Process for liquefying and rectifying air
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United States of America Patent
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-
Mar 11, 1980
Grant Date -
N/A
app pub date -
Dec 23, 1977
filing date -
Dec 28, 1976
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Separation of air to produce oxygen, nitrogen and other materials is done by liquefaction and rectification under low pressure to achieve a large saving of the power requirement. The cold of LNG (liquefied natural gas) is utilized for cooling feed air and compressed gas (principally nitrogen), and this gas is compressed at an extremely low temperature so as to achieve further saving of power.
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