Process for liquefying and rectifying air

Details Process for liquefying and rectifying air Process for liquefying and rectifying air

1977-12-23

1980-03-11

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 18, 62 30, 62 40, F25J 304

Patent

active

041926625

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.

REFERENCES:
patent: 2496380 (1950-02-01), Crawford
patent: 2627731 (1953-02-01), Benedict
patent: 3367122 (1968-02-01), Tutton
patent: 3707849 (1973-01-01), Becker

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