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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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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F25J3/04

for air

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F25J3/04406

using a dual pressure main column system

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F25J3/04412

in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column

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Patent classifications