Formation and control of NO emissions from coal-fired spreader-stoker boilers

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Publication Type Journal Article
School or College College of Engineering
Department Chemical Engineering
Creator Pershing, David W.
Other Author Starley, G. P.; Slaughter, D. M.; Munro, J. M.; Martin, G. B.
Title Formation and control of NO emissions from coal-fired spreader-stoker boilers
Date 1983
Description Stoker coal-fired furnaces are significant in terms of coal consumption and environmental impact; however, they have received little research attention. This paper describes the results of a study on the formation and control of nitrogen oxides in coal-fired spreader-stoker systems. Three scales of experimental equipment were used to define the evolution and oxidation of fuel nitrogen in the fuel suspension phase, the conversion of fuel nitrogen during fixed-bed combustion, and the coupling between the two combustion phases. The results indicate that NO emissions from spreader-stoker-fired coal furnaces are the result of relatively high conversions of fuel nitrogen evolved from particles less than 0.1 inches in the suspension phase and low conversion of fuel nitrogen during the bed combustion. In the suspension phase, nitrogen is evolved at approximately the same rate as carbon is oxidized. Local oxygen availability is the primary control parameter for both phases of the combustion. Minimum overall fuel nitrogen conversions of 6 percent were achieved in the pilot scale facility by controlling the stoichiometry in both combustion zones.
Type Text
Publisher Combustion Institute
First Page 1311
Last Page 1318
Subject Stoker coal-fired furnaces
Subject LCSH Coal-fired furnaces; Coal-fired furnaces -- Environmental aspects; Nitrogen oxides; Coal -- Combustion
Language eng
Bibliographic Citation Starley, G. P., Slaughter, D. M., Munro, J. M., Pershing, D. W., & Martin, G. B. (1983). Formation and control of NO emissions from coal-fired spreader-stoker boilers. Nineteenth Symposium (International) on Combustion, Pittsburgh, PA, 1311-8.
Rights Management (c)Combustion Institute
Format Medium application/pdf
Format Extent 4,971,199 bytes
Identifier ir-main,778
ARK ark:/87278/s6n594jc
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 703104
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