| 摘要 |
<p>A fume-filtration system comprises a plurality of filter modules (1, 2, 3, 4, 5) connected in parallel and aligned in a battery, in which a flow of fumes introduced into the modules passes through a filter column of stone chippings housed in the modules and forming a first free surface (23, 24) for the inlet of the fumes and a second free surface (25, 26) for the outlet of fumes, the column being renewed in counter-current to the fume flow either with continuous or intermittent renewal, the intermittent renewal being performed on a module temporarily excluded from the set of modules in parallel.</p> |
