IPIQ

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F25

REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES

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F25J

LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE

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2220/00

Processes or apparatus involving steps for the removal of impurities

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F25J2220/80

Separating impurities from carbon dioxide, e.g. H2O or water-soluble contaminants

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F25J2220/82

Separating low boiling, i.e. more volatile components, e.g. He, H2, CO, Air gases, CH4

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Patent classifications