Abstract
AbstractThis study aims to develop an original filtration device based on a trickle bed technology which permits to treat high gas flow rates while maintaining a constant pressure drop by re‐entraining continuously the particles trapped on collectors, thanks to a water film flow. Good results have been obtained for an air flow rate of 20 m3/hr, a liquid flow rate of 12 L/min and using glass beads of 5‐mm diameter as collectors. Experimental results showed a good mass efficiency (89%) and a pressure drop which stabilizes under clogging unlike that of a granular bed which increases during the clogging. The experiments certifying a stable pressure drop during a few tens of hours let us suppose that these tendencies should be extrapolated to much larger times.
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