Air liquefaction and separation process and equipment

Details Air liquefaction and separation process and equipment Air liquefaction and separation process and equipment

1981-02-26

1983-02-08

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 42, F25J 304

Patent

active

043727654

ABSTRACT:
A method and equipment are disclosed herein which liquefy and separate air through the use of a multiple rectifying tower system comprising a high pressure tower and a low pressure tower. The rectifying regions of the high pressure tower and the low pressure tower are divided into an equal number (at least two) of segments and gases at the tops of the respective segments of the high pressure tower are permitted to exchange heat with circulating liquids or liquid oxygen at the bottoms of the respective segments of the low pressure tower and to evaporate the circulating liquids or the liquid oxygen. The gases are then condensed to provide a circulating liquid for the low pressure tower.

REFERENCES:
patent: 1363659 (1920-12-01), Lachmann
patent: 1784120 (1930-12-01), Van Nuys et al.
patent: 1945367 (1934-01-01), Gobert
patent: 2502250 (1950-03-01), Dennis
patent: 2513306 (1950-07-01), Garbo
patent: 3754406 (1973-08-01), Allam
Chemie Ingenieur Technik by Helmut Springmann, Chemie-Ing.-Techn, vol. 46, 1st Edition, Nov. 1974, No. 21, pp. 881-924.

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