Field measurements on particle size distributions and emission characteristics of PM10 in a cement plant of China

摘要: Abstract The particle size distributions (PSDs) and the characteristics of particulate matter (PM) from cement plants are importance for air pollution control strategies. study focuses on PSDs emission PM10 in flue gas preheater hot out clinker cooler a plant equipped with conditioning tower, two raw mills, gravity settler fabric filters. A Dekati low pressure impactor (DLPI) cyclone was performed to sample at inlet/outlet above devices. outlet SP boiler inlet both present bi-modal distribution, fine mode 0.1–0.4 μm coarse 1.0–5.0 μm. emitted into atmosphere tri-modal 0.2–0.5/0.06–0.2 μm, middle 0.5–2.5/0.2–0.6 μm 5.0–10.0/3.0–6.0 μm. mass concentration PM2.5 increases by 17.74% mill due mechanical fragmentation flow transport. spraying cooling tower promote agglomeration growth particulates, reduce proportion 89.40 70.93%. factors PM10, PM1 0.017–0.031, 0.005–0.015 0.002–0.007 kg/t, respectively; while they 0.005, 0.003 0.001 air, respectively.