Additive Injection for NOx Control

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Title Additive Injection for NOx Control
Creator Mangal, R.; Mozes, M.; Gaikwad, R.; Thampi, R.; MacDonald, D.
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1989
Spatial Coverage presented at Short Hills, New Jersey
Abstract Injecting aqueous solutions of nitrogen-based additives into the furnace for reducing NOx emissions from coal-fired utility boilers has been studied at Ontario Hydro's 640 MJ/h Combustion Research Facility under conditions simulating full scale operation. Three additives were tested: urea, ammonia and ammonium carbonate. NOx reduction was found to be a function of injection temperature and mode of injection, additive stoichiometry, additive concentration and initial NOx concentration. Under optimized operating conditions while burning a 1.7% S eastern US bituminous coal and injecting urea cocurrently with the flue gas at a temperature of 1100°C, up to 90% NOx reduction can be achieved at an additive/NOx stoichiometry of 1.7. Under similar operating conditions, 84% removal was achieved with ammonia and 80% with ammonium carbonate. Ash resistivities and the performance of the electrostatic precipitator are not affected by in-furnace injection of these sorbents.
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
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/s6jh3pqg
Setname uu_afrc
Date Created 2012-04-20
Date Modified 2012-09-05
ID 5359
Reference URL https://collections.lib.utah.edu/ark:/87278/s6jh3pqg