Nitric oxide formation in pulverized coal flames. Final report

Technical Report · Fri Oct 01 00:00:00 EDT 1976

OSTI ID:7214417

Vogt, R A; Laurendeau, N M

To meet ever-increasing energy demands in the United States, greater utilization of our coal resources is required. However, coal combustion produces oxides of nitrogen (NOx) which present a health hazard. The main source of these emissions is the nitrogen that is chemically bound in the coal (1/2-2% by weight). This study represents a preliminary effort to elucidate the mechanism of fuel nitrogen conversion to NOx during coal oxidation. A literature review and physical model are presented. They indicate that the major influences on fuel NOx formation are oxygen concentration, fuel nitrogen content and combustion conditions (i.e. heating rate, temperature, pressure and residence time). A pulverized coal transport reactor to study low temperature coal oxidation has been constructed and successfully operated. Preliminary results indicate that considerable amounts of NOx may be formed at temperatures as low as 700/sup 0/C. At low temperatures (700-1100/sup 0/C) fuel NO formation is highly temperature dependent and exhibits a rapid increase near a critical temperature. Above this temperature, excess air conditions promote conversion efficiency.

• Research Organization: Purdue Univ., Lafayette, IN (USA). Combustion Lab.
• OSTI ID: 7214417
• Report Number(s): PB-263277; PURDU-CL-76-08
• 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 ANALYSIS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COMBUSTION
DESIGN
ENERGY SOURCES
FLAMES
FOSSIL FUELS
FUELS
FURNACES
LABORATORY EQUIPMENT
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION
TESTING
THERMOCHEMICAL PROCESSES
YIELDS