Air-distillation plant and corresponding cold box
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsAlain Guillard, Patrick Le Bot, Jean-Marc Tsevery, Gilles Bracque, Benoit Rousseau
Life of this patent
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Abstract
The plant (1) comprises at least three assemblies (10, 11, 12) arranged one beside the other, namely a first assembly (10) comprising a medium-pressure column (2), a second assembly (11) comprising a low-pressure column (3), and a third assembly (12) comprising a heat-exchange line (5). The plant further comprises a liquid pump (6) for making a liquid flow between one of the columns (3) and the vaporizer-condenser (4). Application to the distilling of air using columns with structured interior packing.
Claims24
In an air distillation plant comprising a first assembly comprising a medium-pressure column, a second assembly comprising low-pressure column, a third assembly comprising a heat-exchange line for cooling air to be distilled, and a vaporizer-condenser, the top of the medium-pressure column and the bottom of the low-pressure column being in fluid communication with the vaporizer-condenser, the medium-pressure column and the low-pressure column being in fluid communication with the heat-exchange line;
- the improvement wherein said three assemblies are disposed one beside the other and said three assemblies, when viewed from above, form a triangle.
In an air distillation plant comprising a first assembly comprising a medium-pressure column, a second assembly comprising low-pressure column, a third assembly comprising a heat-exchange line for cooling air to be distilled, and a vaporizer-condenser, the top of the medium-pressure column and the bottom of the low-pressure column being in fluid communication with the vaporizer-condenser, the medium-pressure column and the low-pressure column being in fluid communication with the heat-exchange line;
- the improvement wherein each of said assemblies is surrounded by an individual thermal insulation wall so that each forms an individual cold box.
In an air distillation plant comprising a first assembly comprising a medium-pressure column, a second assembly comprising low-pressure column, a third assembly comprising a heat-exchange line for cooling air to be distilled, and a vaporizer-condenser, the top of the medium-pressure column and the bottom of the low-pressure column being in fluid communication with the vaporizer-condenser, the medium-pressure column and the low-pressure column being in fluid communication with the heat-exchange line;
- the improvement wherein said third assembly and one of said first and second assemblies is surrounded by a common thermal insulation wall and the other of said first and second assemblies is surrounded by an individual thermal insulation wall so as to form two cold boxes.
Dependencies are inferred from the claim text.