| 摘要 |
<p>Diffuser comprising a cylindrical body inside which a helical section is provided. At the base and at the top, a sparger and a distributor respectively are foreseen. Preferably a second sparger is foreseen at the top, around the distributor. Each sparger consists of a hopper having the major base provided with tongues that radially depart from its periphery. Distributor comprises a truncated-cone portion having the minor base made up of a conical element, openings being provided both in the conical element and in the lateral surface of the hopper. The diffuser is fixed to a suitable support by means of tie rods held on the protruding edge of the upper sparger.</p> |
