| 摘要 |
<p>A packed tower, in particular for the absorption of water or SO3 in sulfuric acid, includes a bed (8) of packings (9) held on a domed grid (7) through which the sulfuric acid charged from above trickles, a gas supply tube (5) provided in the lower region of the tower, a gas outlet provided above the bed, and an acid outlet (4) provided in the lower region of the tower. To reduce the corrosion, the domed grid (7) is held on an L-shaped ring (10) such that between the outside diameter of the domed grid (7) and the jacket (2) of the packed tower (1) a gap (15) is formed.</p> |
