air protection with electric filters
The history of industrial waste gas treatment is briefly described. Comparative characteristics of cyclone-type treatment machinery and different types of filters are presented with special attention to electric filters. At present, single-zone EF are mainly used for treating of huge volumes of gases. However, EF employment for treating smaller volumes, such as diesel or plasma-arc metal cutting exhausts, gradually increases. Experiments performed at ZAO Kondor-Eko suggest that EF may be used for treating carburator engine exhausts at temperatures below dew-point. New generation EF are able to ensure output dustiness of thermal power plants exhausts as low as 20 to 60 mg/m3, which is closed to fabric filter performance. Prospects for further elaboration of the electrostatic approaches to gaseous industrial wastes treatment are outlined.