Supercritical Extraction of Organosulfur from Coal Using Acetone-Water Mixtures
Binary mixtures of acetone and water at their supercritical conditions have been investigated for their ability to remove organic sulfur from high sulfur Midwestern coals. The reduction of organic sulfur from Ohio 5/6 and Indiana 5 coals has been as high as 61% (based on a BTU basis) The experiments have been carried out following a statistical experimental design and the optimal process conditions and discerning characteristics of the process have been identified. The solvent composition and the extraction conditions can be tailored in such a way as to selectively remove sulfur and further increase the calorific value of the treated coal.
F. O. Azzam et al., "Supercritical Extraction of Organosulfur from Coal Using Acetone-Water Mixtures," Fuel Science and Technology International, Taylor & Francis, Jan 1992.
The definitive version is available at https://doi.org/10.1080/08843759208915995
Chemical and Biochemical Engineering
Article - Journal
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