FIELD: cryogenic technology, particularly, low-temperature air rectification; applicable in chemical, industry. SUBSTANCE: production gaseous oxygen is withdrawn from flow of gaseous oxygen of main condenser which is the first in line of flow of liquid oxygen. Flow of refined oxygen from evaporator-condenser is directed to upper column and liquid production oxygen is withdrawn from main flow of liquid oxygen before its supply to group of main condensers. Installed on pipeline of refined gaseous oxygen and on pipelines of gaseous production oxygen in front of oxygen heater are separators. EFFECT: higher economic efficiency of air-fractionating plants due to increased recovery of xenon. 4 cl, 1 dwg, 1 tbl
