to total-NO emissions, and of volatile-N/sub 2/ and char-N/sub 2/ to total-N/sub 2/ emissions are revealed both theoretically and experimentally.
- Research Organization:
- Nagoya Univ., Nagoya, 464
- OSTI ID:
- 6452236
- Report Number(s):
- CONF-8610180-
- Country of Publication:
- United States
- Language:
- English
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· International Chemical Engineering
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OSTI ID:43108
Related Subjects
01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
014000* -- Coal
Lignite
& Peat-- Combustion
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
AMMONIA
ARGON
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
ELEMENTS
EMISSION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL-AIR RATIO
FUELS
GASES
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
KINETICS
MATERIALS
MATTER
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PACKED BED
PYROLYSIS PRODUCTS
RARE GASES
REACTION KINETICS
THERMOCHEMICAL PROCESSES
VOLATILE MATTER
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
014000* -- Coal
Lignite
& Peat-- Combustion
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
AMMONIA
ARGON
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
ELEMENTS
EMISSION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL-AIR RATIO
FUELS
GASES
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
KINETICS
MATERIALS
MATTER
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PACKED BED
PYROLYSIS PRODUCTS
RARE GASES
REACTION KINETICS
THERMOCHEMICAL PROCESSES
VOLATILE MATTER