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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1/00

Processes or apparatus for liquefying or solidifying gases or gaseous mixtures

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F25J1/003

characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production

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F25J1/0032

using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"

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F25J1/0042

by liquid expansion with extraction of work

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Patent classifications