FIELD: cryogenic engineering. SUBSTANCE: information on volumetric fraction of oxygen in upper target product is furnished from sensor 8 to regulating unit 10; information on flow rate of phlegm is furnished from sensor 9 to the same regulating unit; sign of derivative volumetric fraction of oxygen in upper target product is determined in unit 10 by phlegm flow rate and direction of action of regulating unit 10 is selected depending on this sign and flow rate of phlegm is regulated. EFFECT: enhanced efficiency. 3 cl, 5 dwg
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Authors
Dates
1995-06-27—Published
1993-01-05—Filed