Air separation plant, method for obtaining a product containing argon, and method for creating an air separation plant

An air separation plant for producing an argon-containing product by low-temperature separation of compressed cooled feed air, said air separation plant comprising:

• a high-pressure column, a low-pressure column constructed in a multi-piece manner having a foot section and a top section arranged spatially separate therefrom, and a crude argon column constructed in a multi-piece manner having a foot section and a top section arranged spatially separate therefrom, wherein, in the high-pressure column, at least one oxygen-enriched stream is obtainable from at least a part of the feed air, in the low-pressure column at least one argon-enriched stream is obtainable from at least a part of the oxygen-enriched stream, wherein said argon-enriched stream is obtained from a lower part of the top section of the low-pressure column, and in the crude argon column, at least one argon-rich stream is obtainable from at least a part of the argon-enriched stream,
• a first pipeline for removing at least one liquid stream from a lower region of the top section of the low-pressure column, a second pipeline for removing at least one liquid stream from a lower region of the foot section of the crude argon column, wherein said first pipeline is in direct fluid communication with a shared pump and wherein the second pipeline is in fluid communication with said shared pump, and a third pipeline for transferring the at least one liquid stream from a lower region of the top section of the low-pressure column and the at least one liquid stream from a lower region of the foot section of the crude argon column from the shared pump into an upper region of the foot section of the low-pressure column.