Experimental study on removal of sulfur in coal under ultrasonic

In this paper,the effective factors and their optimal conditions of Shanxi coking coal desulfurization with ultrasound were studied under the condition of adding additives CH₃COOH and H₂O₂.The effects of coal particle sizes,ultrasonic power,additives ratio,solid-liquid ratio and treating time on the coal desulfurization were investigated.Then the optimum desulfurization conditions were determined.The results showed that:the decrease in desulfurization rate of total and organic sulfur was 19.27% and 16.86% separately under the coal particle size of 0.125~0.074 mm,the ultrasonic power of 600 W,the volume ratio (CH₃COOH/H₂O₂) of 1∶1,the solid-liquid ratio of 1∶14.8 and the treating time of 10min.