Selective Removal of Organic Sulfur from Coal by Trichloroethane Extraction
Desulfurization of coal involves removal of both organic and inorganic forms of sulfur. In this paper, the process feasibility of organic desulfurization of coal using 1,1,1-trichloroethane (TCA) as the solvent, is established. Sulfur solubility curve in tnchloroethane was obtained. The process conditions of this novel process were critically assessed. From the solubility curve it was concluded that the process should be carried out at or near the normal boiling point of the solvent. Comparisons between the TCA extraction and the perchloroeihylene (PCE) process have been presented. Since the boiling point of tricbloroethane is quite low, the process conditions are very mild in comparision to the PCE process. It was found that the TCA process is capable of removing organosulfur from coal more selectively than the PCE process. The sulfur containing organic species in the extract obtained from
S. Lee et al., "Selective Removal of Organic Sulfur from Coal by Trichloroethane Extraction," Fuel Science and Technology International, Taylor & Francis, Jan 1994.
The definitive version is available at https://doi.org/10.1080/08843759408916176
Chemical and Biochemical Engineering
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