Selective Removal of Organic Sulfur from Coal by Perchloroethylene Extraction
Desulfurization of coal involves the removal of both the inorganic and organic forms of sulfur. Several physical methods are available for the removal of inorganic sulfur which is normally represented by pyritic and sulfatic sulfur. Removal of organic sulfur requires the use of chemical cleaning methods. This paper presents the results of an organic sulfur removal technique which employs an organic solvent. This desulfurization technique is selective enough to reject organic sulfur without significantly reducing the calorific value of the treated coal. The sulfur containing organic species in the liquid product from the desulfurization procedure have been completely characterized using GC/MS techniques. These results provide further insights into the nature of the sulfur forms in the parent coal as well as the metamorphism of sulfur species in the coal, and the selective nature of the desulfurization process.
S. Lee et al., "Selective Removal of Organic Sulfur from Coal by Perchloroethylene Extraction," Fuel Science and Technology International, Taylor & Francis, Jan 1989.
The definitive version is available at http://dx.doi.org/10.1080/08843758908962251
Chemical and Biochemical Engineering
Article - Journal
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