DESULFURIZATION OF ASSAM COAL BY CHLORINOLYSIS AND HYDROTHERMAL TECHNIQUES

Results of studies on desulphurization of Assam coal samples containing 2.8, 3.23 and 5.5% sulphur by chlorinolysis and hydrothermal techniques are reported. Chlorinolysis carried out in the absence of water followed by hydrolysis with water at 80-degrees-C for 2 h, resulted in less removal of organic sulphur. The role of water during chlorinolysis is explained by a modified mechanism. A mechanism for organic sulphur removal during hydrothermal treatment is also proposed.