| 摘要 |
The invention relates to a process for recovering argon by low-temperature separation of air. Rectifying system ( 2, 4 ) exhibits at least one air separation column ( 4 ), which has a partition ( 5 ) that runs in lengthwise direction of the column, by which air separation column ( 4 ) is separated at the level of partition ( 5 ) into a first subsection and a second subsection ( 6, 7 ). A fluid ( 3 ) that contains oxygen and argon is introduced into first subsection ( 6 ). A stream ( 13 ) that contains oxygen and argon with an argon concentration of between 15% and 50% is removed in second subsection ( 7 ). |
