| 摘要 |
<p>The device described comprises a packet of corrugated lamellae (3), each arranged in a general vertical plane, said corrugations being oblique and descending in opposite directions from one lamella (3) to the next. Each dip in a wave (5) has a lower end which protrudes laterally and has an obstacle (7) which projects in the vicinity of said lower end. Applications: air distillation columns.</p> |
