FIELD: technological processes.
SUBSTANCE: invention relates to production of helium from natural gas. Extraction plant of 3He from commercial liquid helium contains external helium liquefier, rectification unit, including rectification column with condensers, pipelines connecting helium liquefier and rectification unit, and one or more refrigerators discharging heat from condensers with excessive reverse flow created by addition of liquid helium from external liquefier.
EFFECT: invention provides reduced cost of installation and operating costs, as well as simplified control of plant efficiency.
3 cl, 1 dwg
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