| 摘要 |
<p>PURPOSE:To eliminate the temporary lowering of dust collection efficiency and the damage of a filter material, by connecting a high voltage power source apparatuses to each upstream side and each downstream side separators put in meandering filter materials through a conductive material having resistance preventing the movement of charge. CONSTITUTION:When a dust containing gas is sent into from the inlet of a vessel frame in such a condition that DC high voltage is applied to an ionizing wire 30 and a separator 15, dust particles 47 are charged by corona discharge and, in a process wherein the gas containing the charged particles 47 is passed through a dust collecting part, most of the charged particles 47 are adhered to the surface of each separator 15 in the upstream side and removed from said gas. Subsequently, the gas 48 containing the residual charged particles 47 is passed through a filter material 14 in the shortest distance and the charged particles 47 are deposited on the surface of the filter material 14 in a porous form. In the next stage, the charged particles 47 generated into the filter material 14 are moved along electric lines of force gathered to the fiber of the filter material by an electric field applied between separtors 15, 16 and, therefore, the area collected by the fiber is greatly increased.</p> |
