F25J3/04769 - 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; Start-up or control of the process; Details of the apparatus used Operation, control and regulation of the process; Instrumentation within the process

• F25J3/04775 » {Air purification and pre-cooling} 29
• F25J3/04781 » {Pressure changing devices, e.g. for compression, expansion, liquid pumping} 56
• F25J3/04787 » {Heat exchange, e.g. main heat exchange line; Subcooler, external reboiler-condenser } 37
• F25J3/04793 » {Rectification, e.g. columns; Reboiler-condenser } 18
• F25J3/04812 » {Different modes, i.e. "runs" of operation } 55
• F25J3/04848 » {Control strategy, e.g. advanced process control or dynamic modeling} 37
• F25J3/04854 » {Safety aspects of operation} 7

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