| abstract |
An air separation plant comprising a first column (1) distilling medium pressure, a second column (2) distilling low pressure, a third column (3) distilling low pressure, a first condenser-vaporizer (9,9A), a second condenser-vaporizer (5) arranged in the tank of the second column, a conduct (33) to bring air to the first column, a pipe (35) for supplying a nitrogen enriched liquid to the head from the first column to the head of the third column, at least one pipe (23) for supplying liquid from the tank of the third column to the first condenser-vaporizer, a conduit (25) for supplying a vessel liquid from the first column to the third column, a pipe (21) for bringing from the first condenser-vaporizer to the second column, a conduct (15,19) to bring gas from the head of the second column to the tank of the third column, the first, second and third columns being arranged side by side. |