Determination of Total Sulfur in Coke Oven Gas by Ultraviolet Fluorescence Method with Pyrolysis Combustion

The sample of coke oven gas was collected with aluminum foil bag and gas displaced for 5 min. Under the pyrolysis temperature of 870℃ and oxygen flow rate of 2.0 L·min^-1, sulfur in the sample was completely burned into sulfur dioxide, and the intensity of sulfur dioxide was determined by ultraviolet fluorescence detector. A determination method of total sulfur in coke oven gas by ultraviolet fluorescence method was established. Linearity range of sulfur was found between 50.0 mg·m^-3 and 500.0 mg·m^-3 with detection limit (3s/k) of 5.32 mg·m^-3. The proposed method was applied to the analysis of the samples of coke oven gas, giving values of RSDs (n=11) of determined values in the range of 0.69%-1.4%. The proposed method was applied to the analysis of synthetic samples of standard gas, giving results in consistency with the theoretical values.