Method and device for lowering the polluting components of exhaust smokes in a combustion heat generator

摘要

A device for lowering the polluting components of the smokes produced by combustion heat generators comprising a vertical development duct (23) arranged as a by-pass of a portion of the exhaust duct, a vortex filter (26) , mounted on the by-pass duct for intercepting the smokes for purifying them from polluting solid particles; an electric resistor (40) mounted on said by-pass duct and arranged downstream of the filter; a grid (41) consisting of multiple layers of metal meshes mounted on the by-pass duct for intercepting the smokes and arranged downstream of the electric resistor; a catalyst (42) mounted on the by-pass duct for intercepting the smokes and arranged downstream of the grid; suction means (43) , for circulating the smokes into the by-pass duct or in the exhaust duct . The electric resistor can be actuated for preheating the catalyst and for burning the particles laid on the grid or the particles of unburnt products initially present in the smokes.