| 摘要 |
The present invention has to do with an innovative internal structure of a fractionating column (1)consisting in groups of fractionating trays wherein the upper trays lay on the lowest tray of the group, which is only tray of the group supported by the column wall. Preferably, the downcomers (13) or disengaging plates of the upper tray lay on the downcomers surfaces (13) of the next lower tray. Only the bottom tray is leant upon by a ring (12) fixed to the column.
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