Removal of Organic Sulfur in Two Coals in Microwave and Ultrasonic Co-Enhanced Oxidative Process

Zhao Ting Pu; Jie Mi; Jian Kang

doi:10.4028/www.scientific.net/AMR.781-784.923

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 781-784Removal of Organic Sulfur in Two Coals in...

Removal of Organic Sulfur in Two Coals in Microwave and Ultrasonic Co-Enhanced Oxidative Process

Abstract:

Microwave heating has been used in desulfurization of coal. Removal of organic sulfur and organic sulfur forms alterations of Xishan (XS) coal and Yunnan (YN) coal was investigated under microwave and ultrasonic irradiation. The results showed the optimum conditions for desulfurization were 50 min and 560 W for microwave and ultrasound for both coals. The desulfurization rate was maximum 23.53% for XS coal and 76.58% for YN coal. The effect of combining microwave and ultrasonic irradiation on desulfurization was stronger than simple microwave irradiation. The content of sulphone sulfur in coal was increased from the XPS after microwave and ultrasonic co-enhanced oxidative desulfurization.