Purification of crude argon

Details Purification of crude argon Purification of crude argon

1989-02-28

1990-06-19

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 66, F25J 304

Patent

active

049350447

ABSTRACT:
For the purification of crude argon, which accumulates partly in liquid form and partly in gaseous form in the head of a crude argon column, most of the crude argon is removed in liquid form (4) and its pressure is increased by use of the hydrostatic potential. Then, the crude argon accumulated in liquid form is evaporated (6), freed of oxygen (9, 10) and fed to a rectification (13). Crude argon accumulated in gaseous form (5) is also reprocessed by being compressed and fed to the evaporated crude argon. The compression is preferably conducted in conjunction with the compression of excess hydrogen recycle gas.

REFERENCES:
patent: 2874030 (1959-02-01), Dennis
patent: 2909410 (1959-10-01), Fedorko
patent: 3173778 (1965-03-01), Gaumer, Jr.
patent: 3181306 (1965-05-01), Geist et al.

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