Argon recovery method and argon recovery device for removing carbon monoxide through rectification technology and enriching high-purity nitrogen

The invention relates to an argon recovery method for removing carbon monoxide through a rectification technology and enriching high-purity nitrogen. An argon recovery flow path and an air nitrogen flow path are involved in the method. The invention also relates to an argon recovery device for removing carbon monoxide through the rectification technology and enriching high-purity nitrogen. The argon recovery device comprises an argon compressor, a carbon monoxide reaction furnace, an argon pre-cooling purification system, an air compressor, an air pre-cooling purification system, a heat exchanger, an argon refining tower, an argon tower first reboiler, an argon tower second reboiler, an argon tower condensation evaporator, a nitrogen tower and a nitrogen tower condensation evaporator. Thelimitation of a regenerated gas can be reduced through self-produced nitrogen in a cold box by using the integrated air nitrogen flow path and the rich cooling capacity of liquid argon, so the extraction rate of recovered arg