Evaluation of NOx Control by Cyanuric Acid Injection in an Industrial-Scale Boiler

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Title Evaluation of NOx Control by Cyanuric Acid Injection in an Industrial-Scale Boiler
Creator Sarv, Hamid; Rodgers, Larry W.
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1989
Spatial Coverage presented at Short Hills, New Jersey
Abstract Feasibility of NO reduction by injecting cyanuric acid powder into an industrial-scale boiler was investigated. Significant NOx removal was observed ranging from 73% (at 2.2% excess 02' 169 PPM initial NOx' and 1260 K) to 80% (at 5.4% excess 02' 198 PPM initial NO, and 1303 K). Temperature appeared to be the most important parameter, in spite of the limitations in identifying its optimum value and perhaps achieving even higher NO reductions. For a fixed temperature and excess oxygen concentration, NOx decreased with increasing cyanuric acid feed rate, until a minimum was reached. Further increases in cyanuric acid actually reversed the trend, making the process less efficient. Particle size of the pulverized acid was also found to influence the process. Coarser particles gave higher NOx reductions when they were sprayed from the middle of the furnace. Finer powders were more effective near the end of the furnace, where temperatures were considerably lower. Regardless of the powder size, CO formation increased with increasing cyanuric acid feed rate at low to intermediate injection temperatures. At higher temperatures, cyanuric acid feed rate had little or no effect on CO emissions.
Type Text
Format application/pdf
Language eng
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Conversion Specifications Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician Cliodhna Davis
Metadata Cataloger Kendra Yates
ARK ark:/87278/s6xp77h2
Setname uu_afrc
Date Created 2012-04-20
Date Modified 2012-09-05
ID 5306
Reference URL https://collections.lib.utah.edu/ark:/87278/s6xp77h2