DISPOSITIF DE TRAITEMENT DE GAZ PAR CATALYSE, NOTAMMMENT POUR HOTTE DE FILTRATION

摘要

A catalytic treatment unit (10), especially for cooking fumes passing through a filtration hood, comprises at least one catalyst holder (11) and electrodes (13, 14) to generate a discharge plasma, and differs by having the electrodes extending into the plasma generation zone (12) before the catalyst holder in the direction of the gas flow (F). The electrodes have opposite polarities alternating in one row lying in a plane perpendicular to the gas flow, or in two rows a few millimetres apart. The unit can have a number of plasma generation zones and catalyst holders of different thicknesses and catalyst types.