Sulphur pollutant formation during coal combustion

A laboratory-scale pulverized coal combustor was used to determine the effects of secondary air swirl, stoichiometric ratio ( O 2 fuel ) , and coal type on the formation and reaction of sulphur pollutants (SO 2, H 2S, COS and CS 2). Detailed local measurements within the reactor were obtained by ana...

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Bibliographic Details
Published in:Fuel (Guildford) 1989-03, Vol.68 (3), p.346-353
Main Authors: Zaugg, Steven D., Blackham, Angus U., Hedman, Paul O., Smoot, L.Douglas
Format: Article
Language:English
Subjects:
Air pollution caused by fuel industries
Analysis methods
Applied sciences
Atmospheric pollution
combustion of coal
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Metering. Control
Pollution
sulphur
sulphur dioxide
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Summary:A laboratory-scale pulverized coal combustor was used to determine the effects of secondary air swirl, stoichiometric ratio ( O 2 fuel ) , and coal type on the formation and reaction of sulphur pollutants (SO 2, H 2S, COS and CS 2). Detailed local measurements within the reactor were obtained by analysing solid-liquid-gas samples collected with a water-quenched probe. Increasing the stoichiometric ratio increased sulphur conversion and SO 2 levels, and decreased H 2S, COS, and CS 2 levels. Swirl of secondary combustion air had a pronounced effect on the distribution of sulphur species formed at an O 2-coal stoichiometric ratio of 0.8, but had very little effect at stoichiometric ratios of 0.57 and 1.17. Combustion of a bituminous coal produced more SO 2 and less H 2S, COS, and CS 2 compared with a subbituminous coal.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(89)90100-2