Low temperature air fractionation system

Details Low temperature air fractionation system Low temperature air fractionation system

2005-09-27

2005-09-27

Doerrler, William C. (Department: 3744)

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

C062S905000, C062S911000

Reexamination Certificate

active

06948337

ABSTRACT:
The invention relates to a low temperature air fractionation system comprising several modules consisting of at least one heat exchange unit, a pressure column and a low pressure column, in addition to the accessories belonging to the respective modules and at least two cold-boxes, wherein the module and/or the accessories are arranged. The invention is characterized in that at least one of the cold-boxes is embodied in the form of a main box and at least one of the cold-boxes is embodied in the form of a secondary box. The secondary box contains at least one module and the accessories of the module disposed in the secondary box are mainly located in the main box.

REFERENCES:
patent: 5412954 (1995-05-01), Grenier
patent: 5461871 (1995-10-01), Bracque et al.
patent: 5522224 (1996-06-01), Canney
patent: 5893276 (1999-04-01), Higginbotham
patent: 6148637 (2000-11-01), Guillard et al.
patent: 6167723 (2001-01-01), Guillard
patent: 6205815 (2001-03-01), Bruder et al.
patent: 6212907 (2001-04-01), Billingham et al.

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