Wet-cleaning electro-filter for exhaust gas cleaning, as...

B - Operations – Transporting – 03 – C

Patent

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Details

B03C 3/78 (2006.01) B03C 3/014 (2006.01) B03C 3/12 (2006.01) B03C 3/16 (2006.01)

Patent

CA 2744038

The invention relates to an electro-filter (1) for exhaust gas cleaning and/or heat recovery, particularly also for exhaust gas cleaning for the exhaust gases of biomass firings, in which the electro-filter (1) has a precipitation chamber (2) through which the exhaust gas is passed, whereby a charging device (6) for electrostatic charging of particles present in the exhaust gas is disposed in the region of the precipitation chamber (2) or adjacent to the precipitation chamber (2). In such an electro-filter (1), a precipitation device (12) that is electrostatically charged opposite to the charge of the particles, or is grounded, and has a large surface area in relation to its volume, is disposed in the region of the precipitation chamber (2), to interact with the particles, through which device the particles electrostatically charged by the charging device (6) flow, whereby a dispensing device (5) for cleaning fluid sprays the region of the precipitation device (12), at least periodically, and the cleaning fluid cleans away the particles deposited on the surface of the precipitation device (12).

L'invention concerne un électrofiltre (1) pour épurer des gaz d'échappement et/ou récupérer la chaleur, notamment pour épurer également les gaz d'échappement de combustions de biomasse. L'électrofiltre (1) comporte une chambre de séparation (2) à travers laquelle le gaz d'échappement est guidé, un dispositif de charge (6) destiné à charger électrostatiquement les particules se trouvant dans le gaz d'échappement étant disposé dans la région de la chambre de séparation (2) ou de manière adjacente à la chambre de séparation (2). Dans un tel électrofiltre (1), un dispositif de séparation (12) qui a une charge électrostatique inverse de la charge de particules ou est mis à la terre et qui a une grande surface par rapport à son volume pour interagir avec les particules est disposé dans la région de la chambre de séparation (2). Cette surface est parcourue par les particules électrostatiques chargées par le dispositif de charge (6). Un dispositif de distribution (5) pour le liquide de lavage pulvérise au moins périodiquement la région du dispositif de séparation (12) et le liquide de lavage lave les particules fixées à la surface du dispositif de séparation (12).

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