Recovery of Nitrogen, Oxygen and Argon

Attempts to generate real argon compounds such as ArF2 respect ArF have failed [2.9]. Together with water, argon forms a hydrate with a dissociation pressure of 106 bar at 0 °C. At 0 °C and above 106 bar, this hydrate is stable. Moreover, with hydroquinone an inclusion compound is known (clathrates) however containing no real chemical bonds [2.8]. 

Application Range oTMembrane Separation, Pressure Swing Adsorption and Cryc enic Rectification 

The three separation techniques have different process properties, investment and operating costs. A dedicated segment can be defined for each method, in which it allows for the most economic gas production. Table 2.2 characterizes these segments by their production capacity and gas purity. Of course, the numbers given therein are no sharp limits but indicate reasonable application ranges. 

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Recovery of Nitrogen, Oxygen and Argon 33 internal compreaelon PGOX... 

Figure 1.5 Applications of membrane systems. (Source Prism Gas Separation Systems, Monsanto Chemical Co., St. Louis, MO Air Products and Chemicals, Inc., Allentown, PA.) Gaseous components and systems include argon, helium, hydrogen, carbon monoxide/syngas, nitrogen, oxygen, CO,-removal, H,S-removal, dehydration. Capacity for nitrogen recovery is up to 35,000 SCF/hr for 97% purity, and about one-tenth of this for 99+% purity.

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