| 摘要 |
<p>PURPOSE:To inhibit the deterioration of the corona discharge of a discharge electrode, by using a fish bone-shaped discharge electrode having the esp. strong discharge chemical action of corona discharge as said discharge electrode, and oxidatively removing carbon particles adherent to the top end of the discharge electrode by corona discharge. CONSTITUTION:DC high-voltage power sources 7, 32 for impressing DC high voltage between a flat dust-precipitating electrode 4 and corona discharge electrodes 3-3'' to form corona discharge at the latter electrodes are provided to bombard ions supplied by the corona discharge against fine particles introduced together with gas streams through gas inlets 11, 11' into a casing 10. Hence, the fine particles are intensively charged with electricity, separately collected on the electrode 4 by Coulomb's power and discharged ouside through outlets 41, 42 for discharging particles, while clarified gas is discharged outside through gas outlets 12, 12', 13, 13'. As said corona discharge electrodes, fish bone-shaped corona discharge electrodes 3-3'' formed by implanting the group 2 of many needle-shaped corona discharge electrodes to supporting bodies 1 composed of conductive bodies in predetermined intervals are provided in a manner such that the projecting directions from the supporting bodies 1 are in parallel with the electrode 4.</p> |
