Pollutant control through staged combustion of pulverized coal. Final report, May-October, 1978

Technical Report · Tue May 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/5751349· OSTI ID:5751349

Wendt, J. O.L.; Glass, J. W.

Pulverized fuel was burned in a 2 kg/hr aerodynamically well-defined plane flame combustor, and the resulting time resolved profiles of CO/sub 2/, CO, O/sub 2/ and NO were measured. In this final report on Contract E 49-18-1817 the influence of pulverized fuel composition on NO formation mechanisms is emphasized, with particular stress on the role of coal volatile content. The latter quantity was varied by burning first an FMC char with 3.6% Volatile Matter, then an IGT char with 13.6% Volatile Matter and lastly a series of various coals comprising a lignite, a subbituminous coal, and three bituminous coals. These fuels were investigated under fuel rich and staged combustion conditions. Under staged combustion, second stage NO was found to be strongly influenced by the amount of first stage volatile nitrogen carryover. The latter quantity depended on the first stage fuel richness and on the amount of volatiles in the coal. Under fuel rich conditions the NO profile was controlled by the fuel nitrogen volatility relative to the volatility of the non-nitrogeneous combustibles in the coal. A series of tests on one coal showed that the observed decay of NO in the first fuel rich stage could be simply correlated with temperature. This latter result implies that a high heat removal rate in the first stage of a staged combustion process will lead to minimum NO emissions after staging.

• Research Organization: Arizona Univ., Tucson (USA). Dept. of Chemical Engineering
• OSTI ID: 5751349
• Report Number(s): FE-1817-6
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
014000 -- Coal
Lignite
& Peat-- Combustion
AIR POLLUTION CONTROL
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COAL FINES
COMBUSTION
ENERGY SOURCES
FOSSIL FUELS
FUEL-AIR RATIO
FUELS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PYROLYSIS PRODUCTS
TEST FACILITIES
THERMOCHEMICAL PROCESSES
VOLATILE MATTER
YIELDS