Controlled process for xenon concentration

Details Controlled process for xenon concentration Controlled process for xenon concentration

1991-10-04

1993-02-16

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 66, 62 37, 423262, F25J 304

Patent

active

051860074

ABSTRACT:
The present invention relates to feeding liquid oxygen from the main condenser of the upper rectifying column of an air liquefying/separating unit into a xenon condensing column. The liquid oxygen is evaporated in varying amounts in correspondence to fluctuating amounts of liquid oxygen being fed into the xenon condensing column. The level and pressure of the liquid at the xenon condensing column is controlled and quantities of liquid oxygen is vented from the xenon condensing column at a constant level. The vented liquid oxygen is exchanged to high pressure oxygen gas in order to evaporate it, and this evaporated gaseous oxygen is supplied to a xenon absorptive column, and recovered as liquid oxygen through heat-exchangers.

REFERENCES:
patent: 3222879 (1965-12-01), Stoklosinski
patent: 3751934 (1973-08-01), Frischbier
patent: 4568528 (1986-02-01), Cheung
patent: 4574006 (1986-03-01), Cheung
patent: 4647299 (1987-03-01), Cheung
patent: 5039500 (1991-08-01), Shino et al.
Fuji Techno-System Technical Report, 1986, pp. 430-431.

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