Patent ID: 6267795
Filing Date: 2001-07-31
Classification: B01D,F28D,Y02A

Abstract:
A filter device for removing combustion gases and/or particulate matter in an air stream, the device comprising:a separation chamber for separating the air stream into a substantially liquid component and a substantially gas/particulate component, the separation chamber having upper and lower ends and an inlet near the lower end thereof for receiving under pressure the air stream containing combustion gases and/or particulate matter, a cooling member located between the upper and lower ends of the separation chamber for lowering the temperature of the air stream to form the substantially liquid component and the substantially gas/particulate component, a first outlet in the lower end of the separation chamber for discharge of the liquid component, and a second outlet in the upper end of the separation chamber for discharge of the air stream containing the gas/particulate component;a conveyance passage having first and second ends, the first end thereof being connected to the second outlet, the conveyance passage having associated therewith extractor means for removing from the separation chamber the gas/particulate component; anda filtering unit having an inlet connected to the second end of the conveyance passage for receiving the gas/particulate component from the second outlet of the separation chamber, the filtering unit having at least two concentrically arranged filter barriers each having different filtering characteristics and through which the gas/particulate component passes, the filter barriers being configured to catch at least a portion of the gas/particulate component.