| 摘要 |
A distillation column for separating a liquid mixture into a plurality of pure fractions, the distillation column being subdivided in its central area into two parts, a feed part (2) and a take-off part (3) by a partition acting in the longitudinal direction, the partition comprising two walls (4) having a gas space (5) lying in between, the distance between the two walls being 1 to 50 mm, preferably 3 to 10 mm. <IMAGE> |
