Device for the cryogenic separation of air

摘要

The device serves for the cryogenic separation of air. It comprises a main heat exchanger (6) and a distillation column system for nitrogen-oxygen separation (5) with a double column (5), which contains a high-pressure column and a low-pressure column. The device also includes a mixing column (1) and means for introducing charge air via the main heat exchanger (6) into the high-pressure column and into the mixing column. A liquid oxygen line serves for introducing liquid oxygen from the low-pressure column into the upper region of the mixing column (1), an oxygen product line serves for extracting oxygen gas from the upper region of the mixing column (1) through the main heat exchanger (6). The mixing column (1) and the double column (5) are arranged in a common cold box (3). The mixing column (1) is attached to the double column (5) by way of connecting elements (10, 11).

主权项

1. A device for low-temperature separation of air comprising:
a main heat exchanger (6), a distilling-column system for nitrogen-oxygen separation (5) comprising a double column (5), which contains a high-pressure column and a low-pressure column, and a mixed column (1), said distilling-column system having means for introducing charging air, via the main heat exchanger (6), into the high-pressure column and into the mixed column, a liquid oxygen line for introducing liquid oxygen from the low-pressure column into an upper area of the mixed column (1), and an oxygen product line for withdrawing oxygen gas from the upper area of the mixed column (1) via the main heat exchanger (6), wherein the mixed column (1) and the double column (5) are arranged in a shared coldbox (3), wherein the mixed column (1) is not supported from below, and wherein the mixed column (1) is fastened via connecting elements (10, 11) laterally to the double column (5).