Refrigeration – Processes – Circulating external gas
Patent
1993-06-07
1995-03-28
Kilner, Christopher
Refrigeration
Processes
Circulating external gas
62 38, 62 43, F25J 302
Patent
active
054006007
ABSTRACT:
Entering air, all of which is compressed to a first high pressure P1, is partly further compressed to a pressure P2. At intermediate temperatures, a portion of each air current is expanded in a turbine (7, 8). One of the turbines can have an output at a pressure P3 comprised between P1 and the medium pressure. The major proportion of the separated oxygen is withdrawn as a liquid from the low pressure column (13), pumped to the production pressure and vaporized in the heat exchange line (2) by condensation or pseudo-condensation of air at one of the pressures P1, P2 and P3, depending on whether the condensation occurs at subcritical or supercritical pressure.
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Kilner Christopher
L'Air Liquide Societe Anonyme pour l'Etude et, l'Exploitation de
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