Process for producing xenon

Details Process for producing xenon Process for producing xenon

1988-11-18

1991-08-13

Lewis, Michael L.

Chemistry of inorganic compounds

Inert or noble gas or compound thereof

55 66, 4232453, 62 18, 62 22, B01D 5304, B01D 5336, C01B 2300

Patent

active

050395009

ABSTRACT:
The present invention relates to a process for producing high purity xenon safely at a high yield from liquid oxygen in a main condenser of an air separating unit.
The present invention involves a process for concentrating and recovering xenon by gasifying and introducing liquid oxygen led out from the main condenser in the air separating unit into an adsorption column field with an adsorbent which adsorbs xenon for adsorption and desorption, and a process for rectifying and recovering xenon by introducing concentrated xenon gas into a solid-gas separating column, which is cooled to a temperature at which xenon is solidified but components other than xenon such as oxygen and krypton in the concentrated xenon gas are not solidified to, catch xenon by condensation, then heating the solid-gas separating column after evacuating gas components remained therein.

REFERENCES:
patent: 1670614 (1924-05-01), Blaringhem
patent: 2793507 (1950-04-01), Hnilicka
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patent: 3222879 (1965-12-01), Stoklosinski
patent: 4283367 (1981-08-01), Koeppe et al.
patent: 4421536 (1983-12-01), Mori et al.
patent: 4874592 (1989-10-01), Shino et al.
Kohl and Riesenberg, "Gas Purification"; 3rd Gulf Publishing, Houston, Tex., 1979, pp. 574-575.

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