Experimental research on present form of chlorine in coal

The concentrations of chlorine in 41 coal samples from China are determined by Ascaka-Volhad method.The result shows that Chinese coals are not chlorine-rich ones compared with those from other countries,which ranging commonly from 0.1% to 0.2%.Negative relationships have been obtained by carrying out studies on the relationship between chlorine content and coal rank,alkali metals.No relations are found between chlorine in coals with moisture and fluorine in coals.From the results,an association of chlorine with the organic fraction of coal has been inferred.