FIELD: instrument engineering.
SUBSTANCE: invention relates to low-temperature air separation means. Method of producing at least one liquid oxygenate (LOX) and one gaseous oxygenate (GOX) by low-temperature air (AIR) separation in distillation column system (S) of the air separation plant. To obtain liquid oxygenate (LOX) a liquid fraction with a first, higher, oxygen content is taken from separation column (S2) of distillation column system (S) and is discharged from the air separation plant as a liquid. To obtain gaseous oxygenate (GOX) a liquid fraction with a second, lower, oxygen content is taken from the same separation column (S2), is evaporated in at least one mixing column (S3) at a pressure in the mixing column due to the air supplied to the mixing column and is discharged from the air separation plant as a gas. Object of the invention is also a corresponding air separation plant.
EFFECT: technical result is an increase in the efficiency of oxygen extraction.
12 cl, 2 dwg
