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Facts at your Fingertips: Removal of Particulate Matter from Industrial Processes

By Scott Jenkins, Chemical Engineering magazine |

Controlling and reducing particulate matter pollution from industrial operations is a key environmental and human health objective. In chemical process industries (CPI) facilities, airborne particulate matter can result from combustion of fuels, or from process operations, such as dust from solids handling. Coal- and wood-fired boilers, and cement kilns are some examples of applications with high particulate levels upstream of the air-pollution control systems. This one-page reference outlines equipment and operational considerations for capturing particulate matter from industrial sources. Particle loading in fluegas Particle loading in the fluegas from any industrial process is measured in grains/dry std. ft3 (grains/dscf) or mg/dry std. m3 (mg/dscm) or mg/normal m3. The particle loading in the gas will vary widely depending upon a number of factors, including the gas velocity, particle size, particle density and the nature of the upstream process and feedstock. The smaller the particle, the more easily it is carried by the fluegas, even at relatively low gas velocity. As the gas velocity increases, larger particles can be carried by the fluegas stream, and the number of particles of all sizes that can be carried increases. Removing…
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