Method and apparatus for cryogenic separation of air

The invention provides a method for cryogenic separation of air using an air separation plant (100, 200, 300) configured as a high pressure air separation plant in which a plurality of partial air streams are formed from initially compressed air (A), the partial air streams are at least partially further compressed before being introduced into the tower system (10), cooled in the main heat exchanger (3) and expanded. The partial air flow comprises a first partial air flow (C) and a second partial air flow (E), and the air of the first partial air flow (C) and the air of the second partial air flow (E) are compressed in parallel in the first warm supercharger (5) and the second warm supercharger (7). And thereafter is expanded in a first expander (4) and a second expander (6), which are mechanically connected to the first supercharger (5) and to the second supercharger (7), respectively. The internally compressed gaseous oxygen is generated and withdrawn at an absolute pressure between 3 bar and 9 bar, and no