Chapter 3



In this chapter the use of air as a raw material for the production of the species that constitute the mixture, oxygen, nitrogen, and noble gases is shown, as well as its use as a comburant. Air liquefaction and separation technologies are described and analyzed using unit operation principles. In addition to the classic approach using diagrams and shortcut methods, process simulators (eg, CHEMCAD) are used to perform calculations and compared. Various liquefaction cycles—such as Linde’s, Claude’s, and Phillips’s, and air separation technologies including the operation of Linde’s double column—are evaluated. Moreover, air typically carries a certain level of humidity that affects its use as a refrigerant in cooling towers, ...

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