F25J3/04248 - CPC Classification

Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion

• F25J3/04254 » {using the cold stored in external cryogenic fluids } 40
• F25J3/04278 » {using external refrigeration units, e.g. closed mechanical or regenerative refrigeration units} 22
• F25J3/04284 » {using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams } 27
• F25J3/04333 » {using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams} 3
• F25J3/04375 » {Details relating to the work expansion, e.g. process parameter etc.} 4

Recent Application in this class: