不同助剂下的炼焦煤微波脱硫试验研究

he effect of different desulfurizers, i.e. HCl、NaOH、oxidizing agent (mixed by acetic acid and hydrogen peroxide)、reduceing agent (HI) and organic reagent (n-propyl alcohol、tetrahydronaphthalene、tetrachloroethylene), on mcrowave desulfurization of coking coal in different irradiation time was studied using the concentrate with high organic sulfur obtained from Xinyu and Gedui coal mine, Shanxi province.The results showed that HCl had little effect on sulfur removal with microwave irradiation.Alkaline assistant (NaOH) had good desulfurization only under the condition of melting, and the sulfur content of coal sample could decrease by 39.14% and 40.32% separately. The maximum desulphurization of mixed solution (acetic acid and hydrogen peroxide)was achieved in 2 min with the decrease of sulfur content by 13.16% and 24.11%，respectively. The sulfur removal could be obtained with 20.72% and 36.76% of total sulfur for two coal samples by HI，respectively. Among organic assistants, the better effects, 10.53% and 11.07%, of Xinyu coal and Gedui coal samples on microwave desulfurization were achieved by tetrahydronaphthalene and tetrachloroethylene, respectively.