Field Studies on the Removal Characteristics of Particulate Matter and SOx in Ultra-Low Emission Coal-Fired Power Plant

In order to reduce the environmental smog caused by coal combustion, air pollution control devices have been widely used in coal-fired power plants, especially of wet flue gas desulfurization (WFGD) and electrostatic precipitator (WESP). this work, particulate matter with aerodynamic diameter less than 10 μm (PM10) sulfur oxides (SOx) studied a plant. The plant is equipped selective catalytic reduction, precipitator, WFGD, WESP. results show that PM10 removal efficiencies WFGD WESP are 54.34% 50.39%, respectively, overall efficiency 77.35%. effects on particle size distribution. After peak particles shifts from 1.62 0.95 μm, mass concentration fine 0.61 increases. WESP, 1.61 μm. differences due agglomeration growth small particles. SO3 increases after SCR, but has great influence SOx 96.56%. can remove SOx, 20.91%. final emission factors SO2, SO3, PM1, PM2.5 0.1597, 0.0450, 0.0154, 0.0267 0.0215 (kg · t−1), respectively. Compared research without ultra-low retrofit, reduced 1~2 orders magnitude, level pollutants greatly improved.