| 摘要 |
<p>1. Distillation column with plates in which plates (4, 5, 6) in the form of semicircles are disposed alternately on both sides of a continuous vertical wall (2) dividing the column into two sectors which are leaktight to the passage of gases and vapours and staggered axially, each plate having at one of its edges a liquid reception area (4a, 5a, 6a) and at the other end a sectional pane forming an outlet (4d,5d, 6d), the said reception areas and the said outlets being situated alternately in the sequence of superimposed plates sometimes on one and sometimes on the other side of the plate, characterized in that each sector of the column is subdivided by at least one wall (11) into at least two sub-sectors of substantially equal surface, the said wall having above each plate a cut-out section (4e, 5e, 6e) leaving between the edge of the cut-out section and the plate a passage for the liquid crossing the plate from one sub-sector to another, so that each sub-sector is traversed by a gaseous current which does not mix with other gaseous currents, whilst the gaseous currents each one of which circulates along a single sub-sector encounter flowing in the opposite direction, the same total liquid current running in a helicoidal movement from one plate to the other.</p> |
