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World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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The effects of morphological changes and mineral matter on h2s evolution during coal pyrolysis

Mondragon, F. and Jaramillo, A. and Saldarriga, F. and Quintero, G. and Fernandez, J. and Ruiz, W. and Hall, P.J. (1999) The effects of morphological changes and mineral matter on h2s evolution during coal pyrolysis. Fuel, 78 (15). pp. 1841-1846.

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Abstract

The H2S release profiles of five important Colombian coals have been monitored using temperature programmed pyrolysis. It was found that there was no correlation between the amount of H2S and the sulphur content of the original coals. Coals which had been treated to remove all of the mineral matter and inorganic sulphur showed a good correlation with the free swelling index of the coals. This was explained by the physical trapping of H2S in closed porosity formed during pyrolysis. A similar result was found for demineralised coals with pyrite present. The H2S for untreated coals showed no systematic variation with rank, the coal sulphur content or free swelling index. This was because certain coals were rich in finely dispersed calcium which could chemically prevent H2S release.