A separating wall (TW), forming a first partial region (A), a second partial region (B) and a lower common column region (C), is arranged in the longitudinal direction of the extractive distillation column (EDK).

Move a column field to the row area or a row field to the column area.

Multi-column layout introduces the column box, which is defined as a new type of container between the content box and the content.

For example, the address electrode (AE) is provided in each cell column area (CA) formed between barrier ribs (BR) adjacent to each other.