Coal processing: NO/sub x/ formation during gas combustion

Journal Article · Sun Aug 01 04:00:00 EDT 1976 · Chem. Eng. Prog.; (United States)

OSTI ID:7336537

Lisauskas, R A; Johnson, S A

The overall conversion of coal nitrogen to NO/sub x/ in a gasification/combustion process was significantly less than that which occurs in the direct burning of pulverized coal. These test results indicate that it was smaller by about a factor of two. NO/sub x/ emissions due to the fixation of atmospheric nitrogen from the combustion of low Btu gas were observed to be between 90 and 140 ppM for both diffusion and pre-mixed flames. NO/sub x/ emissions were found to be a direct function of both furnace excess oxygen and measured amounts of NH/sub 3/ in the fuel gas. In the results reported, the conversion of NH/sub 3/ to NO/sub x/ contributed between 60 to 180 ppM to the total level of emissions. The conversion efficiency of NH/sub 3/ to NO/sub x/ varied inversely with NH/sub 3/ concentration to the burner. At low NH/sub 3/ concentrations (0 to 2000 ppM) the conversion of NH/sub 3/ to NO/sub x/ in a laboratory premixed flame was approximately twice that observed in a diffusion flame.

• Research Organization: Riley Stoker Corp., Worcester, MA
• OSTI ID: 7336537
• Journal Information: Chem. Eng. Prog.; (United States), Journal Name: Chem. Eng. Prog.; (United States) Vol. 72:8; ISSN CEPRA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
014000 -- Coal
Lignite
& Peat-- Combustion
AIR POLLUTION
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
COMBUSTION
ENERGY SOURCES
FLAMES
FOSSIL FUELS
FUELS
GASIFICATION
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SYNTHESIS
YIELDS