Patent ID: 9550189
Date: 2017-01-24
CPC Classifications: B03C,G03G

Claim:
1. A method for electrostatic separation of fine dust particles from a gas containing fine dust particles in a housing having an inlet side and an outlet side and a direction of flow defined between the inlet side and the outlet side, an electrode at the inlet side, an electrode at the outlet side, non-conductive perforated plates arranged between the electrode at the inlet side and the electrode at the outlet side and transverse to the direction of flow, the perforated plates each having an inflow side and an outflow side, the perforated plates comprising openings for the gas flow and deposition surfaces on the inflow and outflow side for fine dust particles, wherein the openings of adjacent perforated plates are arranged staggered in relation to each other in the direction of flow, the method comprising: establishing an electric field between the electrode at the inlet side of the housing and the electrode at the outlet side of the housing, wherein flowing said gas along a direction of flow between the inlet side of the housing and the outlet side of the housing, electrostatically depositing fine charged dust particles on the inflow and outflow sides of the perforated plates, wherein wherein the gas flow which emerges from the openings of a non-conductive perforated plates ( and wherein non-charged fine dust particles or fine dust particles which passed through the last perforated plate are charged in an ionization chamber between the last perforated plate and the electrode at the outlet side and deposited on the outflow side deposition surface of the last perforated plate.