微波辐照下煤中噻吩类物质的氧化脱除规律

oal desulfurization by microwave radiation is a new method, however, the variation and migration rules of organic sulfur in coal have always been a difficulty during the process of coal desulfurization by microwave radiation. In this paper, the reaction rule and mechanism of thiophene matters in coal under the microwave condition were studied, H2O2/organic acids system as the oxidant and the solution that DBT dissolved in n-octane as model sulfur compound of coal. The various organic acids, the ratio of H2O2/acids, the amount of oxidant, microwave power, reaction time and temperature on the oxidative desulfurization effect were researched and analyzed in detail. The experimental results show that: H2O2/HCOOH oxidation effect is better than H2O2/CH3COOH's; the DBT oxidation product is dibenzothiophene sulfone; the DBT removal rate can reaches 95.4% under the optimal conditions(the microwave power is 400 w, the reaction time is 60 s, V (model) : V (oxide) = 4:1, V (H2O2) : V (HCOOH) = 1:1).