초록 ▼

In this installation (1) for the distillation of air in a double column, the low pressure column and the medium pressure column are disposed side by side and the base of the low pressure column (3) is above the base of the medium pressure column (2). The low pressure column is disposed above an elem

In this installation (1) for the distillation of air in a double column, the low pressure column and the medium pressure column are disposed side by side and the base of the low pressure column (3) is above the base of the medium pressure column (2). The low pressure column is disposed above an element for confining a cryogenic fluid which can be a mixing column (5), an argon column, a column operating at a pressure intermediate the medium pressure and the low pressure, a storage (32) or an exchanger.

대표청구항 ▼

[ What is claimed is:] [1.] Installation (1) for the distillation of air, of the type comprising a double distillation column which itself comprises a medium pressure column (2), a low pressure column (3), means for withdrawing liquid from the medium pressure column and expanding said withdrawn liqu

[ What is claimed is:] [1.] Installation (1) for the distillation of air, of the type comprising a double distillation column which itself comprises a medium pressure column (2), a low pressure column (3), means for withdrawing liquid from the medium pressure column and expanding said withdrawn liquid to produce an expanded fluid and for introducing said expanded fluid into the low pressure column, a vaporizer-condenser (4) to place in heat exchange relation a calorigenic gas with liquid from the bottom of the low pressure column, and an element (5) for confining cryogenic fluid that passes through the installation, the low pressure column being beside the medium pressure column, characterized in that the bottom of the low pressure column is higher than the bottom of the medium pressure column and in that the low pressure column (3) is disposed above this confinement element (5).