Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1995-04-19
1996-06-18
Kilner, Christopher
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62913, F25J 300
Patent
active
055266479
ABSTRACT:
In a process for the production of gaseous oxygen under pressure at a variable flow rate, of the type in which air is distilled in an air distillation installation comprising a distillation apparatus (7) and a heat exchange line (6) to cool the air by heat exchange with the products from the distillation apparatus; liquid oxygen is withdrawn from this apparatus, brought to a vaporization pressure, vaporized and reheated under this pressure in the heat exchange line, this vaporization and this reheating being accompanied by a liquefaction of air in the air liquefaction passages (21; 21,21A) of the heat exchange line. During a reduction of the demand for gaseous oxygen under pressure, relative to the nominal flow rate, excess oxygen produced by the distillation apparatus is withdrawn from this apparatus, in liquid phase, sent to a receptacle (11) for the storage of liquid oxygen, and there is introduced into the distillation apparatus (7) a previously stored (in 13) corresponding additional quantity of liquid air; and during an increase in the demand for gaseous oxygen under pressure relative to the nominal flow rate, the required excess oxygen is withdrawn, in liquid phase, from the liquid oxygen storage receptacle (11), brought (in 12) to the vaporization pressure, and vaporized under this pressure (in 18) in the heat exchange line (6), and there is stored a corresponding quantity of air liquefied by said vaporization, in the liquid air storage receptacle. The liquid oxygen is stored under a pressure in the neighborhood of atmospheric pressure, while the liquid air is stored under a storage pressure substantially greater than the highest operating pressure of the distillation apparatus.
REFERENCES:
patent: 3059439 (1962-10-01), First et al.
patent: 3174293 (1965-03-01), Jakob et al.
patent: 4133662 (1979-01-01), Wagner
patent: 4529425 (1985-07-01), McNeil
patent: 4732595 (1988-03-01), Yoshino
patent: 4962646 (1990-10-01), Rathbone
patent: 5082482 (1992-01-01), Darredeau
patent: 5084081 (1992-01-01), Rohde
patent: 5265429 (1993-11-01), Dray
patent: 5329776 (1994-07-01), Grenier
patent: 5408831 (1995-04-01), Guillard et al.
Kilner Christopher
L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation De
LandOfFree
Process and installation for the production of gaseous oxygen un does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and installation for the production of gaseous oxygen un, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and installation for the production of gaseous oxygen un will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-215744