| 摘要 |
The tower comprises an exchange section (5,9,10,11) defined between an upper liquid dispenser (4,6,7,8) and a lower fluid input/output (21,23) or a lower liquid dispenser (7,8). This exchange section comprises an upper section (5A,9A,10A,11A) and under it another section (5B,9B,10B,11B) of the current type. The upper packed section comprises a packed module which has a number of transfer unit less than that of a packed section of the current packed section of the same exchange section. |
