Abstract
In this paper, the desulfurization of LA (Lu,an) coal was carried out by combining the method of ultrasonic and microwave irradiation. The effect of microwave time and combination of ultrasonic and microwave irradiation on the desulfurization of LA coal was investigated. The results showed that the sulfur removal effect of microwave irradiation time is obvious. The removal rate of organic sulfur increased with the microwave irradiation time increased. The effect of ultrasonic before microwave irradiation on desulfurization was greater than simply microwave method. The sulphur form was investigated systematically using X-ray photoelectron spectroscopy (XPS). After microwave and ultrasonic co-enhanced oxidative desulfurization of coal, the content of sulfur in coal was decreased by the XPS analysis.
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