Non-condensable gas filtering and recycling process for liquid argon system

The invention discloses a non-condensable gas filtering and recycling process for a liquid argon system. The liquid argon recycling process is composed of a liquid argon storage tank, an argon recycling device and a liquid nitrogen cooler, the liquid argon recycling process comprises the following steps that liquid argon discharged from exhaust ports of a high-pressure liquid argon storage tank and a low-pressure liquid argon storage tank is collected; the liquid argon is intensively transmitted into the argon recycling device; the argon recycling device is connected with the liquid nitrogen cooler, the temperature inside the argon recycling device is reduced, and argon in the argon recycling device is cooled and liquefied; and after argon in the argon recycling device is liquefied into the argon, the liquid argon flows back to the high-pressure liquid argon storage tank through a conveying pipe. According to the non-condensable gas filtering and recycling process for the liquid argon system, the liquid argon