Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1996-08-12
1998-12-08
Kilner, Christopher
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62915, 62653, F25J 304
Patent
active
058455175
ABSTRACT:
An air stream is compressed and divided into a first partial stream (4) used as the feed air stream for a low-temperature air rectification system (16), and a second partial stream (5) used as an oxidation agent in a chemical reaction (6). The waste gas from the chemical reaction is work expanded (9). The first partial stream (4) is introduced into one of rectifying columns (17, 18). A liquid product stream is withdrawn from one (18) of the rectification columns, compressed (28) and vaporized against a further compressed (31, 33) process stream (15) from the low-temperature rectification. At least a portion of the mechanical energy resulting from the work expansion (9) of the waste gas of chemical reaction (6) is used for further compression (31, 33) of the process stream.
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patent: 3950957 (1976-04-01), Zakon
patent: 4224045 (1980-09-01), Olszewski et al.
patent: 4555256 (1985-11-01), Skolaude et al.
patent: 5036672 (1991-08-01), Rottmann et al.
patent: 5251451 (1993-10-01), Xu et al.
patent: 5437160 (1995-08-01), Darredeau et al.
Kilner Christopher
Linde Aktiengesellschaft
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