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In almost all flue gas cleaning systems installed at WtE-plants, the fabric filters are central components. A good example for this is the conditioned dry sorption process which is currently preferentially used in Europe. Within the filter not only the particles and the particulate heavy metals are separated from the gas flow, but also all reaction products resulting from the separation of gaseous pollutants such as HF, HCl, SOx, heavy metals and in this respect particularly Hg as well as PCDD/PCDF. In addition to this the fabric filter constitutes an excellent reaction chamber with high additive powder density in the filter cake.
High-efficient sorption technologies are often working with a high re-circulation rate of particles separated at the filter fabric and re-introduced in an upstream installed reactor. Such procedures request a very high efficiency in the range of > 99.9 percent removal rate. In the following the objectives of the fabric filter in WtE-plants are explained. Important aspects regarding design and construction of fabric filter will be considered.
|Copyright:||© TK Verlag - Fachverlag für Kreislaufwirtschaft|
|Source:||Waste Management, Volume 6 (September 2016)|
|Autor:||Dipl.-Ing. Rüdiger Margraf|
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