| 摘要 |
The device serves for the cryogenic separation of air. It has the following features: a main heat exchanger and a supercooling countercurrent heat exchanger (2); a distillation column system for nitrogen-oxygen separation (5), which comprises a high-pressure column and a low-pressure column; a mixing column (1); means for introducing charge air via the main heat exchanger into the high-pressure column and into the mixing column; a liquid-oxygen line for introducing liquid oxygen from the low-pressure column into the upper region of the mixing column; an oxygen product line for extracting oxygen gas from the upper region of the mixing column through the main heat exchanger. The mixing column (1) and at least one of the two heat exchangers mentioned (2, 6) are arranged in a common cold box (3). |
