A number of coal cleaning methods have been developed,which range from simple crushing and pulverizing to reduce inorganic sulfur,to extensive chemical treatment to reduce inorganic sulfur and a part of organic sulfur.However,an effective and economic process to remove finely disseminated inorganic sulfur and organic sulfur remains to be found.Recently, electrochemical desulfurization,as an economic,lower cost and milder sulfur removal method, has received more attention.Usually,the high sulfur coal w...