| 摘要 |
A distillation tray of the sieve type with a chordal weir or outlet has vapor passages therethrough. The density of vapor passages in the main liquid flow area immediately between the liquid inlet and the liquid outlet of the tray is higher than in the remaining area of the tray so that more vapor flow will be directed into the more active main liquid flow area of the tray, whereby the vapor leaving the tray from the main liquid flow area has substantially the same composition as the vapor leaving the tray from the other area. |
