Scope of application of fabric filters for the separation of particulate and gaseous pollutants from

Dipl.-Ing. Rüdiger Margraf, Dirk Band

According to the industrial emission guideline 2010/75/EU (IED), the condition for the approval and operation of production plants in the NE metal industry is the application of best available technology (BAT) for the observance of requested emission limit values. In this connection outstanding importance is given to the fabric filter. Beside a high-effective separation of particles and particulate heavy metals, fabric filters are also used for the separation of gaseous pollutants such as acid crude gas pollutants (HF, HCl, SOx, P2O2), heavy metals as e. g. Hg- and As-compounds as well as dioxins / furans. The separation of all components often takes place simultaneously in one stage. Component parts such as gas coolers and reactors are used in addition to optimise the separation efficiency for gaseous substances. In addition to a short description of different types of fabric filters, the following explications particularly provide remarks concerning additional measures for the efficient chemisorption and adsorption of gaseous substances.