Control of NOx and particulate emissions from spreader-stokers fired with hogged wood

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Publication Type Journal Article
School or College College of Engineering
Department Chemical Engineering
Creator Pershing, David W.
Other Author Munro, J. M.; Bradshaw, F. W.
Title Control of NOx and particulate emissions from spreader-stokers fired with hogged wood
Date 1987
Description The formation and emission of nitrogen oxides and particulate carry-over were studied from spreader-stoker combustion of hogged Douglas-fir, with a focus on optimizing the combustion conditions in each of the two distinct combustion zones, the bed phase and the suspension phase local oxygen availability was the controlling parameter for nitric oxide formation. Minimum nitric oxide emissions were found when local air:fuel stoichiometric ratios were held at 0.70-0.85, with emissions reduced as much as 39%. Long first-stage residence times allowed intermediate nitrogenous species to decay to molecular nitrogen, if there was sufficient oxygen for first-stage formation of nitric oxide. Entrainment of large particulates was a function of furnace gas velocities in the bed zone. Operation of the furnace at low stoichiometric ratios (fuel rich) in the bed zone reduced these gas velocities and thus reduced particulate emissions.
Type Text
Publisher Technical Association of the Pulp and Paper Industry
First Page 133
Last Page 137
Subject Chemical analysis; Combustion; Emission; Engineering; Environmental control; Fuels; Nitrogen compounds; Particulates; NOx; Hogged wood
Subject LCSH Nitrogen oxides -- Environmental aspects; Furnaces -- Environmental aspects; Wood waste -- Burning; Air -- Pollution
Language eng
Bibliographic Citation Munro, J. M., Bradshaw, F. W., & Pershing, D. W. (1987). Control of NOx and particulate emissions from spreader-stokers fired with hogged wood. TAPPI Journal, 70, June, 133-7.
Rights Management (c)J. M. Munro, F. W. Bradshaw, and D. W. Pershing
Format Medium application/pdf
Format Extent 419,265 bytes
Identifier ir-main,324
ARK ark:/87278/s60p1hbg
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 704220
Reference URL https://collections.lib.utah.edu/ark:/87278/s60p1hbg
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