Refrigeration – Processes – Circulating external gas
Patent
1994-08-25
1996-02-13
Kilner, Christopher
Refrigeration
Processes
Circulating external gas
62 41, 62 30, F25J 304
Patent
active
054903912
ABSTRACT:
An air separation apparatus and method for producing a gaseous oxygen product at a delivery pressure. A, filtered, compressed and purified air stream is formed and preferably divided into first and second air streams. The air contained within the first air stream is separated by a low temperature rectification process operating in accordance with a Claude cycle to produce liquid oxygen in a lower pressure column with a double column air separation unit. A Claude expander expands at least a major portion of the air contained within the first air stream into the high pressure column. The second air stream is compressed and partially cooled and is then expanded with the performance of work which is in turn applied to the work of compression of the second air stream. Liquid oxygen is pumped from the lower pressure column to substantially the delivery pressure and is vaporized within a mixing column against the second air stream which is also introduced into the mixing column. A liquid stream composed of the liquid produced in the mixing column is then introduced into an intermediate location of the lower pressure column to add the refrigeration of the second air stream to the process.
REFERENCES:
patent: 3813889 (1974-06-01), Allam et al.
patent: 4022030 (1977-05-01), Brugerolle
patent: 4717409 (1988-01-01), Atkinson
patent: 4747860 (1988-05-01), Atkinson
patent: 4818262 (1989-04-01), Brugerolle
patent: 4883517 (1989-11-01), Rathbone
patent: 4916908 (1990-04-01), Lavin et al.
patent: 5079923 (1992-01-01), Grenier
patent: 5144808 (1992-09-01), Ha
patent: 5244489 (1993-09-01), Grenier
patent: 5291737 (1994-03-01), Camberlein et al.
Hogg Neil
Straub Joseph
Cassett Larry R.
Kilner Christopher
Rosenblum David M.
The BOC Group Inc.
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