| 摘要 |
<p>PURPOSE:To separate and to collect dust by filtration utilizing flocculating and electrical replusive effect for dust on the surface of bag filter decreasing pressure drop of the bag filter by providing an electrically charged part in a box body of the bag filter and by charging the dust preliminarily. CONSTITUTION:A bag filter 6 having an opening at its bottom end is housed in a cylindrical filter chamber 9. A discharge electrode 4 is provided to the external periphery of the cylindrical filter chamber 9 to form an electric charging chamber 7. The electric charging chamber 7 and the filter chamber 9 are arranged concentrically, and the bottom end part of the electric charging chamber 7 forms a dust collecting hopper 8, and a dust conveyor 11 is installed interposing a conveyor cover 12 in combination. The cylindrical filter chamber 9 is communicated with an exhaust port 10 of purified gas, and a duct 1 is, on one hand, provided in the tangential direction to the electric charging chamber above the cylindrical electric charging chamber 7. The dust-contg. gas 2 introduced through the duct is charged in the electric charging chamber receiving cyclone effect and is sucked by the bag filter 6 and filtered, and purified gas is recovered from the exhaust port 10.</p> |
