Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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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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3/00
Processes or apparatus for separating the constituents of gaseous; or liquefied gaseous; mixtures involving the use of liquefaction or solidification
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F25J3/02
by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
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F25J3/04642
Recovering noble gases from air
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F25J3/04654
Producing crude argon in a crude argon column
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F25J3/04666
as a parallel working rectification column of the low pressure column in a dual pressure main column system
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F25J3/04672
having a top condenser
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F25J3/04678
cooled by oxygen enriched liquid from high pressure column bottoms
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