F25J3/04472 - 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 using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages

• F25J3/04478 » {for controlling purposes, e.g. start-up or back-up procedures } 14
• F25J3/04496 » {for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist} 24

Recent Application in this class: