Production process of xenon

Details Production process of xenon Production process of xenon

1988-08-23

1989-10-17

Doll, John

Chemistry of inorganic compounds

Inert or noble gas or compound thereof

55 28, 55 66, 55 68, 4232453, B01D 5304, B01D 5336, C01B 2300

Patent

active

048745928

ABSTRACT:
This invention provides a manufacturing process which produces highly purified Xenon economically and safely with high recovery efficiency. In this invention liquid oxygen containing Xenon, which is vented from the main condenser in the upper rectification column of the air separating unit, is sequentially fed into multiple adsorptive columns filled with an adsorbent to selectively adsorb the Xenon. By a sequence of adsorbing-desorbing steps, Xenon is gradually condensed and, at the final state, highly purified Xenon is recovered. Hydrocarbons (CmHn) are removed from the product gas by a catalytic process. Xenon at a purity as high as 99.995% and at a yield as high as 95% is obtained by use of the present process.

REFERENCES:
patent: 1670014 (1928-05-01), Blaringhem
patent: 2793507 (1957-05-01), Hnilicka
patent: 2962868 (1960-12-01), Dennis
patent: 3971640 (1976-07-01), Golovko
patent: 4732584 (1988-03-01), Coe et al.
Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed. John Wiley & Sons, 1980, pp. 264-268 (vol. 12).

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