[Removal of SO2 from flue gas by water vapor DC corona discharge].
The influence of several factors on removal rate of SO2 from flue gas in unsaturated water vapor DC corona discharge was researched. Furthermore, the experiments of the removal rate of SO2 in pulsed discharge increased by water vapor DC corona discharge plasma were conducted. The experiment system is supplied with multi-nozzle-plate electrodes and the flow of simulated flue gas is under 70 m3/h. The results show that removal rate of SO2 can be improved by increasing the concentration of water vapor, intensity of electric field or decreasing flow of simulated flue gas. In unsaturated water vapor DC corona discharge, removal rate of SO2 can be improved by 10%, when NH3 is added as NH3 and SO2 is in a mole ratio of two to one, it can reach 60%. The removal rate of SO2 can be increased by 5% in pulsed corona discharge and reach above 90%.
Sun
Ming
M
Division of Basic Courses, Shanghai Maritime University, Shanghai 200135, China.
Wu
Yan
Y
D000393:Air Pollutants / Q000032:analysis / Q000302:isolation & purification*; D004566:Electrodes; D055590:Electromagnetic Phenomena / Q000379:methods; D017665:Hydroxyl Radical / Q000737:chemistry; D007220:Industrial Waste / Q000032:analysis*; D009330:Nebulizers and Vaporizers; D013458:Sulfur Dioxide / Q000032:analysis / Q000302:isolation & purification*; D018505:Waste Management / Q000379:methods*
D000393:Air Pollutants; D007220:Industrial Waste; D013458:Sulfur Dioxide; D017665:Hydroxyl Radical