| 摘要 |
In a plate tower type apparatus such as a distillation tower, rectification tower or absorption tower for bringing vapor into contact with liquid to transfer materials between vapor and liquid, and improvement which comprises making the height of both ends of a weir provided on the edge of each plate higher than the height of the middle portion thereof by 1.2 times or more than that so as to avoid deterioration of performances when this apparatus is slantwise shaken in the case of, for example, being installed on a sea-floating type marine structure. <IMAGE>
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