Air separator

cycloneparticledry

1. Type of technology Dry collection. 2. Contaminants which can be removed Dusts in general. 3. Emission limits possible Collection efficiency very much depends on the particle size and specific gravity of the dusts to be handled. Normally it lies between 85 and 95%. 4. Description of the equipment and/or process These cyclone separators are suitable only for dusts with specific gravity greater than 300 kg/m3 with fairly coarse particles (more than 10 micron for dusts with specific gravity greater than 1000-1500 kg/m3 and more than 50 micron for dusts specific gravity exceeding 500 kg/m3), present in the air in fairly high concentrations (a few grams per m3.). Collection efficiencies of the cyclones can range between 85% and 95%. When very high collection efficiencies are required, the cyclones serve merely as precleaners to more efficient final filters. Where there are very high concentrations of dusts it is always useful to install a cyclone for precleaning in order to obtain appreciable reduction in the dust load sent to the final filter, as well as to increase the dust collection efficiency and to avoid hazardous plugging in the more efficient filter which could cause trouble to the entire plant. Such case is typical of pneumatic conveyors where there are extremely high dust concentrations in the air and where sometimes just the cyclone is sufficient to obtain an acceptable collection efficiency.