| abstract |
The present invention relates to a distillation apparatus comprising a system of columns (1, 3) and means for carrying the stream (7, 9) to be separated to one column (1) of said system. According to the present invention, in the operating segment, the speed ratio is less than or equal to the speed ratio threshold (the speed ratio is the ratio between the actual reflux speed and the minimum reflux speed of the segment) and / or the load ratio is If the load ratio is greater than or equal to the threshold (where the load ratio is the ratio between the downflow of liquid and the cross-sectional area of the segment), at least one segment (A, D) of a column will have an unmodified interface. A structured packing comprising a pack having the same. Further, at least one segment (C, G) of the tower designed to operate at a speed ratio greater than or equal to the speed ratio threshold and / or a load ratio less than or equal to the threshold of the load ratio includes at least one modified interface. Includes structured packing with packs having. [Selection] Figure 1 |