Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1995-09-08
1997-01-14
Capossela, Ronald C.
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62632, 62920, 62932, F25J 300
Patent
active
055928315
ABSTRACT:
In the recovery of a pure CO fraction from a charge containing hydrogen, carbon monoxide and methane from which water and carbon dioxide have optionally been removed, the charge is cooled and partially condensed; and the carbon monoxide is scrubbed out with supercooled liquid methane. The resultant hydrogen is stripped out, and the recovered CO/CH.sub.4 -rich fraction is separated by rectification to obtain a pure CO fraction and a CH.sub.4 -rich fraction. The supercooled liquid methane used as the scrubbing agent contains at least 2 to 15 mol % carbon monoxide, preferably 7 to 10 mol % carbon monoxide. Also, the hydrogen stripper and methane scrubbing column can be combined in a single column.
REFERENCES:
patent: 4888035 (1989-12-01), Bauer
patent: 5133793 (1992-07-01), Billy
patent: 5351491 (1994-10-01), Fabian
Dr. Ralph Berninger, "Fortschritte bei der H.sub.2 /CO-Tieftemperaturzerlegung", Berichte Aus Technik Und Wissenschaft, vol. 62:18-12, 1988.
Dipl.-Ing. Ranier Fabian, "Derzeitiger Stand der H.sub.2 -CO-Zerlegung mittels Tieftemperaturtechnik", Berichte Aus Technik Und Wissenschalft, vol. 55:38-42, 1984.
Bauer Heinz
Fabian Rainer
Capossela Ronald C.
Linde Aktiengesellschaft
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