WET-TYPE ELECTRIC DUST COLLECTION DEVICE AND DUST REMOVAL METHOD

摘要

A wet-type electric dust collection device and low-concentration SO3 mist containing, in which the wet-type electric dust collection device has an electrical field formation part in which a plurality of discharge electrodes are provided on opposing surfaces of a first electrode and second electrodes for forming a DC electrical field. The discharge electrodes of the first electrode and the discharge electrodes of the second electrodes generate corona discharges that are reversed in polarity relative to each other. The gas containing the SO3 mist and the dust is guided to the electrical field formation part without electrically charging the SO3 mist and the dust or spraying a dielectric in the gas, and while the gas flows between the electrodes, the corona discharges impart electric charges of alternately reversed polarity to the SO3 mist and the dust. The first electrode and the second electrodes collect the charged SO3 mist and dust.

主权项

1. A wet-type electric dust collection device for removing low-concentration SO3 mist and dust contained in a gas, the wet-type electric dust collection device comprising:
a first electrode and a second electrode that are arranged to oppose each other along a flow direction of the gas containing the SO3 mist and the dust and form a DC electrical field; and an electrical field formation part including a plurality of discharge portions that are arrayed and formed at predetermined intervals along the flow direction of the gas on opposing surfaces of the first electrode and the second electrode, wherein the discharge portions of the first electrode and the discharge portions of the second electrode alternately generate corona discharges, which are reversed in polarity relative to each other, in a direction orthogonal to the flow direction of the gas, and wherein electric charges of reversed polarity are alternately imparted to the SO3 mist and the dust, the gas is guided to the electrical field formation part without spraying a dielectric in the gas, and when the gas flows between the first electrode and the second electrode, the first electrode and the second electrode collect the SO3 mist and the dust electrically charged by the corona discharges.