Analysis of Formation Rates of Sulfur-Containing Gases during the Pyrolysis of Various Coals

To clarify the relation between organic sulfur distribution in coal and the emission of sulfur-containing gases, six Japanese standard coals, three Argonne premium coals, and one Chinese coal were pyrolyzed using a thermogravimetric analyzer-mass spectrometer (TG-MS) and a Curie-point pyrolyzer. The...

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Bibliographic Details
Published in:Energy & fuels 2001-05, Vol.15 (3), p.629-636
Main Authors: Miura, Kouichi, Mae, Kazuhiro, Shimada, Makoto, Minami, Hiroyuki
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
Solid fuel processing (coal, coke, brown coal, peat, wood, etc.)
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Summary:To clarify the relation between organic sulfur distribution in coal and the emission of sulfur-containing gases, six Japanese standard coals, three Argonne premium coals, and one Chinese coal were pyrolyzed using a thermogravimetric analyzer-mass spectrometer (TG-MS) and a Curie-point pyrolyzer. The changes in sulfur distributions in coal and chars were estimated by a modified controlled-atmosphere-programmed-temperature-oxidation (CAPTO) method. It was clarified that the aliphatic sulfur decomposed below 500 °C and that the aromatic sulfur decomposed at 400−700 °C, irrespective of coal type. The decomposition of thiophenic sulfur was strongly affected by coal type. Finally, the H2S formation rate and the decomposition rate of organic sulfur were analyzed using a new distributed activation energy model (DAEM).
ISSN:0887-0624
1520-5029
DOI:10.1021/ef000185v