| 摘要 |
PCT No. PCT/FR92/01058 Sec. 371 Date Jun. 11, 1993 Sec. 102(e) Date Jun. 11, 1993 PCT Filed Nov. 13, 1992 PCT Pub. No. WO93/11395 PCT Pub. Date Jun. 10, 1993.A flow of air which has been compressed cooled dried is treated in a unit for separation by cryogenic distillation to give a flow of nitrogen; the oxygen enriched residual gases are, in part, sent at the inlet of a unit for separation by adsorption in which the outlet substantially produces oxygen. If the flow of oxygen is insufficient, additional air is injected. If the flow of oxygen is too important, an excess flow of residual gases is withdrawn. This apparatus enables to provide, at a lesser cost, independent flows of nitrogen and oxygen which are adjustable at will.
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