Process and apparatus for air fractionation by rectification

Details Process and apparatus for air fractionation by rectification Process and apparatus for air fractionation by rectification

1990-02-22

1991-08-06

Caposse, Ronald C.

Refrigeration

Processes

Circulating external gas

62 39, F25J 302

Patent

active

050366726

ABSTRACT:
A process and an apparatus are disclosed for air fractionation by means of rectification. Nitrogen (16) withdrawn from the process is heated to an intermediate temperature, withdrawn, in part (30), out of the primary heat exchanger (17), and engine-expanded (31). The resultant expanded gas (32) transfers its cold in the primary heat exchanger (17) to air to be fractionated (1) and is then recompressed (33, 36).

REFERENCES:
patent: 3375673 (1968-04-01), Cimler et al.
patent: 3886758 (1975-06-01), Perrotin et al.
patent: 4072023 (1978-02-01), Springmann
patent: 4133662 (1979-01-01), Wagner
patent: 4382366 (1983-05-01), Gaumer
patent: 4718927 (1988-01-01), Baurer

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