Effect of Pyritic Sulfur and Mineral Matter on Organic Sulfur Removal from Coal
The perchloroethylene coal cleaning process uses perchloroethylene as the solvent to remove both organic and inorganic forms of sulfur without any significant loss to its calorific value. The process removes these forms of sulfur in two sequential unit steps. The objective of this investigation was to determine the exact sequence of operations in the Process. Hence, organosulfur was removed before and after depyriting and demineralizing the coal. The extent of total sulfur as well as organic sulfur removal were compared in both cases. It was found that the desulfurization is more efficient when organosulfur is extracted before pyritic sulfur and not vice versa, in the sequential removal of organic and inorganic forms of sulfur. The data presented in this paper reestablishes a fact that the mineral matter content in coal is quintessential to its organosulfur extractability.
P. Vishnubhatt et al., "Effect of Pyritic Sulfur and Mineral Matter on Organic Sulfur Removal from Coal," Fuel Science and Technology International, Taylor & Francis, Jan 1993.
The definitive version is available at http://dx.doi.org/10.1080/08843759308916107
Chemical and Biochemical Engineering
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