Production unit for large quantities of oxygen and/or nitrogen

Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture

Reexamination Certificate

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C062S902000, C062S911000

Reexamination Certificate

active

06945076

ABSTRACT:
An apparatus and method for air distillation. Two cold boxes and an air treatment unit are used to distill air. The cold boxes contain a heat exchanger for cooling the air to be distilled and an air distillation unit for producing either oxygen, nitrogen or argon. The air treatment unit has many individual treatment elements which are connected in parallel. The outlet of the air treatment unit is connected to both cold boxes and to all the individual treatment units.

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patent: 1160528 (2001-12-01), None
patent: WO03016804 (2003-02-01), None
French Search Report to FR 02 11232.
“Process and Facility With Particularly High Availability,” Research Disclosure, Kenneth Mason Publications, Hampshire, GB, No. 397, May 1, 1997, pp. 276-279, XP000726402; ISSN: 0374-4353.

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